/* * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved. */ /* * The code contained herein is licensed under the GNU General Public * License. You may obtain a copy of the GNU General Public License * Version 2 or later at the following locations: * * http://www.opensource.org/licenses/gpl-license.html * http://www.gnu.org/copyleft/gpl.html */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "crm_regs.h" static unsigned long pll_base[] = { (unsigned long)MXC_DPLL1_BASE, (unsigned long)MXC_DPLL2_BASE, (unsigned long)MXC_DPLL3_BASE, }; static struct clk pll1_main_clk; static struct clk pll1_sw_clk; static struct clk pll2_sw_clk; static struct clk pll3_sw_clk; static struct clk lp_apm_clk; static struct clk tve_clk; static struct clk emi_fast_clk; static struct clk emi_slow_clk; static struct clk emi_intr_clk; static struct clk ddr_clk; static struct clk ipu_clk[]; static struct clk axi_a_clk; static struct clk axi_b_clk; static struct clk ddr_hf_clk; static struct clk mipi_hsp_clk; static struct clk gpu3d_clk; static struct clk gpu2d_clk; static struct clk vpu_clk[]; static int cpu_curr_wp; static struct cpu_wp *cpu_wp_tbl; int cpu_wp_nr; int lp_high_freq; int lp_med_freq; #define SPIN_DELAY 1000000 /* in nanoseconds */ extern int mxc_jtag_enabled; extern int cpufreq_trig_needed; static int cpu_clk_set_wp(int wp); extern void propagate_rate(struct clk *tclk); struct cpu_wp *(*get_cpu_wp)(int *wp); void (*set_num_cpu_wp)(int num); static void __calc_pre_post_dividers(u32 div, u32 *pre, u32 *post) { u32 min_pre, temp_pre, old_err, err; if (div >= 512) { *pre = 8; *post = 64; } else if (div >= 8) { min_pre = (div - 1) / 64 + 1; old_err = 8; for (temp_pre = 8; temp_pre >= min_pre; temp_pre--) { err = div % temp_pre; if (err == 0) { *pre = temp_pre; break; } err = temp_pre - err; if (err < old_err) { old_err = err; *pre = temp_pre; } } *post = (div + *pre - 1) / *pre; } else if (div < 8) { *pre = div; *post = 1; } } static int _clk_enable(struct clk *clk) { u32 reg; reg = __raw_readl(clk->enable_reg); reg |= MXC_CCM_CCGR_CG_MASK << clk->enable_shift; __raw_writel(reg, clk->enable_reg); if (clk->flags & AHB_HIGH_SET_POINT) lp_high_freq++; else if (clk->flags & AHB_MED_SET_POINT) lp_med_freq++; return 0; } static void _clk_disable(struct clk *clk) { u32 reg; reg = __raw_readl(clk->enable_reg); reg &= ~(MXC_CCM_CCGR_CG_MASK << clk->enable_shift); __raw_writel(reg, clk->enable_reg); if (clk->flags & AHB_HIGH_SET_POINT) lp_high_freq--; else if (clk->flags & AHB_MED_SET_POINT) lp_med_freq--; } static void _clk_disable_inwait(struct clk *clk) { u32 reg; reg = __raw_readl(clk->enable_reg); reg &= ~(MXC_CCM_CCGR_CG_MASK << clk->enable_shift); reg |= 1 << clk->enable_shift; __raw_writel(reg, clk->enable_reg); } static int _clk_enable_inwait(struct clk *clk) { _clk_disable_inwait(clk); return 0; } /* * For the 4-to-1 muxed input clock */ static inline u32 _get_mux(struct clk *parent, struct clk *m0, struct clk *m1, struct clk *m2, struct clk *m3) { if (parent == m0) return 0; else if (parent == m1) return 1; else if (parent == m2) return 2; else if (parent == m3) return 3; else BUG(); return 0; } /* * For the ddr muxed input clock */ static inline u32 _get_mux_ddr(struct clk *parent, struct clk *m0, struct clk *m1, struct clk *m2, struct clk *m3, struct clk *m4) { if (parent == m0) return 0; else if (parent == m1) return 1; else if (parent == m2) return 2; else if (parent == m3) return 3; else if (parent == m4) return 4; else BUG(); return 0; } static inline unsigned long _get_pll_base(struct clk *pll) { if (pll == &pll1_main_clk) return pll_base[0]; else if (pll == &pll2_sw_clk) return pll_base[1]; else if (pll == &pll3_sw_clk) return pll_base[2]; else BUG(); return 0; } static struct clk ckih_clk = { .name = "ckih", .flags = RATE_PROPAGATES, }; static struct clk ckih2_clk = { .name = "ckih2", .flags = RATE_PROPAGATES, }; static struct clk osc_clk = { .name = "osc", .flags = RATE_PROPAGATES, }; static struct clk ckil_clk = { .name = "ckil", .flags = RATE_PROPAGATES, }; static void _fpm_recalc(struct clk *clk) { clk->rate = ckil_clk.rate * 512; if ((__raw_readl(MXC_CCM_CCR) & MXC_CCM_CCR_FPM_MULT_MASK) != 0) clk->rate *= 2; } static int _fpm_enable(struct clk *clk) { u32 reg = __raw_readl(MXC_CCM_CCR); reg |= MXC_CCM_CCR_FPM_EN; __raw_writel(reg, MXC_CCM_CCR); return 0; } static void _fpm_disable(struct clk *clk) { u32 reg = __raw_readl(MXC_CCM_CCR); reg &= ~MXC_CCM_CCR_FPM_EN; __raw_writel(reg, MXC_CCM_CCR); } static struct clk fpm_clk = { .name = "fpm_clk", .parent = &ckil_clk, .recalc = _fpm_recalc, .enable = _fpm_enable, .disable = _fpm_disable, .flags = RATE_PROPAGATES, }; static void _fpm_div2_recalc(struct clk *clk) { clk->rate = clk->parent->rate / 2; } static struct clk fpm_div2_clk = { .name = "fpm_div2_clk", .parent = &fpm_clk, .recalc = _fpm_div2_recalc, .flags = RATE_PROPAGATES, }; static void _clk_pll_recalc(struct clk *clk) { long mfi, mfn, mfd, pdf, ref_clk, mfn_abs; unsigned long dp_op, dp_mfd, dp_mfn, dp_ctl, pll_hfsm, dbl; unsigned long pllbase; s64 temp; pllbase = _get_pll_base(clk); dp_ctl = __raw_readl(pllbase + MXC_PLL_DP_CTL); pll_hfsm = dp_ctl & MXC_PLL_DP_CTL_HFSM; dbl = dp_ctl & MXC_PLL_DP_CTL_DPDCK0_2_EN; if (pll_hfsm == 0) { dp_op = __raw_readl(pllbase + MXC_PLL_DP_OP); dp_mfd = __raw_readl(pllbase + MXC_PLL_DP_MFD); dp_mfn = __raw_readl(pllbase + MXC_PLL_DP_MFN); } else { dp_op = __raw_readl(pllbase + MXC_PLL_DP_HFS_OP); dp_mfd = __raw_readl(pllbase + MXC_PLL_DP_HFS_MFD); dp_mfn = __raw_readl(pllbase + MXC_PLL_DP_HFS_MFN); } pdf = dp_op & MXC_PLL_DP_OP_PDF_MASK; mfi = (dp_op & MXC_PLL_DP_OP_MFI_MASK) >> MXC_PLL_DP_OP_MFI_OFFSET; mfi = (mfi <= 5) ? 5 : mfi; mfd = dp_mfd & MXC_PLL_DP_MFD_MASK; mfn = mfn_abs = dp_mfn & MXC_PLL_DP_MFN_MASK; /* Sign extend to 32-bits */ if (mfn >= 0x04000000) { mfn |= 0xFC000000; mfn_abs = -mfn; } ref_clk = 2 * clk->parent->rate; if (dbl != 0) ref_clk *= 2; ref_clk /= (pdf + 1); temp = (u64) ref_clk * mfn_abs; do_div(temp, mfd + 1); if (mfn < 0) temp = -temp; temp = (ref_clk * mfi) + temp; clk->rate = temp; } static int _clk_pll_set_rate(struct clk *clk, unsigned long rate) { u32 reg; u32 pllbase; long mfi, pdf, mfn, mfd = 999999; s64 temp64; unsigned long quad_parent_rate; unsigned long pll_hfsm, dp_ctl; pllbase = _get_pll_base(clk); quad_parent_rate = 4*clk->parent->rate; pdf = mfi = -1; while (++pdf < 16 && mfi < 5) mfi = rate * (pdf+1) / quad_parent_rate; if (mfi > 15) return -1; pdf--; temp64 = rate*(pdf+1) - quad_parent_rate*mfi; do_div(temp64, quad_parent_rate/1000000); mfn = (long)temp64; dp_ctl = __raw_readl(pllbase + MXC_PLL_DP_CTL); /* use dpdck0_2 */ __raw_writel(dp_ctl | 0x1000L, pllbase + MXC_PLL_DP_CTL); pll_hfsm = dp_ctl & MXC_PLL_DP_CTL_HFSM; if (pll_hfsm == 0) { reg = mfi<<4 | pdf; __raw_writel(reg, pllbase + MXC_PLL_DP_OP); __raw_writel(mfd, pllbase + MXC_PLL_DP_MFD); __raw_writel(mfn, pllbase + MXC_PLL_DP_MFN); } else { reg = mfi<<4 | pdf; __raw_writel(reg, pllbase + MXC_PLL_DP_HFS_OP); __raw_writel(mfd, pllbase + MXC_PLL_DP_HFS_MFD); __raw_writel(mfn, pllbase + MXC_PLL_DP_HFS_MFN); } clk->rate = rate; return 0; } static int _clk_pll_enable(struct clk *clk) { u32 reg; u32 pllbase; struct timespec nstimeofday; struct timespec curtime; pllbase = _get_pll_base(clk); reg = __raw_readl(pllbase + MXC_PLL_DP_CTL) | MXC_PLL_DP_CTL_UPEN; __raw_writel(reg, pllbase + MXC_PLL_DP_CTL); /* Wait for lock */ getnstimeofday(&nstimeofday); while (!(__raw_readl(pllbase + MXC_PLL_DP_CTL) & MXC_PLL_DP_CTL_LRF)) { getnstimeofday(&curtime); if (curtime.tv_nsec - nstimeofday.tv_nsec > SPIN_DELAY) panic("pll relock failed\n"); } return 0; } static void _clk_pll_disable(struct clk *clk) { u32 reg; u32 pllbase; pllbase = _get_pll_base(clk); reg = __raw_readl(pllbase + MXC_PLL_DP_CTL) & ~MXC_PLL_DP_CTL_UPEN; __raw_writel(reg, pllbase + MXC_PLL_DP_CTL); } static struct clk pll1_main_clk = { .name = "pll1_main_clk", .parent = &osc_clk, .recalc = _clk_pll_recalc, .enable = _clk_pll_enable, .disable = _clk_pll_disable, .flags = RATE_PROPAGATES, }; static int _clk_pll1_sw_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; reg = __raw_readl(MXC_CCM_CCSR); if (parent == &pll1_main_clk) { reg &= ~MXC_CCM_CCSR_PLL1_SW_CLK_SEL; __raw_writel(reg, MXC_CCM_CCSR); /* Set the step_clk parent to be lp_apm, to save power. */ mux = _get_mux(&lp_apm_clk, &lp_apm_clk, NULL, &pll2_sw_clk, &pll3_sw_clk); reg = __raw_readl(MXC_CCM_CCSR); reg = (reg & ~MXC_CCM_CCSR_STEP_SEL_MASK) | (mux << MXC_CCM_CCSR_STEP_SEL_OFFSET); } else { if (parent == &lp_apm_clk) { reg |= MXC_CCM_CCSR_PLL1_SW_CLK_SEL; reg = __raw_readl(MXC_CCM_CCSR); mux = _get_mux(parent, &lp_apm_clk, NULL, &pll2_sw_clk, &pll3_sw_clk); reg = (reg & ~MXC_CCM_CCSR_STEP_SEL_MASK) | (mux << MXC_CCM_CCSR_STEP_SEL_OFFSET); } else { mux = _get_mux(parent, &lp_apm_clk, NULL, &pll2_sw_clk, &pll3_sw_clk); reg = (reg & ~MXC_CCM_CCSR_STEP_SEL_MASK) | (mux << MXC_CCM_CCSR_STEP_SEL_OFFSET); __raw_writel(reg, MXC_CCM_CCSR); reg = __raw_readl(MXC_CCM_CCSR); reg |= MXC_CCM_CCSR_PLL1_SW_CLK_SEL; } } __raw_writel(reg, MXC_CCM_CCSR); return 0; } static void _clk_pll1_sw_recalc(struct clk *clk) { u32 reg, div; div = 1; reg = __raw_readl(MXC_CCM_CCSR); if (clk->parent == &pll2_sw_clk) { div = ((reg & MXC_CCM_CCSR_PLL2_PODF_MASK) >> MXC_CCM_CCSR_PLL2_PODF_OFFSET) + 1; } else if (clk->parent == &pll3_sw_clk) { div = ((reg & MXC_CCM_CCSR_PLL3_PODF_MASK) >> MXC_CCM_CCSR_PLL3_PODF_OFFSET) + 1; } clk->rate = clk->parent->rate / div; } /* pll1 switch clock */ static struct clk pll1_sw_clk = { .name = "pll1_sw_clk", .parent = &pll1_main_clk, .set_parent = _clk_pll1_sw_set_parent, .recalc = _clk_pll1_sw_recalc, .flags = RATE_PROPAGATES, }; static int _clk_pll2_sw_set_parent(struct clk *clk, struct clk *parent) { u32 reg; reg = __raw_readl(MXC_CCM_CCSR); if (parent == &pll2_sw_clk) { reg &= ~MXC_CCM_CCSR_PLL2_SW_CLK_SEL; } else { reg = (reg & ~MXC_CCM_CCSR_PLL2_SW_CLK_SEL); reg |= MXC_CCM_CCSR_PLL2_SW_CLK_SEL; } __raw_writel(reg, MXC_CCM_CCSR); return 0; } /* same as pll2_main_clk. These two clocks should always be the same */ static struct clk pll2_sw_clk = { .name = "pll2", .parent = &osc_clk, .recalc = _clk_pll_recalc, .enable = _clk_pll_enable, .disable = _clk_pll_disable, .set_rate = _clk_pll_set_rate, .set_parent = _clk_pll2_sw_set_parent, .flags = RATE_PROPAGATES, }; /* same as pll3_main_clk. These two clocks should always be the same */ static struct clk pll3_sw_clk = { .name = "pll3", .parent = &osc_clk, .set_rate = _clk_pll_set_rate, .recalc = _clk_pll_recalc, .enable = _clk_pll_enable, .disable = _clk_pll_disable, .flags = RATE_PROPAGATES, }; static int _clk_lp_apm_set_parent(struct clk *clk, struct clk *parent) { u32 reg; if (parent == &osc_clk) reg = __raw_readl(MXC_CCM_CCSR) & ~MXC_CCM_CCSR_LP_APM_SEL; else if (parent == &fpm_clk) reg = __raw_readl(MXC_CCM_CCSR) | MXC_CCM_CCSR_LP_APM_SEL; else return -EINVAL; __raw_writel(reg, MXC_CCM_CCSR); return 0; } static struct clk lp_apm_clk = { .name = "lp_apm", .parent = &osc_clk, .set_parent = _clk_lp_apm_set_parent, .flags = RATE_PROPAGATES, }; static void _clk_arm_recalc(struct clk *clk) { u32 cacrr, div; cacrr = __raw_readl(MXC_CCM_CACRR); div = (cacrr & MXC_CCM_CACRR_ARM_PODF_MASK) + 1; clk->rate = clk->parent->rate / div; } static int _clk_cpu_set_rate(struct clk *clk, unsigned long rate) { u32 i; for (i = 0; i < cpu_wp_nr; i++) { if (rate == cpu_wp_tbl[i].cpu_rate) break; } if (i >= cpu_wp_nr) return -EINVAL; cpu_clk_set_wp(i); return 0; } static unsigned long _clk_cpu_round_rate(struct clk *clk, unsigned long rate) { u32 i; u32 wp; for (i = 0; i < cpu_wp_nr; i++) { if (rate == cpu_wp_tbl[i].cpu_rate) break; } if (i > cpu_wp_nr) wp = 0; return cpu_wp_tbl[wp].cpu_rate; } static struct clk cpu_clk = { .name = "cpu_clk", .parent = &pll1_sw_clk, .recalc = _clk_arm_recalc, .set_rate = _clk_cpu_set_rate, .round_rate = _clk_cpu_round_rate, }; static int _clk_periph_apm_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; struct timespec nstimeofday; struct timespec curtime; mux = _get_mux(parent, &pll1_sw_clk, &pll3_sw_clk, &lp_apm_clk, NULL); reg = __raw_readl(MXC_CCM_CBCMR) & ~MXC_CCM_CBCMR_PERIPH_CLK_SEL_MASK; reg |= mux << MXC_CCM_CBCMR_PERIPH_CLK_SEL_OFFSET; __raw_writel(reg, MXC_CCM_CBCMR); getnstimeofday(&nstimeofday); while (__raw_readl(MXC_CCM_CDHIPR) & MXC_CCM_CDHIPR_PERIPH_CLK_SEL_BUSY) { getnstimeofday(&curtime); if (curtime.tv_nsec - nstimeofday.tv_nsec > SPIN_DELAY) panic("pll _clk_periph_apm_set_parent failed\n"); } return 0; } static struct clk periph_apm_clk = { .name = "periph_apm_clk", .parent = &pll1_sw_clk, .set_parent = _clk_periph_apm_set_parent, .flags = RATE_PROPAGATES, }; /* TODO: Need to sync with GPC to determine if DVFS is in place so that * the DVFS_PODF divider can be applied in CDCR register. */ static void _clk_main_bus_recalc(struct clk *clk) { u32 div; div = (__raw_readl(MXC_CCM_CDCR) & 0x3) + 1; clk->rate = clk->parent->rate / div; } static int _clk_main_bus_set_parent(struct clk *clk, struct clk *parent) { u32 reg; if (emi_fast_clk.usecount == 0) emi_fast_clk.enable(&emi_fast_clk); if (emi_slow_clk.usecount == 0) emi_slow_clk.enable(&emi_slow_clk); if (parent == &pll2_sw_clk) { reg = __raw_readl(MXC_CCM_CBCDR) & ~MXC_CCM_CBCDR_PERIPH_CLK_SEL; } else if (parent == &periph_apm_clk) { reg = __raw_readl(MXC_CCM_CBCDR) | MXC_CCM_CBCDR_PERIPH_CLK_SEL; } else { return -EINVAL; } __raw_writel(reg, MXC_CCM_CBCDR); if (emi_fast_clk.usecount == 0) emi_fast_clk.disable(&emi_fast_clk); if (emi_slow_clk.usecount == 0) emi_slow_clk.disable(&emi_slow_clk); return 0; } static struct clk main_bus_clk = { .name = "main_bus_clk", .parent = &pll2_sw_clk, .set_parent = _clk_main_bus_set_parent, .recalc = _clk_main_bus_recalc, .flags = RATE_PROPAGATES, }; static void _clk_axi_a_recalc(struct clk *clk) { u32 reg, div; reg = __raw_readl(MXC_CCM_CBCDR); div = ((reg & MXC_CCM_CBCDR_AXI_A_PODF_MASK) >> MXC_CCM_CBCDR_AXI_A_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / div; } static int _clk_axi_a_set_rate(struct clk *clk, unsigned long rate) { u32 reg, div; struct timespec nstimeofday; struct timespec curtime; div = clk->parent->rate / rate; if (div == 0) div++; if (((clk->parent->rate / div) != rate) || (div > 8)) return -EINVAL; if (emi_fast_clk.usecount == 0) emi_fast_clk.enable(&emi_fast_clk); if (emi_slow_clk.usecount == 0) emi_slow_clk.enable(&emi_slow_clk); reg = __raw_readl(MXC_CCM_CBCDR); reg &= ~MXC_CCM_CBCDR_AXI_A_PODF_MASK; reg |= (div - 1) << MXC_CCM_CBCDR_AXI_A_PODF_OFFSET; __raw_writel(reg, MXC_CCM_CBCDR); getnstimeofday(&nstimeofday); while (__raw_readl(MXC_CCM_CDHIPR) & MXC_CCM_CDHIPR_AXI_A_PODF_BUSY) { getnstimeofday(&curtime); if (curtime.tv_nsec - nstimeofday.tv_nsec > SPIN_DELAY) panic("pll _clk_axi_a_set_rate failed\n"); } clk->rate = rate; if (emi_fast_clk.usecount == 0) emi_fast_clk.disable(&emi_fast_clk); if (emi_slow_clk.usecount == 0) emi_slow_clk.disable(&emi_slow_clk); return 0; } static unsigned long _clk_axi_a_round_rate(struct clk *clk, unsigned long rate) { u32 div; div = clk->parent->rate / rate; if (div > 8) div = 8; else if (div == 0) div++; return clk->parent->rate / div; } static struct clk axi_a_clk = { .name = "axi_a_clk", .parent = &main_bus_clk, .recalc = _clk_axi_a_recalc, .set_rate = _clk_axi_a_set_rate, .round_rate = _clk_axi_a_round_rate, .flags = RATE_PROPAGATES, }; static void _clk_ddr_hf_recalc(struct clk *clk) { u32 reg, div; reg = __raw_readl(MXC_CCM_CBCDR); div = ((reg & MXC_CCM_CBCDR_DDR_PODF_MASK) >> MXC_CCM_CBCDR_DDR_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / div; } static unsigned long _clk_ddr_hf_round_rate(struct clk *clk, unsigned long rate) { u32 div; div = clk->parent->rate / rate; if (div > 8) div = 8; else if (div == 0) div++; return clk->parent->rate / div; } static int _clk_ddr_hf_set_rate(struct clk *clk, unsigned long rate) { u32 reg, div; struct timespec nstimeofday; struct timespec curtime; div = clk->parent->rate / rate; if (div == 0) div++; if (((clk->parent->rate / div) != rate) || (div > 8)) return -EINVAL; if (emi_fast_clk.usecount == 0) emi_fast_clk.enable(&emi_fast_clk); if (emi_slow_clk.usecount == 0) emi_slow_clk.enable(&emi_slow_clk); reg = __raw_readl(MXC_CCM_CBCDR); reg &= ~MXC_CCM_CBCDR_DDR_PODF_MASK; reg |= (div - 1) << MXC_CCM_CBCDR_DDR_PODF_OFFSET; __raw_writel(reg, MXC_CCM_CBCDR); getnstimeofday(&nstimeofday); while (__raw_readl(MXC_CCM_CDHIPR) & MXC_CCM_CDHIPR_DDR_PODF_BUSY) { getnstimeofday(&curtime); if (curtime.tv_nsec - nstimeofday.tv_nsec > SPIN_DELAY) panic("clk_ddr_hf_set_rate failed\n"); } clk->rate = rate; if (emi_fast_clk.usecount == 0) emi_fast_clk.disable(&emi_fast_clk); if (emi_slow_clk.usecount == 0) emi_slow_clk.disable(&emi_slow_clk); return 0; } static struct clk ddr_hf_clk = { .name = "ddr_hf_clk", .parent = &pll1_sw_clk, .recalc = _clk_ddr_hf_recalc, .round_rate = _clk_ddr_hf_round_rate, .set_rate = _clk_ddr_hf_set_rate, .flags = RATE_PROPAGATES, }; static void _clk_axi_b_recalc(struct clk *clk) { u32 reg, div; reg = __raw_readl(MXC_CCM_CBCDR); div = ((reg & MXC_CCM_CBCDR_AXI_B_PODF_MASK) >> MXC_CCM_CBCDR_AXI_B_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / div; } static int _clk_axi_b_set_rate(struct clk *clk, unsigned long rate) { u32 reg, div; struct timespec nstimeofday; struct timespec curtime; div = clk->parent->rate / rate; if (div == 0) div++; if (((clk->parent->rate / div) != rate) || (div > 8)) return -EINVAL; emi_fast_clk.enable(&emi_fast_clk); if (emi_slow_clk.usecount == 0) emi_slow_clk.enable(&emi_slow_clk); reg = __raw_readl(MXC_CCM_CBCDR); reg &= ~MXC_CCM_CBCDR_AXI_B_PODF_MASK; reg |= (div - 1) << MXC_CCM_CBCDR_AXI_B_PODF_OFFSET; __raw_writel(reg, MXC_CCM_CBCDR); getnstimeofday(&nstimeofday); while (__raw_readl(MXC_CCM_CDHIPR) & MXC_CCM_CDHIPR_AXI_B_PODF_BUSY) { getnstimeofday(&curtime); if (curtime.tv_nsec - nstimeofday.tv_nsec > SPIN_DELAY) panic("_clk_axi_b_set_rate failed\n"); } clk->rate = rate; emi_fast_clk.disable(&emi_fast_clk); if (emi_slow_clk.usecount == 0) emi_slow_clk.disable(&emi_slow_clk); return 0; } static unsigned long _clk_axi_b_round_rate(struct clk *clk, unsigned long rate) { u32 div; div = clk->parent->rate / rate; if (div > 8) div = 8; else if (div == 0) div++; return clk->parent->rate / div; } static struct clk axi_b_clk = { .name = "axi_b_clk", .parent = &main_bus_clk, .recalc = _clk_axi_b_recalc, .set_rate = _clk_axi_b_set_rate, .round_rate = _clk_axi_b_round_rate, .flags = RATE_PROPAGATES, }; static void _clk_ahb_recalc(struct clk *clk) { u32 reg, div; reg = __raw_readl(MXC_CCM_CBCDR); div = ((reg & MXC_CCM_CBCDR_AHB_PODF_MASK) >> MXC_CCM_CBCDR_AHB_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / div; } static int _clk_ahb_set_rate(struct clk *clk, unsigned long rate) { u32 reg, div; struct timespec nstimeofday; struct timespec curtime; div = clk->parent->rate / rate; if (div == 0) div++; if (((clk->parent->rate / div) != rate) || (div > 8)) return -EINVAL; if (emi_fast_clk.usecount == 0) emi_fast_clk.enable(&emi_fast_clk); if (emi_slow_clk.usecount == 0) emi_slow_clk.enable(&emi_slow_clk); reg = __raw_readl(MXC_CCM_CBCDR); reg &= ~MXC_CCM_CBCDR_AHB_PODF_MASK; reg |= (div - 1) << MXC_CCM_CBCDR_AHB_PODF_OFFSET; __raw_writel(reg, MXC_CCM_CBCDR); getnstimeofday(&nstimeofday); while (__raw_readl(MXC_CCM_CDHIPR) & MXC_CCM_CDHIPR_AHB_PODF_BUSY) { getnstimeofday(&curtime); if (curtime.tv_nsec - nstimeofday.tv_nsec > SPIN_DELAY) panic("_clk_ahb_set_rate failed\n"); } clk->rate = rate; if (emi_fast_clk.usecount == 0) emi_fast_clk.disable(&emi_fast_clk); if (emi_slow_clk.usecount == 0) emi_slow_clk.disable(&emi_slow_clk); return 0; } static unsigned long _clk_ahb_round_rate(struct clk *clk, unsigned long rate) { u32 div; div = clk->parent->rate / rate; if (div > 8) div = 8; else if (div == 0) div++; return clk->parent->rate / div; } static struct clk ahb_clk = { .name = "ahb_clk", .parent = &main_bus_clk, .recalc = _clk_ahb_recalc, .set_rate = _clk_ahb_set_rate, .round_rate = _clk_ahb_round_rate, .flags = RATE_PROPAGATES, }; static int _clk_max_enable(struct clk *clk) { u32 reg; _clk_enable(clk); /* Handshake with MAX when LPM is entered. */ reg = __raw_readl(MXC_CCM_CLPCR); reg &= ~MXC_CCM_CLPCR_BYPASS_MAX_LPM_HS; __raw_writel(reg, MXC_CCM_CLPCR); return 0; } static void _clk_max_disable(struct clk *clk) { u32 reg; _clk_disable_inwait(clk); /* No Handshake with MAX when LPM is entered as its disabled. */ reg = __raw_readl(MXC_CCM_CLPCR); reg |= MXC_CCM_CLPCR_BYPASS_MAX_LPM_HS; __raw_writel(reg, MXC_CCM_CLPCR); } static struct clk ahb_max_clk = { .name = "max_clk", .parent = &ahb_clk, .enable_reg = MXC_CCM_CCGR0, .enable_shift = MXC_CCM_CCGR0_CG14_OFFSET, .enable = _clk_max_enable, .disable = _clk_max_disable, }; static int _clk_emi_slow_set_parent(struct clk *clk, struct clk *parent) { u32 reg; if (emi_fast_clk.usecount == 0) emi_fast_clk.enable(&emi_fast_clk); if (emi_slow_clk.usecount == 0) emi_slow_clk.enable(&emi_slow_clk); reg = __raw_readl(MXC_CCM_CBCDR); if (parent == &ahb_clk) { reg |= MXC_CCM_CBCDR_EMI_CLK_SEL; } else if (parent == &main_bus_clk) { reg &= ~MXC_CCM_CBCDR_EMI_CLK_SEL; } else { BUG(); } __raw_writel(reg, MXC_CCM_CBCDR); if (emi_fast_clk.usecount == 0) emi_fast_clk.disable(&emi_fast_clk); if (emi_slow_clk.usecount == 0) emi_slow_clk.disable(&emi_slow_clk); return 0; } static void _clk_emi_slow_recalc(struct clk *clk) { u32 reg, div; reg = __raw_readl(MXC_CCM_CBCDR); div = ((reg & MXC_CCM_CBCDR_EMI_PODF_MASK) >> MXC_CCM_CBCDR_EMI_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / div; } static int _clk_emi_slow_set_rate(struct clk *clk, unsigned long rate) { u32 reg, div; struct timespec nstimeofday; struct timespec curtime; div = clk->parent->rate / rate; if (div == 0) div++; if (((clk->parent->rate / div) != rate) || (div > 8)) return -EINVAL; if (emi_fast_clk.usecount == 0) emi_fast_clk.enable(&emi_fast_clk); reg = __raw_readl(MXC_CCM_CBCDR); reg &= ~MXC_CCM_CBCDR_EMI_PODF_MASK; reg |= (div - 1) << MXC_CCM_CBCDR_EMI_PODF_OFFSET; __raw_writel(reg, MXC_CCM_CBCDR); getnstimeofday(&nstimeofday); while (__raw_readl(MXC_CCM_CDHIPR) & MXC_CCM_CDHIPR_EMI_PODF_BUSY) { getnstimeofday(&curtime); if ((curtime.tv_nsec - nstimeofday.tv_nsec) > SPIN_DELAY) panic("_clk_emi_slow_set_rate failed\n"); } clk->rate = rate; if (emi_fast_clk.usecount == 0) emi_fast_clk.disable(&emi_fast_clk); return 0; } static unsigned long _clk_emi_slow_round_rate(struct clk *clk, unsigned long rate) { u32 div; div = clk->parent->rate / rate; if (div > 8) div = 8; else if (div == 0) div++; return clk->parent->rate / div; } static struct clk emi_slow_clk = { .name = "emi_slow_clk", .parent = &main_bus_clk, .set_parent = _clk_emi_slow_set_parent, .recalc = _clk_emi_slow_recalc, .set_rate = _clk_emi_slow_set_rate, .round_rate = _clk_emi_slow_round_rate, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR5, .enable_shift = MXC_CCM_CCGR5_CG8_OFFSET, .disable = _clk_disable_inwait, .flags = RATE_PROPAGATES, }; static struct clk ahbmux1_clk = { .name = "ahbmux1_clk", .id = 0, .parent = &ahb_clk, .secondary = &ahb_max_clk, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR0, .enable_shift = MXC_CCM_CCGR0_CG8_OFFSET, .disable = _clk_disable_inwait, }; static struct clk ahbmux2_clk = { .name = "ahbmux2_clk", .id = 0, .parent = &ahb_clk, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR0, .enable_shift = MXC_CCM_CCGR0_CG9_OFFSET, .disable = _clk_disable_inwait, }; static struct clk emi_fast_clk = { .name = "emi_fast_clk", .parent = &ddr_clk, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR5, .enable_shift = MXC_CCM_CCGR5_CG7_OFFSET, .disable = _clk_disable_inwait, }; static struct clk emi_intr_clk = { .name = "emi_intr_clk", .parent = &ahb_clk, .secondary = &ahbmux2_clk, .enable_reg = MXC_CCM_CCGR5, .enable_shift = MXC_CCM_CCGR5_CG9_OFFSET, }; static void _clk_ipg_recalc(struct clk *clk) { u32 reg, div; reg = __raw_readl(MXC_CCM_CBCDR); div = ((reg & MXC_CCM_CBCDR_IPG_PODF_MASK) >> MXC_CCM_CBCDR_IPG_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / div; } static struct clk ipg_clk = { .name = "ipg_clk", .parent = &ahb_clk, .recalc = _clk_ipg_recalc, .flags = RATE_PROPAGATES, }; static void _clk_ipg_per_recalc(struct clk *clk) { u32 reg, prediv1, prediv2, podf; if (clk->parent == &main_bus_clk || clk->parent == &lp_apm_clk) { /* the main_bus_clk is the one before the DVFS engine */ reg = __raw_readl(MXC_CCM_CBCDR); prediv1 = ((reg & MXC_CCM_CBCDR_PERCLK_PRED1_MASK) >> MXC_CCM_CBCDR_PERCLK_PRED1_OFFSET) + 1; prediv2 = ((reg & MXC_CCM_CBCDR_PERCLK_PRED2_MASK) >> MXC_CCM_CBCDR_PERCLK_PRED2_OFFSET) + 1; podf = ((reg & MXC_CCM_CBCDR_PERCLK_PODF_MASK) >> MXC_CCM_CBCDR_PERCLK_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / (prediv1 * prediv2 * podf); } else if (clk->parent == &ipg_clk) { clk->rate = ipg_clk.rate; } else { BUG(); } } static int _clk_ipg_per_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; reg = __raw_readl(MXC_CCM_CBCMR); mux = _get_mux(parent, &main_bus_clk, &lp_apm_clk, &ipg_clk, NULL); if (mux == 2) { reg |= MXC_CCM_CBCMR_PERCLK_IPG_CLK_SEL; } else { reg &= ~MXC_CCM_CBCMR_PERCLK_IPG_CLK_SEL; if (mux == 0) reg &= ~MXC_CCM_CBCMR_PERCLK_LP_APM_CLK_SEL; else reg |= MXC_CCM_CBCMR_PERCLK_LP_APM_CLK_SEL; } __raw_writel(reg, MXC_CCM_CBCMR); return 0; } static struct clk ipg_perclk = { .name = "ipg_perclk", .parent = &lp_apm_clk, .recalc = _clk_ipg_per_recalc, .set_parent = _clk_ipg_per_set_parent, .flags = RATE_PROPAGATES, }; static struct clk aips_tz1_clk = { .name = "aips_tz1_clk", .parent = &ahb_clk, .secondary = &ahb_max_clk, .enable_reg = MXC_CCM_CCGR0, .enable_shift = MXC_CCM_CCGR0_CG12_OFFSET, .enable = _clk_enable, .disable = _clk_disable_inwait, }; static struct clk aips_tz2_clk = { .name = "aips_tz2_clk", .parent = &ahb_clk, .secondary = &ahb_max_clk, .enable_reg = MXC_CCM_CCGR0, .enable_shift = MXC_CCM_CCGR0_CG13_OFFSET, .enable = _clk_enable, .disable = _clk_disable_inwait, }; static struct clk gpc_dvfs_clk = { .name = "gpc_dvfs_clk", .enable_reg = MXC_CCM_CCGR5, .enable_shift = MXC_CCM_CCGR5_CG12_OFFSET, .enable = _clk_enable, .disable = _clk_disable, }; static int _clk_sdma_enable(struct clk *clk) { u32 reg; _clk_enable(clk); /* Handshake with SDMA when LPM is entered. */ reg = __raw_readl(MXC_CCM_CLPCR); reg &= ~MXC_CCM_CLPCR_BYPASS_SDMA_LPM_HS; __raw_writel(reg, MXC_CCM_CLPCR); return 0; } static void _clk_sdma_disable(struct clk *clk) { u32 reg; _clk_disable(clk); /* No handshake with SDMA as its not enabled. */ reg = __raw_readl(MXC_CCM_CLPCR); reg |= MXC_CCM_CLPCR_BYPASS_SDMA_LPM_HS; __raw_writel(reg, MXC_CCM_CLPCR); } static struct clk sdma_clk[] = { { .name = "sdma_ahb_clk", .parent = &ahb_clk, .enable_reg = MXC_CCM_CCGR4, .enable_shift = MXC_CCM_CCGR4_CG15_OFFSET, .enable = _clk_sdma_enable, .disable = _clk_sdma_disable, }, { .name = "sdma_ipg_clk", .parent = &ipg_clk, #ifdef CONFIG_SDMA_IRAM .secondary = &emi_intr_clk, #endif }, }; static int _clk_ipu_enable(struct clk *clk) { u32 reg; _clk_enable(clk); /* Handshake with IPU when certain clock rates are changed. */ reg = __raw_readl(MXC_CCM_CCDR); reg &= ~MXC_CCM_CCDR_IPU_HS_MASK; __raw_writel(reg, MXC_CCM_CCDR); /* Handshake with IPU when LPM is entered as its enabled. */ reg = __raw_readl(MXC_CCM_CLPCR); reg &= ~MXC_CCM_CLPCR_BYPASS_IPU_LPM_HS; __raw_writel(reg, MXC_CCM_CLPCR); return 0; } static void _clk_ipu_disable(struct clk *clk) { u32 reg; _clk_disable(clk); /* No handshake with IPU whe dividers are changed * as its not enabled. */ reg = __raw_readl(MXC_CCM_CCDR); reg |= MXC_CCM_CCDR_IPU_HS_MASK; __raw_writel(reg, MXC_CCM_CCDR); /* No handshake with IPU when LPM is entered as its not enabled. */ reg = __raw_readl(MXC_CCM_CLPCR); reg |= MXC_CCM_CLPCR_BYPASS_IPU_LPM_HS; __raw_writel(reg, MXC_CCM_CLPCR); } static int _clk_ipu_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; reg = __raw_readl(MXC_CCM_CBCMR); mux = _get_mux(parent, &axi_a_clk, &axi_b_clk, &ahb_clk, &emi_slow_clk); reg = (reg & ~MXC_CCM_CBCMR_IPU_HSP_CLK_SEL_MASK) | (mux << MXC_CCM_CBCMR_IPU_HSP_CLK_SEL_OFFSET); __raw_writel(reg, MXC_CCM_CBCMR); return 0; } static struct clk ipu_clk[] = { { .name = "ipu_clk", .parent = &ahb_clk, .secondary = &ipu_clk[1], .enable_reg = MXC_CCM_CCGR5, .enable_shift = MXC_CCM_CCGR5_CG5_OFFSET, .enable = _clk_ipu_enable, .disable = _clk_ipu_disable, .set_parent = _clk_ipu_set_parent, .flags = CPU_FREQ_TRIG_UPDATE | AHB_MED_SET_POINT, }, { .name = "ipu_sec_clk", .parent = &emi_fast_clk, .secondary = &ahbmux1_clk, } }; static int _clk_ipu_di_set_parent(struct clk *clk, struct clk *parent) { u32 reg; reg = __raw_readl(MXC_CCM_CSCMR2); reg &= ~MXC_CCM_CSCMR2_DI_CLK_SEL_MASK(clk->id); if (parent == &pll3_sw_clk) ; else if (parent == &osc_clk) reg |= 1 << MXC_CCM_CSCMR2_DI_CLK_SEL_OFFSET(clk->id); else if (parent == &ckih_clk) reg |= 2 << MXC_CCM_CSCMR2_DI_CLK_SEL_OFFSET(clk->id); else if (parent == &tve_clk) reg |= 3 << MXC_CCM_CSCMR2_DI_CLK_SEL_OFFSET(clk->id); else /* Assume any other clock is external clock pin */ reg |= 4 << MXC_CCM_CSCMR2_DI_CLK_SEL_OFFSET(clk->id); __raw_writel(reg, MXC_CCM_CSCMR2); return 0; } static void _clk_ipu_di_recalc(struct clk *clk) { u32 reg, div, mux; reg = __raw_readl(MXC_CCM_CSCMR2); mux = (reg & MXC_CCM_CSCMR2_DI_CLK_SEL_MASK(clk->id)) >> MXC_CCM_CSCMR2_DI_CLK_SEL_OFFSET(clk->id); if (mux == 0) { reg = __raw_readl(MXC_CCM_CDCDR) & MXC_CCM_CDCDR_DI_CLK_PRED_MASK; div = (reg >> MXC_CCM_CDCDR_DI_CLK_PRED_OFFSET) + 1; clk->rate = clk->parent->rate / div; } else if (mux == 3) { clk->rate = clk->parent->rate / 8; } else { clk->rate = clk->parent->rate; } } static int _clk_ipu_di_set_rate(struct clk *clk, unsigned long rate) { u32 reg, div; div = clk->parent->rate / rate; if (div == 0) div++; if (((clk->parent->rate / div) != rate) || (div > 8)) return -EINVAL; reg = __raw_readl(MXC_CCM_CDCDR); reg &= ~MXC_CCM_CDCDR_DI_CLK_PRED_MASK; reg |= (div - 1) << MXC_CCM_CDCDR_DI_CLK_PRED_OFFSET; __raw_writel(reg, MXC_CCM_CDCDR); clk->rate = rate; return 0; } static unsigned long _clk_ipu_di_round_rate(struct clk *clk, unsigned long rate) { u32 div; div = clk->parent->rate / rate; if (div > 8) div = 8; else if (div == 0) div++; return clk->parent->rate / div; } static struct clk ipu_di_clk[] = { { .name = "ipu_di0_clk", .id = 0, .parent = &pll3_sw_clk, .enable_reg = MXC_CCM_CCGR6, .enable_shift = MXC_CCM_CCGR6_CG5_OFFSET, .recalc = _clk_ipu_di_recalc, .set_parent = _clk_ipu_di_set_parent, .round_rate = _clk_ipu_di_round_rate, .set_rate = _clk_ipu_di_set_rate, .enable = _clk_enable, .disable = _clk_disable, }, { .name = "ipu_di1_clk", .id = 1, .parent = &pll3_sw_clk, .enable_reg = MXC_CCM_CCGR6, .enable_shift = MXC_CCM_CCGR6_CG6_OFFSET, .recalc = _clk_ipu_di_recalc, .set_parent = _clk_ipu_di_set_parent, .round_rate = _clk_ipu_di_round_rate, .set_rate = _clk_ipu_di_set_rate, .enable = _clk_enable, .disable = _clk_disable, }, }; static int _clk_csi0_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; reg = __raw_readl(MXC_CCM_CSCMR2); mux = _get_mux(parent, &pll1_sw_clk, &pll2_sw_clk, &pll3_sw_clk, NULL); reg = (reg & ~MXC_CCM_CSCMR2_CSI_MCLK1_CLK_SEL_MASK) | (mux << MXC_CCM_CSCMR2_CSI_MCLK1_CLK_SEL_OFFSET); __raw_writel(reg, MXC_CCM_CSCMR2); return 0; } static void _clk_csi0_recalc(struct clk *clk) { u32 reg, pred, podf; reg = __raw_readl(MXC_CCM_CSCDR4); pred = ((reg & MXC_CCM_CSCDR4_CSI_MCLK1_CLK_PRED_MASK) >> MXC_CCM_CSCDR4_CSI_MCLK1_CLK_PRED_OFFSET) + 1; podf = ((reg & MXC_CCM_CSCDR4_CSI_MCLK1_CLK_PODF_MASK) >> MXC_CCM_CSCDR4_CSI_MCLK1_CLK_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / (pred * podf); } static unsigned long _clk_csi0_round_rate(struct clk *clk, unsigned long rate) { u32 pre, post; u32 div = clk->parent->rate / rate; if (clk->parent->rate % rate) div++; __calc_pre_post_dividers(div, &pre, &post); return clk->parent->rate / (pre * post); } static int _clk_csi0_set_rate(struct clk *clk, unsigned long rate) { u32 reg; u32 div; u32 pre, post; div = clk->parent->rate / rate; if ((clk->parent->rate / div) != rate) return -EINVAL; __calc_pre_post_dividers(div, &pre, &post); /* Set CSI clock divider */ reg = __raw_readl(MXC_CCM_CSCDR4) & ~(MXC_CCM_CSCDR4_CSI_MCLK1_CLK_PRED_MASK | MXC_CCM_CSCDR4_CSI_MCLK1_CLK_PODF_MASK); reg |= (post - 1) << MXC_CCM_CSCDR4_CSI_MCLK1_CLK_PODF_OFFSET; reg |= (pre - 1) << MXC_CCM_CSCDR4_CSI_MCLK1_CLK_PRED_OFFSET; __raw_writel(reg, MXC_CCM_CSCDR4); clk->rate = rate; return 0; } static struct clk csi0_clk = { .name = "csi_mclk1", .parent = &pll3_sw_clk, .set_parent = _clk_csi0_set_parent, .recalc = _clk_csi0_recalc, .round_rate = _clk_csi0_round_rate, .set_rate = _clk_csi0_set_rate, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR6, .enable_shift = MXC_CCM_CCGR6_CG2_OFFSET, .disable = _clk_disable, }; static int _clk_csi1_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; reg = __raw_readl(MXC_CCM_CSCMR2); mux = _get_mux(parent, &pll1_sw_clk, &pll2_sw_clk, &pll3_sw_clk, NULL); reg = (reg & ~MXC_CCM_CSCMR2_CSI_MCLK2_CLK_SEL_MASK) | (mux << MXC_CCM_CSCMR2_CSI_MCLK2_CLK_SEL_OFFSET); __raw_writel(reg, MXC_CCM_CSCMR2); return 0; } static void _clk_csi1_recalc(struct clk *clk) { u32 reg, pred, podf; reg = __raw_readl(MXC_CCM_CSCDR4); pred = ((reg & MXC_CCM_CSCDR4_CSI_MCLK2_CLK_PRED_MASK) >> MXC_CCM_CSCDR4_CSI_MCLK2_CLK_PRED_OFFSET) + 1; podf = ((reg & MXC_CCM_CSCDR4_CSI_MCLK2_CLK_PODF_MASK) >> MXC_CCM_CSCDR4_CSI_MCLK2_CLK_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / (pred * podf); } static unsigned long _clk_csi1_round_rate(struct clk *clk, unsigned long rate) { u32 pre, post; u32 div = clk->parent->rate / rate; if (clk->parent->rate % rate) div++; __calc_pre_post_dividers(div, &pre, &post); return clk->parent->rate / (pre * post); } static int _clk_csi1_set_rate(struct clk *clk, unsigned long rate) { u32 reg; u32 div; u32 pre, post; div = clk->parent->rate / rate; if ((clk->parent->rate / div) != rate) return -EINVAL; __calc_pre_post_dividers(div, &pre, &post); /* Set CSI clock divider */ reg = __raw_readl(MXC_CCM_CSCDR4) & ~(MXC_CCM_CSCDR4_CSI_MCLK2_CLK_PRED_MASK | MXC_CCM_CSCDR4_CSI_MCLK2_CLK_PODF_MASK); reg |= (post - 1) << MXC_CCM_CSCDR4_CSI_MCLK2_CLK_PODF_OFFSET; reg |= (pre - 1) << MXC_CCM_CSCDR4_CSI_MCLK2_CLK_PRED_OFFSET; __raw_writel(reg, MXC_CCM_CSCDR4); clk->rate = rate; return 0; } static struct clk csi1_clk = { .name = "csi_mclk2", .parent = &pll3_sw_clk, .set_parent = _clk_csi1_set_parent, .recalc = _clk_csi1_recalc, .round_rate = _clk_csi1_round_rate, .set_rate = _clk_csi1_set_rate, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR6, .enable_shift = MXC_CCM_CCGR6_CG3_OFFSET, .disable = _clk_disable, }; static int _clk_hsc_enable(struct clk *clk) { u32 reg; _clk_enable(clk); /* Handshake with IPU when certain clock rates are changed. */ reg = __raw_readl(MXC_CCM_CCDR); reg &= ~MXC_CCM_CCDR_HSC_HS_MASK; __raw_writel(reg, MXC_CCM_CCDR); reg = __raw_readl(MXC_CCM_CLPCR); reg &= ~MXC_CCM_CLPCR_BYPASS_HSC_LPM_HS; __raw_writel(reg, MXC_CCM_CLPCR); return 0; } static void _clk_hsc_disable(struct clk *clk) { u32 reg; _clk_disable(clk); /* No handshake with HSC as its not enabled. */ reg = __raw_readl(MXC_CCM_CCDR); reg |= MXC_CCM_CCDR_HSC_HS_MASK; __raw_writel(reg, MXC_CCM_CCDR); reg = __raw_readl(MXC_CCM_CLPCR); reg |= MXC_CCM_CLPCR_BYPASS_HSC_LPM_HS; __raw_writel(reg, MXC_CCM_CLPCR); } static struct clk mipi_esc_clk = { .name = "mipi_esc_clk", .parent = &pll2_sw_clk, .enable_reg = MXC_CCM_CCGR4, .enable_shift = MXC_CCM_CCGR4_CG5_OFFSET, }; static struct clk mipi_hsc2_clk = { .name = "mipi_hsc2_clk", .parent = &pll2_sw_clk, .enable_reg = MXC_CCM_CCGR4, .enable_shift = MXC_CCM_CCGR4_CG4_OFFSET, .secondary = &mipi_esc_clk, }; static struct clk mipi_hsc1_clk = { .name = "mipi_hsc1_clk", .parent = &pll2_sw_clk, .enable_reg = MXC_CCM_CCGR4, .enable_shift = MXC_CCM_CCGR4_CG3_OFFSET, .secondary = &mipi_hsc2_clk, }; static struct clk mipi_hsp_clk = { .name = "mipi_hsp_clk", .parent = &ipu_clk[0], .enable_reg = MXC_CCM_CCGR4, .enable_shift = MXC_CCM_CCGR4_CG6_OFFSET, .enable = _clk_hsc_enable, .disable = _clk_hsc_disable, .secondary = &mipi_hsc1_clk, }; static int _clk_tve_set_parent(struct clk *clk, struct clk *parent) { u32 reg; reg = __raw_readl(MXC_CCM_CSCMR1); if (parent == &pll3_sw_clk) { reg &= ~(MXC_CCM_CSCMR1_TVE_CLK_SEL); } else if (parent == &osc_clk) { reg |= MXC_CCM_CSCMR1_TVE_CLK_SEL; reg &= MXC_CCM_CSCMR1_TVE_EXT_CLK_SEL; } else if (parent == &ckih_clk) { reg |= MXC_CCM_CSCMR1_TVE_CLK_SEL; reg |= MXC_CCM_CSCMR1_TVE_EXT_CLK_SEL; } else { BUG(); } __raw_writel(reg, MXC_CCM_CSCMR1); return 0; } static void _clk_tve_recalc(struct clk *clk) { u32 reg, div; reg = __raw_readl(MXC_CCM_CSCMR1); if ((reg & MXC_CCM_CSCMR1_TVE_CLK_SEL) == 0) { reg = __raw_readl(MXC_CCM_CDCDR) & MXC_CCM_CDCDR_TVE_CLK_PRED_MASK; div = (reg >> MXC_CCM_CDCDR_TVE_CLK_PRED_OFFSET) + 1; clk->rate = clk->parent->rate / div; } else { clk->rate = clk->parent->rate; } } static unsigned long _clk_tve_round_rate(struct clk *clk, unsigned long rate) { u32 reg, div; reg = __raw_readl(MXC_CCM_CSCMR1); if (reg & MXC_CCM_CSCMR1_TVE_CLK_SEL) return -EINVAL; div = clk->parent->rate / rate; if (div > 8) div = 8; else if (div == 0) div++; return clk->parent->rate / div; } static int _clk_tve_set_rate(struct clk *clk, unsigned long rate) { u32 reg, div; reg = __raw_readl(MXC_CCM_CSCMR1); if (reg & MXC_CCM_CSCMR1_TVE_CLK_SEL) return -EINVAL; div = clk->parent->rate / rate; if (div == 0) div++; if (((clk->parent->rate / div) != rate) || (div > 8)) return -EINVAL; div--; reg = __raw_readl(MXC_CCM_CDCDR) & ~MXC_CCM_CDCDR_TVE_CLK_PRED_MASK; reg |= div << MXC_CCM_CDCDR_TVE_CLK_PRED_OFFSET; __raw_writel(reg, MXC_CCM_CDCDR); clk->rate = rate; return 0; } static struct clk tve_clk = { .name = "tve_clk", .parent = &pll3_sw_clk, .set_parent = _clk_tve_set_parent, .enable_reg = MXC_CCM_CCGR2, .enable_shift = MXC_CCM_CCGR2_CG15_OFFSET, .recalc = _clk_tve_recalc, .round_rate = _clk_tve_round_rate, .set_rate = _clk_tve_set_rate, .enable = _clk_enable, .disable = _clk_disable, .flags = AHB_HIGH_SET_POINT | CPU_FREQ_TRIG_UPDATE, }; static struct clk spba_clk = { .name = "spba_clk", .parent = &ipg_clk, .enable_reg = MXC_CCM_CCGR5, .enable_shift = MXC_CCM_CCGR5_CG0_OFFSET, .enable = _clk_enable, .disable = _clk_disable, }; static void _clk_uart_recalc(struct clk *clk) { u32 reg, prediv, podf; reg = __raw_readl(MXC_CCM_CSCDR1); prediv = ((reg & MXC_CCM_CSCDR1_UART_CLK_PRED_MASK) >> MXC_CCM_CSCDR1_UART_CLK_PRED_OFFSET) + 1; podf = ((reg & MXC_CCM_CSCDR1_UART_CLK_PODF_MASK) >> MXC_CCM_CSCDR1_UART_CLK_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / (prediv * podf); } static int _clk_uart_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; mux = _get_mux(parent, &pll1_sw_clk, &pll2_sw_clk, &pll3_sw_clk, &lp_apm_clk); reg = __raw_readl(MXC_CCM_CSCMR1) & ~MXC_CCM_CSCMR1_UART_CLK_SEL_MASK; reg |= mux << MXC_CCM_CSCMR1_UART_CLK_SEL_OFFSET; __raw_writel(reg, MXC_CCM_CSCMR1); return 0; } static struct clk uart_main_clk = { .name = "uart_main_clk", .parent = &pll2_sw_clk, .recalc = _clk_uart_recalc, .set_parent = _clk_uart_set_parent, .flags = RATE_PROPAGATES, }; static struct clk uart1_clk[] = { { .name = "uart_clk", .id = 0, .parent = &uart_main_clk, .secondary = &uart1_clk[1], .enable_reg = MXC_CCM_CCGR1, .enable_shift = MXC_CCM_CCGR1_CG4_OFFSET, .enable = _clk_enable, .disable = _clk_disable, #ifdef UART1_DMA_ENABLE .flags = AHB_HIGH_SET_POINT | CPU_FREQ_TRIG_UPDATE, #endif }, { .name = "uart_ipg_clk", .id = 0, .parent = &ipg_clk, #ifdef UART1_DMA_ENABLE .secondary = &aips_tz1_clk, #endif .enable_reg = MXC_CCM_CCGR1, .enable_shift = MXC_CCM_CCGR1_CG3_OFFSET, .enable = _clk_enable, .disable = _clk_disable, }, }; static struct clk uart2_clk[] = { { .name = "uart_clk", .id = 1, .parent = &uart_main_clk, .secondary = &uart2_clk[1], .enable_reg = MXC_CCM_CCGR1, .enable_shift = MXC_CCM_CCGR1_CG6_OFFSET, .enable = _clk_enable, .disable = _clk_disable, #ifdef UART2_DMA_ENABLE .flags = AHB_HIGH_SET_POINT | CPU_FREQ_TRIG_UPDATE, #endif }, { .name = "uart_ipg_clk", .id = 1, .parent = &ipg_clk, #ifdef UART2_DMA_ENABLE .secondary = &aips_tz1_clk, #endif .enable_reg = MXC_CCM_CCGR1, .enable_shift = MXC_CCM_CCGR1_CG5_OFFSET, .enable = _clk_enable, .disable = _clk_disable, }, }; static struct clk uart3_clk[] = { { .name = "uart_clk", .id = 2, .parent = &uart_main_clk, .secondary = &uart3_clk[1], .enable_reg = MXC_CCM_CCGR1, .enable_shift = MXC_CCM_CCGR1_CG8_OFFSET, .enable = _clk_enable, .disable = _clk_disable, #ifdef UART3_DMA_ENABLE .flags = AHB_HIGH_SET_POINT | CPU_FREQ_TRIG_UPDATE, #endif }, { .name = "uart_ipg_clk", .id = 2, .parent = &ipg_clk, .secondary = &spba_clk, .enable_reg = MXC_CCM_CCGR1, .enable_shift = MXC_CCM_CCGR1_CG7_OFFSET, .enable = _clk_enable, .disable = _clk_disable, }, }; static struct clk gpt_clk[] = { { .name = "gpt_clk", .parent = &ipg_perclk, .id = 0, .enable_reg = MXC_CCM_CCGR2, .enable_shift = MXC_CCM_CCGR2_CG9_OFFSET, .enable = _clk_enable, .disable = _clk_disable, .secondary = &gpt_clk[1], }, { .name = "gpt_ipg_clk", .id = 0, .parent = &ipg_clk, .enable_reg = MXC_CCM_CCGR2, .enable_shift = MXC_CCM_CCGR2_CG10_OFFSET, .enable = _clk_enable, .disable = _clk_disable, }, { .name = "gpt_32k_clk", .id = 0, .parent = &ckil_clk, }, }; static struct clk pwm1_clk[] = { { .name = "pwm", .parent = &ipg_perclk, .id = 0, .enable_reg = MXC_CCM_CCGR2, .enable_shift = MXC_CCM_CCGR2_CG6_OFFSET, .enable = _clk_enable, .disable = _clk_disable, .secondary = &pwm1_clk[1], }, { .name = "pwm_ipg_clk", .id = 0, .parent = &ipg_clk, .enable_reg = MXC_CCM_CCGR2, .enable_shift = MXC_CCM_CCGR2_CG5_OFFSET, .enable = _clk_enable_inwait, /*Active only when ARM is running. */ .disable = _clk_disable, }, { .name = "pwm_32k_clk", .id = 0, .parent = &ckil_clk, }, }; static struct clk pwm2_clk[] = { { .name = "pwm", .parent = &ipg_perclk, .id = 1, .enable_reg = MXC_CCM_CCGR2, .enable_shift = MXC_CCM_CCGR2_CG8_OFFSET, .enable = _clk_enable, .disable = _clk_disable, .secondary = &pwm2_clk[1], }, { .name = "pwm_ipg_clk", .id = 1, .parent = &ipg_clk, .enable_reg = MXC_CCM_CCGR2, .enable_shift = MXC_CCM_CCGR2_CG7_OFFSET, .enable = _clk_enable_inwait, /*Active only when ARM is running. */ .disable = _clk_disable, }, { .name = "pwm_32k_clk", .id = 1, .parent = &ckil_clk, }, }; static struct clk i2c_clk[] = { { .name = "i2c_clk", .id = 0, .parent = &ipg_perclk, .enable_reg = MXC_CCM_CCGR1, .enable_shift = MXC_CCM_CCGR1_CG9_OFFSET, .enable = _clk_enable, .disable = _clk_disable, }, { .name = "i2c_clk", .id = 1, .parent = &ipg_perclk, .enable_reg = MXC_CCM_CCGR1, .enable_shift = MXC_CCM_CCGR1_CG10_OFFSET, .enable = _clk_enable, .disable = _clk_disable, }, }; static void _clk_hsi2c_serial_recalc(struct clk *clk) { u32 reg, prediv, podf; reg = __raw_readl(MXC_CCM_CSCDR3); prediv = ((reg & MXC_CCM_CSCDR3_HSI2C_CLK_PRED_MASK) >> MXC_CCM_CSCDR3_HSI2C_CLK_PRED_OFFSET) + 1; podf = ((reg & MXC_CCM_CSCDR3_HSI2C_CLK_PODF_MASK) >> MXC_CCM_CSCDR3_HSI2C_CLK_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / (prediv * podf); } static struct clk hsi2c_serial_clk = { .name = "hsi2c_serial_clk", .id = 0, .parent = &pll3_sw_clk, .secondary = &spba_clk, .enable_reg = MXC_CCM_CCGR1, .enable_shift = MXC_CCM_CCGR1_CG11_OFFSET, .recalc = _clk_hsi2c_serial_recalc, .enable = _clk_enable, .disable = _clk_disable, }; static struct clk hsi2c_clk = { .name = "hsi2c_clk", .id = 0, .parent = &ipg_clk, .enable_reg = MXC_CCM_CCGR1, .enable_shift = MXC_CCM_CCGR1_CG12_OFFSET, .enable = _clk_enable, .disable = _clk_disable, .flags = AHB_HIGH_SET_POINT | CPU_FREQ_TRIG_UPDATE, }; static void _clk_cspi_recalc(struct clk *clk) { u32 reg, prediv, podf; reg = __raw_readl(MXC_CCM_CSCDR2); prediv = ((reg & MXC_CCM_CSCDR2_CSPI_CLK_PRED_MASK) >> MXC_CCM_CSCDR2_CSPI_CLK_PRED_OFFSET) + 1; if (prediv == 1) BUG(); podf = ((reg & MXC_CCM_CSCDR2_CSPI_CLK_PODF_MASK) >> MXC_CCM_CSCDR2_CSPI_CLK_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / (prediv * podf); } static int _clk_cspi_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; mux = _get_mux(parent, &pll1_sw_clk, &pll2_sw_clk, &pll3_sw_clk, &lp_apm_clk); reg = __raw_readl(MXC_CCM_CSCMR1) & ~MXC_CCM_CSCMR1_CSPI_CLK_SEL_MASK; reg |= mux << MXC_CCM_CSCMR1_CSPI_CLK_SEL_OFFSET; __raw_writel(reg, MXC_CCM_CSCMR1); return 0; } static struct clk cspi_main_clk = { .name = "cspi_main_clk", .parent = &pll3_sw_clk, .recalc = _clk_cspi_recalc, .set_parent = _clk_cspi_set_parent, .flags = RATE_PROPAGATES, }; static struct clk cspi1_clk[] = { { .name = "cspi_clk", .id = 0, .parent = &cspi_main_clk, .secondary = &cspi1_clk[1], .enable_reg = MXC_CCM_CCGR4, .enable_shift = MXC_CCM_CCGR4_CG10_OFFSET, .enable = _clk_enable, .disable = _clk_disable, }, { .name = "cspi_ipg_clk", .id = 0, .parent = &ipg_clk, .secondary = &spba_clk, .enable_reg = MXC_CCM_CCGR4, .enable_shift = MXC_CCM_CCGR4_CG9_OFFSET, .enable = _clk_enable_inwait, /*Active only when ARM is running. */ .disable = _clk_disable, }, }; static struct clk cspi2_clk[] = { { .name = "cspi_clk", .id = 1, .parent = &cspi_main_clk, .secondary = &cspi2_clk[1], .enable_reg = MXC_CCM_CCGR4, .enable_shift = MXC_CCM_CCGR4_CG12_OFFSET, .enable = _clk_enable, .disable = _clk_disable, }, { .name = "cspi_ipg_clk", .id = 1, .parent = &ipg_clk, .secondary = &aips_tz2_clk, .enable_reg = MXC_CCM_CCGR4, .enable_shift = MXC_CCM_CCGR4_CG11_OFFSET, .enable = _clk_enable_inwait, /*Active only when ARM is running. */ .disable = _clk_disable, }, }; static struct clk cspi3_clk[] = { { .name = "cspi_clk", .id = 2, .parent = &cspi_main_clk, .enable_reg = MXC_CCM_CCGR4, .enable_shift = MXC_CCM_CCGR4_CG13_OFFSET, .enable = _clk_enable, .disable = _clk_disable, .secondary = &cspi3_clk[1], }, { .name = "cspi_ipg_clk", .id = 2, .parent = &ipg_clk, .secondary = &aips_tz2_clk, }, }; static int _clk_ssi_lp_apm_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; mux = _get_mux(parent, &ckih_clk, &lp_apm_clk, &ckih2_clk, NULL); reg = __raw_readl(MXC_CCM_CSCMR1) & ~MXC_CCM_CSCMR1_SSI_APM_CLK_SEL_MASK; reg |= mux << MXC_CCM_CSCMR1_SSI_APM_CLK_SEL_OFFSET; __raw_writel(reg, MXC_CCM_CSCMR1); return 0; } static struct clk ssi_lp_apm_clk = { .name = "ssi_lp_apm_clk", .parent = &ckih_clk, .set_parent = _clk_ssi_lp_apm_set_parent, }; static void _clk_ssi1_recalc(struct clk *clk) { u32 reg, prediv, podf; reg = __raw_readl(MXC_CCM_CS1CDR); prediv = ((reg & MXC_CCM_CS1CDR_SSI1_CLK_PRED_MASK) >> MXC_CCM_CS1CDR_SSI1_CLK_PRED_OFFSET) + 1; if (prediv == 1) BUG(); podf = ((reg & MXC_CCM_CS1CDR_SSI1_CLK_PODF_MASK) >> MXC_CCM_CS1CDR_SSI1_CLK_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / (prediv * podf); } static int _clk_ssi1_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; mux = _get_mux(parent, &pll1_sw_clk, &pll2_sw_clk, &pll3_sw_clk, &ssi_lp_apm_clk); reg = __raw_readl(MXC_CCM_CSCMR1) & ~MXC_CCM_CSCMR1_SSI1_CLK_SEL_MASK; reg |= mux << MXC_CCM_CSCMR1_SSI1_CLK_SEL_OFFSET; __raw_writel(reg, MXC_CCM_CSCMR1); return 0; } static struct clk ssi1_clk[] = { { .name = "ssi_clk", .id = 0, .parent = &pll3_sw_clk, .set_parent = _clk_ssi1_set_parent, .secondary = &ssi1_clk[1], .recalc = _clk_ssi1_recalc, .enable_reg = MXC_CCM_CCGR3, .enable_shift = MXC_CCM_CCGR3_CG9_OFFSET, .enable = _clk_enable, .disable = _clk_disable, }, { .name = "ssi_ipg_clk", .id = 0, .parent = &ipg_clk, .secondary = &ssi1_clk[2], .enable_reg = MXC_CCM_CCGR3, .enable_shift = MXC_CCM_CCGR3_CG8_OFFSET, .enable = _clk_enable, .disable = _clk_disable, }, { .name = "ssi_dep_clk", .id = 0, .parent = &aips_tz2_clk, #ifdef CONFIG_SND_MXC_SOC_IRAM .secondary = &emi_intr_clk, #else .secondary = &emi_fast_clk, #endif }, }; static void _clk_ssi2_recalc(struct clk *clk) { u32 reg, prediv, podf; reg = __raw_readl(MXC_CCM_CS2CDR); prediv = ((reg & MXC_CCM_CS2CDR_SSI2_CLK_PRED_MASK) >> MXC_CCM_CS2CDR_SSI2_CLK_PRED_OFFSET) + 1; if (prediv == 1) BUG(); podf = ((reg & MXC_CCM_CS2CDR_SSI2_CLK_PODF_MASK) >> MXC_CCM_CS2CDR_SSI2_CLK_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / (prediv * podf); } static int _clk_ssi2_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; mux = _get_mux(parent, &pll1_sw_clk, &pll2_sw_clk, &pll3_sw_clk, &ssi_lp_apm_clk); reg = __raw_readl(MXC_CCM_CSCMR1) & ~MXC_CCM_CSCMR1_SSI2_CLK_SEL_MASK; reg |= mux << MXC_CCM_CSCMR1_SSI2_CLK_SEL_OFFSET; __raw_writel(reg, MXC_CCM_CSCMR1); return 0; } static struct clk ssi2_clk[] = { { .name = "ssi_clk", .id = 1, .parent = &pll3_sw_clk, .set_parent = _clk_ssi2_set_parent, .secondary = &ssi2_clk[1], .recalc = _clk_ssi2_recalc, .enable_reg = MXC_CCM_CCGR3, .enable_shift = MXC_CCM_CCGR3_CG11_OFFSET, .enable = _clk_enable, .disable = _clk_disable, }, { .name = "ssi_ipg_clk", .id = 1, .parent = &ipg_clk, .secondary = &ssi2_clk[2], .enable_reg = MXC_CCM_CCGR3, .enable_shift = MXC_CCM_CCGR3_CG10_OFFSET, .enable = _clk_enable, .disable = _clk_disable, }, { .name = "ssi_dep_clk", .id = 1, .parent = &spba_clk, #ifdef CONFIG_SND_MXC_SOC_IRAM .secondary = &emi_intr_clk, #else .secondary = &emi_fast_clk, #endif }, }; static void _clk_ssi_ext1_recalc(struct clk *clk) { u32 reg, prediv, podf; clk->rate = clk->parent->rate; reg = __raw_readl(MXC_CCM_CSCMR1); if ((reg & MXC_CCM_CSCMR1_SSI_EXT1_COM_CLK_SEL) == 0) { reg = __raw_readl(MXC_CCM_CS1CDR); prediv = ((reg & MXC_CCM_CS1CDR_SSI_EXT1_CLK_PRED_MASK) >> MXC_CCM_CS1CDR_SSI_EXT1_CLK_PRED_OFFSET) + 1; if (prediv == 1) BUG(); podf = ((reg & MXC_CCM_CS1CDR_SSI_EXT1_CLK_PODF_MASK) >> MXC_CCM_CS1CDR_SSI_EXT1_CLK_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / (prediv * podf); } } static int _clk_ssi_ext1_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; reg = __raw_readl(MXC_CCM_CSCMR1); if (parent == &ssi1_clk[0]) { reg |= MXC_CCM_CSCMR1_SSI_EXT1_COM_CLK_SEL; } else { reg &= ~MXC_CCM_CSCMR1_SSI_EXT1_COM_CLK_SEL; mux = _get_mux(parent, &pll1_sw_clk, &pll2_sw_clk, &pll3_sw_clk, &ssi_lp_apm_clk); reg = (reg & ~MXC_CCM_CSCMR1_SSI_EXT1_CLK_SEL_MASK) | (mux << MXC_CCM_CSCMR1_SSI_EXT1_CLK_SEL_OFFSET); } __raw_writel(reg, MXC_CCM_CSCMR1); return 0; } static struct clk ssi_ext1_clk = { .name = "ssi_ext1_clk", .parent = &pll3_sw_clk, .set_parent = _clk_ssi_ext1_set_parent, .recalc = _clk_ssi_ext1_recalc, .enable_reg = MXC_CCM_CCGR3, .enable_shift = MXC_CCM_CCGR3_CG14_OFFSET, .enable = _clk_enable, .disable = _clk_disable, }; static void _clk_ssi_ext2_recalc(struct clk *clk) { u32 reg, prediv, podf; clk->rate = clk->parent->rate; reg = __raw_readl(MXC_CCM_CSCMR1); if ((reg & MXC_CCM_CSCMR1_SSI_EXT2_COM_CLK_SEL) == 0) { reg = __raw_readl(MXC_CCM_CS2CDR); prediv = ((reg & MXC_CCM_CS2CDR_SSI_EXT2_CLK_PRED_MASK) >> MXC_CCM_CS2CDR_SSI_EXT2_CLK_PRED_OFFSET) + 1; if (prediv == 1) BUG(); podf = ((reg & MXC_CCM_CS2CDR_SSI_EXT2_CLK_PODF_MASK) >> MXC_CCM_CS2CDR_SSI_EXT2_CLK_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / (prediv * podf); } } static int _clk_ssi_ext2_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; reg = __raw_readl(MXC_CCM_CSCMR1); if (parent == &ssi2_clk[0]) { reg |= MXC_CCM_CSCMR1_SSI_EXT2_COM_CLK_SEL; } else { reg &= ~MXC_CCM_CSCMR1_SSI_EXT2_COM_CLK_SEL; mux = _get_mux(parent, &pll1_sw_clk, &pll2_sw_clk, &pll3_sw_clk, &ssi_lp_apm_clk); reg = (reg & ~MXC_CCM_CSCMR1_SSI_EXT2_CLK_SEL_MASK) | (mux << MXC_CCM_CSCMR1_SSI_EXT2_CLK_SEL_OFFSET); } __raw_writel(reg, MXC_CCM_CSCMR1); return 0; } static struct clk ssi_ext2_clk = { .name = "ssi_ext2_clk", .parent = &pll3_sw_clk, .set_parent = _clk_ssi_ext2_set_parent, .recalc = _clk_ssi_ext2_recalc, .enable_reg = MXC_CCM_CCGR3, .enable_shift = MXC_CCM_CCGR3_CG15_OFFSET, .enable = _clk_enable, .disable = _clk_disable, }; static struct clk iim_clk = { .name = "iim_clk", .parent = &ipg_clk, .secondary = &aips_tz2_clk, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR0, .enable_shift = MXC_CCM_CCGR0_CG15_OFFSET, .disable = _clk_disable, }; static struct clk tmax1_clk = { .name = "tmax1_clk", .id = 0, .parent = &ahb_clk, .secondary = &ahb_max_clk, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR1, .enable_shift = MXC_CCM_CCGR1_CG0_OFFSET, .disable = _clk_disable, }; static struct clk tmax2_clk = { .name = "tmax2_clk", .id = 0, .parent = &ahb_clk, .secondary = &ahb_max_clk, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR1, .enable_shift = MXC_CCM_CCGR1_CG1_OFFSET, .disable = _clk_disable, }; static struct clk tmax3_clk = { .name = "tmax3_clk", .id = 0, .parent = &ahb_clk, .secondary = &ahb_max_clk, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR1, .enable_shift = MXC_CCM_CCGR1_CG2_OFFSET, .disable = _clk_disable, }; static void _clk_usboh3_recalc(struct clk *clk) { u32 reg, prediv, podf; reg = __raw_readl(MXC_CCM_CSCDR1); prediv = ((reg & MXC_CCM_CSCDR1_USBOH3_CLK_PRED_MASK) >> MXC_CCM_CSCDR1_USBOH3_CLK_PRED_OFFSET) + 1; if (prediv == 1) BUG(); podf = ((reg & MXC_CCM_CSCDR1_USBOH3_CLK_PODF_MASK) >> MXC_CCM_CSCDR1_USBOH3_CLK_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / (prediv * podf); } static int _clk_usboh3_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; mux = _get_mux(parent, &pll1_sw_clk, &pll2_sw_clk, &pll3_sw_clk, &lp_apm_clk); reg = __raw_readl(MXC_CCM_CSCMR1) & ~MXC_CCM_CSCMR1_USBOH3_CLK_SEL_MASK; reg |= mux << MXC_CCM_CSCMR1_USBOH3_CLK_SEL_OFFSET; __raw_writel(reg, MXC_CCM_CSCMR1); return 0; } static struct clk usboh3_clk[] = { { .name = "usboh3_clk", .parent = &pll3_sw_clk, .set_parent = _clk_usboh3_set_parent, .recalc = _clk_usboh3_recalc, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR2, .enable_shift = MXC_CCM_CCGR2_CG14_OFFSET, .disable = _clk_disable, .secondary = &usboh3_clk[1], .flags = AHB_MED_SET_POINT | CPU_FREQ_TRIG_UPDATE, }, { .name = "usb_sec_clk", .parent = &tmax2_clk, .secondary = &emi_fast_clk, }, }; static struct clk usb_ahb_clk = { .name = "usb_ahb_clk", .parent = &ipg_clk, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR2, .enable_shift = MXC_CCM_CCGR2_CG13_OFFSET, .disable = _clk_disable, }; static void _clk_usb_phy_recalc(struct clk *clk) { u32 reg, prediv, podf; if (clk->parent == &pll3_sw_clk) { reg = __raw_readl(MXC_CCM_CDCDR); prediv = ((reg & MXC_CCM_CDCDR_USB_PHY_PRED_MASK) >> MXC_CCM_CDCDR_USB_PHY_PRED_OFFSET) + 1; podf = ((reg & MXC_CCM_CDCDR_USB_PHY_PODF_MASK) >> MXC_CCM_CDCDR_USB_PHY_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / (prediv * podf); } else clk->rate = clk->parent->rate; } static int _clk_usb_phy_set_parent(struct clk *clk, struct clk *parent) { u32 reg; reg = __raw_readl(MXC_CCM_CSCMR1); if (parent == &osc_clk) reg &= ~MXC_CCM_CSCMR1_USB_PHY_CLK_SEL; else if (parent == &pll3_sw_clk) reg |= MXC_CCM_CSCMR1_USB_PHY_CLK_SEL; else BUG(); __raw_writel(reg, MXC_CCM_CSCMR1); return 0; } static struct clk usb_phy_clk = { .name = "usb_phy_clk", .parent = &pll3_sw_clk, .secondary = &tmax3_clk, .set_parent = _clk_usb_phy_set_parent, .recalc = _clk_usb_phy_recalc, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR2, .enable_shift = MXC_CCM_CCGR2_CG0_OFFSET, .disable = _clk_disable, }; static struct clk esdhc_dep_clks = { .name = "sd_dep_clk", .parent = &spba_clk, .secondary = &emi_fast_clk, }; static void _clk_esdhc1_recalc(struct clk *clk) { u32 reg, prediv, podf; reg = __raw_readl(MXC_CCM_CSCDR1); prediv = ((reg & MXC_CCM_CSCDR1_ESDHC1_MSHC1_CLK_PRED_MASK) >> MXC_CCM_CSCDR1_ESDHC1_MSHC1_CLK_PRED_OFFSET) + 1; podf = ((reg & MXC_CCM_CSCDR1_ESDHC1_MSHC1_CLK_PODF_MASK) >> MXC_CCM_CSCDR1_ESDHC1_MSHC1_CLK_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / (prediv * podf); } static int _clk_esdhc1_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; mux = _get_mux(parent, &pll1_sw_clk, &pll2_sw_clk, &pll3_sw_clk, &lp_apm_clk); reg = __raw_readl(MXC_CCM_CSCMR1) & ~MXC_CCM_CSCMR1_ESDHC1_MSHC1_CLK_SEL_MASK; reg |= mux << MXC_CCM_CSCMR1_ESDHC1_MSHC1_CLK_SEL_OFFSET; __raw_writel(reg, MXC_CCM_CSCMR1); return 0; } static struct clk esdhc1_clk[] = { { .name = "esdhc_clk", .id = 0, .parent = &pll3_sw_clk, .set_parent = _clk_esdhc1_set_parent, .recalc = _clk_esdhc1_recalc, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR3, .enable_shift = MXC_CCM_CCGR3_CG1_OFFSET, .disable = _clk_disable, .secondary = &esdhc1_clk[1], .flags = AHB_HIGH_SET_POINT | CPU_FREQ_TRIG_UPDATE, }, { .name = "esdhc_ipg_clk", .id = 0, .parent = &ipg_clk, .secondary = &esdhc1_clk[2], .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR3, .enable_shift = MXC_CCM_CCGR3_CG0_OFFSET, .disable = _clk_disable, }, { .name = "esdhc_sec_clk", .id = 0, .parent = &tmax3_clk, .secondary = &esdhc_dep_clks, }, }; static void _clk_esdhc2_recalc(struct clk *clk) { u32 reg, prediv, podf; reg = __raw_readl(MXC_CCM_CSCDR1); prediv = ((reg & MXC_CCM_CSCDR1_ESDHC2_MSHC2_CLK_PRED_MASK) >> MXC_CCM_CSCDR1_ESDHC2_MSHC2_CLK_PRED_OFFSET) + 1; podf = ((reg & MXC_CCM_CSCDR1_ESDHC2_MSHC2_CLK_PODF_MASK) >> MXC_CCM_CSCDR1_ESDHC2_MSHC2_CLK_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / (prediv * podf); } static int _clk_esdhc2_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; mux = _get_mux(parent, &pll1_sw_clk, &pll2_sw_clk, &pll3_sw_clk, &lp_apm_clk); reg = __raw_readl(MXC_CCM_CSCMR1) & ~MXC_CCM_CSCMR1_ESDHC2_MSHC2_CLK_SEL_MASK; reg |= mux << MXC_CCM_CSCMR1_ESDHC2_MSHC2_CLK_SEL_OFFSET; __raw_writel(reg, MXC_CCM_CSCMR1); return 0; } static struct clk esdhc2_clk[] = { { .name = "esdhc_clk", .id = 1, .parent = &pll3_sw_clk, .set_parent = _clk_esdhc2_set_parent, .recalc = _clk_esdhc2_recalc, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR3, .enable_shift = MXC_CCM_CCGR3_CG3_OFFSET, .disable = _clk_disable, .secondary = &esdhc2_clk[1], .flags = AHB_HIGH_SET_POINT | CPU_FREQ_TRIG_UPDATE, }, { .name = "esdhc_ipg_clk", .id = 1, .parent = &ipg_clk, .secondary = &esdhc2_clk[2], .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR3, .enable_shift = MXC_CCM_CCGR3_CG2_OFFSET, .disable = _clk_disable, }, { .name = "esdhc_sec_clk", .id = 0, .parent = &tmax2_clk, .secondary = &esdhc_dep_clks, }, }; static int _clk_esdhc3_set_parent(struct clk *clk, struct clk *parent) { u32 reg; reg = __raw_readl(MXC_CCM_CSCMR1); if (parent == &esdhc1_clk[0]) reg &= ~MXC_CCM_CSCMR1_ESDHC3_CLK_SEL; else if (parent == &esdhc2_clk[0]) reg |= MXC_CCM_CSCMR1_ESDHC3_CLK_SEL; else BUG(); __raw_writel(reg, MXC_CCM_CSCMR1); return 0; } static struct clk esdhc3_clk[] = { { .name = "esdhc_clk", .id = 2, .parent = &esdhc1_clk[0], .set_parent = _clk_esdhc3_set_parent, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR3, .enable_shift = MXC_CCM_CCGR3_CG5_OFFSET, .disable = _clk_disable, .secondary = &esdhc3_clk[1], .flags = AHB_HIGH_SET_POINT | CPU_FREQ_TRIG_UPDATE, }, { .name = "esdhc_ipg_clk", .id = 2, .parent = &ipg_clk, .secondary = &esdhc3_clk[2], .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR3, .enable_shift = MXC_CCM_CCGR3_CG4_OFFSET, .disable = _clk_disable, }, { .name = "esdhc_sec_clk", .id = 0, .parent = &ahb_max_clk, .secondary = &esdhc_dep_clks, }, }; static int _clk_esdhc4_set_parent(struct clk *clk, struct clk *parent) { u32 reg; reg = __raw_readl(MXC_CCM_CSCMR1); if (parent == &esdhc1_clk[0]) reg &= ~MXC_CCM_CSCMR1_ESDHC4_CLK_SEL; else if (parent == &esdhc2_clk[0]) reg |= MXC_CCM_CSCMR1_ESDHC4_CLK_SEL; else BUG(); __raw_writel(reg, MXC_CCM_CSCMR1); return 0; } static struct clk esdhc4_clk[] = { { .name = "esdhc_clk", .id = 3, .parent = &esdhc1_clk[0], .set_parent = _clk_esdhc4_set_parent, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR3, .enable_shift = MXC_CCM_CCGR3_CG7_OFFSET, .disable = _clk_disable, .secondary = &esdhc3_clk[1], .flags = AHB_HIGH_SET_POINT | CPU_FREQ_TRIG_UPDATE, }, { .name = "esdhc_ipg_clk", .id = 3, .parent = &ipg_clk, .secondary = &esdhc3_clk[2], .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR3, .enable_shift = MXC_CCM_CCGR3_CG6_OFFSET, .disable = _clk_disable, }, { .name = "esdhc_sec_clk", .id = 0, .parent = &tmax3_clk, .secondary = &esdhc_dep_clks, }, }; static int _clk_sim_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; mux = _get_mux(parent, &pll1_sw_clk, &pll2_sw_clk, &pll3_sw_clk, NULL); reg = __raw_readl(MXC_CCM_CSCMR2) & ~MXC_CCM_CSCMR2_SIM_CLK_SEL_MASK; reg |= mux << MXC_CCM_CSCMR2_SIM_CLK_SEL_OFFSET; __raw_writel(reg, MXC_CCM_CSCMR2); return 0; } static void _clk_sim_recalc(struct clk *clk) { u32 reg, pred, podf; reg = __raw_readl(MXC_CCM_CSCDR2); pred = ((reg & MXC_CCM_CSCDR2_SIM_CLK_PRED_MASK) >> MXC_CCM_CSCDR2_SIM_CLK_PRED_OFFSET) + 1; podf = ((reg & MXC_CCM_CSCDR2_SIM_CLK_PODF_MASK) >> MXC_CCM_CSCDR2_SIM_CLK_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / (pred * podf); } static unsigned long _clk_sim_round_rate(struct clk *clk, unsigned long rate) { u32 pre, post; u32 div = clk->parent->rate / rate; if (clk->parent->rate % rate) div++; __calc_pre_post_dividers(div, &pre, &post); return clk->parent->rate / (pre * post); } static int _clk_sim_set_rate(struct clk *clk, unsigned long rate) { u32 reg; u32 div; u32 pre, post; div = clk->parent->rate / rate; if ((clk->parent->rate / div) != rate) return -EINVAL; __calc_pre_post_dividers(div, &pre, &post); /* Set SIM clock divider */ reg = __raw_readl(MXC_CCM_CSCDR2) & ~(MXC_CCM_CSCDR2_SIM_CLK_PRED_MASK | MXC_CCM_CSCDR2_SIM_CLK_PODF_MASK); reg |= (post - 1) << MXC_CCM_CSCDR2_SIM_CLK_PODF_OFFSET; reg |= (pre - 1) << MXC_CCM_CSCDR2_SIM_CLK_PRED_OFFSET; __raw_writel(reg, MXC_CCM_CSCDR2); clk->rate = rate; return 0; } static struct clk sim_clk[] = { { .name = "sim_clk", .parent = &pll3_sw_clk, .set_parent = _clk_sim_set_parent, .secondary = &sim_clk[1], .recalc = _clk_sim_recalc, .round_rate = _clk_sim_round_rate, .set_rate = _clk_sim_set_rate, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR4, .enable_shift = MXC_CCM_CCGR4_CG2_OFFSET, .disable = _clk_disable, .flags = AHB_HIGH_SET_POINT | CPU_FREQ_TRIG_UPDATE, }, { .name = "sim_ipg_clk", .parent = &ipg_clk, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR4, .enable_shift = MXC_CCM_CCGR4_CG1_OFFSET, .disable = _clk_disable, }, }; static void _clk_nfc_recalc(struct clk *clk) { u32 reg, div; reg = __raw_readl(MXC_CCM_CBCDR); div = ((reg & MXC_CCM_CBCDR_NFC_PODF_MASK) >> MXC_CCM_CBCDR_NFC_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / div; } static unsigned long _clk_nfc_round_rate(struct clk *clk, unsigned long rate) { u32 div; /* * Compute the divider we'd have to use to reach the target rate. */ div = clk->parent->rate / rate; /* * If there's a remainder after the division, then we have to increment * the divider. There are two reasons for this: * * 1) The frequency we round to must be LESS THAN OR EQUAL to the * target. We aren't allowed to round to a frequency that is higher * than the target. * * 2) This also catches the case where target rate is less than the * parent rate, which implies a divider of zero. We can't allow a * divider of zero. */ if (clk->parent->rate % rate) div++; /* * The divider for this clock is 3 bits wide, so we can't possibly * divide the parent by more than eight. */ if (div > 8) return -EINVAL; return clk->parent->rate / div; } static int _clk_nfc_set_rate(struct clk *clk, unsigned long rate) { u32 reg, div; struct timespec nstimeofday; struct timespec curtime; div = clk->parent->rate / rate; if (div == 0) div++; if (((clk->parent->rate / div) != rate) || (div > 8)) return -EINVAL; if (emi_fast_clk.usecount == 0) emi_fast_clk.enable(&emi_fast_clk); if (emi_slow_clk.usecount == 0) emi_slow_clk.enable(&emi_slow_clk); reg = __raw_readl(MXC_CCM_CBCDR); reg &= ~MXC_CCM_CBCDR_NFC_PODF_MASK; reg |= (div - 1) << MXC_CCM_CBCDR_NFC_PODF_OFFSET; __raw_writel(reg, MXC_CCM_CBCDR); getnstimeofday(&nstimeofday); while (__raw_readl(MXC_CCM_CDHIPR) & MXC_CCM_CDHIPR_NFC_IPG_INT_MEM_PODF_BUSY){ getnstimeofday(&curtime); if ((curtime.tv_nsec - nstimeofday.tv_nsec) > SPIN_DELAY) panic("_clk_nfc_set_rate failed\n"); } clk->rate = rate; if (emi_fast_clk.usecount == 0) emi_fast_clk.disable(&emi_fast_clk); if (emi_slow_clk.usecount == 0) emi_slow_clk.disable(&emi_slow_clk); return 0; } static struct clk emi_enfc_clk = { .name = "nfc_clk", .parent = &emi_slow_clk, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR5, .enable_shift = MXC_CCM_CCGR5_CG10_OFFSET, .disable = _clk_disable_inwait, .recalc = _clk_nfc_recalc, .round_rate = _clk_nfc_round_rate, .set_rate = _clk_nfc_set_rate, }; static int _clk_spdif_xtal_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; mux = _get_mux(parent, &osc_clk, &ckih_clk, &ckih2_clk, NULL); reg = __raw_readl(MXC_CCM_CSCMR1) & ~MXC_CCM_CSCMR1_SPDIF_CLK_SEL_MASK; reg |= mux << MXC_CCM_CSCMR1_SPDIF_CLK_SEL_OFFSET; __raw_writel(reg, MXC_CCM_CSCMR1); return 0; } static struct clk spdif_xtal_clk = { .name = "spdif_xtal_clk", .parent = &osc_clk, .set_parent = _clk_spdif_xtal_set_parent, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR5, .enable_shift = MXC_CCM_CCGR5_CG15_OFFSET, .disable = _clk_disable, }; static int _clk_spdif0_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; reg = __raw_readl(MXC_CCM_CSCMR2); reg |= MXC_CCM_CSCMR2_SPDIF0_COM; if (parent != &ssi1_clk[0]) { reg &= ~MXC_CCM_CSCMR2_SPDIF0_COM; mux = _get_mux(parent, &pll1_sw_clk, &pll2_sw_clk, &pll3_sw_clk, &spdif_xtal_clk); reg = (reg & ~MXC_CCM_CSCMR2_SPDIF0_CLK_SEL_MASK) | (mux << MXC_CCM_CSCMR2_SPDIF0_CLK_SEL_OFFSET); } __raw_writel(reg, MXC_CCM_CSCMR2); return 0; } static void _clk_spdif0_recalc(struct clk *clk) { u32 reg, pred, podf; if (clk->parent == &ssi1_clk[0]) { clk->rate = clk->parent->rate; } else { reg = __raw_readl(MXC_CCM_CDCDR); pred = ((reg & MXC_CCM_CDCDR_SPDIF0_CLK_PRED_MASK) >> MXC_CCM_CDCDR_SPDIF0_CLK_PRED_OFFSET) + 1; podf = ((reg & MXC_CCM_CDCDR_SPDIF0_CLK_PODF_MASK) >> MXC_CCM_CDCDR_SPDIF0_CLK_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / (pred * podf); } } static struct clk spdif0_clk[] = { { .name = "spdif_clk", .id = 0, .parent = &pll3_sw_clk, .set_parent = _clk_spdif0_set_parent, .recalc = _clk_spdif0_recalc, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR5, .enable_shift = MXC_CCM_CCGR5_CG13_OFFSET, .disable = _clk_disable, .flags = AHB_HIGH_SET_POINT | CPU_FREQ_TRIG_UPDATE, }, { .name = "spdif_ipg_clk", .id = 0, .parent = &ipg_clk, .secondary = &spba_clk, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR5, .enable_shift = MXC_CCM_CCGR5_CG15_OFFSET, .disable = _clk_disable, }, }; static int _clk_spdif1_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; reg = __raw_readl(MXC_CCM_CSCMR2); reg |= MXC_CCM_CSCMR2_SPDIF1_COM; if (parent != &ssi2_clk[0]) { reg &= ~MXC_CCM_CSCMR2_SPDIF1_COM; mux = _get_mux(parent, &pll1_sw_clk, &pll2_sw_clk, &pll3_sw_clk, &spdif_xtal_clk); reg = (reg & ~MXC_CCM_CSCMR2_SPDIF1_CLK_SEL_MASK) | (mux << MXC_CCM_CSCMR2_SPDIF1_CLK_SEL_OFFSET); } __raw_writel(reg, MXC_CCM_CSCMR2); return 0; } static void _clk_spdif1_recalc(struct clk *clk) { u32 reg, pred, podf; if (clk->parent == &ssi2_clk[0]) { clk->rate = clk->parent->rate; } else { reg = __raw_readl(MXC_CCM_CDCDR); pred = ((reg & MXC_CCM_CDCDR_SPDIF1_CLK_PRED_MASK) >> MXC_CCM_CDCDR_SPDIF1_CLK_PRED_OFFSET) + 1; podf = ((reg & MXC_CCM_CDCDR_SPDIF1_CLK_PODF_MASK) >> MXC_CCM_CDCDR_SPDIF1_CLK_PODF_OFFSET) + 1; clk->rate = clk->parent->rate / (pred * podf); } } static struct clk spdif1_clk[] = { { .name = "spdif_clk", .id = 1, .parent = &pll3_sw_clk, .set_parent = _clk_spdif1_set_parent, .recalc = _clk_spdif1_recalc, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR5, .enable_shift = MXC_CCM_CCGR5_CG14_OFFSET, .disable = _clk_disable, .flags = AHB_HIGH_SET_POINT | CPU_FREQ_TRIG_UPDATE, }, { .name = "spdif_ipg_clk", .id = 0, .parent = &ipg_clk, .secondary = &spba_clk, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR5, .enable_shift = MXC_CCM_CCGR5_CG15_OFFSET, .disable = _clk_disable, }, }; static int _clk_ddr_set_parent(struct clk *clk, struct clk *parent) { u32 reg, reg2, mux; struct timespec nstimeofday; struct timespec curtime; reg = __raw_readl(MXC_CCM_CBCMR); reg2 = __raw_readl(MXC_CCM_CBCDR); mux = _get_mux_ddr(parent, &axi_a_clk, &axi_b_clk, &emi_slow_clk, &ahb_clk, &ddr_hf_clk); if (mux < 4) { reg = (reg & ~MXC_CCM_CBCMR_DDR_CLK_SEL_MASK) | (mux << MXC_CCM_CBCMR_DDR_CLK_SEL_OFFSET); __raw_writel(reg, MXC_CCM_CBCMR); reg2 = (reg2 & ~MXC_CCM_CBCDR_DDR_HF_SEL); } else { reg2 = (reg2 & ~MXC_CCM_CBCDR_DDR_HF_SEL) | (MXC_CCM_CBCDR_DDR_HF_SEL); } __raw_writel(reg2, MXC_CCM_CBCDR); getnstimeofday(&nstimeofday); while (__raw_readl(MXC_CCM_CDHIPR) & MXC_CCM_CDHIPR_DDR_HF_CLK_SEL_BUSY){ getnstimeofday(&curtime); if ((curtime.tv_nsec - nstimeofday.tv_nsec) > SPIN_DELAY) panic("_clk_ddr_set_parent failed\n"); } return 0; } static struct clk ddr_clk = { .name = "ddr_clk", .parent = &ddr_hf_clk, .set_parent = _clk_ddr_set_parent, .flags = RATE_PROPAGATES, }; static int _clk_arm_axi_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; reg = __raw_readl(MXC_CCM_CBCMR); mux = _get_mux(parent, &axi_a_clk, &axi_b_clk, &emi_slow_clk, &ahb_clk); reg = (reg & ~MXC_CCM_CBCMR_ARM_AXI_CLK_SEL_MASK) | (mux << MXC_CCM_CBCMR_ARM_AXI_CLK_SEL_OFFSET); __raw_writel(reg, MXC_CCM_CBCMR); return 0; } static struct clk arm_axi_clk = { .name = "arm_axi_clk", .parent = &axi_a_clk, .set_parent = _clk_arm_axi_set_parent, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR0, .enable_shift = MXC_CCM_CCGR0_CG1_OFFSET, .disable = _clk_disable, }; static int _clk_vpu_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; reg = __raw_readl(MXC_CCM_CBCMR); mux = _get_mux(parent, &axi_a_clk, &axi_b_clk, &emi_slow_clk, &ahb_clk); reg = (reg & ~MXC_CCM_CBCMR_VPU_AXI_CLK_SEL_MASK) | (mux << MXC_CCM_CBCMR_VPU_AXI_CLK_SEL_OFFSET); __raw_writel(reg, MXC_CCM_CBCMR); return 0; } static int _clk_vpu_enable(struct clk *clk) { /* Set VPU's parent to be axi_a or ahb when its enabled. */ if (cpu_is_mx51_rev(CHIP_REV_2_0) < 0) { clk_set_parent(&vpu_clk[0], &ahb_clk); clk_set_parent(&vpu_clk[1], &ahb_clk); } else { clk_set_parent(&vpu_clk[0], &axi_a_clk); clk_set_parent(&vpu_clk[1], &axi_a_clk); } _clk_enable(clk); return 0; } static void _clk_vpu_disable(struct clk *clk) { _clk_disable(clk); /* Set VPU's parent to be axi_b when its disabled. */ clk_set_parent(&vpu_clk[0], &axi_b_clk); clk_set_parent(&vpu_clk[1], &axi_b_clk); } static struct clk vpu_clk[] = { { .name = "vpu_clk", .set_parent = _clk_vpu_set_parent, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR5, .enable_shift = MXC_CCM_CCGR5_CG4_OFFSET, .disable = _clk_disable, .secondary = &vpu_clk[1], .flags = AHB_HIGH_SET_POINT | CPU_FREQ_TRIG_UPDATE, }, { .name = "vpu_core_clk", .set_parent = _clk_vpu_set_parent, .enable = _clk_vpu_enable, .enable_reg = MXC_CCM_CCGR5, .enable_shift = MXC_CCM_CCGR5_CG3_OFFSET, .disable = _clk_vpu_disable, .secondary = &vpu_clk[2], }, { .name = "vpu_emi_clk", .parent = &emi_fast_clk, #ifdef CONFIG_MXC_VPU_IRAM .secondary = &emi_intr_clk, #endif } }; static int _clk_lpsr_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; reg = __raw_readl(MXC_CCM_CLPCR); mux = _get_mux(parent, &ckil_clk, &fpm_clk, &fpm_div2_clk, NULL); reg = (reg & ~MXC_CCM_CLPCR_LPSR_CLK_SEL_MASK) | (mux << MXC_CCM_CLPCR_LPSR_CLK_SEL_OFFSET); __raw_writel(reg, MXC_CCM_CLPCR); return 0; } static struct clk lpsr_clk = { .name = "lpsr_clk", .parent = &ckil_clk, .set_parent = _clk_lpsr_set_parent, }; static void _clk_pgc_recalc(struct clk *clk) { u32 reg, div; reg = __raw_readl(MXC_CCM_CSCDR1); div = (reg & MXC_CCM_CSCDR1_PGC_CLK_PODF_MASK) >> MXC_CCM_CSCDR1_PGC_CLK_PODF_OFFSET; div = 1 >> div; clk->rate = clk->parent->rate / div; } static struct clk pgc_clk = { .name = "pgc_clk", .parent = &ipg_clk, .recalc = _clk_pgc_recalc, }; /*usb OTG clock */ static struct clk usb_clk = { .name = "usb_clk", .rate = 60000000, }; static struct clk usb_utmi_clk = { .name = "usb_utmi_clk", .enable = _clk_enable, .enable_reg = MXC_CCM_CSCMR1, .enable_shift = MXC_CCM_CSCMR1_USB_PHY_CLK_SEL_OFFSET, .disable = _clk_disable, }; static struct clk rtc_clk = { .name = "rtc_clk", .parent = &ckil_clk, .secondary = &ipg_clk, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR4, .enable_shift = MXC_CCM_CCGR4_CG14_OFFSET, .disable = _clk_disable, }; static struct clk ata_clk = { .name = "ata_clk", .parent = &ipg_clk, .secondary = &spba_clk, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR4, .enable_shift = MXC_CCM_CCGR4_CG0_OFFSET, .disable = _clk_disable, .flags = AHB_HIGH_SET_POINT | CPU_FREQ_TRIG_UPDATE, }; static struct clk owire_clk = { .name = "owire_clk", .parent = &ipg_perclk, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR2, .enable_shift = MXC_CCM_CCGR2_CG11_OFFSET, .disable = _clk_disable, }; static struct clk fec_clk[] = { { .name = "fec_clk", .parent = &ipg_clk, .secondary = &fec_clk[1], .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR2, .enable_shift = MXC_CCM_CCGR2_CG12_OFFSET, .disable = _clk_disable, .flags = AHB_HIGH_SET_POINT | CPU_FREQ_TRIG_UPDATE, }, { .name = "fec_sec1_clk", .parent = &tmax2_clk, .secondary = &fec_clk[2], }, { .name = "fec_sec2_clk", .parent = &aips_tz2_clk, .secondary = &emi_fast_clk, }, }; static struct clk sahara_clk[] = { { .name = "sahara_clk", .parent = &ahb_clk, .secondary = &sahara_clk[1], .enable_reg = MXC_CCM_CCGR4, .enable_shift = MXC_CCM_CCGR4_CG7_OFFSET, .enable = _clk_enable, .disable = _clk_disable, }, { .name = "sahara_sec_clk", .parent = &tmax1_clk, .secondary = &emi_fast_clk, } }; static struct clk scc_clk[] = { { .name = "scc_clk", .parent = &ahb_clk, .secondary = &scc_clk[1], .enable_reg = MXC_CCM_CCGR1, .enable_shift = MXC_CCM_CCGR1_CG15_OFFSET, .enable = _clk_enable, .disable = _clk_disable, }, { .name = "scc_sec_clk", .parent = &tmax1_clk, .secondary = &emi_fast_clk, } }; static int _clk_gpu3d_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; reg = __raw_readl(MXC_CCM_CBCMR); mux = _get_mux(parent, &axi_a_clk, &axi_b_clk, &emi_slow_clk, &ahb_clk); reg = (reg & ~MXC_CCM_CBCMR_GPU_CLK_SEL_MASK) | (mux << MXC_CCM_CBCMR_GPU_CLK_SEL_OFFSET); __raw_writel(reg, MXC_CCM_CBCMR); return 0; } static int _clk_gpu3d_enable(struct clk *clk) { /* Set gPU's parent to be axi_a or ahb when its enabled. */ clk_set_parent(&gpu3d_clk, &axi_a_clk); _clk_enable(clk); return 0; } static void _clk_gpu3d_disable(struct clk *clk) { _clk_disable(clk); /* Set GPU's parent to be axi_b when its disabled. */ clk_set_parent(&gpu3d_clk, &axi_b_clk); } static struct clk gpu3d_clk = { .name = "gpu3d_clk", .parent = &axi_a_clk, .set_parent = _clk_gpu3d_set_parent, .enable = _clk_gpu3d_enable, .enable_reg = MXC_CCM_CCGR5, .enable_shift = MXC_CCM_CCGR5_CG1_OFFSET, .disable = _clk_gpu3d_disable, .flags = AHB_HIGH_SET_POINT | CPU_FREQ_TRIG_UPDATE, }; static struct clk garb_clk = { .name = "garb_clk", .parent = &axi_a_clk, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR5, .enable_shift = MXC_CCM_CCGR5_CG2_OFFSET, .disable = _clk_disable, }; static struct clk emi_garb_clk = { .name = "emi_garb_clk", .parent = &axi_a_clk, .enable = _clk_enable, .enable_reg = MXC_CCM_CCGR6, .enable_shift = MXC_CCM_CCGR6_CG4_OFFSET, .disable = _clk_disable, }; static int _clk_gpu2d_set_parent(struct clk *clk, struct clk *parent) { u32 reg, mux; reg = __raw_readl(MXC_CCM_CBCMR); mux = _get_mux(parent, &axi_a_clk, &axi_b_clk, &emi_slow_clk, &ahb_clk); reg = (reg & ~MXC_CCM_CBCMR_GPU2D_CLK_SEL_MASK) | (mux << MXC_CCM_CBCMR_GPU2D_CLK_SEL_OFFSET); __raw_writel(reg, MXC_CCM_CBCMR); return 0; } static int _clk_gpu2d_enable(struct clk *clk) { /* Set GPU2D's parent to be axi_a or ahb when its enabled. */ clk_set_parent(&gpu2d_clk, &axi_a_clk); _clk_enable(clk); return 0; } static void _clk_gpu2d_disable(struct clk *clk) { _clk_disable(clk); /* Set GPU2d's parent to be axi_b when its disabled. */ clk_set_parent(&gpu2d_clk, &axi_b_clk); } static struct clk gpu2d_clk = { .name = "gpu2d_clk", .parent = &axi_a_clk, .set_parent = _clk_gpu2d_set_parent, .enable = _clk_gpu2d_enable, .enable_reg = MXC_CCM_CCGR6, .enable_shift = MXC_CCM_CCGR6_CG7_OFFSET, .disable = _clk_gpu2d_disable, .flags = AHB_HIGH_SET_POINT | CPU_FREQ_TRIG_UPDATE, }; static struct clk *mxc_clks[] = { &osc_clk, &ckih_clk, &ckih2_clk, &ckil_clk, &fpm_clk, &fpm_div2_clk, &pll1_main_clk, &pll1_sw_clk, &pll2_sw_clk, &pll3_sw_clk, &gpc_dvfs_clk, &lp_apm_clk, &cpu_clk, &periph_apm_clk, &main_bus_clk, &axi_a_clk, &axi_b_clk, &ahb_clk, &ahb_max_clk, &ipg_clk, &ipg_perclk, &ahbmux1_clk, &ahbmux2_clk, &aips_tz1_clk, &aips_tz2_clk, &sdma_clk[0], &sdma_clk[1], &ipu_clk[0], &ipu_clk[1], &ipu_di_clk[0], &ipu_di_clk[1], &tve_clk, &csi0_clk, &csi1_clk, &uart_main_clk, &uart1_clk[0], &uart1_clk[1], &uart2_clk[0], &uart2_clk[1], &uart3_clk[0], &uart3_clk[1], &spba_clk, &i2c_clk[0], &i2c_clk[1], &hsi2c_clk, &hsi2c_serial_clk, &gpt_clk[0], &gpt_clk[1], &gpt_clk[2], &pwm1_clk[0], &pwm1_clk[1], &pwm1_clk[2], &pwm2_clk[0], &pwm2_clk[1], &pwm2_clk[2], &cspi_main_clk, &cspi1_clk[0], &cspi1_clk[1], &cspi2_clk[0], &cspi2_clk[1], &cspi3_clk[0], &cspi3_clk[1], &ssi_lp_apm_clk, &ssi1_clk[0], &ssi1_clk[1], &ssi1_clk[2], &ssi2_clk[0], &ssi2_clk[1], &ssi2_clk[2], &ssi_ext1_clk, &ssi_ext2_clk, &iim_clk, &tmax1_clk, &tmax2_clk, &tmax3_clk, &usboh3_clk[0], &usboh3_clk[1], &usb_ahb_clk, &usb_phy_clk, &usb_utmi_clk, &usb_clk, &esdhc1_clk[0], &esdhc1_clk[1], &esdhc2_clk[0], &esdhc2_clk[1], &esdhc3_clk[0], &esdhc3_clk[1], &esdhc4_clk[0], &esdhc4_clk[1], &esdhc_dep_clks, &sim_clk[0], &sim_clk[1], &emi_slow_clk, &ddr_clk, &emi_enfc_clk, &emi_fast_clk, &emi_intr_clk, &spdif_xtal_clk, &spdif0_clk[0], &spdif0_clk[1], &spdif1_clk[0], &spdif1_clk[1], &arm_axi_clk, &vpu_clk[0], &vpu_clk[1], &vpu_clk[2], &lpsr_clk, &pgc_clk, &rtc_clk, &ata_clk, &owire_clk, &fec_clk[0], &fec_clk[1], &fec_clk[2], &mipi_hsc1_clk, &mipi_hsc2_clk, &mipi_esc_clk, &mipi_hsp_clk, &sahara_clk[0], &sahara_clk[1], &gpu3d_clk, &garb_clk, &emi_garb_clk, &ddr_hf_clk, &gpu2d_clk, &scc_clk[0], }; static void clk_tree_init(void) { u32 reg, reg2, dp_ctl; ipg_perclk.set_parent(&ipg_perclk, &lp_apm_clk); /* *Initialise the IPG PER CLK dividers to 3. IPG_PER_CLK should be at * 8MHz, its derived from lp_apm. */ reg = __raw_readl(MXC_CCM_CBCDR); reg &= ~MXC_CCM_CBCDR_PERCLK_PRED1_MASK; reg &= ~MXC_CCM_CBCDR_PERCLK_PRED2_MASK; reg &= ~MXC_CCM_CBCDR_PERCLK_PODF_MASK; reg |= (2 << MXC_CCM_CBCDR_PERCLK_PRED1_OFFSET); __raw_writel(reg, MXC_CCM_CBCDR); /* set pll1_main_clk parent */ pll1_main_clk.parent = &osc_clk; dp_ctl = __raw_readl(pll_base[0] + MXC_PLL_DP_CTL); if ((dp_ctl & MXC_PLL_DP_CTL_REF_CLK_SEL_MASK) == 0) pll1_main_clk.parent = &fpm_clk; /* set pll2_sw_clk parent */ pll2_sw_clk.parent = &osc_clk; dp_ctl = __raw_readl(pll_base[1] + MXC_PLL_DP_CTL); if ((dp_ctl & MXC_PLL_DP_CTL_REF_CLK_SEL_MASK) == 0) pll2_sw_clk.parent = &fpm_clk; /* set pll3_clk parent */ pll3_sw_clk.parent = &osc_clk; dp_ctl = __raw_readl(pll_base[2] + MXC_PLL_DP_CTL); if ((dp_ctl & MXC_PLL_DP_CTL_REF_CLK_SEL_MASK) == 0) pll3_sw_clk.parent = &fpm_clk; /* set emi_slow_clk parent */ emi_slow_clk.parent = &main_bus_clk; reg = __raw_readl(MXC_CCM_CBCDR); if ((reg & MXC_CCM_CBCDR_EMI_CLK_SEL) != 0) emi_slow_clk.parent = &ahb_clk; /* set ipg_perclk parent */ ipg_perclk.parent = &lp_apm_clk; reg = __raw_readl(MXC_CCM_CBCMR); if ((reg & MXC_CCM_CBCMR_PERCLK_IPG_CLK_SEL) != 0) { ipg_perclk.parent = &ipg_clk; } else { if ((reg & MXC_CCM_CBCMR_PERCLK_LP_APM_CLK_SEL) == 0) ipg_perclk.parent = &main_bus_clk; } /* set DDR clock parent */ reg = __raw_readl(MXC_CCM_CBCMR) & MXC_CCM_CBCMR_DDR_CLK_SEL_MASK; reg >>= MXC_CCM_CBCMR_DDR_CLK_SEL_OFFSET; reg2 = __raw_readl(MXC_CCM_CBCDR) & MXC_CCM_CBCDR_DDR_HF_SEL; reg2 >>= MXC_CCM_CBCDR_DDR_HF_SEL_OFFSET; if (reg2) { ddr_clk.parent = &ddr_hf_clk; } else { if (reg == 0) { ddr_clk.parent = &axi_a_clk; } else if (reg == 1) { ddr_clk.parent = &axi_b_clk; } else if (reg == 2) { ddr_clk.parent = &emi_slow_clk; } else { ddr_clk.parent = &ahb_clk; } } } int __init mxc_clocks_init(unsigned long ckil, unsigned long osc, unsigned long ckih1, unsigned long ckih2) { struct clk **clkp; int i = 0, j = 0, reg; int wp_cnt = 0; /* Turn off all possible clocks */ if (mxc_jtag_enabled) { __raw_writel(1 << MXC_CCM_CCGR0_CG0_OFFSET | 1 << MXC_CCM_CCGR0_CG1_OFFSET | 1 << MXC_CCM_CCGR0_CG2_OFFSET | 1 << MXC_CCM_CCGR0_CG3_OFFSET | 3 << MXC_CCM_CCGR0_CG4_OFFSET | 1 << MXC_CCM_CCGR0_CG8_OFFSET | 1 << MXC_CCM_CCGR0_CG9_OFFSET | 1 << MXC_CCM_CCGR0_CG12_OFFSET | 1 << MXC_CCM_CCGR0_CG13_OFFSET | 1 << MXC_CCM_CCGR0_CG14_OFFSET, MXC_CCM_CCGR0); } else { __raw_writel(1 << MXC_CCM_CCGR0_CG0_OFFSET | 1 << MXC_CCM_CCGR0_CG1_OFFSET | 1 << MXC_CCM_CCGR0_CG2_OFFSET | 1 << MXC_CCM_CCGR0_CG3_OFFSET | 1 << MXC_CCM_CCGR0_CG8_OFFSET | 1 << MXC_CCM_CCGR0_CG9_OFFSET | 1 << MXC_CCM_CCGR0_CG12_OFFSET | 1 << MXC_CCM_CCGR0_CG13_OFFSET | 1 << MXC_CCM_CCGR0_CG14_OFFSET, MXC_CCM_CCGR0); } __raw_writel(0, MXC_CCM_CCGR1); __raw_writel(0, MXC_CCM_CCGR2); __raw_writel(0, MXC_CCM_CCGR3); __raw_writel(1 << MXC_CCM_CCGR4_CG8_OFFSET, MXC_CCM_CCGR4); __raw_writel(1 << MXC_CCM_CCGR5_CG2_OFFSET | 3 << MXC_CCM_CCGR5_CG6_OFFSET | 3 << MXC_CCM_CCGR5_CG7_OFFSET | 1 << MXC_CCM_CCGR5_CG8_OFFSET | 3 << MXC_CCM_CCGR5_CG9_OFFSET | 1 << MXC_CCM_CCGR5_CG10_OFFSET | 3 << MXC_CCM_CCGR5_CG11_OFFSET, MXC_CCM_CCGR5); __raw_writel(1 << MXC_CCM_CCGR6_CG4_OFFSET, MXC_CCM_CCGR6); ckil_clk.rate = ckil; osc_clk.rate = osc; ckih_clk.rate = ckih1; ckih2_clk.rate = ckih2; clk_tree_init(); for (clkp = mxc_clks; clkp < mxc_clks + ARRAY_SIZE(mxc_clks); clkp++) clk_register(*clkp); /*Setup the LPM bypass bits */ reg = __raw_readl(MXC_CCM_CLPCR); reg |= MXC_CCM_CLPCR_BYPASS_HSC_LPM_HS | MXC_CCM_CLPCR_BYPASS_IPU_LPM_HS | MXC_CCM_CLPCR_BYPASS_RTIC_LPM_HS | MXC_CCM_CLPCR_BYPASS_SCC_LPM_HS | MXC_CCM_CLPCR_BYPASS_SDMA_LPM_HS; __raw_writel(reg, MXC_CCM_CLPCR); /* Disable the handshake with HSC block as its not * initialised right now. */ reg = __raw_readl(MXC_CCM_CCDR); reg |= MXC_CCM_CCDR_HSC_HS_MASK; __raw_writel(reg, MXC_CCM_CCDR); /* This will propagate to all children and init all the clock rates */ propagate_rate(&osc_clk); propagate_rate(&ckih_clk); propagate_rate(&ckih2_clk); propagate_rate(&ckil_clk); propagate_rate(&pll1_sw_clk); propagate_rate(&pll2_sw_clk); clk_enable(&cpu_clk); clk_enable(&main_bus_clk); reg = __raw_readl(MXC_CCM_CBCDR) & MXC_CCM_CBCDR_DDR_HF_SEL; reg >>= MXC_CCM_CBCDR_DDR_HF_SEL_OFFSET; if (reg) clk_set_parent(&ddr_clk, &ddr_hf_clk); else clk_set_parent(&ddr_clk, &axi_a_clk); /* Initialise the parents to be axi_b, parents are set to * axi_a when the clocks are enabled. */ clk_set_parent(&vpu_clk[0], &axi_b_clk); clk_set_parent(&vpu_clk[1], &axi_b_clk); clk_set_parent(&gpu3d_clk, &axi_b_clk); clk_set_parent(&gpu2d_clk, &axi_b_clk); /* move cspi to 24MHz */ clk_set_parent(&cspi_main_clk, &lp_apm_clk); clk_set_rate(&cspi_main_clk, 12000000); /*move the spdif0 to spdif_xtal_ckl */ clk_set_parent(&spdif0_clk[0], &spdif_xtal_clk); /*set the SPDIF dividers to 1 */ reg = __raw_readl(MXC_CCM_CDCDR); reg &= ~MXC_CCM_CDCDR_SPDIF0_CLK_PODF_MASK; reg &= ~MXC_CCM_CDCDR_SPDIF0_CLK_PRED_MASK; __raw_writel(reg, MXC_CCM_CDCDR); /* move the spdif1 to 24MHz */ clk_set_parent(&spdif1_clk[0], &spdif_xtal_clk); /* set the spdif1 dividers to 1 */ reg = __raw_readl(MXC_CCM_CDCDR); reg &= ~MXC_CCM_CDCDR_SPDIF1_CLK_PODF_MASK; reg &= ~MXC_CCM_CDCDR_SPDIF1_CLK_PRED_MASK; __raw_writel(reg, MXC_CCM_CDCDR); /* Move SSI clocks to SSI_LP_APM clock */ clk_set_parent(&ssi_lp_apm_clk, &lp_apm_clk); clk_set_parent(&ssi1_clk[0], &ssi_lp_apm_clk); /* set the SSI dividers to divide by 2 */ reg = __raw_readl(MXC_CCM_CS1CDR); reg &= ~MXC_CCM_CS1CDR_SSI1_CLK_PODF_MASK; reg &= ~MXC_CCM_CS1CDR_SSI1_CLK_PRED_MASK; reg |= 1 << MXC_CCM_CS1CDR_SSI1_CLK_PRED_OFFSET; __raw_writel(reg, MXC_CCM_CS1CDR); clk_set_parent(&ssi2_clk[0], &ssi_lp_apm_clk); reg = __raw_readl(MXC_CCM_CS2CDR); reg &= ~MXC_CCM_CS2CDR_SSI2_CLK_PODF_MASK; reg &= ~MXC_CCM_CS2CDR_SSI2_CLK_PRED_MASK; reg |= 1 << MXC_CCM_CS2CDR_SSI2_CLK_PRED_OFFSET; __raw_writel(reg, MXC_CCM_CS2CDR); /* Change the SSI_EXT1_CLK to be sourced from SSI1_CLK_ROOT */ clk_set_parent(&ssi_ext1_clk, &ssi1_clk[0]); clk_set_parent(&ssi_ext2_clk, &ssi2_clk[0]); /* move usb_phy_clk to 24MHz */ clk_set_parent(&usb_phy_clk, &osc_clk); /* set usboh3_clk to pll2 */ clk_set_parent(&usboh3_clk[0], &pll2_sw_clk); reg = __raw_readl(MXC_CCM_CSCDR1); reg &= ~MXC_CCM_CSCDR1_USBOH3_CLK_PODF_MASK; reg &= ~MXC_CCM_CSCDR1_USBOH3_CLK_PRED_MASK; reg |= 4 << MXC_CCM_CSCDR1_USBOH3_CLK_PRED_OFFSET; reg |= 1 << MXC_CCM_CSCDR1_USBOH3_CLK_PODF_OFFSET; __raw_writel(reg, MXC_CCM_CSCDR1); /* Set the current working point. */ cpu_wp_tbl = get_cpu_wp(&cpu_wp_nr); /* Update the cpu working point table based on the PLL1 freq * at boot time */ if (pll1_main_clk.rate <= cpu_wp_tbl[cpu_wp_nr - 1].cpu_rate) wp_cnt = 1; else if (pll1_main_clk.rate <= cpu_wp_tbl[1].cpu_rate && pll1_main_clk.rate > cpu_wp_tbl[2].cpu_rate) wp_cnt = cpu_wp_nr - 1; else wp_cnt = cpu_wp_nr; cpu_wp_tbl[0].cpu_rate = pll1_main_clk.rate; if (wp_cnt == 1) { cpu_wp_tbl[0] = cpu_wp_tbl[cpu_wp_nr - 1]; memset(&cpu_wp_tbl[cpu_wp_nr - 1], 0, sizeof(struct cpu_wp)); memset(&cpu_wp_tbl[cpu_wp_nr - 2], 0, sizeof(struct cpu_wp)); } else if (wp_cnt < cpu_wp_nr) { for (i = 0; i < wp_cnt; i++) cpu_wp_tbl[i] = cpu_wp_tbl[i+1]; memset(&cpu_wp_tbl[i], 0, sizeof(struct cpu_wp)); } if (wp_cnt < cpu_wp_nr) { set_num_cpu_wp(wp_cnt); cpu_wp_tbl = get_cpu_wp(&cpu_wp_nr); } for (j = 0; j < cpu_wp_nr; j++) { if ((ddr_clk.parent == &ddr_hf_clk)) { /* Change the CPU podf divider based on the boot up * pll1 rate. */ cpu_wp_tbl[j].cpu_podf = (pll1_main_clk.rate / cpu_wp_tbl[j].cpu_rate) - 1; if (pll1_main_clk.rate/(cpu_wp_tbl[j].cpu_podf + 1) > cpu_wp_tbl[j].cpu_rate) { cpu_wp_tbl[j].cpu_podf++; cpu_wp_tbl[j].cpu_rate = pll1_main_clk.rate/ (1000 * (cpu_wp_tbl[j].cpu_podf + 1)); cpu_wp_tbl[j].cpu_rate *= 1000; } if (pll1_main_clk.rate/(cpu_wp_tbl[j].cpu_podf + 1) < cpu_wp_tbl[j].cpu_rate) { cpu_wp_tbl[j].cpu_rate = pll1_main_clk.rate; } } cpu_wp_tbl[j].pll_rate = pll1_main_clk.rate; } /* Set the current working point. */ for (i = 0; i < cpu_wp_nr; i++) { if (clk_get_rate(&cpu_clk) == cpu_wp_tbl[i].cpu_rate) { cpu_curr_wp = i; break; } } if (i > cpu_wp_nr) BUG(); propagate_rate(&osc_clk); propagate_rate(&pll1_sw_clk); propagate_rate(&pll2_sw_clk); /*Allow for automatic gating of the EMI internal clock. * If this is done, emi_intr CCGR bits should be set to 11. */ reg = __raw_readl((IO_ADDRESS(M4IF_BASE_ADDR) + 0x8c)); reg &= ~0x1; __raw_writel(reg, (IO_ADDRESS(M4IF_BASE_ADDR) + 0x8c)); clk_set_parent(&arm_axi_clk, &axi_a_clk); clk_set_parent(&ipu_clk[0], &axi_b_clk); clk_set_parent(&uart_main_clk, &pll2_sw_clk); clk_set_parent(&emi_slow_clk, &ahb_clk); clk_set_rate(&emi_slow_clk, clk_round_rate(&emi_slow_clk, 130000000)); /* Change the NFC clock rate to be 1:4 ratio with emi clock. */ clk_set_rate(&emi_enfc_clk, clk_round_rate(&emi_enfc_clk, (clk_get_rate(&emi_slow_clk))/4)); return 0; } /*! * Setup cpu clock based on working point. * @param wp cpu freq working point * @return 0 on success or error code on failure. */ static int cpu_clk_set_wp(int wp) { struct cpu_wp *p; u32 reg; u32 stat; if (wp == cpu_curr_wp) return 0; p = &cpu_wp_tbl[wp]; /* * If DDR clock is sourced from PLL1, we cannot drop PLL1 freq. * Use the ARM_PODF to change the freq of the core, leave the PLL1 * freq unchanged. */ if (ddr_clk.parent == &ddr_hf_clk) { reg = __raw_readl(MXC_CCM_CACRR); reg &= ~MXC_CCM_CACRR_ARM_PODF_MASK; reg |= cpu_wp_tbl[wp].cpu_podf << MXC_CCM_CACRR_ARM_PODF_OFFSET; __raw_writel(reg, MXC_CCM_CACRR); cpu_curr_wp = wp; cpu_clk.rate = cpu_wp_tbl[wp].cpu_rate; } else { struct timespec nstimeofday; struct timespec curtime; /* Change the ARM clock to requested frequency */ /* First move the ARM clock to step clock which is running * at 24MHz. */ /* Change the source of pll1_sw_clk to be the step_clk */ reg = __raw_readl(MXC_CCM_CCSR); reg |= MXC_CCM_CCSR_PLL1_SW_CLK_SEL; __raw_writel(reg, MXC_CCM_CCSR); /* Stop the PLL */ reg = __raw_readl(MXC_DPLL1_BASE + MXC_PLL_DP_CTL); reg &= ~MXC_PLL_DP_CTL_UPEN; __raw_writel(reg, MXC_DPLL1_BASE + MXC_PLL_DP_CTL); /* PDF and MFI */ reg = p->pdf | p->mfi << MXC_PLL_DP_OP_MFI_OFFSET; __raw_writel(reg, MXC_DPLL1_BASE + MXC_PLL_DP_OP); /* MFD */ __raw_writel(p->mfd, MXC_DPLL1_BASE + MXC_PLL_DP_MFD); /* MFI */ __raw_writel(p->mfn, MXC_DPLL1_BASE + MXC_PLL_DP_MFN); reg = __raw_readl(MXC_DPLL1_BASE + MXC_PLL_DP_CTL); reg |= MXC_PLL_DP_CTL_UPEN; /* Set the UPEN bits */ __raw_writel(reg, MXC_DPLL1_BASE + MXC_PLL_DP_CTL); /* Forcefully restart the PLL */ reg |= MXC_PLL_DP_CTL_RST; __raw_writel(reg, MXC_DPLL1_BASE + MXC_PLL_DP_CTL); /* Wait for the PLL to lock */ getnstimeofday(&nstimeofday); do { getnstimeofday(&curtime); if ((curtime.tv_nsec - nstimeofday.tv_nsec) > SPIN_DELAY) panic("pll1 relock failed\n"); stat = __raw_readl(MXC_DPLL1_BASE + MXC_PLL_DP_CTL) & MXC_PLL_DP_CTL_LRF; } while (!stat); reg = __raw_readl(MXC_CCM_CCSR); /* Move the PLL1 back to the pll1_main_clk */ reg &= ~MXC_CCM_CCSR_PLL1_SW_CLK_SEL; __raw_writel(reg, MXC_CCM_CCSR); cpu_curr_wp = wp; pll1_sw_clk.rate = cpu_wp_tbl[wp].cpu_rate; pll1_main_clk.rate = pll1_sw_clk.rate; cpu_clk.rate = pll1_sw_clk.rate; } #if defined(CONFIG_CPU_FREQ) cpufreq_trig_needed = 1; #endif return 0; }