From c0abefd30b2c9db015df4914a95d268ecdb39b00 Mon Sep 17 00:00:00 2001 From: Dinh Nguyen Date: Mon, 15 Nov 2010 11:29:59 -0600 Subject: ARM: imx: Add core definitions for MX53 Add iomux, clocks, and memory map for Freescale's MX53 SoC. Add cpu_is_mx53 function to common.h. Add 3 more banks of gpio's to mxc_gpio_ports. Add MX53 phys offset address. Signed-off-by: Dinh Nguyen Signed-off-by: Sascha Hauer --- arch/arm/mach-mx5/clock-mx51-mx53.c | 1189 +++++++++++++++++++++++++++++++++++ 1 file changed, 1189 insertions(+) create mode 100644 arch/arm/mach-mx5/clock-mx51-mx53.c (limited to 'arch/arm/mach-mx5/clock-mx51-mx53.c') diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c new file mode 100644 index 000000000000..ca4f9d58cfeb --- /dev/null +++ b/arch/arm/mach-mx5/clock-mx51-mx53.c @@ -0,0 +1,1189 @@ +/* + * Copyright 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright (C) 2009-2010 Amit Kucheria + * + * 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 "crm_regs.h" + +/* External clock values passed-in by the board code */ +static unsigned long external_high_reference, external_low_reference; +static unsigned long oscillator_reference, ckih2_reference; + +static struct clk osc_clk; +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 mx53_pll4_sw_clk; +static struct clk lp_apm_clk; +static struct clk periph_apm_clk; +static struct clk ahb_clk; +static struct clk ipg_clk; +static struct clk usboh3_clk; + +#define MAX_DPLL_WAIT_TRIES 1000 /* 1000 * udelay(1) = 1ms */ + +/* calculate best pre and post dividers to get the required divider */ +static void __calc_pre_post_dividers(u32 div, u32 *pre, u32 *post, + u32 max_pre, u32 max_post) +{ + if (div >= max_pre * max_post) { + *pre = max_pre; + *post = max_post; + } else if (div >= max_pre) { + u32 min_pre, temp_pre, old_err, err; + min_pre = DIV_ROUND_UP(div, max_post); + old_err = max_pre; + for (temp_pre = max_pre; 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_ROUND_UP(div, *pre); + } else { + *pre = div; + *post = 1; + } +} + +static void _clk_ccgr_setclk(struct clk *clk, unsigned mode) +{ + u32 reg = __raw_readl(clk->enable_reg); + + reg &= ~(MXC_CCM_CCGRx_CG_MASK << clk->enable_shift); + reg |= mode << clk->enable_shift; + + __raw_writel(reg, clk->enable_reg); +} + +static int _clk_ccgr_enable(struct clk *clk) +{ + _clk_ccgr_setclk(clk, MXC_CCM_CCGRx_MOD_ON); + return 0; +} + +static void _clk_ccgr_disable(struct clk *clk) +{ + _clk_ccgr_setclk(clk, MXC_CCM_CCGRx_MOD_OFF); +} + +static int _clk_ccgr_enable_inrun(struct clk *clk) +{ + _clk_ccgr_setclk(clk, MXC_CCM_CCGRx_MOD_IDLE); + return 0; +} + +static void _clk_ccgr_disable_inwait(struct clk *clk) +{ + _clk_ccgr_setclk(clk, MXC_CCM_CCGRx_MOD_IDLE); +} + +/* + * 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 -EINVAL; +} + +static inline void __iomem *_get_pll_base(struct clk *pll) +{ + if (pll == &pll1_main_clk) + return MX51_DPLL1_BASE; + else if (pll == &pll2_sw_clk) + return MX51_DPLL2_BASE; + else if (pll == &pll3_sw_clk) + return MX51_DPLL3_BASE; + else if (pll == &mx53_pll4_sw_clk) + return MX53_DPLL4_BASE; + else + BUG(); + + return NULL; +} + +static unsigned long clk_pll_get_rate(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; + void __iomem *pllbase; + s64 temp; + unsigned long parent_rate; + + parent_rate = clk_get_rate(clk->parent); + + 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 * 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; + + return temp; +} + +static int _clk_pll_set_rate(struct clk *clk, unsigned long rate) +{ + u32 reg; + void __iomem *pllbase; + + long mfi, pdf, mfn, mfd = 999999; + s64 temp64; + unsigned long quad_parent_rate; + unsigned long pll_hfsm, dp_ctl; + unsigned long parent_rate; + + parent_rate = clk_get_rate(clk->parent); + + pllbase = _get_pll_base(clk); + + quad_parent_rate = 4 * parent_rate; + pdf = mfi = -1; + while (++pdf < 16 && mfi < 5) + mfi = rate * (pdf+1) / quad_parent_rate; + if (mfi > 15) + return -EINVAL; + 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); + } + + return 0; +} + +static int _clk_pll_enable(struct clk *clk) +{ + u32 reg; + void __iomem *pllbase; + int i = 0; + + 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 */ + do { + reg = __raw_readl(pllbase + MXC_PLL_DP_CTL); + if (reg & MXC_PLL_DP_CTL_LRF) + break; + + udelay(1); + } while (++i < MAX_DPLL_WAIT_TRIES); + + if (i == MAX_DPLL_WAIT_TRIES) { + pr_err("MX5: pll locking failed\n"); + return -EINVAL; + } + + return 0; +} + +static void _clk_pll_disable(struct clk *clk) +{ + u32 reg; + void __iomem *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 int _clk_pll1_sw_set_parent(struct clk *clk, struct clk *parent) +{ + u32 reg, step; + + reg = __raw_readl(MXC_CCM_CCSR); + + /* When switching from pll_main_clk to a bypass clock, first select a + * multiplexed clock in 'step_sel', then shift the glitchless mux + * 'pll1_sw_clk_sel'. + * + * When switching back, do it in reverse order + */ + if (parent == &pll1_main_clk) { + /* Switch to pll1_main_clk */ + reg &= ~MXC_CCM_CCSR_PLL1_SW_CLK_SEL; + __raw_writel(reg, MXC_CCM_CCSR); + /* step_clk mux switched to lp_apm, to save power. */ + reg = __raw_readl(MXC_CCM_CCSR); + reg &= ~MXC_CCM_CCSR_STEP_SEL_MASK; + reg |= (MXC_CCM_CCSR_STEP_SEL_LP_APM << + MXC_CCM_CCSR_STEP_SEL_OFFSET); + } else { + if (parent == &lp_apm_clk) { + step = MXC_CCM_CCSR_STEP_SEL_LP_APM; + } else if (parent == &pll2_sw_clk) { + step = MXC_CCM_CCSR_STEP_SEL_PLL2_DIVIDED; + } else if (parent == &pll3_sw_clk) { + step = MXC_CCM_CCSR_STEP_SEL_PLL3_DIVIDED; + } else + return -EINVAL; + + reg &= ~MXC_CCM_CCSR_STEP_SEL_MASK; + reg |= (step << MXC_CCM_CCSR_STEP_SEL_OFFSET); + + __raw_writel(reg, MXC_CCM_CCSR); + /* Switch to step_clk */ + reg = __raw_readl(MXC_CCM_CCSR); + reg |= MXC_CCM_CCSR_PLL1_SW_CLK_SEL; + } + __raw_writel(reg, MXC_CCM_CCSR); + return 0; +} + +static unsigned long clk_pll1_sw_get_rate(struct clk *clk) +{ + u32 reg, div; + unsigned long parent_rate; + + parent_rate = clk_get_rate(clk->parent); + + 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; + } else + div = 1; + return parent_rate / div; +} + +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 |= MXC_CCM_CCSR_PLL2_SW_CLK_SEL; + + __raw_writel(reg, MXC_CCM_CCSR); + return 0; +} + +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 + return -EINVAL; + + __raw_writel(reg, MXC_CCM_CCSR); + + return 0; +} + +static unsigned long clk_cpu_get_rate(struct clk *clk) +{ + u32 cacrr, div; + unsigned long parent_rate; + + parent_rate = clk_get_rate(clk->parent); + cacrr = __raw_readl(MXC_CCM_CACRR); + div = (cacrr & MXC_CCM_CACRR_ARM_PODF_MASK) + 1; + + return parent_rate / div; +} + +static int clk_cpu_set_rate(struct clk *clk, unsigned long rate) +{ + u32 reg, cpu_podf; + unsigned long parent_rate; + + parent_rate = clk_get_rate(clk->parent); + cpu_podf = parent_rate / rate - 1; + /* use post divider to change freq */ + reg = __raw_readl(MXC_CCM_CACRR); + reg &= ~MXC_CCM_CACRR_ARM_PODF_MASK; + reg |= cpu_podf << MXC_CCM_CACRR_ARM_PODF_OFFSET; + __raw_writel(reg, MXC_CCM_CACRR); + + return 0; +} + +static int _clk_periph_apm_set_parent(struct clk *clk, struct clk *parent) +{ + u32 reg, mux; + int i = 0; + + 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); + + /* Wait for lock */ + do { + reg = __raw_readl(MXC_CCM_CDHIPR); + if (!(reg & MXC_CCM_CDHIPR_PERIPH_CLK_SEL_BUSY)) + break; + + udelay(1); + } while (++i < MAX_DPLL_WAIT_TRIES); + + if (i == MAX_DPLL_WAIT_TRIES) { + pr_err("MX5: Set parent for periph_apm clock failed\n"); + return -EINVAL; + } + + return 0; +} + +static int _clk_main_bus_set_parent(struct clk *clk, struct clk *parent) +{ + u32 reg; + + reg = __raw_readl(MXC_CCM_CBCDR); + + if (parent == &pll2_sw_clk) + reg &= ~MXC_CCM_CBCDR_PERIPH_CLK_SEL; + else if (parent == &periph_apm_clk) + reg |= MXC_CCM_CBCDR_PERIPH_CLK_SEL; + else + return -EINVAL; + + __raw_writel(reg, MXC_CCM_CBCDR); + + return 0; +} + +static struct clk main_bus_clk = { + .parent = &pll2_sw_clk, + .set_parent = _clk_main_bus_set_parent, +}; + +static unsigned long clk_ahb_get_rate(struct clk *clk) +{ + u32 reg, div; + unsigned long parent_rate; + + parent_rate = clk_get_rate(clk->parent); + + reg = __raw_readl(MXC_CCM_CBCDR); + div = ((reg & MXC_CCM_CBCDR_AHB_PODF_MASK) >> + MXC_CCM_CBCDR_AHB_PODF_OFFSET) + 1; + return parent_rate / div; +} + + +static int _clk_ahb_set_rate(struct clk *clk, unsigned long rate) +{ + u32 reg, div; + unsigned long parent_rate; + int i = 0; + + parent_rate = clk_get_rate(clk->parent); + + div = parent_rate / rate; + if (div > 8 || div < 1 || ((parent_rate / div) != rate)) + return -EINVAL; + + 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); + + /* Wait for lock */ + do { + reg = __raw_readl(MXC_CCM_CDHIPR); + if (!(reg & MXC_CCM_CDHIPR_AHB_PODF_BUSY)) + break; + + udelay(1); + } while (++i < MAX_DPLL_WAIT_TRIES); + + if (i == MAX_DPLL_WAIT_TRIES) { + pr_err("MX5: clk_ahb_set_rate failed\n"); + return -EINVAL; + } + + return 0; +} + +static unsigned long _clk_ahb_round_rate(struct clk *clk, + unsigned long rate) +{ + u32 div; + unsigned long parent_rate; + + parent_rate = clk_get_rate(clk->parent); + + div = parent_rate / rate; + if (div > 8) + div = 8; + else if (div == 0) + div++; + return parent_rate / div; +} + + +static int _clk_max_enable(struct clk *clk) +{ + u32 reg; + + _clk_ccgr_enable(clk); + + /* Handshake with MAX when LPM is entered. */ + reg = __raw_readl(MXC_CCM_CLPCR); + if (cpu_is_mx51()) + reg &= ~MX51_CCM_CLPCR_BYPASS_MAX_LPM_HS; + else if (cpu_is_mx53()) + reg &= ~MX53_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_ccgr_disable_inwait(clk); + + /* No Handshake with MAX when LPM is entered as its disabled. */ + reg = __raw_readl(MXC_CCM_CLPCR); + if (cpu_is_mx51()) + reg |= MX51_CCM_CLPCR_BYPASS_MAX_LPM_HS; + else if (cpu_is_mx53()) + reg &= ~MX53_CCM_CLPCR_BYPASS_MAX_LPM_HS; + __raw_writel(reg, MXC_CCM_CLPCR); +} + +static unsigned long clk_ipg_get_rate(struct clk *clk) +{ + u32 reg, div; + unsigned long parent_rate; + + parent_rate = clk_get_rate(clk->parent); + + reg = __raw_readl(MXC_CCM_CBCDR); + div = ((reg & MXC_CCM_CBCDR_IPG_PODF_MASK) >> + MXC_CCM_CBCDR_IPG_PODF_OFFSET) + 1; + + return parent_rate / div; +} + +static unsigned long clk_ipg_per_get_rate(struct clk *clk) +{ + u32 reg, prediv1, prediv2, podf; + unsigned long parent_rate; + + parent_rate = clk_get_rate(clk->parent); + + 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; + return parent_rate / (prediv1 * prediv2 * podf); + } else if (clk->parent == &ipg_clk) + return parent_rate; + else + BUG(); +} + +static int _clk_ipg_per_set_parent(struct clk *clk, struct clk *parent) +{ + u32 reg; + + reg = __raw_readl(MXC_CCM_CBCMR); + + reg &= ~MXC_CCM_CBCMR_PERCLK_LP_APM_CLK_SEL; + reg &= ~MXC_CCM_CBCMR_PERCLK_IPG_CLK_SEL; + + if (parent == &ipg_clk) + reg |= MXC_CCM_CBCMR_PERCLK_IPG_CLK_SEL; + else if (parent == &lp_apm_clk) + reg |= MXC_CCM_CBCMR_PERCLK_LP_APM_CLK_SEL; + else if (parent != &main_bus_clk) + return -EINVAL; + + __raw_writel(reg, MXC_CCM_CBCMR); + + return 0; +} + +#define clk_nfc_set_parent NULL + +static unsigned long clk_nfc_get_rate(struct clk *clk) +{ + unsigned long rate; + u32 reg, div; + + reg = __raw_readl(MXC_CCM_CBCDR); + div = ((reg & MXC_CCM_CBCDR_NFC_PODF_MASK) >> + MXC_CCM_CBCDR_NFC_PODF_OFFSET) + 1; + rate = clk_get_rate(clk->parent) / div; + WARN_ON(rate == 0); + return rate; +} + +static unsigned long clk_nfc_round_rate(struct clk *clk, + unsigned long rate) +{ + u32 div; + unsigned long parent_rate = clk_get_rate(clk->parent); + + if (!rate) + return -EINVAL; + + div = parent_rate / rate; + + if (parent_rate % rate) + div++; + + if (div > 8) + return -EINVAL; + + return parent_rate / div; + +} + +static int clk_nfc_set_rate(struct clk *clk, unsigned long rate) +{ + u32 reg, div; + + div = clk_get_rate(clk->parent) / rate; + if (div == 0) + div++; + if (((clk_get_rate(clk->parent) / div) != rate) || (div > 8)) + return -EINVAL; + + 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); + + while (__raw_readl(MXC_CCM_CDHIPR) & + MXC_CCM_CDHIPR_NFC_IPG_INT_MEM_PODF_BUSY){ + } + + return 0; +} + +static unsigned long get_high_reference_clock_rate(struct clk *clk) +{ + return external_high_reference; +} + +static unsigned long get_low_reference_clock_rate(struct clk *clk) +{ + return external_low_reference; +} + +static unsigned long get_oscillator_reference_clock_rate(struct clk *clk) +{ + return oscillator_reference; +} + +static unsigned long get_ckih2_reference_clock_rate(struct clk *clk) +{ + return ckih2_reference; +} + +static unsigned long clk_emi_slow_get_rate(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; + + return clk_get_rate(clk->parent) / div; +} + +/* External high frequency clock */ +static struct clk ckih_clk = { + .get_rate = get_high_reference_clock_rate, +}; + +static struct clk ckih2_clk = { + .get_rate = get_ckih2_reference_clock_rate, +}; + +static struct clk osc_clk = { + .get_rate = get_oscillator_reference_clock_rate, +}; + +/* External low frequency (32kHz) clock */ +static struct clk ckil_clk = { + .get_rate = get_low_reference_clock_rate, +}; + +static struct clk pll1_main_clk = { + .parent = &osc_clk, + .get_rate = clk_pll_get_rate, + .enable = _clk_pll_enable, + .disable = _clk_pll_disable, +}; + +/* Clock tree block diagram (WIP): + * CCM: Clock Controller Module + * + * PLL output -> | + * | CCM Switcher -> CCM_CLK_ROOT_GEN -> + * PLL bypass -> | + * + */ + +/* PLL1 SW supplies to ARM core */ +static struct clk pll1_sw_clk = { + .parent = &pll1_main_clk, + .set_parent = _clk_pll1_sw_set_parent, + .get_rate = clk_pll1_sw_get_rate, +}; + +/* PLL2 SW supplies to AXI/AHB/IP buses */ +static struct clk pll2_sw_clk = { + .parent = &osc_clk, + .get_rate = clk_pll_get_rate, + .set_rate = _clk_pll_set_rate, + .set_parent = _clk_pll2_sw_set_parent, + .enable = _clk_pll_enable, + .disable = _clk_pll_disable, +}; + +/* PLL3 SW supplies to serial clocks like USB, SSI, etc. */ +static struct clk pll3_sw_clk = { + .parent = &osc_clk, + .set_rate = _clk_pll_set_rate, + .get_rate = clk_pll_get_rate, + .enable = _clk_pll_enable, + .disable = _clk_pll_disable, +}; + +/* PLL4 SW supplies to LVDS Display Bridge(LDB) */ +static struct clk mx53_pll4_sw_clk = { + .parent = &osc_clk, + .set_rate = _clk_pll_set_rate, + .enable = _clk_pll_enable, + .disable = _clk_pll_disable, +}; + +/* Low-power Audio Playback Mode clock */ +static struct clk lp_apm_clk = { + .parent = &osc_clk, + .set_parent = _clk_lp_apm_set_parent, +}; + +static struct clk periph_apm_clk = { + .parent = &pll1_sw_clk, + .set_parent = _clk_periph_apm_set_parent, +}; + +static struct clk cpu_clk = { + .parent = &pll1_sw_clk, + .get_rate = clk_cpu_get_rate, + .set_rate = clk_cpu_set_rate, +}; + +static struct clk ahb_clk = { + .parent = &main_bus_clk, + .get_rate = clk_ahb_get_rate, + .set_rate = _clk_ahb_set_rate, + .round_rate = _clk_ahb_round_rate, +}; + +/* Main IP interface clock for access to registers */ +static struct clk ipg_clk = { + .parent = &ahb_clk, + .get_rate = clk_ipg_get_rate, +}; + +static struct clk ipg_perclk = { + .parent = &lp_apm_clk, + .get_rate = clk_ipg_per_get_rate, + .set_parent = _clk_ipg_per_set_parent, +}; + +static struct clk ahb_max_clk = { + .parent = &ahb_clk, + .enable_reg = MXC_CCM_CCGR0, + .enable_shift = MXC_CCM_CCGRx_CG14_OFFSET, + .enable = _clk_max_enable, + .disable = _clk_max_disable, +}; + +static struct clk aips_tz1_clk = { + .parent = &ahb_clk, + .secondary = &ahb_max_clk, + .enable_reg = MXC_CCM_CCGR0, + .enable_shift = MXC_CCM_CCGRx_CG12_OFFSET, + .enable = _clk_ccgr_enable, + .disable = _clk_ccgr_disable_inwait, +}; + +static struct clk aips_tz2_clk = { + .parent = &ahb_clk, + .secondary = &ahb_max_clk, + .enable_reg = MXC_CCM_CCGR0, + .enable_shift = MXC_CCM_CCGRx_CG13_OFFSET, + .enable = _clk_ccgr_enable, + .disable = _clk_ccgr_disable_inwait, +}; + +static struct clk gpt_32k_clk = { + .id = 0, + .parent = &ckil_clk, +}; + +static struct clk kpp_clk = { + .id = 0, +}; + +static struct clk emi_slow_clk = { + .parent = &pll2_sw_clk, + .enable_reg = MXC_CCM_CCGR5, + .enable_shift = MXC_CCM_CCGRx_CG8_OFFSET, + .enable = _clk_ccgr_enable, + .disable = _clk_ccgr_disable_inwait, + .get_rate = clk_emi_slow_get_rate, +}; + +#define DEFINE_CLOCK_CCGR(name, i, er, es, pfx, p, s) \ + static struct clk name = { \ + .id = i, \ + .enable_reg = er, \ + .enable_shift = es, \ + .get_rate = pfx##_get_rate, \ + .set_rate = pfx##_set_rate, \ + .round_rate = pfx##_round_rate, \ + .set_parent = pfx##_set_parent, \ + .enable = _clk_ccgr_enable, \ + .disable = _clk_ccgr_disable, \ + .parent = p, \ + .secondary = s, \ + } + +#define DEFINE_CLOCK_MAX(name, i, er, es, pfx, p, s) \ + static struct clk name = { \ + .id = i, \ + .enable_reg = er, \ + .enable_shift = es, \ + .get_rate = pfx##_get_rate, \ + .set_rate = pfx##_set_rate, \ + .set_parent = pfx##_set_parent, \ + .enable = _clk_max_enable, \ + .disable = _clk_max_disable, \ + .parent = p, \ + .secondary = s, \ + } + +#define CLK_GET_RATE(name, nr, bitsname) \ +static unsigned long clk_##name##_get_rate(struct clk *clk) \ +{ \ + u32 reg, pred, podf; \ + \ + reg = __raw_readl(MXC_CCM_CSCDR##nr); \ + pred = (reg & MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PRED_MASK) \ + >> MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PRED_OFFSET; \ + podf = (reg & MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PODF_MASK) \ + >> MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PODF_OFFSET; \ + \ + return DIV_ROUND_CLOSEST(clk_get_rate(clk->parent), \ + (pred + 1) * (podf + 1)); \ +} + +#define CLK_SET_PARENT(name, nr, bitsname) \ +static int clk_##name##_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_CSCMR##nr) & \ + ~MXC_CCM_CSCMR##nr##_##bitsname##_CLK_SEL_MASK; \ + reg |= mux << MXC_CCM_CSCMR##nr##_##bitsname##_CLK_SEL_OFFSET; \ + __raw_writel(reg, MXC_CCM_CSCMR##nr); \ + \ + return 0; \ +} + +#define CLK_SET_RATE(name, nr, bitsname) \ +static int clk_##name##_set_rate(struct clk *clk, unsigned long rate) \ +{ \ + u32 reg, div, parent_rate; \ + u32 pre = 0, post = 0; \ + \ + parent_rate = clk_get_rate(clk->parent); \ + div = parent_rate / rate; \ + \ + if ((parent_rate / div) != rate) \ + return -EINVAL; \ + \ + __calc_pre_post_dividers(div, &pre, &post, \ + (MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PRED_MASK >> \ + MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PRED_OFFSET) + 1, \ + (MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PODF_MASK >> \ + MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PODF_OFFSET) + 1);\ + \ + /* Set sdhc1 clock divider */ \ + reg = __raw_readl(MXC_CCM_CSCDR##nr) & \ + ~(MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PRED_MASK \ + | MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PODF_MASK); \ + reg |= (post - 1) << \ + MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PODF_OFFSET; \ + reg |= (pre - 1) << \ + MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PRED_OFFSET; \ + __raw_writel(reg, MXC_CCM_CSCDR##nr); \ + \ + return 0; \ +} + +/* UART */ +CLK_GET_RATE(uart, 1, UART) +CLK_SET_PARENT(uart, 1, UART) + +static struct clk uart_root_clk = { + .parent = &pll2_sw_clk, + .get_rate = clk_uart_get_rate, + .set_parent = clk_uart_set_parent, +}; + +/* USBOH3 */ +CLK_GET_RATE(usboh3, 1, USBOH3) +CLK_SET_PARENT(usboh3, 1, USBOH3) + +static struct clk usboh3_clk = { + .parent = &pll2_sw_clk, + .get_rate = clk_usboh3_get_rate, + .set_parent = clk_usboh3_set_parent, +}; + +/* eCSPI */ +CLK_GET_RATE(ecspi, 2, CSPI) +CLK_SET_PARENT(ecspi, 1, CSPI) + +static struct clk ecspi_main_clk = { + .parent = &pll3_sw_clk, + .get_rate = clk_ecspi_get_rate, + .set_parent = clk_ecspi_set_parent, +}; + +/* eSDHC */ +CLK_GET_RATE(esdhc1, 1, ESDHC1_MSHC1) +CLK_SET_PARENT(esdhc1, 1, ESDHC1_MSHC1) +CLK_SET_RATE(esdhc1, 1, ESDHC1_MSHC1) + +CLK_GET_RATE(esdhc2, 1, ESDHC2_MSHC2) +CLK_SET_PARENT(esdhc2, 1, ESDHC2_MSHC2) +CLK_SET_RATE(esdhc2, 1, ESDHC2_MSHC2) + +#define DEFINE_CLOCK_FULL(name, i, er, es, gr, sr, e, d, p, s) \ + static struct clk name = { \ + .id = i, \ + .enable_reg = er, \ + .enable_shift = es, \ + .get_rate = gr, \ + .set_rate = sr, \ + .enable = e, \ + .disable = d, \ + .parent = p, \ + .secondary = s, \ + } + +#define DEFINE_CLOCK(name, i, er, es, gr, sr, p, s) \ + DEFINE_CLOCK_FULL(name, i, er, es, gr, sr, _clk_ccgr_enable, _clk_ccgr_disable, p, s) + +/* Shared peripheral bus arbiter */ +DEFINE_CLOCK(spba_clk, 0, MXC_CCM_CCGR5, MXC_CCM_CCGRx_CG0_OFFSET, + NULL, NULL, &ipg_clk, NULL); + +/* UART */ +DEFINE_CLOCK(uart1_ipg_clk, 0, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG3_OFFSET, + NULL, NULL, &ipg_clk, &aips_tz1_clk); +DEFINE_CLOCK(uart2_ipg_clk, 1, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG5_OFFSET, + NULL, NULL, &ipg_clk, &aips_tz1_clk); +DEFINE_CLOCK(uart3_ipg_clk, 2, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG7_OFFSET, + NULL, NULL, &ipg_clk, &spba_clk); +DEFINE_CLOCK(uart1_clk, 0, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG4_OFFSET, + NULL, NULL, &uart_root_clk, &uart1_ipg_clk); +DEFINE_CLOCK(uart2_clk, 1, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG6_OFFSET, + NULL, NULL, &uart_root_clk, &uart2_ipg_clk); +DEFINE_CLOCK(uart3_clk, 2, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG8_OFFSET, + NULL, NULL, &uart_root_clk, &uart3_ipg_clk); + +/* GPT */ +DEFINE_CLOCK(gpt_ipg_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG10_OFFSET, + NULL, NULL, &ipg_clk, NULL); +DEFINE_CLOCK(gpt_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG9_OFFSET, + NULL, NULL, &ipg_clk, &gpt_ipg_clk); + +/* I2C */ +DEFINE_CLOCK(i2c1_clk, 0, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG9_OFFSET, + NULL, NULL, &ipg_clk, NULL); +DEFINE_CLOCK(i2c2_clk, 1, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG10_OFFSET, + NULL, NULL, &ipg_clk, NULL); +DEFINE_CLOCK(hsi2c_clk, 0, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG11_OFFSET, + NULL, NULL, &ipg_clk, NULL); + +/* FEC */ +DEFINE_CLOCK(fec_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG12_OFFSET, + NULL, NULL, &ipg_clk, NULL); + +/* NFC */ +DEFINE_CLOCK_CCGR(nfc_clk, 0, MXC_CCM_CCGR5, MXC_CCM_CCGRx_CG10_OFFSET, + clk_nfc, &emi_slow_clk, NULL); + +/* SSI */ +DEFINE_CLOCK(ssi1_ipg_clk, 0, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG8_OFFSET, + NULL, NULL, &ipg_clk, NULL); +DEFINE_CLOCK(ssi1_clk, 0, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG9_OFFSET, + NULL, NULL, &pll3_sw_clk, &ssi1_ipg_clk); +DEFINE_CLOCK(ssi2_ipg_clk, 1, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG10_OFFSET, + NULL, NULL, &ipg_clk, NULL); +DEFINE_CLOCK(ssi2_clk, 1, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG11_OFFSET, + NULL, NULL, &pll3_sw_clk, &ssi2_ipg_clk); + +/* eCSPI */ +DEFINE_CLOCK_FULL(ecspi1_ipg_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG9_OFFSET, + NULL, NULL, _clk_ccgr_enable_inrun, _clk_ccgr_disable, + &ipg_clk, &spba_clk); +DEFINE_CLOCK(ecspi1_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG10_OFFSET, + NULL, NULL, &ecspi_main_clk, &ecspi1_ipg_clk); +DEFINE_CLOCK_FULL(ecspi2_ipg_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG11_OFFSET, + NULL, NULL, _clk_ccgr_enable_inrun, _clk_ccgr_disable, + &ipg_clk, &aips_tz2_clk); +DEFINE_CLOCK(ecspi2_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG12_OFFSET, + NULL, NULL, &ecspi_main_clk, &ecspi2_ipg_clk); + +/* CSPI */ +DEFINE_CLOCK(cspi_ipg_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG9_OFFSET, + NULL, NULL, &ipg_clk, &aips_tz2_clk); +DEFINE_CLOCK(cspi_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG13_OFFSET, + NULL, NULL, &ipg_clk, &cspi_ipg_clk); + +/* SDMA */ +DEFINE_CLOCK(sdma_clk, 1, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG15_OFFSET, + NULL, NULL, &ahb_clk, NULL); + +/* eSDHC */ +DEFINE_CLOCK_FULL(esdhc1_ipg_clk, 0, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG0_OFFSET, + NULL, NULL, _clk_max_enable, _clk_max_disable, &ipg_clk, NULL); +DEFINE_CLOCK_MAX(esdhc1_clk, 0, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG1_OFFSET, + clk_esdhc1, &pll2_sw_clk, &esdhc1_ipg_clk); +DEFINE_CLOCK_FULL(esdhc2_ipg_clk, 1, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG2_OFFSET, + NULL, NULL, _clk_max_enable, _clk_max_disable, &ipg_clk, NULL); +DEFINE_CLOCK_MAX(esdhc2_clk, 1, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG3_OFFSET, + clk_esdhc2, &pll2_sw_clk, &esdhc2_ipg_clk); + +#define _REGISTER_CLOCK(d, n, c) \ + { \ + .dev_id = d, \ + .con_id = n, \ + .clk = &c, \ + }, + +static struct clk_lookup mx51_lookups[] = { + _REGISTER_CLOCK("imx-uart.0", NULL, uart1_clk) + _REGISTER_CLOCK("imx-uart.1", NULL, uart2_clk) + _REGISTER_CLOCK("imx-uart.2", NULL, uart3_clk) + _REGISTER_CLOCK(NULL, "gpt", gpt_clk) + _REGISTER_CLOCK("fec.0", NULL, fec_clk) + _REGISTER_CLOCK("imx-i2c.0", NULL, i2c1_clk) + _REGISTER_CLOCK("imx-i2c.1", NULL, i2c2_clk) + _REGISTER_CLOCK("imx-i2c.2", NULL, hsi2c_clk) + _REGISTER_CLOCK("mxc-ehci.0", "usb", usboh3_clk) + _REGISTER_CLOCK("mxc-ehci.0", "usb_ahb", ahb_clk) + _REGISTER_CLOCK("mxc-ehci.1", "usb", usboh3_clk) + _REGISTER_CLOCK("mxc-ehci.1", "usb_ahb", ahb_clk) + _REGISTER_CLOCK("fsl-usb2-udc", "usb", usboh3_clk) + _REGISTER_CLOCK("fsl-usb2-udc", "usb_ahb", ahb_clk) + _REGISTER_CLOCK("imx-keypad.0", NULL, kpp_clk) + _REGISTER_CLOCK("mxc_nand", NULL, nfc_clk) + _REGISTER_CLOCK("imx-ssi.0", NULL, ssi1_clk) + _REGISTER_CLOCK("imx-ssi.1", NULL, ssi2_clk) + _REGISTER_CLOCK("imx-sdma", NULL, sdma_clk) + _REGISTER_CLOCK(NULL, "ckih", ckih_clk) + _REGISTER_CLOCK(NULL, "ckih2", ckih2_clk) + _REGISTER_CLOCK(NULL, "gpt_32k", gpt_32k_clk) + _REGISTER_CLOCK("imx51-ecspi.0", NULL, ecspi1_clk) + _REGISTER_CLOCK("imx51-ecspi.1", NULL, ecspi2_clk) + _REGISTER_CLOCK("imx51-cspi.0", NULL, cspi_clk) + _REGISTER_CLOCK("sdhci-esdhc-imx.0", NULL, esdhc1_clk) + _REGISTER_CLOCK("sdhci-esdhc-imx.1", NULL, esdhc2_clk) + _REGISTER_CLOCK(NULL, "cpu_clk", cpu_clk) +}; + +static struct clk_lookup mx53_lookups[] = { + _REGISTER_CLOCK("imx-uart.0", NULL, uart1_clk) + _REGISTER_CLOCK("imx-uart.1", NULL, uart2_clk) + _REGISTER_CLOCK("imx-uart.2", NULL, uart3_clk) + _REGISTER_CLOCK(NULL, "gpt", gpt_clk) + _REGISTER_CLOCK("fec.0", NULL, fec_clk) +}; + +static void clk_tree_init(void) +{ + u32 reg; + + 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. + * + * FIXME: Verify if true for all boards + */ + 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); +} + +int __init mx51_clocks_init(unsigned long ckil, unsigned long osc, + unsigned long ckih1, unsigned long ckih2) +{ + int i; + + external_low_reference = ckil; + external_high_reference = ckih1; + ckih2_reference = ckih2; + oscillator_reference = osc; + + for (i = 0; i < ARRAY_SIZE(mx51_lookups); i++) + clkdev_add(&mx51_lookups[i]); + + clk_tree_init(); + + clk_enable(&cpu_clk); + clk_enable(&main_bus_clk); + + /* set the usboh3_clk parent to pll2_sw_clk */ + clk_set_parent(&usboh3_clk, &pll2_sw_clk); + + /* Set SDHC parents to be PLL2 */ + clk_set_parent(&esdhc1_clk, &pll2_sw_clk); + clk_set_parent(&esdhc2_clk, &pll2_sw_clk); + + /* set SDHC root clock as 166.25MHZ*/ + clk_set_rate(&esdhc1_clk, 166250000); + clk_set_rate(&esdhc2_clk, 166250000); + + /* System timer */ + mxc_timer_init(&gpt_clk, MX51_IO_ADDRESS(MX51_GPT1_BASE_ADDR), + MX51_MXC_INT_GPT); + return 0; +} + +int __init mx53_clocks_init(unsigned long ckil, unsigned long osc, + unsigned long ckih1, unsigned long ckih2) +{ + int i; + + external_low_reference = ckil; + external_high_reference = ckih1; + ckih2_reference = ckih2; + oscillator_reference = osc; + + for (i = 0; i < ARRAY_SIZE(mx53_lookups); i++) + clkdev_add(&mx53_lookups[i]); + + clk_tree_init(); + + clk_enable(&cpu_clk); + clk_enable(&main_bus_clk); + + /* System timer */ + mxc_timer_init(&gpt_clk, MX53_IO_ADDRESS(MX53_GPT1_BASE_ADDR), + MX53_INT_GPT); + return 0; +} -- cgit v1.2.3 From 9ab4650f718a0e1cb8792bab4ef97efca4ac75c2 Mon Sep 17 00:00:00 2001 From: Dinh Nguyen Date: Mon, 15 Nov 2010 11:30:01 -0600 Subject: ARM: imx: Get the silicon version from the IIM module Instead of reading the silicon version from ROM, we should read the SREV register from the IIM. Freescale has dropped all support for MX51 REV1.0, only MX51 REV 2.0 and 3.0 are valid. Signed-off-by: Dinh Nguyen Signed-off-by: Sascha Hauer --- arch/arm/mach-mx5/clock-mx51-mx53.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'arch/arm/mach-mx5/clock-mx51-mx53.c') diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c index ca4f9d58cfeb..344ee8ef1eef 100644 --- a/arch/arm/mach-mx5/clock-mx51-mx53.c +++ b/arch/arm/mach-mx5/clock-mx51-mx53.c @@ -780,6 +780,12 @@ static struct clk ahb_clk = { .round_rate = _clk_ahb_round_rate, }; +static struct clk iim_clk = { + .parent = &ipg_clk, + .enable_reg = MXC_CCM_CCGR0, + .enable_shift = MXC_CCM_CCGRx_CG15_OFFSET, +}; + /* Main IP interface clock for access to registers */ static struct clk ipg_clk = { .parent = &ahb_clk, @@ -1099,6 +1105,7 @@ static struct clk_lookup mx51_lookups[] = { _REGISTER_CLOCK("sdhci-esdhc-imx.0", NULL, esdhc1_clk) _REGISTER_CLOCK("sdhci-esdhc-imx.1", NULL, esdhc2_clk) _REGISTER_CLOCK(NULL, "cpu_clk", cpu_clk) + _REGISTER_CLOCK(NULL, "iim_clk", iim_clk) }; static struct clk_lookup mx53_lookups[] = { @@ -1107,6 +1114,7 @@ static struct clk_lookup mx53_lookups[] = { _REGISTER_CLOCK("imx-uart.2", NULL, uart3_clk) _REGISTER_CLOCK(NULL, "gpt", gpt_clk) _REGISTER_CLOCK("fec.0", NULL, fec_clk) + _REGISTER_CLOCK(NULL, "iim_clk", iim_clk) }; static void clk_tree_init(void) @@ -1147,6 +1155,10 @@ int __init mx51_clocks_init(unsigned long ckil, unsigned long osc, clk_enable(&cpu_clk); clk_enable(&main_bus_clk); + clk_enable(&iim_clk); + mx51_revision(); + clk_disable(&iim_clk); + /* set the usboh3_clk parent to pll2_sw_clk */ clk_set_parent(&usboh3_clk, &pll2_sw_clk); @@ -1182,6 +1194,10 @@ int __init mx53_clocks_init(unsigned long ckil, unsigned long osc, clk_enable(&cpu_clk); clk_enable(&main_bus_clk); + clk_enable(&iim_clk); + mx53_revision(); + clk_disable(&iim_clk); + /* System timer */ mxc_timer_init(&gpt_clk, MX53_IO_ADDRESS(MX53_GPT1_BASE_ADDR), MX53_INT_GPT); -- cgit v1.2.3 From 7f77f91dc0171ac11a8b95ba761144d732d4e907 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Mon, 6 Dec 2010 16:38:33 -0200 Subject: ARM: mx5: add watchdog clocks Signed-off-by: Fabio Estevam Signed-off-by: Sascha Hauer --- arch/arm/mach-mx5/clock-mx51-mx53.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'arch/arm/mach-mx5/clock-mx51-mx53.c') diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c index 344ee8ef1eef..b04d54daddb0 100644 --- a/arch/arm/mach-mx5/clock-mx51-mx53.c +++ b/arch/arm/mach-mx5/clock-mx51-mx53.c @@ -833,6 +833,10 @@ static struct clk kpp_clk = { .id = 0, }; +static struct clk dummy_clk = { + .id = 0, +}; + static struct clk emi_slow_clk = { .parent = &pll2_sw_clk, .enable_reg = MXC_CCM_CCGR5, @@ -1106,6 +1110,8 @@ static struct clk_lookup mx51_lookups[] = { _REGISTER_CLOCK("sdhci-esdhc-imx.1", NULL, esdhc2_clk) _REGISTER_CLOCK(NULL, "cpu_clk", cpu_clk) _REGISTER_CLOCK(NULL, "iim_clk", iim_clk) + _REGISTER_CLOCK("imx-wdt.0", NULL, dummy_clk) + _REGISTER_CLOCK("imx-wdt.1", NULL, dummy_clk) }; static struct clk_lookup mx53_lookups[] = { -- cgit v1.2.3 From 2c1f4672f0711e7f23ae49cbb7541088126fe576 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Tue, 7 Dec 2010 14:16:04 -0200 Subject: watchdog: imx: use clk_get to acquire the watchdog clock Use clk_get to acquire the watchdog clock and also avoid hardcoding the clock name. Signed-off-by: Fabio Estevam Signed-off-by: Sascha Hauer --- arch/arm/mach-mx5/clock-mx51-mx53.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/arm/mach-mx5/clock-mx51-mx53.c') diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c index b04d54daddb0..ed26de68a996 100644 --- a/arch/arm/mach-mx5/clock-mx51-mx53.c +++ b/arch/arm/mach-mx5/clock-mx51-mx53.c @@ -1110,8 +1110,8 @@ static struct clk_lookup mx51_lookups[] = { _REGISTER_CLOCK("sdhci-esdhc-imx.1", NULL, esdhc2_clk) _REGISTER_CLOCK(NULL, "cpu_clk", cpu_clk) _REGISTER_CLOCK(NULL, "iim_clk", iim_clk) - _REGISTER_CLOCK("imx-wdt.0", NULL, dummy_clk) - _REGISTER_CLOCK("imx-wdt.1", NULL, dummy_clk) + _REGISTER_CLOCK("imx2-wdt.0", NULL, dummy_clk) + _REGISTER_CLOCK("imx2-wdt.1", NULL, dummy_clk) }; static struct clk_lookup mx53_lookups[] = { -- cgit v1.2.3 From f25972233fbe4b60dc4b514def4caf40aa1bb85a Mon Sep 17 00:00:00 2001 From: Peter Horton Date: Fri, 3 Dec 2010 17:07:28 +0000 Subject: mx51: add SSI3 Add SSI3 to MX51 Signed-off-by: Peter Horton Signed-off-by: Sascha Hauer --- arch/arm/mach-mx5/clock-mx51-mx53.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch/arm/mach-mx5/clock-mx51-mx53.c') diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c index ed26de68a996..9fc65bbc9d77 100644 --- a/arch/arm/mach-mx5/clock-mx51-mx53.c +++ b/arch/arm/mach-mx5/clock-mx51-mx53.c @@ -1040,6 +1040,10 @@ DEFINE_CLOCK(ssi2_ipg_clk, 1, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG10_OFFSET, NULL, NULL, &ipg_clk, NULL); DEFINE_CLOCK(ssi2_clk, 1, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG11_OFFSET, NULL, NULL, &pll3_sw_clk, &ssi2_ipg_clk); +DEFINE_CLOCK(ssi3_ipg_clk, 2, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG12_OFFSET, + NULL, NULL, &ipg_clk, NULL); +DEFINE_CLOCK(ssi3_clk, 2, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG13_OFFSET, + NULL, NULL, &pll3_sw_clk, &ssi3_ipg_clk); /* eCSPI */ DEFINE_CLOCK_FULL(ecspi1_ipg_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG9_OFFSET, @@ -1099,6 +1103,7 @@ static struct clk_lookup mx51_lookups[] = { _REGISTER_CLOCK("mxc_nand", NULL, nfc_clk) _REGISTER_CLOCK("imx-ssi.0", NULL, ssi1_clk) _REGISTER_CLOCK("imx-ssi.1", NULL, ssi2_clk) + _REGISTER_CLOCK("imx-ssi.2", NULL, ssi3_clk) _REGISTER_CLOCK("imx-sdma", NULL, sdma_clk) _REGISTER_CLOCK(NULL, "ckih", ckih_clk) _REGISTER_CLOCK(NULL, "ckih2", ckih2_clk) -- cgit v1.2.3 From 711669e5b80b6f2d88f61ed8a9681f83d8cbd201 Mon Sep 17 00:00:00 2001 From: "Arnaud Patard (Rtp)" Date: Mon, 20 Dec 2010 16:48:58 +0100 Subject: mx51: fix usb clock support Current code doesn't really enable the usb clocks so if they're disabled when booting linux, the kernel/machine will hang as soon as someone is trying to read a usb register Signed-off-by: Arnaud Patard Signed-off-by: Sascha Hauer --- arch/arm/mach-mx5/clock-mx51-mx53.c | 45 +++++++++++++++++++++++++++++++++++-- 1 file changed, 43 insertions(+), 2 deletions(-) (limited to 'arch/arm/mach-mx5/clock-mx51-mx53.c') diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c index 9fc65bbc9d77..2f9eae213094 100644 --- a/arch/arm/mach-mx5/clock-mx51-mx53.c +++ b/arch/arm/mach-mx5/clock-mx51-mx53.c @@ -954,6 +954,41 @@ static struct clk usboh3_clk = { .parent = &pll2_sw_clk, .get_rate = clk_usboh3_get_rate, .set_parent = clk_usboh3_set_parent, + .enable = _clk_ccgr_enable, + .disable = _clk_ccgr_disable, + .enable_reg = MXC_CCM_CCGR2, + .enable_shift = MXC_CCM_CCGRx_CG14_OFFSET, +}; + +static struct clk usb_ahb_clk = { + .parent = &ipg_clk, + .enable = _clk_ccgr_enable, + .disable = _clk_ccgr_disable, + .enable_reg = MXC_CCM_CCGR2, + .enable_shift = MXC_CCM_CCGRx_CG13_OFFSET, +}; + +static int clk_usb_phy1_set_parent(struct clk *clk, struct clk *parent) +{ + u32 reg; + + reg = __raw_readl(MXC_CCM_CSCMR1) & ~MXC_CCM_CSCMR1_USB_PHY_CLK_SEL; + + if (parent == &pll3_sw_clk) + reg |= 1 << MXC_CCM_CSCMR1_USB_PHY_CLK_SEL_OFFSET; + + __raw_writel(reg, MXC_CCM_CSCMR1); + + return 0; +} + +static struct clk usb_phy1_clk = { + .parent = &pll3_sw_clk, + .set_parent = clk_usb_phy1_set_parent, + .enable = _clk_ccgr_enable, + .enable_reg = MXC_CCM_CCGR2, + .enable_shift = MXC_CCM_CCGRx_CG0_OFFSET, + .disable = _clk_ccgr_disable, }; /* eCSPI */ @@ -1094,9 +1129,12 @@ static struct clk_lookup mx51_lookups[] = { _REGISTER_CLOCK("imx-i2c.1", NULL, i2c2_clk) _REGISTER_CLOCK("imx-i2c.2", NULL, hsi2c_clk) _REGISTER_CLOCK("mxc-ehci.0", "usb", usboh3_clk) - _REGISTER_CLOCK("mxc-ehci.0", "usb_ahb", ahb_clk) + _REGISTER_CLOCK("mxc-ehci.0", "usb_ahb", usb_ahb_clk) + _REGISTER_CLOCK("mxc-ehci.0", "usb_phy1", usb_phy1_clk) _REGISTER_CLOCK("mxc-ehci.1", "usb", usboh3_clk) - _REGISTER_CLOCK("mxc-ehci.1", "usb_ahb", ahb_clk) + _REGISTER_CLOCK("mxc-ehci.1", "usb_ahb", usb_ahb_clk) + _REGISTER_CLOCK("mxc-ehci.2", "usb", usboh3_clk) + _REGISTER_CLOCK("mxc-ehci.2", "usb_ahb", usb_ahb_clk) _REGISTER_CLOCK("fsl-usb2-udc", "usb", usboh3_clk) _REGISTER_CLOCK("fsl-usb2-udc", "usb_ahb", ahb_clk) _REGISTER_CLOCK("imx-keypad.0", NULL, kpp_clk) @@ -1170,6 +1208,9 @@ int __init mx51_clocks_init(unsigned long ckil, unsigned long osc, mx51_revision(); clk_disable(&iim_clk); + /* move usb_phy_clk to 24MHz */ + clk_set_parent(&usb_phy1_clk, &osc_clk); + /* set the usboh3_clk parent to pll2_sw_clk */ clk_set_parent(&usboh3_clk, &pll2_sw_clk); -- cgit v1.2.3 From b848169b37f71c494ea59b260ba665290c23c350 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Mon, 6 Dec 2010 09:13:21 +0100 Subject: ARM i.MX51: Add ipu clock support Signed-off-by: Sascha Hauer --- arch/arm/mach-mx5/clock-mx51-mx53.c | 140 ++++++++++++++++++++++++++++++++++++ 1 file changed, 140 insertions(+) (limited to 'arch/arm/mach-mx5/clock-mx51-mx53.c') diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c index 2f9eae213094..ba9432c8f843 100644 --- a/arch/arm/mach-mx5/clock-mx51-mx53.c +++ b/arch/arm/mach-mx5/clock-mx51-mx53.c @@ -39,6 +39,9 @@ static struct clk periph_apm_clk; static struct clk ahb_clk; static struct clk ipg_clk; static struct clk usboh3_clk; +static struct clk emi_fast_clk; +static struct clk ipu_clk; +static struct clk mipi_hsc1_clk; #define MAX_DPLL_WAIT_TRIES 1000 /* 1000 * udelay(1) = 1ms */ @@ -688,6 +691,19 @@ static unsigned long clk_emi_slow_get_rate(struct clk *clk) return clk_get_rate(clk->parent) / div; } +static unsigned long _clk_ddr_hf_get_rate(struct clk *clk) +{ + unsigned long rate; + u32 reg, div; + + reg = __raw_readl(MXC_CCM_CBCDR); + div = ((reg & MXC_CCM_CBCDR_DDR_PODF_MASK) >> + MXC_CCM_CBCDR_DDR_PODF_OFFSET) + 1; + rate = clk_get_rate(clk->parent) / div; + + return rate; +} + /* External high frequency clock */ static struct clk ckih_clk = { .get_rate = get_high_reference_clock_rate, @@ -846,6 +862,109 @@ static struct clk emi_slow_clk = { .get_rate = clk_emi_slow_get_rate, }; +static int clk_ipu_enable(struct clk *clk) +{ + u32 reg; + + _clk_ccgr_enable(clk); + + /* Enable 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); + + /* Enable handshake with IPU when LPM is entered */ + 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_ccgr_disable(clk); + + /* Disable handshake with IPU whe dividers are changed */ + reg = __raw_readl(MXC_CCM_CCDR); + reg |= MXC_CCM_CCDR_IPU_HS_MASK; + __raw_writel(reg, MXC_CCM_CCDR); + + /* Disable handshake with IPU when LPM is entered */ + reg = __raw_readl(MXC_CCM_CLPCR); + reg |= MXC_CCM_CLPCR_BYPASS_IPU_LPM_HS; + __raw_writel(reg, MXC_CCM_CLPCR); +} + +static struct clk ahbmux1_clk = { + .parent = &ahb_clk, + .secondary = &ahb_max_clk, + .enable_reg = MXC_CCM_CCGR0, + .enable_shift = MXC_CCM_CCGRx_CG8_OFFSET, + .enable = _clk_ccgr_enable, + .disable = _clk_ccgr_disable_inwait, +}; + +static struct clk ipu_sec_clk = { + .parent = &emi_fast_clk, + .secondary = &ahbmux1_clk, +}; + +static struct clk ddr_hf_clk = { + .parent = &pll1_sw_clk, + .get_rate = _clk_ddr_hf_get_rate, +}; + +static struct clk ddr_clk = { + .parent = &ddr_hf_clk, +}; + +/* clock definitions for MIPI HSC unit which has been removed + * from documentation, but not from hardware + */ +static int _clk_hsc_enable(struct clk *clk) +{ + u32 reg; + + _clk_ccgr_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_ccgr_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_hsp_clk = { + .parent = &ipu_clk, + .enable_reg = MXC_CCM_CCGR4, + .enable_shift = MXC_CCM_CCGRx_CG6_OFFSET, + .enable = _clk_hsc_enable, + .disable = _clk_hsc_disable, + .secondary = &mipi_hsc1_clk, +}; + #define DEFINE_CLOCK_CCGR(name, i, er, es, pfx, p, s) \ static struct clk name = { \ .id = i, \ @@ -1112,6 +1231,23 @@ DEFINE_CLOCK_FULL(esdhc2_ipg_clk, 1, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG2_OFFSET, DEFINE_CLOCK_MAX(esdhc2_clk, 1, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG3_OFFSET, clk_esdhc2, &pll2_sw_clk, &esdhc2_ipg_clk); +DEFINE_CLOCK(mipi_esc_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG5_OFFSET, NULL, NULL, NULL, &pll2_sw_clk); +DEFINE_CLOCK(mipi_hsc2_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG4_OFFSET, NULL, NULL, &mipi_esc_clk, &pll2_sw_clk); +DEFINE_CLOCK(mipi_hsc1_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG3_OFFSET, NULL, NULL, &mipi_hsc2_clk, &pll2_sw_clk); + +/* IPU */ +DEFINE_CLOCK_FULL(ipu_clk, 0, MXC_CCM_CCGR5, MXC_CCM_CCGRx_CG5_OFFSET, + NULL, NULL, clk_ipu_enable, clk_ipu_disable, &ahb_clk, &ipu_sec_clk); + +DEFINE_CLOCK_FULL(emi_fast_clk, 0, MXC_CCM_CCGR5, MXC_CCM_CCGRx_CG7_OFFSET, + NULL, NULL, _clk_ccgr_enable, _clk_ccgr_disable_inwait, + &ddr_clk, NULL); + +DEFINE_CLOCK(ipu_di0_clk, 0, MXC_CCM_CCGR6, MXC_CCM_CCGRx_CG5_OFFSET, + NULL, NULL, &pll3_sw_clk, NULL); +DEFINE_CLOCK(ipu_di1_clk, 0, MXC_CCM_CCGR6, MXC_CCM_CCGRx_CG6_OFFSET, + NULL, NULL, &pll3_sw_clk, NULL); + #define _REGISTER_CLOCK(d, n, c) \ { \ .dev_id = d, \ @@ -1155,6 +1291,10 @@ static struct clk_lookup mx51_lookups[] = { _REGISTER_CLOCK(NULL, "iim_clk", iim_clk) _REGISTER_CLOCK("imx2-wdt.0", NULL, dummy_clk) _REGISTER_CLOCK("imx2-wdt.1", NULL, dummy_clk) + _REGISTER_CLOCK(NULL, "mipi_hsp", mipi_hsp_clk) + _REGISTER_CLOCK("imx-ipuv3", NULL, ipu_clk) + _REGISTER_CLOCK("imx-ipuv3", "di0", ipu_di0_clk) + _REGISTER_CLOCK("imx-ipuv3", "di1", ipu_di1_clk) }; static struct clk_lookup mx53_lookups[] = { -- cgit v1.2.3 From 644b1d586d6670262501057ae99d893fadb012de Mon Sep 17 00:00:00 2001 From: Yong Shen Date: Tue, 4 Jan 2011 14:22:55 +0800 Subject: ARM i.MX53: Some bug fix about MX53 MSL code 1. pll_base address should return right value 2. uart parent clk is from pll3 Signed-off-by: Yong Shen Signed-off-by: Sascha Hauer --- arch/arm/mach-mx5/clock-mx51-mx53.c | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) (limited to 'arch/arm/mach-mx5/clock-mx51-mx53.c') diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c index ba9432c8f843..b21bc47d4827 100644 --- a/arch/arm/mach-mx5/clock-mx51-mx53.c +++ b/arch/arm/mach-mx5/clock-mx51-mx53.c @@ -127,7 +127,7 @@ static inline u32 _get_mux(struct clk *parent, struct clk *m0, return -EINVAL; } -static inline void __iomem *_get_pll_base(struct clk *pll) +static inline void __iomem *_mx51_get_pll_base(struct clk *pll) { if (pll == &pll1_main_clk) return MX51_DPLL1_BASE; @@ -135,6 +135,20 @@ static inline void __iomem *_get_pll_base(struct clk *pll) return MX51_DPLL2_BASE; else if (pll == &pll3_sw_clk) return MX51_DPLL3_BASE; + else + BUG(); + + return NULL; +} + +static inline void __iomem *_mx53_get_pll_base(struct clk *pll) +{ + if (pll == &pll1_main_clk) + return MX53_DPLL1_BASE; + else if (pll == &pll2_sw_clk) + return MX53_DPLL2_BASE; + else if (pll == &pll3_sw_clk) + return MX53_DPLL3_BASE; else if (pll == &mx53_pll4_sw_clk) return MX53_DPLL4_BASE; else @@ -143,6 +157,14 @@ static inline void __iomem *_get_pll_base(struct clk *pll) return NULL; } +static inline void __iomem *_get_pll_base(struct clk *pll) +{ + if (cpu_is_mx51()) + return _mx51_get_pll_base(pll); + else + return _mx53_get_pll_base(pll); +} + static unsigned long clk_pll_get_rate(struct clk *clk) { long mfi, mfn, mfd, pdf, ref_clk, mfn_abs; @@ -1341,6 +1363,7 @@ int __init mx51_clocks_init(unsigned long ckil, unsigned long osc, clk_tree_init(); + clk_set_parent(&uart_root_clk, &pll3_sw_clk); clk_enable(&cpu_clk); clk_enable(&main_bus_clk); -- cgit v1.2.3