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path: root/drivers/clk/rockchip/clk_rk3066.c
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Diffstat (limited to 'drivers/clk/rockchip/clk_rk3066.c')
-rw-r--r--drivers/clk/rockchip/clk_rk3066.c717
1 files changed, 717 insertions, 0 deletions
diff --git a/drivers/clk/rockchip/clk_rk3066.c b/drivers/clk/rockchip/clk_rk3066.c
new file mode 100644
index 00000000000..2c12f6e0441
--- /dev/null
+++ b/drivers/clk/rockchip/clk_rk3066.c
@@ -0,0 +1,717 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) Copyright 2015 Google, Inc
+ * (C) Copyright 2016 Heiko Stuebner <heiko@sntech.de>
+ */
+
+#include <bitfield.h>
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <dt-structs.h>
+#include <errno.h>
+#include <log.h>
+#include <malloc.h>
+#include <mapmem.h>
+#include <syscon.h>
+#include <asm/io.h>
+#include <asm/arch-rockchip/clock.h>
+#include <asm/arch-rockchip/cru_rk3066.h>
+#include <asm/arch-rockchip/grf_rk3066.h>
+#include <asm/arch-rockchip/hardware.h>
+#include <dt-bindings/clock/rk3066a-cru.h>
+#include <dm/device_compat.h>
+#include <dm/device-internal.h>
+#include <dm/lists.h>
+#include <dm/uclass-internal.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/log2.h>
+#include <linux/stringify.h>
+
+struct rk3066_clk_plat {
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+ struct dtd_rockchip_rk3066a_cru dtd;
+#endif
+};
+
+struct pll_div {
+ u32 nr;
+ u32 nf;
+ u32 no;
+};
+
+enum {
+ VCO_MAX_HZ = 1416U * 1000000,
+ VCO_MIN_HZ = 300 * 1000000,
+ OUTPUT_MAX_HZ = 1416U * 1000000,
+ OUTPUT_MIN_HZ = 30 * 1000000,
+ FREF_MAX_HZ = 1416U * 1000000,
+ FREF_MIN_HZ = 30 * 1000,
+};
+
+enum {
+ /* PLL CON0 */
+ PLL_OD_MASK = GENMASK(3, 0),
+
+ /* PLL CON1 */
+ PLL_NF_MASK = GENMASK(12, 0),
+
+ /* PLL CON2 */
+ PLL_BWADJ_MASK = GENMASK(11, 0),
+
+ /* PLL CON3 */
+ PLL_RESET_SHIFT = 5,
+
+ /* GRF_SOC_STATUS0 */
+ SOCSTS_DPLL_LOCK = BIT(4),
+ SOCSTS_APLL_LOCK = BIT(5),
+ SOCSTS_CPLL_LOCK = BIT(6),
+ SOCSTS_GPLL_LOCK = BIT(7),
+};
+
+#define DIV_TO_RATE(input_rate, div) ((input_rate) / ((div) + 1))
+
+#define PLL_DIVISORS(hz, _nr, _no) {\
+ .nr = _nr, .nf = (u32)((u64)hz * _nr * _no / OSC_HZ), .no = _no};\
+ _Static_assert(((u64)hz * _nr * _no / OSC_HZ) * OSC_HZ /\
+ (_nr * _no) == hz, #hz "Hz cannot be hit with PLL "\
+ "divisors on line " __stringify(__LINE__))
+
+/* Keep divisors as low as possible to reduce jitter and power usage. */
+static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 2, 2);
+static const struct pll_div cpll_init_cfg = PLL_DIVISORS(CPLL_HZ, 1, 2);
+
+static int rk3066_clk_set_pll(struct rk3066_cru *cru, enum rk_clk_id clk_id,
+ const struct pll_div *div)
+{
+ int pll_id = rk_pll_id(clk_id);
+ struct rk3066_pll *pll = &cru->pll[pll_id];
+ /* All PLLs have the same VCO and output frequency range restrictions. */
+ uint vco_hz = OSC_HZ / 1000 * div->nf / div->nr * 1000;
+ uint output_hz = vco_hz / div->no;
+
+ debug("%s: PLL at %x: nf=%d, nr=%d, no=%d, vco=%u Hz, output=%u Hz\n", __func__,
+ (uint)pll, div->nf, div->nr, div->no, vco_hz, output_hz);
+ assert(vco_hz >= VCO_MIN_HZ && vco_hz <= VCO_MAX_HZ &&
+ output_hz >= OUTPUT_MIN_HZ && output_hz <= OUTPUT_MAX_HZ &&
+ (div->no == 1 || !(div->no % 2)));
+
+ /* Enter reset. */
+ rk_setreg(&pll->con3, BIT(PLL_RESET_SHIFT));
+
+ rk_clrsetreg(&pll->con0,
+ CLKR_MASK | PLL_OD_MASK,
+ ((div->nr - 1) << CLKR_SHIFT) | (div->no - 1));
+ rk_clrsetreg(&pll->con1, CLKF_MASK, div->nf - 1);
+
+ rk_clrsetreg(&pll->con2, PLL_BWADJ_MASK, (div->nf >> 1) - 1);
+
+ /* Exit reset. */
+ rk_clrreg(&pll->con3, BIT(PLL_RESET_SHIFT));
+
+ return 0;
+}
+
+static int rk3066_clk_configure_ddr(struct rk3066_cru *cru, struct rk3066_grf *grf,
+ unsigned int hz)
+{
+ static const struct pll_div dpll_cfg[] = {
+ {.nf = 25, .nr = 2, .no = 1},
+ {.nf = 400, .nr = 9, .no = 2},
+ {.nf = 500, .nr = 9, .no = 2},
+ {.nf = 100, .nr = 3, .no = 1},
+ };
+ int cfg;
+
+ switch (hz) {
+ case 300000000:
+ cfg = 0;
+ break;
+ case 533000000: /* actually 533.3P MHz */
+ cfg = 1;
+ break;
+ case 666000000: /* actually 666.6P MHz */
+ cfg = 2;
+ break;
+ case 800000000:
+ cfg = 3;
+ break;
+ default:
+ debug("%s: unsupported SDRAM frequency", __func__);
+ return -EINVAL;
+ }
+
+ /* Enter PLL slow mode. */
+ rk_clrsetreg(&cru->cru_mode_con, DPLL_MODE_MASK,
+ PLL_MODE_SLOW << DPLL_MODE_SHIFT);
+
+ rk3066_clk_set_pll(cru, CLK_DDR, &dpll_cfg[cfg]);
+
+ /* Wait for PLL lock. */
+ while (!(readl(&grf->soc_status0) & SOCSTS_DPLL_LOCK))
+ udelay(1);
+
+ /* Enter PLL normal mode. */
+ rk_clrsetreg(&cru->cru_mode_con, DPLL_MODE_MASK,
+ PLL_MODE_NORMAL << DPLL_MODE_SHIFT);
+
+ return 0;
+}
+
+static int rk3066_clk_configure_cpu(struct rk3066_cru *cru, struct rk3066_grf *grf,
+ unsigned int hz)
+{
+ static const struct pll_div apll_cfg[] = {
+ {.nf = 50, .nr = 1, .no = 2},
+ {.nf = 59, .nr = 1, .no = 1},
+ };
+ int div_core_peri, div_cpu_aclk, cfg;
+
+ /*
+ * We support two possible frequencies, the safe 600MHz
+ * which will work with default pmic settings and will
+ * be set to get away from the 24MHz default and
+ * the maximum of 1.416Ghz, which boards can set if they
+ * were able to get pmic support for it.
+ */
+ switch (hz) {
+ case APLL_SAFE_HZ:
+ cfg = 0;
+ div_core_peri = 1;
+ div_cpu_aclk = 3;
+ break;
+ case APLL_HZ:
+ cfg = 1;
+ div_core_peri = 2;
+ div_cpu_aclk = 3;
+ break;
+ default:
+ debug("unsupported ARMCLK frequency");
+ return -EINVAL;
+ }
+
+ /* Enter PLL slow mode. */
+ rk_clrsetreg(&cru->cru_mode_con, APLL_MODE_MASK,
+ PLL_MODE_SLOW << APLL_MODE_SHIFT);
+
+ rk3066_clk_set_pll(cru, CLK_ARM, &apll_cfg[cfg]);
+
+ /* Wait for PLL lock. */
+ while (!(readl(&grf->soc_status0) & SOCSTS_APLL_LOCK))
+ udelay(1);
+
+ /* Set divider for peripherals attached to the CPU core. */
+ rk_clrsetreg(&cru->cru_clksel_con[0],
+ CORE_PERI_DIV_MASK,
+ div_core_peri << CORE_PERI_DIV_SHIFT);
+
+ /* Set up dependent divisor for cpu_aclk. */
+ rk_clrsetreg(&cru->cru_clksel_con[1],
+ CPU_ACLK_DIV_MASK,
+ div_cpu_aclk << CPU_ACLK_DIV_SHIFT);
+
+ /* Enter PLL normal mode. */
+ rk_clrsetreg(&cru->cru_mode_con, APLL_MODE_MASK,
+ PLL_MODE_NORMAL << APLL_MODE_SHIFT);
+
+ return hz;
+}
+
+static uint32_t rk3066_clk_pll_get_rate(struct rk3066_cru *cru,
+ enum rk_clk_id clk_id)
+{
+ u32 nr, no, nf;
+ u32 con;
+ int pll_id = rk_pll_id(clk_id);
+ struct rk3066_pll *pll = &cru->pll[pll_id];
+ static u8 clk_shift[CLK_COUNT] = {
+ 0xff, APLL_MODE_SHIFT, DPLL_MODE_SHIFT, CPLL_MODE_SHIFT,
+ GPLL_MODE_SHIFT
+ };
+ uint shift;
+
+ con = readl(&cru->cru_mode_con);
+ shift = clk_shift[clk_id];
+ switch (FIELD_GET(APLL_MODE_MASK, con >> shift)) {
+ case PLL_MODE_SLOW:
+ return OSC_HZ;
+ case PLL_MODE_NORMAL:
+ /* normal mode */
+ con = readl(&pll->con0);
+ no = bitfield_extract_by_mask(con, CLKOD_MASK) + 1;
+ nr = bitfield_extract_by_mask(con, CLKR_MASK) + 1;
+ con = readl(&pll->con1);
+ nf = bitfield_extract_by_mask(con, CLKF_MASK) + 1;
+
+ return (OSC_HZ * nf) / (nr * no);
+ case PLL_MODE_DEEP:
+ default:
+ return 32768;
+ }
+}
+
+static ulong rk3066_clk_mmc_get_clk(struct rk3066_cru *cru, uint gclk_rate,
+ int periph)
+{
+ uint div;
+ u32 con;
+
+ switch (periph) {
+ case HCLK_EMMC:
+ case SCLK_EMMC:
+ con = readl(&cru->cru_clksel_con[12]);
+ div = bitfield_extract_by_mask(con, EMMC_DIV_MASK);
+ break;
+ case HCLK_SDMMC:
+ case SCLK_SDMMC:
+ con = readl(&cru->cru_clksel_con[11]);
+ div = bitfield_extract_by_mask(con, MMC0_DIV_MASK);
+ break;
+ case HCLK_SDIO:
+ case SCLK_SDIO:
+ con = readl(&cru->cru_clksel_con[12]);
+ div = bitfield_extract_by_mask(con, SDIO_DIV_MASK);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return DIV_TO_RATE(gclk_rate, div) / 2;
+}
+
+static ulong rk3066_clk_mmc_set_clk(struct rk3066_cru *cru, uint gclk_rate,
+ int periph, uint freq)
+{
+ int src_clk_div;
+
+ debug("%s: gclk_rate=%u\n", __func__, gclk_rate);
+ /* MMC clock by default divides by 2 internally, so need to provide double in CRU. */
+ src_clk_div = DIV_ROUND_UP(gclk_rate / 2, freq) - 1;
+ assert(src_clk_div <= 0x3f);
+
+ switch (periph) {
+ case HCLK_EMMC:
+ case SCLK_EMMC:
+ rk_clrsetreg(&cru->cru_clksel_con[12],
+ EMMC_DIV_MASK,
+ src_clk_div << EMMC_DIV_SHIFT);
+ break;
+ case HCLK_SDMMC:
+ case SCLK_SDMMC:
+ rk_clrsetreg(&cru->cru_clksel_con[11],
+ MMC0_DIV_MASK,
+ src_clk_div << MMC0_DIV_SHIFT);
+ break;
+ case HCLK_SDIO:
+ case SCLK_SDIO:
+ rk_clrsetreg(&cru->cru_clksel_con[12],
+ SDIO_DIV_MASK,
+ src_clk_div << SDIO_DIV_SHIFT);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return rk3066_clk_mmc_get_clk(cru, gclk_rate, periph);
+}
+
+static ulong rk3066_clk_spi_get_clk(struct rk3066_cru *cru, uint gclk_rate,
+ int periph)
+{
+ uint div;
+ u32 con;
+
+ switch (periph) {
+ case SCLK_SPI0:
+ con = readl(&cru->cru_clksel_con[25]);
+ div = bitfield_extract_by_mask(con, SPI0_DIV_MASK);
+ break;
+ case SCLK_SPI1:
+ con = readl(&cru->cru_clksel_con[25]);
+ div = bitfield_extract_by_mask(con, SPI1_DIV_MASK);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return DIV_TO_RATE(gclk_rate, div);
+}
+
+static ulong rk3066_clk_spi_set_clk(struct rk3066_cru *cru, uint gclk_rate,
+ int periph, uint freq)
+{
+ int src_clk_div = DIV_ROUND_UP(gclk_rate, freq) - 1;
+
+ assert(src_clk_div < 128);
+ switch (periph) {
+ case SCLK_SPI0:
+ assert(src_clk_div <= SPI0_DIV_MASK >> SPI0_DIV_SHIFT);
+ rk_clrsetreg(&cru->cru_clksel_con[25],
+ SPI0_DIV_MASK,
+ src_clk_div << SPI0_DIV_SHIFT);
+ break;
+ case SCLK_SPI1:
+ assert(src_clk_div <= SPI1_DIV_MASK >> SPI1_DIV_SHIFT);
+ rk_clrsetreg(&cru->cru_clksel_con[25],
+ SPI1_DIV_MASK,
+ src_clk_div << SPI1_DIV_SHIFT);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return rk3066_clk_spi_get_clk(cru, gclk_rate, periph);
+}
+
+static ulong rk3066_clk_saradc_get_clk(struct rk3066_cru *cru, int periph)
+{
+ u32 div, con;
+
+ switch (periph) {
+ case SCLK_SARADC:
+ con = readl(&cru->cru_clksel_con[24]);
+ div = bitfield_extract_by_mask(con, SARADC_DIV_MASK);
+ break;
+ case SCLK_TSADC:
+ con = readl(&cru->cru_clksel_con[34]);
+ div = bitfield_extract_by_mask(con, TSADC_DIV_MASK);
+ break;
+ default:
+ return -EINVAL;
+ }
+ return DIV_TO_RATE(PERI_PCLK_HZ, div);
+}
+
+static ulong rk3066_clk_saradc_set_clk(struct rk3066_cru *cru, uint hz,
+ int periph)
+{
+ int src_clk_div;
+
+ src_clk_div = DIV_ROUND_UP(PERI_PCLK_HZ, hz) - 1;
+ assert(src_clk_div < 128);
+
+ switch (periph) {
+ case SCLK_SARADC:
+ rk_clrsetreg(&cru->cru_clksel_con[24],
+ SARADC_DIV_MASK,
+ src_clk_div << SARADC_DIV_SHIFT);
+ break;
+ case SCLK_TSADC:
+ rk_clrsetreg(&cru->cru_clksel_con[34],
+ SARADC_DIV_MASK,
+ src_clk_div << SARADC_DIV_SHIFT);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return rk3066_clk_saradc_get_clk(cru, periph);
+}
+
+static void rk3066_clk_init(struct rk3066_cru *cru, struct rk3066_grf *grf)
+{
+ u32 aclk_div, hclk_div, pclk_div, h2p_div;
+
+ /* Enter PLL slow mode. */
+ rk_clrsetreg(&cru->cru_mode_con,
+ GPLL_MODE_MASK |
+ CPLL_MODE_MASK,
+ PLL_MODE_SLOW << GPLL_MODE_SHIFT |
+ PLL_MODE_SLOW << CPLL_MODE_SHIFT);
+
+ /* Init PLL. */
+ rk3066_clk_set_pll(cru, CLK_GENERAL, &gpll_init_cfg);
+ rk3066_clk_set_pll(cru, CLK_CODEC, &cpll_init_cfg);
+
+ /* Wait for PLL lock. */
+ while ((readl(&grf->soc_status0) &
+ (SOCSTS_CPLL_LOCK | SOCSTS_GPLL_LOCK)) !=
+ (SOCSTS_CPLL_LOCK | SOCSTS_GPLL_LOCK))
+ udelay(1);
+
+ /*
+ * Select CPU clock PLL source and
+ * reparent aclk_cpu_pre from APPL to GPLL.
+ * Set up dependent divisors for PCLK/HCLK and ACLK clocks.
+ */
+ aclk_div = DIV_ROUND_UP(GPLL_HZ, CPU_ACLK_HZ) - 1;
+ assert((aclk_div + 1) * CPU_ACLK_HZ == GPLL_HZ && aclk_div <= 0x1f);
+
+ rk_clrsetreg(&cru->cru_clksel_con[0],
+ CPU_ACLK_PLL_MASK |
+ A9_CORE_DIV_MASK,
+ CPU_ACLK_PLL_SELECT_GPLL << CPU_ACLK_PLL_SHIFT |
+ aclk_div << A9_CORE_DIV_SHIFT);
+
+ hclk_div = ilog2(CPU_ACLK_HZ / CPU_HCLK_HZ);
+ assert((1 << hclk_div) * CPU_HCLK_HZ == CPU_ACLK_HZ && hclk_div < 0x3);
+ pclk_div = ilog2(CPU_ACLK_HZ / CPU_PCLK_HZ);
+ assert((1 << pclk_div) * CPU_PCLK_HZ == CPU_ACLK_HZ && pclk_div < 0x4);
+ h2p_div = ilog2(CPU_HCLK_HZ / CPU_H2P_HZ);
+ assert((1 << h2p_div) * CPU_H2P_HZ == CPU_HCLK_HZ && pclk_div < 0x3);
+
+ rk_clrsetreg(&cru->cru_clksel_con[1],
+ AHB2APB_DIV_MASK |
+ CPU_PCLK_DIV_MASK |
+ CPU_HCLK_DIV_MASK,
+ h2p_div << AHB2APB_DIV_SHIFT |
+ pclk_div << CPU_PCLK_DIV_SHIFT |
+ hclk_div << CPU_HCLK_DIV_SHIFT);
+
+ /*
+ * Select PERI clock PLL source and
+ * set up dependent divisors for PCLK/HCLK and ACLK clocks.
+ */
+ aclk_div = GPLL_HZ / PERI_ACLK_HZ - 1;
+ assert((aclk_div + 1) * PERI_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f);
+
+ hclk_div = ilog2(PERI_ACLK_HZ / PERI_HCLK_HZ);
+ assert((1 << hclk_div) * PERI_HCLK_HZ ==
+ PERI_ACLK_HZ && (hclk_div < 0x4));
+
+ pclk_div = ilog2(PERI_ACLK_HZ / PERI_PCLK_HZ);
+ assert((1 << pclk_div) * PERI_PCLK_HZ ==
+ PERI_ACLK_HZ && (pclk_div < 0x4));
+
+ rk_clrsetreg(&cru->cru_clksel_con[10],
+ PERI_PCLK_DIV_MASK |
+ PERI_HCLK_DIV_MASK |
+ PERI_ACLK_DIV_MASK,
+ PERI_SEL_GPLL << PERI_SEL_PLL_SHIFT |
+ pclk_div << PERI_PCLK_DIV_SHIFT |
+ hclk_div << PERI_HCLK_DIV_SHIFT |
+ aclk_div << PERI_ACLK_DIV_SHIFT);
+
+ /* Enter PLL normal mode. */
+ rk_clrsetreg(&cru->cru_mode_con,
+ GPLL_MODE_MASK |
+ CPLL_MODE_MASK,
+ PLL_MODE_NORMAL << GPLL_MODE_SHIFT |
+ PLL_MODE_NORMAL << CPLL_MODE_SHIFT);
+
+ rk3066_clk_mmc_set_clk(cru, PERI_HCLK_HZ, HCLK_SDMMC, 16000000);
+}
+
+static ulong rk3066_clk_get_rate(struct clk *clk)
+{
+ struct rk3066_clk_priv *priv = dev_get_priv(clk->dev);
+ ulong new_rate, gclk_rate;
+
+ gclk_rate = rk3066_clk_pll_get_rate(priv->cru, CLK_GENERAL);
+ switch (clk->id) {
+ case 1 ... 4:
+ new_rate = rk3066_clk_pll_get_rate(priv->cru, clk->id);
+ break;
+ case HCLK_EMMC:
+ case HCLK_SDMMC:
+ case HCLK_SDIO:
+ case SCLK_EMMC:
+ case SCLK_SDMMC:
+ case SCLK_SDIO:
+ new_rate = rk3066_clk_mmc_get_clk(priv->cru, PERI_HCLK_HZ,
+ clk->id);
+ break;
+ case SCLK_SPI0:
+ case SCLK_SPI1:
+ new_rate = rk3066_clk_spi_get_clk(priv->cru, PERI_PCLK_HZ,
+ clk->id);
+ break;
+ case PCLK_I2C0:
+ case PCLK_I2C1:
+ case PCLK_I2C2:
+ case PCLK_I2C3:
+ case PCLK_I2C4:
+ return gclk_rate;
+ case SCLK_SARADC:
+ case SCLK_TSADC:
+ new_rate = rk3066_clk_saradc_get_clk(priv->cru, clk->id);
+ break;
+ case SCLK_TIMER0:
+ case SCLK_TIMER1:
+ case SCLK_TIMER2:
+ case SCLK_UART0:
+ case SCLK_UART1:
+ case SCLK_UART2:
+ case SCLK_UART3:
+ return OSC_HZ;
+ default:
+ return -ENOENT;
+ }
+
+ return new_rate;
+}
+
+static ulong rk3066_clk_set_rate(struct clk *clk, ulong rate)
+{
+ struct rk3066_clk_priv *priv = dev_get_priv(clk->dev);
+ struct rk3066_cru *cru = priv->cru;
+ ulong new_rate;
+
+ switch (clk->id) {
+ case PLL_APLL:
+ new_rate = rk3066_clk_configure_cpu(priv->cru, priv->grf, rate);
+ break;
+ case CLK_DDR:
+ new_rate = rk3066_clk_configure_ddr(priv->cru, priv->grf, rate);
+ break;
+ case HCLK_EMMC:
+ case HCLK_SDMMC:
+ case HCLK_SDIO:
+ case SCLK_EMMC:
+ case SCLK_SDMMC:
+ case SCLK_SDIO:
+ new_rate = rk3066_clk_mmc_set_clk(cru, PERI_HCLK_HZ,
+ clk->id, rate);
+ break;
+ case SCLK_SPI0:
+ case SCLK_SPI1:
+ new_rate = rk3066_clk_spi_set_clk(cru, PERI_PCLK_HZ,
+ clk->id, rate);
+ break;
+ case SCLK_SARADC:
+ case SCLK_TSADC:
+ new_rate = rk3066_clk_saradc_set_clk(cru, rate, clk->id);
+ break;
+ case PLL_CPLL:
+ case PLL_GPLL:
+ case ACLK_CPU:
+ case HCLK_CPU:
+ case PCLK_CPU:
+ case ACLK_PERI:
+ case HCLK_PERI:
+ case PCLK_PERI:
+ return 0;
+ default:
+ return -ENOENT;
+ }
+
+ return new_rate;
+}
+
+static int rk3066_clk_enable(struct clk *clk)
+{
+ struct rk3066_clk_priv *priv = dev_get_priv(clk->dev);
+
+ switch (clk->id) {
+ case HCLK_NANDC0:
+ rk_clrreg(&priv->cru->cru_clkgate_con[5], BIT(9));
+ break;
+ case HCLK_SDMMC:
+ rk_clrreg(&priv->cru->cru_clkgate_con[5], BIT(10));
+ break;
+ case HCLK_SDIO:
+ rk_clrreg(&priv->cru->cru_clkgate_con[5], BIT(11));
+ break;
+ }
+
+ return 0;
+}
+
+static int rk3066_clk_disable(struct clk *clk)
+{
+ struct rk3066_clk_priv *priv = dev_get_priv(clk->dev);
+
+ switch (clk->id) {
+ case HCLK_NANDC0:
+ rk_setreg(&priv->cru->cru_clkgate_con[5], BIT(9));
+ break;
+ case HCLK_SDMMC:
+ rk_setreg(&priv->cru->cru_clkgate_con[5], BIT(10));
+ break;
+ case HCLK_SDIO:
+ rk_setreg(&priv->cru->cru_clkgate_con[5], BIT(11));
+ break;
+ }
+
+ return 0;
+}
+
+static struct clk_ops rk3066_clk_ops = {
+ .disable = rk3066_clk_disable,
+ .enable = rk3066_clk_enable,
+ .get_rate = rk3066_clk_get_rate,
+ .set_rate = rk3066_clk_set_rate,
+};
+
+static int rk3066_clk_of_to_plat(struct udevice *dev)
+{
+ if (CONFIG_IS_ENABLED(OF_REAL)) {
+ struct rk3066_clk_priv *priv = dev_get_priv(dev);
+
+ priv->cru = dev_read_addr_ptr(dev);
+ }
+
+ return 0;
+}
+
+static int rk3066_clk_probe(struct udevice *dev)
+{
+ struct rk3066_clk_priv *priv = dev_get_priv(dev);
+
+ priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
+ if (IS_ERR(priv->grf))
+ return PTR_ERR(priv->grf);
+
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+ struct rk3066_clk_plat *plat = dev_get_plat(dev);
+
+ priv->cru = map_sysmem(plat->dtd.reg[0], plat->dtd.reg[1]);
+#endif
+
+ if (IS_ENABLED(CONFIG_TPL_BUILD)) {
+ rk3066_clk_init(priv->cru, priv->grf);
+
+ /* Init CPU frequency. */
+ rk3066_clk_configure_cpu(priv->cru, priv->grf, APLL_SAFE_HZ);
+ }
+
+ return 0;
+}
+
+static int rk3066_clk_bind(struct udevice *dev)
+{
+ struct udevice *sys_child;
+ struct sysreset_reg *priv;
+ int reg_offset, ret;
+
+ /* The reset driver does not have a device node, so bind it here. */
+ ret = device_bind(dev, DM_DRIVER_GET(sysreset_rockchip), "sysreset",
+ NULL, ofnode_null(), &sys_child);
+ if (ret) {
+ dev_dbg(dev, "Warning: No sysreset driver: ret=%d\n", ret);
+ } else {
+ priv = malloc(sizeof(struct sysreset_reg));
+ priv->glb_srst_fst_value = offsetof(struct rk3066_cru,
+ cru_glb_srst_fst_value);
+ priv->glb_srst_snd_value = offsetof(struct rk3066_cru,
+ cru_glb_srst_snd_value);
+ dev_set_priv(sys_child, priv);
+ }
+
+ if (CONFIG_IS_ENABLED(RESET_ROCKCHIP)) {
+ reg_offset = offsetof(struct rk3066_cru, cru_softrst_con[0]);
+ ret = rockchip_reset_bind(dev, reg_offset, 9);
+ if (ret)
+ dev_dbg(dev, "Warning: software reset driver bind failed\n");
+ }
+
+ return 0;
+}
+
+static const struct udevice_id rk3066_clk_ids[] = {
+ { .compatible = "rockchip,rk3066a-cru" },
+ { }
+};
+
+U_BOOT_DRIVER(rockchip_rk3066a_cru) = {
+ .name = "rockchip_rk3066a_cru",
+ .id = UCLASS_CLK,
+ .ops = &rk3066_clk_ops,
+ .probe = rk3066_clk_probe,
+ .bind = rk3066_clk_bind,
+ .of_match = rk3066_clk_ids,
+ .of_to_plat = rk3066_clk_of_to_plat,
+ .priv_auto = sizeof(struct rk3066_clk_priv),
+ .plat_auto = sizeof(struct rk3066_clk_plat),
+};
generated by cgit v1.2.3 (git 2.0.4) at 2025-11-03 01:20:04 +0000