diff options
Diffstat (limited to 'drivers/clk/rockchip/clk_rk3399.c')
| -rw-r--r-- | drivers/clk/rockchip/clk_rk3399.c | 819 |
1 files changed, 819 insertions, 0 deletions
diff --git a/drivers/clk/rockchip/clk_rk3399.c b/drivers/clk/rockchip/clk_rk3399.c new file mode 100644 index 0000000..c0bb80c --- /dev/null +++ b/drivers/clk/rockchip/clk_rk3399.c @@ -0,0 +1,819 @@ +/* + * (C) Copyright 2015 Google, Inc + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include <common.h> +#include <clk-uclass.h> +#include <dm.h> +#include <errno.h> +#include <syscon.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/cru_rk3399.h> +#include <asm/arch/hardware.h> +#include <dm/lists.h> +#include <dt-bindings/clock/rk3399-cru.h> + +DECLARE_GLOBAL_DATA_PTR; + +struct rk3399_clk_priv { + struct rk3399_cru *cru; + ulong rate; +}; + +struct pll_div { + u32 refdiv; + u32 fbdiv; + u32 postdiv1; + u32 postdiv2; + u32 frac; +}; + +#define RATE_TO_DIV(input_rate, output_rate) \ + ((input_rate) / (output_rate) - 1); +#define DIV_TO_RATE(input_rate, div) ((input_rate) / ((div) + 1)) + +#define PLL_DIVISORS(hz, _refdiv, _postdiv1, _postdiv2) {\ + .refdiv = _refdiv,\ + .fbdiv = (u32)((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ),\ + .postdiv1 = _postdiv1, .postdiv2 = _postdiv2}; + +static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 2, 2, 1); +static const struct pll_div cpll_init_cfg = PLL_DIVISORS(CPLL_HZ, 1, 2, 2); +static const struct pll_div ppll_init_cfg = PLL_DIVISORS(PPLL_HZ, 2, 2, 1); + +static const struct pll_div apll_l_1600_cfg = PLL_DIVISORS(1600*MHz, 3, 1, 1); +static const struct pll_div apll_l_600_cfg = PLL_DIVISORS(600*MHz, 1, 2, 1); + +static const struct pll_div *apll_l_cfgs[] = { + [APLL_L_1600_MHZ] = &apll_l_1600_cfg, + [APLL_L_600_MHZ] = &apll_l_600_cfg, +}; + +enum { + /* PLL_CON0 */ + PLL_FBDIV_MASK = 0xfff, + PLL_FBDIV_SHIFT = 0, + + /* PLL_CON1 */ + PLL_POSTDIV2_SHIFT = 12, + PLL_POSTDIV2_MASK = 0x7 << PLL_POSTDIV2_SHIFT, + PLL_POSTDIV1_SHIFT = 8, + PLL_POSTDIV1_MASK = 0x7 << PLL_POSTDIV1_SHIFT, + PLL_REFDIV_MASK = 0x3f, + PLL_REFDIV_SHIFT = 0, + + /* PLL_CON2 */ + PLL_LOCK_STATUS_SHIFT = 31, + PLL_LOCK_STATUS_MASK = 1 << PLL_LOCK_STATUS_SHIFT, + PLL_FRACDIV_MASK = 0xffffff, + PLL_FRACDIV_SHIFT = 0, + + /* PLL_CON3 */ + PLL_MODE_SHIFT = 8, + PLL_MODE_MASK = 3 << PLL_MODE_SHIFT, + PLL_MODE_SLOW = 0, + PLL_MODE_NORM, + PLL_MODE_DEEP, + PLL_DSMPD_SHIFT = 3, + PLL_DSMPD_MASK = 1 << PLL_DSMPD_SHIFT, + PLL_INTEGER_MODE = 1, + + /* PMUCRU_CLKSEL_CON0 */ + PMU_PCLK_DIV_CON_MASK = 0x1f, + PMU_PCLK_DIV_CON_SHIFT = 0, + + /* PMUCRU_CLKSEL_CON1 */ + SPI3_PLL_SEL_SHIFT = 7, + SPI3_PLL_SEL_MASK = 1 << SPI3_PLL_SEL_SHIFT, + SPI3_PLL_SEL_24M = 0, + SPI3_PLL_SEL_PPLL = 1, + SPI3_DIV_CON_SHIFT = 0x0, + SPI3_DIV_CON_MASK = 0x7f, + + /* PMUCRU_CLKSEL_CON2 */ + I2C_DIV_CON_MASK = 0x7f, + I2C8_DIV_CON_SHIFT = 8, + I2C0_DIV_CON_SHIFT = 0, + + /* PMUCRU_CLKSEL_CON3 */ + I2C4_DIV_CON_SHIFT = 0, + + /* CLKSEL_CON0 */ + ACLKM_CORE_L_DIV_CON_SHIFT = 8, + ACLKM_CORE_L_DIV_CON_MASK = 0x1f << ACLKM_CORE_L_DIV_CON_SHIFT, + CLK_CORE_L_PLL_SEL_SHIFT = 6, + CLK_CORE_L_PLL_SEL_MASK = 3 << CLK_CORE_L_PLL_SEL_SHIFT, + CLK_CORE_L_PLL_SEL_ALPLL = 0x0, + CLK_CORE_L_PLL_SEL_ABPLL = 0x1, + CLK_CORE_L_PLL_SEL_DPLL = 0x10, + CLK_CORE_L_PLL_SEL_GPLL = 0x11, + CLK_CORE_L_DIV_MASK = 0x1f, + CLK_CORE_L_DIV_SHIFT = 0, + + /* CLKSEL_CON1 */ + PCLK_DBG_L_DIV_SHIFT = 0x8, + PCLK_DBG_L_DIV_MASK = 0x1f << PCLK_DBG_L_DIV_SHIFT, + ATCLK_CORE_L_DIV_SHIFT = 0, + ATCLK_CORE_L_DIV_MASK = 0x1f << ATCLK_CORE_L_DIV_SHIFT, + + /* CLKSEL_CON14 */ + PCLK_PERIHP_DIV_CON_SHIFT = 12, + PCLK_PERIHP_DIV_CON_MASK = 0x7 << PCLK_PERIHP_DIV_CON_SHIFT, + HCLK_PERIHP_DIV_CON_SHIFT = 8, + HCLK_PERIHP_DIV_CON_MASK = 3 << HCLK_PERIHP_DIV_CON_SHIFT, + ACLK_PERIHP_PLL_SEL_SHIFT = 7, + ACLK_PERIHP_PLL_SEL_MASK = 1 << ACLK_PERIHP_PLL_SEL_SHIFT, + ACLK_PERIHP_PLL_SEL_CPLL = 0, + ACLK_PERIHP_PLL_SEL_GPLL = 1, + ACLK_PERIHP_DIV_CON_SHIFT = 0, + ACLK_PERIHP_DIV_CON_MASK = 0x1f, + + /* CLKSEL_CON21 */ + ACLK_EMMC_PLL_SEL_SHIFT = 7, + ACLK_EMMC_PLL_SEL_MASK = 0x1 << ACLK_EMMC_PLL_SEL_SHIFT, + ACLK_EMMC_PLL_SEL_GPLL = 0x1, + ACLK_EMMC_DIV_CON_SHIFT = 0, + ACLK_EMMC_DIV_CON_MASK = 0x1f, + + /* CLKSEL_CON22 */ + CLK_EMMC_PLL_SHIFT = 8, + CLK_EMMC_PLL_MASK = 0x7 << CLK_EMMC_PLL_SHIFT, + CLK_EMMC_PLL_SEL_GPLL = 0x1, + CLK_EMMC_DIV_CON_SHIFT = 0, + CLK_EMMC_DIV_CON_MASK = 0x7f << CLK_EMMC_DIV_CON_SHIFT, + + /* CLKSEL_CON23 */ + PCLK_PERILP0_DIV_CON_SHIFT = 12, + PCLK_PERILP0_DIV_CON_MASK = 0x7 << PCLK_PERILP0_DIV_CON_SHIFT, + HCLK_PERILP0_DIV_CON_SHIFT = 8, + HCLK_PERILP0_DIV_CON_MASK = 3 << HCLK_PERILP0_DIV_CON_SHIFT, + ACLK_PERILP0_PLL_SEL_SHIFT = 7, + ACLK_PERILP0_PLL_SEL_MASK = 1 << ACLK_PERILP0_PLL_SEL_SHIFT, + ACLK_PERILP0_PLL_SEL_CPLL = 0, + ACLK_PERILP0_PLL_SEL_GPLL = 1, + ACLK_PERILP0_DIV_CON_SHIFT = 0, + ACLK_PERILP0_DIV_CON_MASK = 0x1f, + + /* CLKSEL_CON25 */ + PCLK_PERILP1_DIV_CON_SHIFT = 8, + PCLK_PERILP1_DIV_CON_MASK = 0x7 << PCLK_PERILP1_DIV_CON_SHIFT, + HCLK_PERILP1_PLL_SEL_SHIFT = 7, + HCLK_PERILP1_PLL_SEL_MASK = 1 << HCLK_PERILP1_PLL_SEL_SHIFT, + HCLK_PERILP1_PLL_SEL_CPLL = 0, + HCLK_PERILP1_PLL_SEL_GPLL = 1, + HCLK_PERILP1_DIV_CON_SHIFT = 0, + HCLK_PERILP1_DIV_CON_MASK = 0x1f, + + /* CLKSEL_CON26 */ + CLK_SARADC_DIV_CON_SHIFT = 8, + CLK_SARADC_DIV_CON_MASK = 0xff << CLK_SARADC_DIV_CON_SHIFT, + + /* CLKSEL_CON27 */ + CLK_TSADC_SEL_X24M = 0x0, + CLK_TSADC_SEL_SHIFT = 15, + CLK_TSADC_SEL_MASK = 1 << CLK_TSADC_SEL_SHIFT, + CLK_TSADC_DIV_CON_SHIFT = 0, + CLK_TSADC_DIV_CON_MASK = 0x3ff, + + /* CLKSEL_CON47 & CLKSEL_CON48 */ + ACLK_VOP_PLL_SEL_SHIFT = 6, + ACLK_VOP_PLL_SEL_MASK = 0x3 << ACLK_VOP_PLL_SEL_SHIFT, + ACLK_VOP_PLL_SEL_CPLL = 0x1, + ACLK_VOP_DIV_CON_SHIFT = 0, + ACLK_VOP_DIV_CON_MASK = 0x1f << ACLK_VOP_DIV_CON_SHIFT, + + /* CLKSEL_CON49 & CLKSEL_CON50 */ + DCLK_VOP_DCLK_SEL_SHIFT = 11, + DCLK_VOP_DCLK_SEL_MASK = 1 << DCLK_VOP_DCLK_SEL_SHIFT, + DCLK_VOP_DCLK_SEL_DIVOUT = 0, + DCLK_VOP_PLL_SEL_SHIFT = 8, + DCLK_VOP_PLL_SEL_MASK = 3 << DCLK_VOP_PLL_SEL_SHIFT, + DCLK_VOP_PLL_SEL_VPLL = 0, + DCLK_VOP_DIV_CON_MASK = 0xff, + DCLK_VOP_DIV_CON_SHIFT = 0, + + /* CLKSEL_CON58 */ + CLK_SPI_PLL_SEL_MASK = 1, + CLK_SPI_PLL_SEL_CPLL = 0, + CLK_SPI_PLL_SEL_GPLL = 1, + CLK_SPI_PLL_DIV_CON_MASK = 0x7f, + CLK_SPI5_PLL_DIV_CON_SHIFT = 8, + CLK_SPI5_PLL_SEL_SHIFT = 15, + + /* CLKSEL_CON59 */ + CLK_SPI1_PLL_SEL_SHIFT = 15, + CLK_SPI1_PLL_DIV_CON_SHIFT = 8, + CLK_SPI0_PLL_SEL_SHIFT = 7, + CLK_SPI0_PLL_DIV_CON_SHIFT = 0, + + /* CLKSEL_CON60 */ + CLK_SPI4_PLL_SEL_SHIFT = 15, + CLK_SPI4_PLL_DIV_CON_SHIFT = 8, + CLK_SPI2_PLL_SEL_SHIFT = 7, + CLK_SPI2_PLL_DIV_CON_SHIFT = 0, + + /* CLKSEL_CON61 */ + CLK_I2C_PLL_SEL_MASK = 1, + CLK_I2C_PLL_SEL_CPLL = 0, + CLK_I2C_PLL_SEL_GPLL = 1, + CLK_I2C5_PLL_SEL_SHIFT = 15, + CLK_I2C5_DIV_CON_SHIFT = 8, + CLK_I2C1_PLL_SEL_SHIFT = 7, + CLK_I2C1_DIV_CON_SHIFT = 0, + + /* CLKSEL_CON62 */ + CLK_I2C6_PLL_SEL_SHIFT = 15, + CLK_I2C6_DIV_CON_SHIFT = 8, + CLK_I2C2_PLL_SEL_SHIFT = 7, + CLK_I2C2_DIV_CON_SHIFT = 0, + + /* CLKSEL_CON63 */ + CLK_I2C7_PLL_SEL_SHIFT = 15, + CLK_I2C7_DIV_CON_SHIFT = 8, + CLK_I2C3_PLL_SEL_SHIFT = 7, + CLK_I2C3_DIV_CON_SHIFT = 0, + + /* CRU_SOFTRST_CON4 */ + RESETN_DDR0_REQ_SHIFT = 8, + RESETN_DDR0_REQ_MASK = 1 << RESETN_DDR0_REQ_SHIFT, + RESETN_DDRPHY0_REQ_SHIFT = 9, + RESETN_DDRPHY0_REQ_MASK = 1 << RESETN_DDRPHY0_REQ_SHIFT, + RESETN_DDR1_REQ_SHIFT = 12, + RESETN_DDR1_REQ_MASK = 1 << RESETN_DDR1_REQ_SHIFT, + RESETN_DDRPHY1_REQ_SHIFT = 13, + RESETN_DDRPHY1_REQ_MASK = 1 << RESETN_DDRPHY1_REQ_SHIFT, +}; + +#define VCO_MAX_KHZ (3200 * (MHz / KHz)) +#define VCO_MIN_KHZ (800 * (MHz / KHz)) +#define OUTPUT_MAX_KHZ (3200 * (MHz / KHz)) +#define OUTPUT_MIN_KHZ (16 * (MHz / KHz)) + +/* + * the div restructions of pll in integer mode, these are defined in + * * CRU_*PLL_CON0 or PMUCRU_*PLL_CON0 + */ +#define PLL_DIV_MIN 16 +#define PLL_DIV_MAX 3200 + +/* + * How to calculate the PLL(from TRM V0.3 Part 1 Page 63): + * Formulas also embedded within the Fractional PLL Verilog model: + * If DSMPD = 1 (DSM is disabled, "integer mode") + * FOUTVCO = FREF / REFDIV * FBDIV + * FOUTPOSTDIV = FOUTVCO / POSTDIV1 / POSTDIV2 + * Where: + * FOUTVCO = Fractional PLL non-divided output frequency + * FOUTPOSTDIV = Fractional PLL divided output frequency + * (output of second post divider) + * FREF = Fractional PLL input reference frequency, (the OSC_HZ 24MHz input) + * REFDIV = Fractional PLL input reference clock divider + * FBDIV = Integer value programmed into feedback divide + * + */ +static void rkclk_set_pll(u32 *pll_con, const struct pll_div *div) +{ + /* All 8 PLLs have same VCO and output frequency range restrictions. */ + u32 vco_khz = OSC_HZ / 1000 * div->fbdiv / div->refdiv; + u32 output_khz = vco_khz / div->postdiv1 / div->postdiv2; + + debug("PLL at %p: fbdiv=%d, refdiv=%d, postdiv1=%d, " + "postdiv2=%d, vco=%u khz, output=%u khz\n", + pll_con, div->fbdiv, div->refdiv, div->postdiv1, + div->postdiv2, vco_khz, output_khz); + assert(vco_khz >= VCO_MIN_KHZ && vco_khz <= VCO_MAX_KHZ && + output_khz >= OUTPUT_MIN_KHZ && output_khz <= OUTPUT_MAX_KHZ && + div->fbdiv >= PLL_DIV_MIN && div->fbdiv <= PLL_DIV_MAX); + + /* + * When power on or changing PLL setting, + * we must force PLL into slow mode to ensure output stable clock. + */ + rk_clrsetreg(&pll_con[3], PLL_MODE_MASK, + PLL_MODE_SLOW << PLL_MODE_SHIFT); + + /* use integer mode */ + rk_clrsetreg(&pll_con[3], PLL_DSMPD_MASK, + PLL_INTEGER_MODE << PLL_DSMPD_SHIFT); + + rk_clrsetreg(&pll_con[0], PLL_FBDIV_MASK, + div->fbdiv << PLL_FBDIV_SHIFT); + rk_clrsetreg(&pll_con[1], + PLL_POSTDIV2_MASK | PLL_POSTDIV1_MASK | + PLL_REFDIV_MASK | PLL_REFDIV_SHIFT, + (div->postdiv2 << PLL_POSTDIV2_SHIFT) | + (div->postdiv1 << PLL_POSTDIV1_SHIFT) | + (div->refdiv << PLL_REFDIV_SHIFT)); + + /* waiting for pll lock */ + while (!(readl(&pll_con[2]) & (1 << PLL_LOCK_STATUS_SHIFT))) + udelay(1); + + /* pll enter normal mode */ + rk_clrsetreg(&pll_con[3], PLL_MODE_MASK, + PLL_MODE_NORM << PLL_MODE_SHIFT); +} + +static int pll_para_config(u32 freq_hz, struct pll_div *div) +{ + u32 ref_khz = OSC_HZ / KHz, refdiv, fbdiv = 0; + u32 postdiv1, postdiv2 = 1; + u32 fref_khz; + u32 diff_khz, best_diff_khz; + const u32 max_refdiv = 63, max_fbdiv = 3200, min_fbdiv = 16; + const u32 max_postdiv1 = 7, max_postdiv2 = 7; + u32 vco_khz; + u32 freq_khz = freq_hz / KHz; + + if (!freq_hz) { + printf("%s: the frequency can't be 0 Hz\n", __func__); + return -1; + } + + postdiv1 = DIV_ROUND_UP(VCO_MIN_KHZ, freq_khz); + if (postdiv1 > max_postdiv1) { + postdiv2 = DIV_ROUND_UP(postdiv1, max_postdiv1); + postdiv1 = DIV_ROUND_UP(postdiv1, postdiv2); + } + + vco_khz = freq_khz * postdiv1 * postdiv2; + + if (vco_khz < VCO_MIN_KHZ || vco_khz > VCO_MAX_KHZ || + postdiv2 > max_postdiv2) { + printf("%s: Cannot find out a supported VCO" + " for Frequency (%uHz).\n", __func__, freq_hz); + return -1; + } + + div->postdiv1 = postdiv1; + div->postdiv2 = postdiv2; + + best_diff_khz = vco_khz; + for (refdiv = 1; refdiv < max_refdiv && best_diff_khz; refdiv++) { + fref_khz = ref_khz / refdiv; + + fbdiv = vco_khz / fref_khz; + if ((fbdiv >= max_fbdiv) || (fbdiv <= min_fbdiv)) + continue; + diff_khz = vco_khz - fbdiv * fref_khz; + if (fbdiv + 1 < max_fbdiv && diff_khz > fref_khz / 2) { + fbdiv++; + diff_khz = fref_khz - diff_khz; + } + + if (diff_khz >= best_diff_khz) + continue; + + best_diff_khz = diff_khz; + div->refdiv = refdiv; + div->fbdiv = fbdiv; + } + + if (best_diff_khz > 4 * (MHz/KHz)) { + printf("%s: Failed to match output frequency %u, " + "difference is %u Hz,exceed 4MHZ\n", __func__, freq_hz, + best_diff_khz * KHz); + return -1; + } + return 0; +} + +static void rkclk_init(struct rk3399_cru *cru) +{ + u32 aclk_div; + u32 hclk_div; + u32 pclk_div; + + /* + * some cru registers changed by bootrom, we'd better reset them to + * reset/default values described in TRM to avoid confusion in kernel. + * Please consider these three lines as a fix of bootrom bug. + */ + rk_clrsetreg(&cru->clksel_con[12], 0xffff, 0x4101); + rk_clrsetreg(&cru->clksel_con[19], 0xffff, 0x033f); + rk_clrsetreg(&cru->clksel_con[56], 0x0003, 0x0003); + + /* configure gpll cpll */ + rkclk_set_pll(&cru->gpll_con[0], &gpll_init_cfg); + rkclk_set_pll(&cru->cpll_con[0], &cpll_init_cfg); + + /* configure perihp aclk, hclk, pclk */ + aclk_div = GPLL_HZ / PERIHP_ACLK_HZ - 1; + assert((aclk_div + 1) * PERIHP_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f); + + hclk_div = PERIHP_ACLK_HZ / PERIHP_HCLK_HZ - 1; + assert((hclk_div + 1) * PERIHP_HCLK_HZ == + PERIHP_ACLK_HZ && (hclk_div < 0x4)); + + pclk_div = PERIHP_ACLK_HZ / PERIHP_PCLK_HZ - 1; + assert((pclk_div + 1) * PERIHP_PCLK_HZ == + PERIHP_ACLK_HZ && (pclk_div < 0x7)); + + rk_clrsetreg(&cru->clksel_con[14], + PCLK_PERIHP_DIV_CON_MASK | HCLK_PERIHP_DIV_CON_MASK | + ACLK_PERIHP_PLL_SEL_MASK | ACLK_PERIHP_DIV_CON_MASK, + pclk_div << PCLK_PERIHP_DIV_CON_SHIFT | + hclk_div << HCLK_PERIHP_DIV_CON_SHIFT | + ACLK_PERIHP_PLL_SEL_GPLL << ACLK_PERIHP_PLL_SEL_SHIFT | + aclk_div << ACLK_PERIHP_DIV_CON_SHIFT); + + /* configure perilp0 aclk, hclk, pclk */ + aclk_div = GPLL_HZ / PERILP0_ACLK_HZ - 1; + assert((aclk_div + 1) * PERILP0_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f); + + hclk_div = PERILP0_ACLK_HZ / PERILP0_HCLK_HZ - 1; + assert((hclk_div + 1) * PERILP0_HCLK_HZ == + PERILP0_ACLK_HZ && (hclk_div < 0x4)); + + pclk_div = PERILP0_ACLK_HZ / PERILP0_PCLK_HZ - 1; + assert((pclk_div + 1) * PERILP0_PCLK_HZ == + PERILP0_ACLK_HZ && (pclk_div < 0x7)); + + rk_clrsetreg(&cru->clksel_con[23], + PCLK_PERILP0_DIV_CON_MASK | HCLK_PERILP0_DIV_CON_MASK | + ACLK_PERILP0_PLL_SEL_MASK | ACLK_PERILP0_DIV_CON_MASK, + pclk_div << PCLK_PERILP0_DIV_CON_SHIFT | + hclk_div << HCLK_PERILP0_DIV_CON_SHIFT | + ACLK_PERILP0_PLL_SEL_GPLL << ACLK_PERILP0_PLL_SEL_SHIFT | + aclk_div << ACLK_PERILP0_DIV_CON_SHIFT); + + /* perilp1 hclk select gpll as source */ + hclk_div = GPLL_HZ / PERILP1_HCLK_HZ - 1; + assert((hclk_div + 1) * PERILP1_HCLK_HZ == + GPLL_HZ && (hclk_div < 0x1f)); + + pclk_div = PERILP1_HCLK_HZ / PERILP1_HCLK_HZ - 1; + assert((pclk_div + 1) * PERILP1_HCLK_HZ == + PERILP1_HCLK_HZ && (hclk_div < 0x7)); + + rk_clrsetreg(&cru->clksel_con[25], + PCLK_PERILP1_DIV_CON_MASK | HCLK_PERILP1_DIV_CON_MASK | + HCLK_PERILP1_PLL_SEL_MASK, + pclk_div << PCLK_PERILP1_DIV_CON_SHIFT | + hclk_div << HCLK_PERILP1_DIV_CON_SHIFT | + HCLK_PERILP1_PLL_SEL_GPLL << HCLK_PERILP1_PLL_SEL_SHIFT); +} + +void rk3399_configure_cpu(struct rk3399_cru *cru, + enum apll_l_frequencies apll_l_freq) +{ + u32 aclkm_div; + u32 pclk_dbg_div; + u32 atclk_div; + + rkclk_set_pll(&cru->apll_l_con[0], apll_l_cfgs[apll_l_freq]); + + aclkm_div = APLL_HZ / ACLKM_CORE_HZ - 1; + assert((aclkm_div + 1) * ACLKM_CORE_HZ == APLL_HZ && + aclkm_div < 0x1f); + + pclk_dbg_div = APLL_HZ / PCLK_DBG_HZ - 1; + assert((pclk_dbg_div + 1) * PCLK_DBG_HZ == APLL_HZ && + pclk_dbg_div < 0x1f); + + atclk_div = APLL_HZ / ATCLK_CORE_HZ - 1; + assert((atclk_div + 1) * ATCLK_CORE_HZ == APLL_HZ && + atclk_div < 0x1f); + + rk_clrsetreg(&cru->clksel_con[0], + ACLKM_CORE_L_DIV_CON_MASK | CLK_CORE_L_PLL_SEL_MASK | + CLK_CORE_L_DIV_MASK, + aclkm_div << ACLKM_CORE_L_DIV_CON_SHIFT | + CLK_CORE_L_PLL_SEL_ALPLL << CLK_CORE_L_PLL_SEL_SHIFT | + 0 << CLK_CORE_L_DIV_SHIFT); + + rk_clrsetreg(&cru->clksel_con[1], + PCLK_DBG_L_DIV_MASK | ATCLK_CORE_L_DIV_MASK, + pclk_dbg_div << PCLK_DBG_L_DIV_SHIFT | + atclk_div << ATCLK_CORE_L_DIV_SHIFT); +} +#define I2C_CLK_REG_MASK(bus) \ + (I2C_DIV_CON_MASK << \ + CLK_I2C ##bus## _DIV_CON_SHIFT | \ + CLK_I2C_PLL_SEL_MASK << \ + CLK_I2C ##bus## _PLL_SEL_SHIFT) + +#define I2C_CLK_REG_VALUE(bus, clk_div) \ + ((clk_div - 1) << \ + CLK_I2C ##bus## _DIV_CON_SHIFT | \ + CLK_I2C_PLL_SEL_GPLL << \ + CLK_I2C ##bus## _PLL_SEL_SHIFT) + +#define I2C_CLK_DIV_VALUE(con, bus) \ + (con >> CLK_I2C ##bus## _DIV_CON_SHIFT) & \ + I2C_DIV_CON_MASK; + +static ulong rk3399_i2c_get_clk(struct rk3399_cru *cru, ulong clk_id) +{ + u32 div, con; + + switch (clk_id) { + case SCLK_I2C1: + con = readl(&cru->clksel_con[61]); + div = I2C_CLK_DIV_VALUE(con, 1); + break; + case SCLK_I2C2: + con = readl(&cru->clksel_con[62]); + div = I2C_CLK_DIV_VALUE(con, 2); + break; + case SCLK_I2C3: + con = readl(&cru->clksel_con[63]); + div = I2C_CLK_DIV_VALUE(con, 3); + break; + case SCLK_I2C5: + con = readl(&cru->clksel_con[61]); + div = I2C_CLK_DIV_VALUE(con, 5); + break; + case SCLK_I2C6: + con = readl(&cru->clksel_con[62]); + div = I2C_CLK_DIV_VALUE(con, 6); + break; + case SCLK_I2C7: + con = readl(&cru->clksel_con[63]); + div = I2C_CLK_DIV_VALUE(con, 7); + break; + default: + printf("do not support this i2c bus\n"); + return -EINVAL; + } + + return DIV_TO_RATE(GPLL_HZ, div); +} + +static ulong rk3399_i2c_set_clk(struct rk3399_cru *cru, ulong clk_id, uint hz) +{ + int src_clk_div; + + /* i2c0,4,8 src clock from ppll, i2c1,2,3,5,6,7 src clock from gpll*/ + src_clk_div = GPLL_HZ / hz; + assert(src_clk_div - 1 < 127); + + switch (clk_id) { + case SCLK_I2C1: + rk_clrsetreg(&cru->clksel_con[61], I2C_CLK_REG_MASK(1), + I2C_CLK_REG_VALUE(1, src_clk_div)); + break; + case SCLK_I2C2: + rk_clrsetreg(&cru->clksel_con[62], I2C_CLK_REG_MASK(2), + I2C_CLK_REG_VALUE(2, src_clk_div)); + break; + case SCLK_I2C3: + rk_clrsetreg(&cru->clksel_con[63], I2C_CLK_REG_MASK(3), + I2C_CLK_REG_VALUE(3, src_clk_div)); + break; + case SCLK_I2C5: + rk_clrsetreg(&cru->clksel_con[61], I2C_CLK_REG_MASK(5), + I2C_CLK_REG_VALUE(5, src_clk_div)); + break; + case SCLK_I2C6: + rk_clrsetreg(&cru->clksel_con[62], I2C_CLK_REG_MASK(6), + I2C_CLK_REG_VALUE(6, src_clk_div)); + break; + case SCLK_I2C7: + rk_clrsetreg(&cru->clksel_con[63], I2C_CLK_REG_MASK(7), + I2C_CLK_REG_VALUE(7, src_clk_div)); + break; + default: + printf("do not support this i2c bus\n"); + return -EINVAL; + } + + return DIV_TO_RATE(GPLL_HZ, src_clk_div); +} + +static ulong rk3399_vop_set_clk(struct rk3399_cru *cru, ulong clk_id, u32 hz) +{ + struct pll_div vpll_config = {0}; + int aclk_vop = 198*MHz; + void *aclkreg_addr, *dclkreg_addr; + u32 div; + + switch (clk_id) { + case DCLK_VOP0: + aclkreg_addr = &cru->clksel_con[47]; + dclkreg_addr = &cru->clksel_con[49]; + break; + case DCLK_VOP1: + aclkreg_addr = &cru->clksel_con[48]; + dclkreg_addr = &cru->clksel_con[50]; + break; + default: + return -EINVAL; + } + /* vop aclk source clk: cpll */ + div = CPLL_HZ / aclk_vop; + assert(div - 1 < 32); + + rk_clrsetreg(aclkreg_addr, + ACLK_VOP_PLL_SEL_MASK | ACLK_VOP_DIV_CON_MASK, + ACLK_VOP_PLL_SEL_CPLL << ACLK_VOP_PLL_SEL_SHIFT | + (div - 1) << ACLK_VOP_DIV_CON_SHIFT); + + /* vop dclk source from vpll, and equals to vpll(means div == 1) */ + if (pll_para_config(hz, &vpll_config)) + return -1; + + rkclk_set_pll(&cru->vpll_con[0], &vpll_config); + + rk_clrsetreg(dclkreg_addr, + DCLK_VOP_DCLK_SEL_MASK | DCLK_VOP_PLL_SEL_MASK| + DCLK_VOP_DIV_CON_MASK, + DCLK_VOP_DCLK_SEL_DIVOUT << DCLK_VOP_DCLK_SEL_SHIFT | + DCLK_VOP_PLL_SEL_VPLL << DCLK_VOP_PLL_SEL_SHIFT | + (1 - 1) << DCLK_VOP_DIV_CON_SHIFT); + + return hz; +} + +static ulong rk3399_mmc_get_clk(struct rk3399_cru *cru, uint clk_id) +{ + u32 div, con; + + switch (clk_id) { + case SCLK_SDMMC: + con = readl(&cru->clksel_con[16]); + break; + case SCLK_EMMC: + con = readl(&cru->clksel_con[21]); + break; + default: + return -EINVAL; + } + div = (con>>CLK_EMMC_DIV_CON_SHIFT) & CLK_EMMC_DIV_CON_MASK; + + return DIV_TO_RATE(GPLL_HZ, div); +} + +static ulong rk3399_mmc_set_clk(struct rk3399_cru *cru, + ulong clk_id, ulong set_rate) +{ + int src_clk_div; + int aclk_emmc = 198*MHz; + + switch (clk_id) { + case SCLK_SDMMC: + /* Select clk_sdmmc source from GPLL too */ + src_clk_div = GPLL_HZ / set_rate; + assert(src_clk_div - 1 < 127); + + rk_clrsetreg(&cru->clksel_con[16], + CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK, + CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT | + (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT); + break; + case SCLK_EMMC: + /* Select aclk_emmc source from GPLL */ + src_clk_div = GPLL_HZ / aclk_emmc; + assert(src_clk_div - 1 < 31); + + rk_clrsetreg(&cru->clksel_con[21], + ACLK_EMMC_PLL_SEL_MASK | ACLK_EMMC_DIV_CON_MASK, + ACLK_EMMC_PLL_SEL_GPLL << ACLK_EMMC_PLL_SEL_SHIFT | + (src_clk_div - 1) << ACLK_EMMC_DIV_CON_SHIFT); + + /* Select clk_emmc source from GPLL too */ + src_clk_div = GPLL_HZ / set_rate; + assert(src_clk_div - 1 < 127); + + rk_clrsetreg(&cru->clksel_con[22], + CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK, + CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT | + (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT); + break; + default: + return -EINVAL; + } + return rk3399_mmc_get_clk(cru, clk_id); +} + +static ulong rk3399_clk_get_rate(struct clk *clk) +{ + struct rk3399_clk_priv *priv = dev_get_priv(clk->dev); + ulong rate = 0; + + switch (clk->id) { + case 0 ... 63: + return 0; + case SCLK_SDMMC: + case SCLK_EMMC: + rate = rk3399_mmc_get_clk(priv->cru, clk->id); + break; + case SCLK_I2C1: + case SCLK_I2C2: + case SCLK_I2C3: + case SCLK_I2C5: + case SCLK_I2C6: + case SCLK_I2C7: + rate = rk3399_i2c_get_clk(priv->cru, clk->id); + break; + case DCLK_VOP0: + case DCLK_VOP1: + break; + default: + return -ENOENT; + } + + return rate; +} + +static ulong rk3399_clk_set_rate(struct clk *clk, ulong rate) +{ + struct rk3399_clk_priv *priv = dev_get_priv(clk->dev); + ulong ret = 0; + + switch (clk->id) { + case 0 ... 63: + return 0; + case SCLK_SDMMC: + case SCLK_EMMC: + ret = rk3399_mmc_set_clk(priv->cru, clk->id, rate); + break; + case SCLK_I2C1: + case SCLK_I2C2: + case SCLK_I2C3: + case SCLK_I2C5: + case SCLK_I2C6: + case SCLK_I2C7: + ret = rk3399_i2c_set_clk(priv->cru, clk->id, rate); + break; + case DCLK_VOP0: + case DCLK_VOP1: + rate = rk3399_vop_set_clk(priv->cru, clk->id, rate); + break; + default: + return -ENOENT; + } + + return ret; +} + +static struct clk_ops rk3399_clk_ops = { + .get_rate = rk3399_clk_get_rate, + .set_rate = rk3399_clk_set_rate, +}; + +void *rockchip_get_cru(void) +{ + struct udevice *dev; + fdt_addr_t *addr; + int ret; + + ret = uclass_get_device_by_name(UCLASS_CLK, "clk_rk3399", &dev); + if (ret) + return ERR_PTR(ret); + + addr = dev_get_addr_ptr(dev); + if ((fdt_addr_t)addr == FDT_ADDR_T_NONE) + return ERR_PTR(-EINVAL); + + return addr; +} + +static int rk3399_clk_probe(struct udevice *dev) +{ + struct rk3399_clk_priv *priv = dev_get_priv(dev); + + rkclk_init(priv->cru); + + return 0; +} + +static int rk3399_clk_ofdata_to_platdata(struct udevice *dev) +{ + struct rk3399_clk_priv *priv = dev_get_priv(dev); + + priv->cru = (struct rk3399_cru *)dev_get_addr(dev); + + return 0; +} + +static int rk3399_clk_bind(struct udevice *dev) +{ + int ret; + + /* The reset driver does not have a device node, so bind it here */ + ret = device_bind_driver(gd->dm_root, "rk3399_sysreset", "reset", &dev); + if (ret) + printf("Warning: No RK3399 reset driver: ret=%d\n", ret); + + return 0; +} + +static const struct udevice_id rk3399_clk_ids[] = { + { .compatible = "rockchip,rk3399-cru" }, + { } +}; + +U_BOOT_DRIVER(clk_rk3399) = { + .name = "clk_rk3399", + .id = UCLASS_CLK, + .of_match = rk3399_clk_ids, + .priv_auto_alloc_size = sizeof(struct rk3399_clk_priv), + .ofdata_to_platdata = rk3399_clk_ofdata_to_platdata, + .ops = &rk3399_clk_ops, + .bind = rk3399_clk_bind, + .probe = rk3399_clk_probe, +}; |