diff options
Diffstat (limited to 'drivers/clk/rockchip/clk_rk3308.c')
| -rw-r--r-- | drivers/clk/rockchip/clk_rk3308.c | 1072 |
1 files changed, 1072 insertions, 0 deletions
diff --git a/drivers/clk/rockchip/clk_rk3308.c b/drivers/clk/rockchip/clk_rk3308.c new file mode 100644 index 0000000000..f212c5ffc2 --- /dev/null +++ b/drivers/clk/rockchip/clk_rk3308.c @@ -0,0 +1,1072 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * (C) Copyright 2017-2019 Rockchip Electronics Co., Ltd + */ +#include <common.h> +#include <bitfield.h> +#include <clk-uclass.h> +#include <dm.h> +#include <div64.h> +#include <errno.h> +#include <syscon.h> +#include <asm/io.h> +#include <asm/arch/cru_rk3308.h> +#include <asm/arch-rockchip/clock.h> +#include <asm/arch-rockchip/hardware.h> +#include <dm/lists.h> +#include <dt-bindings/clock/rk3308-cru.h> + +DECLARE_GLOBAL_DATA_PTR; + +enum { + VCO_MAX_HZ = 3200U * 1000000, + VCO_MIN_HZ = 800 * 1000000, + OUTPUT_MAX_HZ = 3200U * 1000000, + OUTPUT_MIN_HZ = 24 * 1000000, +}; + +#define DIV_TO_RATE(input_rate, div) ((input_rate) / ((div) + 1)) + +#define RK3308_CPUCLK_RATE(_rate, _aclk_div, _pclk_div) \ +{ \ + .rate = _rate##U, \ + .aclk_div = _aclk_div, \ + .pclk_div = _pclk_div, \ +} + +static struct rockchip_pll_rate_table rk3308_pll_rates[] = { + /* _mhz, _refdiv, _fbdiv, _postdiv1, _postdiv2, _dsmpd, _frac */ + RK3036_PLL_RATE(1300000000, 6, 325, 1, 1, 1, 0), + RK3036_PLL_RATE(1200000000, 1, 50, 1, 1, 1, 0), + RK3036_PLL_RATE(816000000, 1, 68, 2, 1, 1, 0), + RK3036_PLL_RATE(748000000, 2, 187, 3, 1, 1, 0), +}; + +static struct rockchip_cpu_rate_table rk3308_cpu_rates[] = { + RK3308_CPUCLK_RATE(1200000000, 1, 5), + RK3308_CPUCLK_RATE(1008000000, 1, 5), + RK3308_CPUCLK_RATE(816000000, 1, 3), + RK3308_CPUCLK_RATE(600000000, 1, 3), + RK3308_CPUCLK_RATE(408000000, 1, 1), +}; + +static struct rockchip_pll_clock rk3308_pll_clks[] = { + [APLL] = PLL(pll_rk3328, PLL_APLL, RK3308_PLL_CON(0), + RK3308_MODE_CON, 0, 10, 0, rk3308_pll_rates), + [DPLL] = PLL(pll_rk3328, PLL_DPLL, RK3308_PLL_CON(8), + RK3308_MODE_CON, 2, 10, 0, NULL), + [VPLL0] = PLL(pll_rk3328, PLL_VPLL0, RK3308_PLL_CON(16), + RK3308_MODE_CON, 4, 10, 0, NULL), + [VPLL1] = PLL(pll_rk3328, PLL_VPLL1, RK3308_PLL_CON(24), + RK3308_MODE_CON, 6, 10, 0, NULL), +}; + +static ulong rk3308_armclk_set_clk(struct rk3308_clk_priv *priv, ulong hz) +{ + struct rk3308_cru *cru = priv->cru; + const struct rockchip_cpu_rate_table *rate; + ulong old_rate; + + rate = rockchip_get_cpu_settings(rk3308_cpu_rates, hz); + if (!rate) { + printf("%s unsupport rate\n", __func__); + return -EINVAL; + } + + /* + * select apll as cpu/core clock pll source and + * set up dependent divisors for PERI and ACLK clocks. + * core hz : apll = 1:1 + */ + old_rate = rockchip_pll_get_rate(&rk3308_pll_clks[APLL], + priv->cru, APLL); + if (old_rate > hz) { + if (rockchip_pll_set_rate(&rk3308_pll_clks[APLL], + priv->cru, APLL, hz)) + return -EINVAL; + rk_clrsetreg(&cru->clksel_con[0], + CORE_CLK_PLL_SEL_MASK | CORE_DIV_CON_MASK | + CORE_ACLK_DIV_MASK | CORE_DBG_DIV_MASK, + rate->aclk_div << CORE_ACLK_DIV_SHIFT | + rate->pclk_div << CORE_DBG_DIV_SHIFT | + CORE_CLK_PLL_SEL_APLL << CORE_CLK_PLL_SEL_SHIFT | + 0 << CORE_DIV_CON_SHIFT); + } else if (old_rate < hz) { + rk_clrsetreg(&cru->clksel_con[0], + CORE_CLK_PLL_SEL_MASK | CORE_DIV_CON_MASK | + CORE_ACLK_DIV_MASK | CORE_DBG_DIV_MASK, + rate->aclk_div << CORE_ACLK_DIV_SHIFT | + rate->pclk_div << CORE_DBG_DIV_SHIFT | + CORE_CLK_PLL_SEL_APLL << CORE_CLK_PLL_SEL_SHIFT | + 0 << CORE_DIV_CON_SHIFT); + if (rockchip_pll_set_rate(&rk3308_pll_clks[APLL], + priv->cru, APLL, hz)) + return -EINVAL; + } + + return rockchip_pll_get_rate(&rk3308_pll_clks[APLL], priv->cru, APLL); +} + +static void rk3308_clk_get_pll_rate(struct rk3308_clk_priv *priv) +{ + if (!priv->dpll_hz) + priv->dpll_hz = rockchip_pll_get_rate(&rk3308_pll_clks[DPLL], + priv->cru, DPLL); + if (!priv->vpll0_hz) + priv->vpll0_hz = rockchip_pll_get_rate(&rk3308_pll_clks[VPLL0], + priv->cru, VPLL0); + if (!priv->vpll1_hz) + priv->vpll1_hz = rockchip_pll_get_rate(&rk3308_pll_clks[VPLL1], + priv->cru, VPLL1); +} + +static ulong rk3308_i2c_get_clk(struct clk *clk) +{ + struct rk3308_clk_priv *priv = dev_get_priv(clk->dev); + struct rk3308_cru *cru = priv->cru; + u32 div, con, con_id; + + switch (clk->id) { + case SCLK_I2C0: + con_id = 25; + break; + case SCLK_I2C1: + con_id = 26; + break; + case SCLK_I2C2: + con_id = 27; + break; + case SCLK_I2C3: + con_id = 28; + break; + default: + printf("do not support this i2c bus\n"); + return -EINVAL; + } + + con = readl(&cru->clksel_con[con_id]); + div = con >> CLK_I2C_DIV_CON_SHIFT & CLK_I2C_DIV_CON_MASK; + + return DIV_TO_RATE(priv->dpll_hz, div); +} + +static ulong rk3308_i2c_set_clk(struct clk *clk, uint hz) +{ + struct rk3308_clk_priv *priv = dev_get_priv(clk->dev); + struct rk3308_cru *cru = priv->cru; + u32 src_clk_div, con_id; + + src_clk_div = DIV_ROUND_UP(priv->dpll_hz, hz); + assert(src_clk_div - 1 <= 127); + + switch (clk->id) { + case SCLK_I2C0: + con_id = 25; + break; + case SCLK_I2C1: + con_id = 26; + break; + case SCLK_I2C2: + con_id = 27; + break; + case SCLK_I2C3: + con_id = 28; + break; + default: + printf("do not support this i2c bus\n"); + return -EINVAL; + } + rk_clrsetreg(&cru->clksel_con[con_id], + CLK_I2C_PLL_SEL_MASK | CLK_I2C_DIV_CON_MASK, + CLK_I2C_PLL_SEL_DPLL << CLK_I2C_PLL_SEL_SHIFT | + (src_clk_div - 1) << CLK_I2C_DIV_CON_SHIFT); + + return rk3308_i2c_get_clk(clk); +} + +static ulong rk3308_mac_set_clk(struct clk *clk, uint hz) +{ + struct rk3308_clk_priv *priv = dev_get_priv(clk->dev); + struct rk3308_cru *cru = priv->cru; + u32 con = readl(&cru->clksel_con[43]); + ulong pll_rate; + u8 div; + + if ((con >> MAC_PLL_SHIFT) & MAC_SEL_VPLL0) + pll_rate = rockchip_pll_get_rate(&rk3308_pll_clks[VPLL0], + priv->cru, VPLL0); + else if ((con >> MAC_PLL_SHIFT) & MAC_SEL_VPLL1) + pll_rate = rockchip_pll_get_rate(&rk3308_pll_clks[VPLL1], + priv->cru, VPLL1); + else + pll_rate = rockchip_pll_get_rate(&rk3308_pll_clks[DPLL], + priv->cru, DPLL); + + /*default set 50MHZ for gmac*/ + if (!hz) + hz = 50000000; + + div = DIV_ROUND_UP(pll_rate, hz) - 1; + assert(div < 32); + rk_clrsetreg(&cru->clksel_con[43], MAC_DIV_MASK, + div << MAC_DIV_SHIFT); + + return DIV_TO_RATE(pll_rate, div); +} + +static int rk3308_mac_set_speed_clk(struct clk *clk, uint hz) +{ + struct rk3308_clk_priv *priv = dev_get_priv(clk->dev); + struct rk3308_cru *cru = priv->cru; + + if (hz != 2500000 && hz != 25000000) { + debug("Unsupported mac speed:%d\n", hz); + return -EINVAL; + } + + rk_clrsetreg(&cru->clksel_con[43], MAC_CLK_SPEED_SEL_MASK, + ((hz == 2500000) ? 0 : 1) << MAC_CLK_SPEED_SEL_SHIFT); + + return 0; +} + +static ulong rk3308_mmc_get_clk(struct clk *clk) +{ + struct rk3308_clk_priv *priv = dev_get_priv(clk->dev); + struct rk3308_cru *cru = priv->cru; + u32 div, con, con_id; + + switch (clk->id) { + case HCLK_SDMMC: + case SCLK_SDMMC: + con_id = 39; + break; + case HCLK_EMMC: + case SCLK_EMMC: + case SCLK_EMMC_SAMPLE: + con_id = 41; + break; + default: + return -EINVAL; + } + + con = readl(&cru->clksel_con[con_id]); + div = (con & EMMC_DIV_MASK) >> EMMC_DIV_SHIFT; + + if ((con & EMMC_PLL_MASK) >> EMMC_PLL_SHIFT + == EMMC_SEL_24M) + return DIV_TO_RATE(OSC_HZ, div) / 2; + else + return DIV_TO_RATE(priv->vpll0_hz, div) / 2; +} + +static ulong rk3308_mmc_set_clk(struct clk *clk, ulong set_rate) +{ + struct rk3308_clk_priv *priv = dev_get_priv(clk->dev); + struct rk3308_cru *cru = priv->cru; + int src_clk_div; + u32 con_id; + + switch (clk->id) { + case HCLK_SDMMC: + case SCLK_SDMMC: + con_id = 39; + break; + case HCLK_EMMC: + case SCLK_EMMC: + con_id = 41; + break; + default: + return -EINVAL; + } + /* Select clk_sdmmc/emmc source from VPLL0 by default */ + /* mmc clock defaulg div 2 internal, need provide double in cru */ + src_clk_div = DIV_ROUND_UP(priv->vpll0_hz / 2, set_rate); + + if (src_clk_div > 127) { + /* use 24MHz source for 400KHz clock */ + src_clk_div = DIV_ROUND_UP(OSC_HZ / 2, set_rate); + rk_clrsetreg(&cru->clksel_con[con_id], + EMMC_PLL_MASK | EMMC_DIV_MASK | EMMC_CLK_SEL_MASK, + EMMC_CLK_SEL_EMMC << EMMC_CLK_SEL_SHIFT | + EMMC_SEL_24M << EMMC_PLL_SHIFT | + (src_clk_div - 1) << EMMC_DIV_SHIFT); + } else { + rk_clrsetreg(&cru->clksel_con[con_id], + EMMC_PLL_MASK | EMMC_DIV_MASK | EMMC_CLK_SEL_MASK, + EMMC_CLK_SEL_EMMC << EMMC_CLK_SEL_SHIFT | + EMMC_SEL_VPLL0 << EMMC_PLL_SHIFT | + (src_clk_div - 1) << EMMC_DIV_SHIFT); + } + + return rk3308_mmc_get_clk(clk); +} + +static ulong rk3308_saradc_get_clk(struct clk *clk) +{ + struct rk3308_clk_priv *priv = dev_get_priv(clk->dev); + struct rk3308_cru *cru = priv->cru; + u32 div, con; + + con = readl(&cru->clksel_con[34]); + div = con >> CLK_SARADC_DIV_CON_SHIFT & CLK_SARADC_DIV_CON_MASK; + + return DIV_TO_RATE(OSC_HZ, div); +} + +static ulong rk3308_saradc_set_clk(struct clk *clk, uint hz) +{ + struct rk3308_clk_priv *priv = dev_get_priv(clk->dev); + struct rk3308_cru *cru = priv->cru; + int src_clk_div; + + src_clk_div = DIV_ROUND_UP(OSC_HZ, hz); + assert(src_clk_div - 1 <= 2047); + + rk_clrsetreg(&cru->clksel_con[34], + CLK_SARADC_DIV_CON_MASK, + (src_clk_div - 1) << CLK_SARADC_DIV_CON_SHIFT); + + return rk3308_saradc_get_clk(clk); +} + +static ulong rk3308_tsadc_get_clk(struct clk *clk) +{ + struct rk3308_clk_priv *priv = dev_get_priv(clk->dev); + struct rk3308_cru *cru = priv->cru; + u32 div, con; + + con = readl(&cru->clksel_con[33]); + div = con >> CLK_SARADC_DIV_CON_SHIFT & CLK_SARADC_DIV_CON_MASK; + + return DIV_TO_RATE(OSC_HZ, div); +} + +static ulong rk3308_tsadc_set_clk(struct clk *clk, uint hz) +{ + struct rk3308_clk_priv *priv = dev_get_priv(clk->dev); + struct rk3308_cru *cru = priv->cru; + int src_clk_div; + + src_clk_div = DIV_ROUND_UP(OSC_HZ, hz); + assert(src_clk_div - 1 <= 2047); + + rk_clrsetreg(&cru->clksel_con[33], + CLK_SARADC_DIV_CON_MASK, + (src_clk_div - 1) << CLK_SARADC_DIV_CON_SHIFT); + + return rk3308_tsadc_get_clk(clk); +} + +static ulong rk3308_spi_get_clk(struct clk *clk) +{ + struct rk3308_clk_priv *priv = dev_get_priv(clk->dev); + struct rk3308_cru *cru = priv->cru; + u32 div, con, con_id; + + switch (clk->id) { + case SCLK_SPI0: + con_id = 30; + break; + case SCLK_SPI1: + con_id = 31; + break; + case SCLK_SPI2: + con_id = 32; + break; + default: + printf("do not support this spi bus\n"); + return -EINVAL; + } + + con = readl(&cru->clksel_con[con_id]); + div = con >> CLK_SPI_DIV_CON_SHIFT & CLK_SPI_DIV_CON_MASK; + + return DIV_TO_RATE(priv->dpll_hz, div); +} + +static ulong rk3308_spi_set_clk(struct clk *clk, uint hz) +{ + struct rk3308_clk_priv *priv = dev_get_priv(clk->dev); + struct rk3308_cru *cru = priv->cru; + u32 src_clk_div, con_id; + + src_clk_div = DIV_ROUND_UP(priv->dpll_hz, hz); + assert(src_clk_div - 1 <= 127); + + switch (clk->id) { + case SCLK_SPI0: + con_id = 30; + break; + case SCLK_SPI1: + con_id = 31; + break; + case SCLK_SPI2: + con_id = 32; + break; + default: + printf("do not support this spi bus\n"); + return -EINVAL; + } + + rk_clrsetreg(&cru->clksel_con[con_id], + CLK_SPI_PLL_SEL_MASK | CLK_SPI_DIV_CON_MASK, + CLK_SPI_PLL_SEL_DPLL << CLK_SPI_PLL_SEL_SHIFT | + (src_clk_div - 1) << CLK_SPI_DIV_CON_SHIFT); + + return rk3308_spi_get_clk(clk); +} + +static ulong rk3308_pwm_get_clk(struct clk *clk) +{ + struct rk3308_clk_priv *priv = dev_get_priv(clk->dev); + struct rk3308_cru *cru = priv->cru; + u32 div, con; + + con = readl(&cru->clksel_con[29]); + div = con >> CLK_PWM_DIV_CON_SHIFT & CLK_PWM_DIV_CON_MASK; + + return DIV_TO_RATE(priv->dpll_hz, div); +} + +static ulong rk3308_pwm_set_clk(struct clk *clk, uint hz) +{ + struct rk3308_clk_priv *priv = dev_get_priv(clk->dev); + struct rk3308_cru *cru = priv->cru; + int src_clk_div; + + src_clk_div = DIV_ROUND_UP(priv->dpll_hz, hz); + assert(src_clk_div - 1 <= 127); + + rk_clrsetreg(&cru->clksel_con[29], + CLK_PWM_PLL_SEL_MASK | CLK_PWM_DIV_CON_MASK, + CLK_PWM_PLL_SEL_DPLL << CLK_PWM_PLL_SEL_SHIFT | + (src_clk_div - 1) << CLK_PWM_DIV_CON_SHIFT); + + return rk3308_pwm_get_clk(clk); +} + +static ulong rk3308_vop_get_clk(struct clk *clk) +{ + struct rk3308_clk_priv *priv = dev_get_priv(clk->dev); + struct rk3308_cru *cru = priv->cru; + u32 div, pll_sel, vol_sel, con, parent; + + con = readl(&cru->clksel_con[8]); + vol_sel = (con & DCLK_VOP_SEL_MASK) >> DCLK_VOP_SEL_SHIFT; + pll_sel = (con & DCLK_VOP_PLL_SEL_MASK) >> DCLK_VOP_PLL_SEL_SHIFT; + div = con & DCLK_VOP_DIV_MASK; + + if (vol_sel == DCLK_VOP_SEL_24M) { + parent = OSC_HZ; + } else if (vol_sel == DCLK_VOP_SEL_DIVOUT) { + switch (pll_sel) { + case DCLK_VOP_PLL_SEL_DPLL: + parent = priv->dpll_hz; + break; + case DCLK_VOP_PLL_SEL_VPLL0: + parent = priv->vpll0_hz; + break; + case DCLK_VOP_PLL_SEL_VPLL1: + parent = priv->vpll0_hz; + break; + default: + printf("do not support this vop pll sel\n"); + return -EINVAL; + } + } else { + printf("do not support this vop sel\n"); + return -EINVAL; + } + + return DIV_TO_RATE(parent, div); +} + +static ulong rk3308_vop_set_clk(struct clk *clk, ulong hz) +{ + struct rk3308_clk_priv *priv = dev_get_priv(clk->dev); + struct rk3308_cru *cru = priv->cru; + ulong pll_rate, now, best_rate = 0; + u32 i, div, best_div = 0, best_sel = 0; + + for (i = 0; i <= DCLK_VOP_PLL_SEL_VPLL1; i++) { + switch (i) { + case DCLK_VOP_PLL_SEL_DPLL: + pll_rate = priv->dpll_hz; + break; + case DCLK_VOP_PLL_SEL_VPLL0: + pll_rate = priv->vpll0_hz; + break; + case DCLK_VOP_PLL_SEL_VPLL1: + pll_rate = priv->vpll1_hz; + break; + default: + printf("do not support this vop pll sel\n"); + return -EINVAL; + } + + div = DIV_ROUND_UP(pll_rate, hz); + if (div > 255) + continue; + now = pll_rate / div; + if (abs(hz - now) < abs(hz - best_rate)) { + best_rate = now; + best_div = div; + best_sel = i; + } + debug("pll_rate=%lu, best_rate=%lu, best_div=%u, best_sel=%u\n", + pll_rate, best_rate, best_div, best_sel); + } + + if (best_rate != hz && hz == OSC_HZ) { + rk_clrsetreg(&cru->clksel_con[8], + DCLK_VOP_SEL_MASK, + DCLK_VOP_SEL_24M << DCLK_VOP_SEL_SHIFT); + } else if (best_rate) { + rk_clrsetreg(&cru->clksel_con[8], + DCLK_VOP_SEL_MASK | DCLK_VOP_PLL_SEL_MASK | + DCLK_VOP_DIV_MASK, + DCLK_VOP_SEL_DIVOUT << DCLK_VOP_SEL_SHIFT | + best_sel << DCLK_VOP_PLL_SEL_SHIFT | + (best_div - 1) << DCLK_VOP_DIV_SHIFT); + } else { + printf("do not support this vop freq\n"); + return -EINVAL; + } + + return rk3308_vop_get_clk(clk); +} + +static ulong rk3308_bus_get_clk(struct rk3308_clk_priv *priv, ulong clk_id) +{ + struct rk3308_cru *cru = priv->cru; + u32 div, con, parent = priv->dpll_hz; + + switch (clk_id) { + case ACLK_BUS: + con = readl(&cru->clksel_con[5]); + div = (con & BUS_ACLK_DIV_MASK) >> BUS_ACLK_DIV_SHIFT; + break; + case HCLK_BUS: + con = readl(&cru->clksel_con[6]); + div = (con & BUS_HCLK_DIV_MASK) >> BUS_HCLK_DIV_SHIFT; + break; + case PCLK_BUS: + case PCLK_WDT: + con = readl(&cru->clksel_con[6]); + div = (con & BUS_PCLK_DIV_MASK) >> BUS_PCLK_DIV_SHIFT; + break; + default: + return -ENOENT; + } + + return DIV_TO_RATE(parent, div); +} + +static ulong rk3308_bus_set_clk(struct rk3308_clk_priv *priv, ulong clk_id, + ulong hz) +{ + struct rk3308_cru *cru = priv->cru; + int src_clk_div; + + src_clk_div = DIV_ROUND_UP(priv->dpll_hz, hz); + assert(src_clk_div - 1 <= 31); + + /* + * select dpll as pd_bus bus clock source and + * set up dependent divisors for PCLK/HCLK and ACLK clocks. + */ + switch (clk_id) { + case ACLK_BUS: + rk_clrsetreg(&cru->clksel_con[5], + BUS_PLL_SEL_MASK | BUS_ACLK_DIV_MASK, + BUS_PLL_SEL_DPLL << BUS_PLL_SEL_SHIFT | + (src_clk_div - 1) << BUS_ACLK_DIV_SHIFT); + break; + case HCLK_BUS: + rk_clrsetreg(&cru->clksel_con[6], + BUS_HCLK_DIV_MASK, + (src_clk_div - 1) << BUS_HCLK_DIV_SHIFT); + break; + case PCLK_BUS: + rk_clrsetreg(&cru->clksel_con[6], + BUS_PCLK_DIV_MASK, + (src_clk_div - 1) << BUS_PCLK_DIV_SHIFT); + break; + default: + printf("do not support this bus freq\n"); + return -EINVAL; + } + + return rk3308_bus_get_clk(priv, clk_id); +} + +static ulong rk3308_peri_get_clk(struct rk3308_clk_priv *priv, ulong clk_id) +{ + struct rk3308_cru *cru = priv->cru; + u32 div, con, parent = priv->dpll_hz; + + switch (clk_id) { + case ACLK_PERI: + con = readl(&cru->clksel_con[36]); + div = (con & PERI_ACLK_DIV_MASK) >> PERI_ACLK_DIV_SHIFT; + break; + case HCLK_PERI: + con = readl(&cru->clksel_con[37]); + div = (con & PERI_HCLK_DIV_MASK) >> PERI_HCLK_DIV_SHIFT; + break; + case PCLK_PERI: + con = readl(&cru->clksel_con[37]); + div = (con & PERI_PCLK_DIV_MASK) >> PERI_PCLK_DIV_SHIFT; + break; + default: + return -ENOENT; + } + + return DIV_TO_RATE(parent, div); +} + +static ulong rk3308_peri_set_clk(struct rk3308_clk_priv *priv, ulong clk_id, + ulong hz) +{ + struct rk3308_cru *cru = priv->cru; + int src_clk_div; + + src_clk_div = DIV_ROUND_UP(priv->dpll_hz, hz); + assert(src_clk_div - 1 <= 31); + + /* + * select dpll as pd_peri bus clock source and + * set up dependent divisors for PCLK/HCLK and ACLK clocks. + */ + switch (clk_id) { + case ACLK_PERI: + rk_clrsetreg(&cru->clksel_con[36], + PERI_PLL_SEL_MASK | PERI_ACLK_DIV_MASK, + PERI_PLL_DPLL << PERI_PLL_SEL_SHIFT | + (src_clk_div - 1) << PERI_ACLK_DIV_SHIFT); + break; + case HCLK_PERI: + rk_clrsetreg(&cru->clksel_con[37], + PERI_HCLK_DIV_MASK, + (src_clk_div - 1) << PERI_HCLK_DIV_SHIFT); + break; + case PCLK_PERI: + rk_clrsetreg(&cru->clksel_con[37], + PERI_PCLK_DIV_MASK, + (src_clk_div - 1) << PERI_PCLK_DIV_SHIFT); + break; + default: + printf("do not support this peri freq\n"); + return -EINVAL; + } + + return rk3308_peri_get_clk(priv, clk_id); +} + +static ulong rk3308_audio_get_clk(struct rk3308_clk_priv *priv, ulong clk_id) +{ + struct rk3308_cru *cru = priv->cru; + u32 div, con, parent = priv->vpll0_hz; + + switch (clk_id) { + case HCLK_AUDIO: + con = readl(&cru->clksel_con[45]); + div = (con & AUDIO_HCLK_DIV_MASK) >> AUDIO_HCLK_DIV_SHIFT; + break; + case PCLK_AUDIO: + con = readl(&cru->clksel_con[45]); + div = (con & AUDIO_PCLK_DIV_MASK) >> AUDIO_PCLK_DIV_SHIFT; + break; + default: + return -ENOENT; + } + + return DIV_TO_RATE(parent, div); +} + +static ulong rk3308_audio_set_clk(struct rk3308_clk_priv *priv, ulong clk_id, + ulong hz) +{ + struct rk3308_cru *cru = priv->cru; + int src_clk_div; + + src_clk_div = DIV_ROUND_UP(priv->vpll0_hz, hz); + assert(src_clk_div - 1 <= 31); + + /* + * select vpll0 as audio bus clock source and + * set up dependent divisors for HCLK and PCLK clocks. + */ + switch (clk_id) { + case HCLK_AUDIO: + rk_clrsetreg(&cru->clksel_con[45], + AUDIO_PLL_SEL_MASK | AUDIO_HCLK_DIV_MASK, + AUDIO_PLL_VPLL0 << AUDIO_PLL_SEL_SHIFT | + (src_clk_div - 1) << AUDIO_HCLK_DIV_SHIFT); + break; + case PCLK_AUDIO: + rk_clrsetreg(&cru->clksel_con[45], + AUDIO_PLL_SEL_MASK | AUDIO_PCLK_DIV_MASK, + AUDIO_PLL_VPLL0 << AUDIO_PLL_SEL_SHIFT | + (src_clk_div - 1) << AUDIO_PCLK_DIV_SHIFT); + break; + default: + printf("do not support this audio freq\n"); + return -EINVAL; + } + + return rk3308_peri_get_clk(priv, clk_id); +} + +static ulong rk3308_crypto_get_clk(struct rk3308_clk_priv *priv, ulong clk_id) +{ + struct rk3308_cru *cru = priv->cru; + u32 div, con, parent; + + switch (clk_id) { + case SCLK_CRYPTO: + con = readl(&cru->clksel_con[7]); + div = (con & CRYPTO_DIV_MASK) >> CRYPTO_DIV_SHIFT; + parent = priv->vpll0_hz; + break; + case SCLK_CRYPTO_APK: + con = readl(&cru->clksel_con[7]); + div = (con & CRYPTO_APK_DIV_MASK) >> CRYPTO_APK_DIV_SHIFT; + parent = priv->vpll0_hz; + break; + default: + return -ENOENT; + } + + return DIV_TO_RATE(parent, div); +} + +static ulong rk3308_crypto_set_clk(struct rk3308_clk_priv *priv, ulong clk_id, + ulong hz) +{ + struct rk3308_cru *cru = priv->cru; + int src_clk_div; + + src_clk_div = DIV_ROUND_UP(priv->vpll0_hz, hz); + assert(src_clk_div - 1 <= 31); + + /* + * select gpll as crypto clock source and + * set up dependent divisors for crypto clocks. + */ + switch (clk_id) { + case SCLK_CRYPTO: + rk_clrsetreg(&cru->clksel_con[7], + CRYPTO_PLL_SEL_MASK | CRYPTO_DIV_MASK, + CRYPTO_PLL_SEL_VPLL0 << CRYPTO_PLL_SEL_SHIFT | + (src_clk_div - 1) << CRYPTO_DIV_SHIFT); + break; + case SCLK_CRYPTO_APK: + rk_clrsetreg(&cru->clksel_con[7], + CRYPTO_APK_PLL_SEL_MASK | CRYPTO_APK_DIV_MASK, + CRYPTO_PLL_SEL_VPLL0 << CRYPTO_APK_SEL_SHIFT | + (src_clk_div - 1) << CRYPTO_APK_DIV_SHIFT); + break; + default: + printf("do not support this peri freq\n"); + return -EINVAL; + } + + return rk3308_crypto_get_clk(priv, clk_id); +} + +static ulong rk3308_clk_get_rate(struct clk *clk) +{ + struct rk3308_clk_priv *priv = dev_get_priv(clk->dev); + ulong rate = 0; + + debug("%s id:%ld\n", __func__, clk->id); + + switch (clk->id) { + case PLL_APLL: + case ARMCLK: + rate = rockchip_pll_get_rate(&rk3308_pll_clks[APLL], + priv->cru, APLL); + break; + case PLL_DPLL: + rate = rockchip_pll_get_rate(&rk3308_pll_clks[DPLL], + priv->cru, DPLL); + break; + case PLL_VPLL0: + rate = rockchip_pll_get_rate(&rk3308_pll_clks[VPLL0], + priv->cru, VPLL0); + break; + case PLL_VPLL1: + rate = rockchip_pll_get_rate(&rk3308_pll_clks[VPLL1], + priv->cru, VPLL1); + break; + case HCLK_SDMMC: + case HCLK_EMMC: + case SCLK_SDMMC: + case SCLK_EMMC: + case SCLK_EMMC_SAMPLE: + rate = rk3308_mmc_get_clk(clk); + break; + case SCLK_I2C0: + case SCLK_I2C1: + case SCLK_I2C2: + case SCLK_I2C3: + rate = rk3308_i2c_get_clk(clk); + break; + case SCLK_SARADC: + rate = rk3308_saradc_get_clk(clk); + break; + case SCLK_TSADC: + rate = rk3308_tsadc_get_clk(clk); + break; + case SCLK_SPI0: + case SCLK_SPI1: + rate = rk3308_spi_get_clk(clk); + break; + case SCLK_PWM0: + rate = rk3308_pwm_get_clk(clk); + break; + case DCLK_VOP: + rate = rk3308_vop_get_clk(clk); + break; + case ACLK_BUS: + case HCLK_BUS: + case PCLK_BUS: + case PCLK_WDT: + rate = rk3308_bus_get_clk(priv, clk->id); + break; + case ACLK_PERI: + case HCLK_PERI: + case PCLK_PERI: + rate = rk3308_peri_get_clk(priv, clk->id); + break; + case HCLK_AUDIO: + case PCLK_AUDIO: + rate = rk3308_audio_get_clk(priv, clk->id); + break; + case SCLK_CRYPTO: + case SCLK_CRYPTO_APK: + rate = rk3308_crypto_get_clk(priv, clk->id); + break; + default: + return -ENOENT; + } + + return rate; +} + +static ulong rk3308_clk_set_rate(struct clk *clk, ulong rate) +{ + struct rk3308_clk_priv *priv = dev_get_priv(clk->dev); + ulong ret = 0; + + debug("%s %ld %ld\n", __func__, clk->id, rate); + + switch (clk->id) { + case PLL_DPLL: + ret = rockchip_pll_set_rate(&rk3308_pll_clks[DPLL], priv->cru, + DPLL, rate); + priv->dpll_hz = rockchip_pll_get_rate(&rk3308_pll_clks[DPLL], + priv->cru, DPLL); + break; + case ARMCLK: + if (priv->armclk_hz) + rk3308_armclk_set_clk(priv, rate); + priv->armclk_hz = rate; + break; + case HCLK_SDMMC: + case HCLK_EMMC: + case SCLK_SDMMC: + case SCLK_EMMC: + ret = rk3308_mmc_set_clk(clk, rate); + break; + case SCLK_I2C0: + case SCLK_I2C1: + case SCLK_I2C2: + case SCLK_I2C3: + ret = rk3308_i2c_set_clk(clk, rate); + break; + case SCLK_MAC: + ret = rk3308_mac_set_clk(clk, rate); + break; + case SCLK_MAC_RMII: + ret = rk3308_mac_set_speed_clk(clk, rate); + break; + case SCLK_SARADC: + ret = rk3308_saradc_set_clk(clk, rate); + break; + case SCLK_TSADC: + ret = rk3308_tsadc_set_clk(clk, rate); + break; + case SCLK_SPI0: + case SCLK_SPI1: + ret = rk3308_spi_set_clk(clk, rate); + break; + case SCLK_PWM0: + ret = rk3308_pwm_set_clk(clk, rate); + break; + case DCLK_VOP: + ret = rk3308_vop_set_clk(clk, rate); + break; + case ACLK_BUS: + case HCLK_BUS: + case PCLK_BUS: + rate = rk3308_bus_set_clk(priv, clk->id, rate); + break; + case ACLK_PERI: + case HCLK_PERI: + case PCLK_PERI: + rate = rk3308_peri_set_clk(priv, clk->id, rate); + break; + case HCLK_AUDIO: + case PCLK_AUDIO: + rate = rk3308_audio_set_clk(priv, clk->id, rate); + break; + case SCLK_CRYPTO: + case SCLK_CRYPTO_APK: + ret = rk3308_crypto_set_clk(priv, clk->id, rate); + break; + default: + return -ENOENT; + } + + return ret; +} + +#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA) +static int __maybe_unused rk3308_mac_set_parent(struct clk *clk, struct clk *parent) +{ + struct rk3308_clk_priv *priv = dev_get_priv(clk->dev); + + /* + * If the requested parent is in the same clock-controller and + * the id is SCLK_MAC_SRC, switch to the internal clock. + */ + if (parent->id == SCLK_MAC_SRC) { + debug("%s: switching RMII to SCLK_MAC\n", __func__); + rk_clrreg(&priv->cru->clksel_con[43], BIT(14)); + } else { + debug("%s: switching RMII to CLKIN\n", __func__); + rk_setreg(&priv->cru->clksel_con[43], BIT(14)); + } + + return 0; +} + +static int __maybe_unused rk3308_clk_set_parent(struct clk *clk, struct clk *parent) +{ + switch (clk->id) { + case SCLK_MAC: + return rk3308_mac_set_parent(clk, parent); + default: + break; + } + + debug("%s: unsupported clk %ld\n", __func__, clk->id); + return -ENOENT; +} +#endif + +static struct clk_ops rk3308_clk_ops = { + .get_rate = rk3308_clk_get_rate, + .set_rate = rk3308_clk_set_rate, +#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA) + .set_parent = rk3308_clk_set_parent, +#endif +}; + +static void rk3308_clk_init(struct udevice *dev) +{ + struct rk3308_clk_priv *priv = dev_get_priv(dev); + int ret; + + if (rockchip_pll_get_rate(&rk3308_pll_clks[APLL], + priv->cru, APLL) != APLL_HZ) { + ret = rk3308_armclk_set_clk(priv, APLL_HZ); + if (ret < 0) + printf("%s failed to set armclk rate\n", __func__); + } + + rk3308_clk_get_pll_rate(priv); + + rk3308_bus_set_clk(priv, ACLK_BUS, BUS_ACLK_HZ); + rk3308_bus_set_clk(priv, HCLK_BUS, BUS_HCLK_HZ); + rk3308_bus_set_clk(priv, PCLK_BUS, BUS_PCLK_HZ); + + rk3308_peri_set_clk(priv, ACLK_PERI, PERI_ACLK_HZ); + rk3308_peri_set_clk(priv, HCLK_PERI, PERI_HCLK_HZ); + rk3308_peri_set_clk(priv, PCLK_PERI, PERI_PCLK_HZ); + + rk3308_audio_set_clk(priv, HCLK_AUDIO, AUDIO_HCLK_HZ); + rk3308_audio_set_clk(priv, PCLK_AUDIO, AUDIO_PCLK_HZ); +} + +static int rk3308_clk_probe(struct udevice *dev) +{ + int ret; + + rk3308_clk_init(dev); + + /* Process 'assigned-{clocks/clock-parents/clock-rates}' properties */ + ret = clk_set_defaults(dev, 1); + if (ret) + debug("%s clk_set_defaults failed %d\n", __func__, ret); + + return ret; +} + +static int rk3308_clk_ofdata_to_platdata(struct udevice *dev) +{ + struct rk3308_clk_priv *priv = dev_get_priv(dev); + + priv->cru = dev_read_addr_ptr(dev); + + return 0; +} + +static int rk3308_clk_bind(struct udevice *dev) +{ + int ret; + struct udevice *sys_child; + struct sysreset_reg *priv; + + /* The reset driver does not have a device node, so bind it here */ + ret = device_bind_driver(dev, "rockchip_sysreset", "sysreset", + &sys_child); + if (ret) { + debug("Warning: No sysreset driver: ret=%d\n", ret); + } else { + priv = malloc(sizeof(struct sysreset_reg)); + priv->glb_srst_fst_value = offsetof(struct rk3308_cru, + glb_srst_fst); + priv->glb_srst_snd_value = offsetof(struct rk3308_cru, + glb_srst_snd); + sys_child->priv = priv; + } + +#if CONFIG_IS_ENABLED(RESET_ROCKCHIP) + ret = offsetof(struct rk3308_cru, softrst_con[0]); + ret = rockchip_reset_bind(dev, ret, 12); + if (ret) + debug("Warning: software reset driver bind faile\n"); +#endif + + return 0; +} + +static const struct udevice_id rk3308_clk_ids[] = { + { .compatible = "rockchip,rk3308-cru" }, + { } +}; + +U_BOOT_DRIVER(rockchip_rk3308_cru) = { + .name = "rockchip_rk3308_cru", + .id = UCLASS_CLK, + .of_match = rk3308_clk_ids, + .priv_auto_alloc_size = sizeof(struct rk3308_clk_priv), + .ofdata_to_platdata = rk3308_clk_ofdata_to_platdata, + .ops = &rk3308_clk_ops, + .bind = rk3308_clk_bind, + .probe = rk3308_clk_probe, +}; |