rockchip: clk: Add clk driver for rk3308

Add clk controller driver for RK3308 SOC.

This patch depends on Elaine's pll patch[0].

[0]http://patchwork.ozlabs.org/patch/1183718/

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

2 files changed, 1073 insertions, 0 deletions

diff --git a/drivers/clk/rockchip/Makefile b/drivers/clk/rockchip/Makefile
index 8035b26136f..4cfcf833092 100644
--- a/drivers/clk/rockchip/Makefile
+++ b/drivers/clk/rockchip/Makefile
@@ -10,6 +10,7 @@ obj-$(CONFIG_ROCKCHIP_RK3128) += clk_rk3128.o
 obj-$(CONFIG_ROCKCHIP_RK3188) += clk_rk3188.o
 obj-$(CONFIG_ROCKCHIP_RK322X) += clk_rk322x.o
 obj-$(CONFIG_ROCKCHIP_RK3288) += clk_rk3288.o
+obj-$(CONFIG_ROCKCHIP_RK3308) += clk_rk3308.o
 obj-$(CONFIG_ROCKCHIP_RK3328) += clk_rk3328.o
 obj-$(CONFIG_ROCKCHIP_RK3368) += clk_rk3368.o
 obj-$(CONFIG_ROCKCHIP_RK3399) += clk_rk3399.o
diff --git a/drivers/clk/rockchip/clk_rk3308.c b/drivers/clk/rockchip/clk_rk3308.c
new file mode 100644
index 00000000000..f212c5ffc2c
--- /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,
+};