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![Simon Glass](/assets/img/avatar_default.png)
Move this uncommon header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
1076 lines
27 KiB
C
1076 lines
27 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* (C) Copyright 2017-2019 Rockchip Electronics Co., Ltd
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*/
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#include <common.h>
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#include <bitfield.h>
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#include <clk-uclass.h>
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#include <dm.h>
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#include <div64.h>
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#include <errno.h>
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#include <log.h>
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#include <malloc.h>
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#include <syscon.h>
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#include <asm/io.h>
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#include <asm/arch/cru_rk3308.h>
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#include <asm/arch-rockchip/clock.h>
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#include <asm/arch-rockchip/hardware.h>
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#include <dm/lists.h>
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#include <dt-bindings/clock/rk3308-cru.h>
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#include <linux/bitops.h>
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DECLARE_GLOBAL_DATA_PTR;
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enum {
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VCO_MAX_HZ = 3200U * 1000000,
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VCO_MIN_HZ = 800 * 1000000,
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OUTPUT_MAX_HZ = 3200U * 1000000,
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OUTPUT_MIN_HZ = 24 * 1000000,
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};
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#define DIV_TO_RATE(input_rate, div) ((input_rate) / ((div) + 1))
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#define RK3308_CPUCLK_RATE(_rate, _aclk_div, _pclk_div) \
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{ \
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.rate = _rate##U, \
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.aclk_div = _aclk_div, \
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.pclk_div = _pclk_div, \
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}
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static struct rockchip_pll_rate_table rk3308_pll_rates[] = {
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/* _mhz, _refdiv, _fbdiv, _postdiv1, _postdiv2, _dsmpd, _frac */
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RK3036_PLL_RATE(1300000000, 6, 325, 1, 1, 1, 0),
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RK3036_PLL_RATE(1200000000, 1, 50, 1, 1, 1, 0),
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RK3036_PLL_RATE(816000000, 1, 68, 2, 1, 1, 0),
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RK3036_PLL_RATE(748000000, 2, 187, 3, 1, 1, 0),
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};
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static struct rockchip_cpu_rate_table rk3308_cpu_rates[] = {
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RK3308_CPUCLK_RATE(1200000000, 1, 5),
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RK3308_CPUCLK_RATE(1008000000, 1, 5),
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RK3308_CPUCLK_RATE(816000000, 1, 3),
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RK3308_CPUCLK_RATE(600000000, 1, 3),
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RK3308_CPUCLK_RATE(408000000, 1, 1),
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};
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static struct rockchip_pll_clock rk3308_pll_clks[] = {
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[APLL] = PLL(pll_rk3328, PLL_APLL, RK3308_PLL_CON(0),
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RK3308_MODE_CON, 0, 10, 0, rk3308_pll_rates),
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[DPLL] = PLL(pll_rk3328, PLL_DPLL, RK3308_PLL_CON(8),
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RK3308_MODE_CON, 2, 10, 0, NULL),
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[VPLL0] = PLL(pll_rk3328, PLL_VPLL0, RK3308_PLL_CON(16),
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RK3308_MODE_CON, 4, 10, 0, NULL),
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[VPLL1] = PLL(pll_rk3328, PLL_VPLL1, RK3308_PLL_CON(24),
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RK3308_MODE_CON, 6, 10, 0, NULL),
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};
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static ulong rk3308_armclk_set_clk(struct rk3308_clk_priv *priv, ulong hz)
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{
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struct rk3308_cru *cru = priv->cru;
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const struct rockchip_cpu_rate_table *rate;
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ulong old_rate;
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rate = rockchip_get_cpu_settings(rk3308_cpu_rates, hz);
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if (!rate) {
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printf("%s unsupport rate\n", __func__);
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return -EINVAL;
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}
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/*
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* select apll as cpu/core clock pll source and
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* set up dependent divisors for PERI and ACLK clocks.
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* core hz : apll = 1:1
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*/
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old_rate = rockchip_pll_get_rate(&rk3308_pll_clks[APLL],
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priv->cru, APLL);
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if (old_rate > hz) {
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if (rockchip_pll_set_rate(&rk3308_pll_clks[APLL],
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priv->cru, APLL, hz))
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return -EINVAL;
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rk_clrsetreg(&cru->clksel_con[0],
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CORE_CLK_PLL_SEL_MASK | CORE_DIV_CON_MASK |
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CORE_ACLK_DIV_MASK | CORE_DBG_DIV_MASK,
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rate->aclk_div << CORE_ACLK_DIV_SHIFT |
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rate->pclk_div << CORE_DBG_DIV_SHIFT |
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CORE_CLK_PLL_SEL_APLL << CORE_CLK_PLL_SEL_SHIFT |
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0 << CORE_DIV_CON_SHIFT);
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} else if (old_rate < hz) {
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rk_clrsetreg(&cru->clksel_con[0],
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CORE_CLK_PLL_SEL_MASK | CORE_DIV_CON_MASK |
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CORE_ACLK_DIV_MASK | CORE_DBG_DIV_MASK,
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rate->aclk_div << CORE_ACLK_DIV_SHIFT |
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rate->pclk_div << CORE_DBG_DIV_SHIFT |
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CORE_CLK_PLL_SEL_APLL << CORE_CLK_PLL_SEL_SHIFT |
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0 << CORE_DIV_CON_SHIFT);
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if (rockchip_pll_set_rate(&rk3308_pll_clks[APLL],
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priv->cru, APLL, hz))
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return -EINVAL;
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}
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return rockchip_pll_get_rate(&rk3308_pll_clks[APLL], priv->cru, APLL);
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}
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static void rk3308_clk_get_pll_rate(struct rk3308_clk_priv *priv)
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{
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if (!priv->dpll_hz)
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priv->dpll_hz = rockchip_pll_get_rate(&rk3308_pll_clks[DPLL],
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priv->cru, DPLL);
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if (!priv->vpll0_hz)
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priv->vpll0_hz = rockchip_pll_get_rate(&rk3308_pll_clks[VPLL0],
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priv->cru, VPLL0);
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if (!priv->vpll1_hz)
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priv->vpll1_hz = rockchip_pll_get_rate(&rk3308_pll_clks[VPLL1],
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priv->cru, VPLL1);
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}
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static ulong rk3308_i2c_get_clk(struct clk *clk)
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{
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struct rk3308_clk_priv *priv = dev_get_priv(clk->dev);
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struct rk3308_cru *cru = priv->cru;
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u32 div, con, con_id;
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switch (clk->id) {
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case SCLK_I2C0:
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con_id = 25;
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break;
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case SCLK_I2C1:
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con_id = 26;
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break;
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case SCLK_I2C2:
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con_id = 27;
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break;
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case SCLK_I2C3:
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con_id = 28;
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break;
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default:
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printf("do not support this i2c bus\n");
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return -EINVAL;
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}
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con = readl(&cru->clksel_con[con_id]);
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div = con >> CLK_I2C_DIV_CON_SHIFT & CLK_I2C_DIV_CON_MASK;
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return DIV_TO_RATE(priv->dpll_hz, div);
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}
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static ulong rk3308_i2c_set_clk(struct clk *clk, uint hz)
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{
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struct rk3308_clk_priv *priv = dev_get_priv(clk->dev);
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struct rk3308_cru *cru = priv->cru;
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u32 src_clk_div, con_id;
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src_clk_div = DIV_ROUND_UP(priv->dpll_hz, hz);
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assert(src_clk_div - 1 <= 127);
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switch (clk->id) {
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case SCLK_I2C0:
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con_id = 25;
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break;
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case SCLK_I2C1:
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con_id = 26;
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break;
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case SCLK_I2C2:
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con_id = 27;
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break;
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case SCLK_I2C3:
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con_id = 28;
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break;
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default:
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printf("do not support this i2c bus\n");
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return -EINVAL;
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}
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rk_clrsetreg(&cru->clksel_con[con_id],
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CLK_I2C_PLL_SEL_MASK | CLK_I2C_DIV_CON_MASK,
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CLK_I2C_PLL_SEL_DPLL << CLK_I2C_PLL_SEL_SHIFT |
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(src_clk_div - 1) << CLK_I2C_DIV_CON_SHIFT);
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return rk3308_i2c_get_clk(clk);
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}
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static ulong rk3308_mac_set_clk(struct clk *clk, uint hz)
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{
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struct rk3308_clk_priv *priv = dev_get_priv(clk->dev);
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struct rk3308_cru *cru = priv->cru;
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u32 con = readl(&cru->clksel_con[43]);
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ulong pll_rate;
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u8 div;
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if ((con >> MAC_PLL_SHIFT) & MAC_SEL_VPLL0)
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pll_rate = rockchip_pll_get_rate(&rk3308_pll_clks[VPLL0],
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priv->cru, VPLL0);
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else if ((con >> MAC_PLL_SHIFT) & MAC_SEL_VPLL1)
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pll_rate = rockchip_pll_get_rate(&rk3308_pll_clks[VPLL1],
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priv->cru, VPLL1);
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else
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pll_rate = rockchip_pll_get_rate(&rk3308_pll_clks[DPLL],
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priv->cru, DPLL);
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/*default set 50MHZ for gmac*/
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if (!hz)
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hz = 50000000;
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div = DIV_ROUND_UP(pll_rate, hz) - 1;
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assert(div < 32);
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rk_clrsetreg(&cru->clksel_con[43], MAC_DIV_MASK,
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div << MAC_DIV_SHIFT);
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return DIV_TO_RATE(pll_rate, div);
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}
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static int rk3308_mac_set_speed_clk(struct clk *clk, uint hz)
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{
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struct rk3308_clk_priv *priv = dev_get_priv(clk->dev);
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struct rk3308_cru *cru = priv->cru;
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if (hz != 2500000 && hz != 25000000) {
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debug("Unsupported mac speed:%d\n", hz);
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return -EINVAL;
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}
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rk_clrsetreg(&cru->clksel_con[43], MAC_CLK_SPEED_SEL_MASK,
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((hz == 2500000) ? 0 : 1) << MAC_CLK_SPEED_SEL_SHIFT);
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return 0;
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}
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static ulong rk3308_mmc_get_clk(struct clk *clk)
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{
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struct rk3308_clk_priv *priv = dev_get_priv(clk->dev);
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struct rk3308_cru *cru = priv->cru;
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u32 div, con, con_id;
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switch (clk->id) {
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case HCLK_SDMMC:
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case SCLK_SDMMC:
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con_id = 39;
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break;
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case HCLK_EMMC:
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case SCLK_EMMC:
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case SCLK_EMMC_SAMPLE:
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con_id = 41;
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break;
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default:
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return -EINVAL;
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}
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con = readl(&cru->clksel_con[con_id]);
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div = (con & EMMC_DIV_MASK) >> EMMC_DIV_SHIFT;
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if ((con & EMMC_PLL_MASK) >> EMMC_PLL_SHIFT
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== EMMC_SEL_24M)
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return DIV_TO_RATE(OSC_HZ, div) / 2;
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else
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return DIV_TO_RATE(priv->vpll0_hz, div) / 2;
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}
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static ulong rk3308_mmc_set_clk(struct clk *clk, ulong set_rate)
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{
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struct rk3308_clk_priv *priv = dev_get_priv(clk->dev);
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struct rk3308_cru *cru = priv->cru;
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int src_clk_div;
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u32 con_id;
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switch (clk->id) {
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case HCLK_SDMMC:
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case SCLK_SDMMC:
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con_id = 39;
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break;
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case HCLK_EMMC:
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case SCLK_EMMC:
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con_id = 41;
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break;
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default:
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return -EINVAL;
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}
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/* Select clk_sdmmc/emmc source from VPLL0 by default */
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/* mmc clock defaulg div 2 internal, need provide double in cru */
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src_clk_div = DIV_ROUND_UP(priv->vpll0_hz / 2, set_rate);
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if (src_clk_div > 127) {
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/* use 24MHz source for 400KHz clock */
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src_clk_div = DIV_ROUND_UP(OSC_HZ / 2, set_rate);
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rk_clrsetreg(&cru->clksel_con[con_id],
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EMMC_PLL_MASK | EMMC_DIV_MASK | EMMC_CLK_SEL_MASK,
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EMMC_CLK_SEL_EMMC << EMMC_CLK_SEL_SHIFT |
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EMMC_SEL_24M << EMMC_PLL_SHIFT |
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(src_clk_div - 1) << EMMC_DIV_SHIFT);
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} else {
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rk_clrsetreg(&cru->clksel_con[con_id],
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EMMC_PLL_MASK | EMMC_DIV_MASK | EMMC_CLK_SEL_MASK,
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EMMC_CLK_SEL_EMMC << EMMC_CLK_SEL_SHIFT |
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EMMC_SEL_VPLL0 << EMMC_PLL_SHIFT |
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(src_clk_div - 1) << EMMC_DIV_SHIFT);
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}
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return rk3308_mmc_get_clk(clk);
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}
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static ulong rk3308_saradc_get_clk(struct clk *clk)
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{
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struct rk3308_clk_priv *priv = dev_get_priv(clk->dev);
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struct rk3308_cru *cru = priv->cru;
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u32 div, con;
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con = readl(&cru->clksel_con[34]);
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div = con >> CLK_SARADC_DIV_CON_SHIFT & CLK_SARADC_DIV_CON_MASK;
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return DIV_TO_RATE(OSC_HZ, div);
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}
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static ulong rk3308_saradc_set_clk(struct clk *clk, uint hz)
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{
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struct rk3308_clk_priv *priv = dev_get_priv(clk->dev);
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struct rk3308_cru *cru = priv->cru;
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int src_clk_div;
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src_clk_div = DIV_ROUND_UP(OSC_HZ, hz);
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assert(src_clk_div - 1 <= 2047);
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rk_clrsetreg(&cru->clksel_con[34],
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CLK_SARADC_DIV_CON_MASK,
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(src_clk_div - 1) << CLK_SARADC_DIV_CON_SHIFT);
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return rk3308_saradc_get_clk(clk);
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}
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static ulong rk3308_tsadc_get_clk(struct clk *clk)
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{
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struct rk3308_clk_priv *priv = dev_get_priv(clk->dev);
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struct rk3308_cru *cru = priv->cru;
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u32 div, con;
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con = readl(&cru->clksel_con[33]);
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div = con >> CLK_SARADC_DIV_CON_SHIFT & CLK_SARADC_DIV_CON_MASK;
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return DIV_TO_RATE(OSC_HZ, div);
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}
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static ulong rk3308_tsadc_set_clk(struct clk *clk, uint hz)
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{
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struct rk3308_clk_priv *priv = dev_get_priv(clk->dev);
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struct rk3308_cru *cru = priv->cru;
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int src_clk_div;
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src_clk_div = DIV_ROUND_UP(OSC_HZ, hz);
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assert(src_clk_div - 1 <= 2047);
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rk_clrsetreg(&cru->clksel_con[33],
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CLK_SARADC_DIV_CON_MASK,
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(src_clk_div - 1) << CLK_SARADC_DIV_CON_SHIFT);
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return rk3308_tsadc_get_clk(clk);
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}
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static ulong rk3308_spi_get_clk(struct clk *clk)
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{
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struct rk3308_clk_priv *priv = dev_get_priv(clk->dev);
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struct rk3308_cru *cru = priv->cru;
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u32 div, con, con_id;
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switch (clk->id) {
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case SCLK_SPI0:
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con_id = 30;
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break;
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case SCLK_SPI1:
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con_id = 31;
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break;
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case SCLK_SPI2:
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con_id = 32;
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break;
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default:
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printf("do not support this spi bus\n");
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return -EINVAL;
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}
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con = readl(&cru->clksel_con[con_id]);
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div = con >> CLK_SPI_DIV_CON_SHIFT & CLK_SPI_DIV_CON_MASK;
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return DIV_TO_RATE(priv->dpll_hz, div);
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}
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static ulong rk3308_spi_set_clk(struct clk *clk, uint hz)
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{
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struct rk3308_clk_priv *priv = dev_get_priv(clk->dev);
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struct rk3308_cru *cru = priv->cru;
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u32 src_clk_div, con_id;
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src_clk_div = DIV_ROUND_UP(priv->dpll_hz, hz);
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assert(src_clk_div - 1 <= 127);
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switch (clk->id) {
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case SCLK_SPI0:
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con_id = 30;
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break;
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case SCLK_SPI1:
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con_id = 31;
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break;
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case SCLK_SPI2:
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con_id = 32;
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break;
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default:
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printf("do not support this spi bus\n");
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return -EINVAL;
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}
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rk_clrsetreg(&cru->clksel_con[con_id],
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CLK_SPI_PLL_SEL_MASK | CLK_SPI_DIV_CON_MASK,
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CLK_SPI_PLL_SEL_DPLL << CLK_SPI_PLL_SEL_SHIFT |
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(src_clk_div - 1) << CLK_SPI_DIV_CON_SHIFT);
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return rk3308_spi_get_clk(clk);
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}
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static ulong rk3308_pwm_get_clk(struct clk *clk)
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{
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struct rk3308_clk_priv *priv = dev_get_priv(clk->dev);
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struct rk3308_cru *cru = priv->cru;
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u32 div, con;
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con = readl(&cru->clksel_con[29]);
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div = con >> CLK_PWM_DIV_CON_SHIFT & CLK_PWM_DIV_CON_MASK;
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return DIV_TO_RATE(priv->dpll_hz, div);
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}
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static ulong rk3308_pwm_set_clk(struct clk *clk, uint hz)
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{
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struct rk3308_clk_priv *priv = dev_get_priv(clk->dev);
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struct rk3308_cru *cru = priv->cru;
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int src_clk_div;
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src_clk_div = DIV_ROUND_UP(priv->dpll_hz, hz);
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assert(src_clk_div - 1 <= 127);
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rk_clrsetreg(&cru->clksel_con[29],
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CLK_PWM_PLL_SEL_MASK | CLK_PWM_DIV_CON_MASK,
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CLK_PWM_PLL_SEL_DPLL << CLK_PWM_PLL_SEL_SHIFT |
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(src_clk_div - 1) << CLK_PWM_DIV_CON_SHIFT);
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|
|
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,
|
|
};
|