// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2019 Fuzhou Rockchip Electronics Co., Ltd
* Copyright (c) 2022 Edgeble AI Technologies Pvt. Ltd.
* Author: Finley Xiao <finley.xiao@rock-chips.com>
*/
#include <bitfield.h>
#include <clk-uclass.h>
#include <dm.h>
#include <errno.h>
#include <syscon.h>
#include <asm/arch-rockchip/clock.h>
#include <asm/arch-rockchip/cru_rv1126.h>
#include <asm/arch-rockchip/grf_rv1126.h>
#include <asm/arch-rockchip/hardware.h>
#include <dm/device-internal.h>
#include <dm/lists.h>
#include <dt-bindings/clock/rockchip,rv1126-cru.h>
#define RV1126_CPUCLK_RATE(_rate, _aclk_div, _pclk_div) \
{ \
.rate = _rate##U, \
.aclk_div = _aclk_div, \
.pclk_div = _pclk_div, \
}
#define DIV_TO_RATE(input_rate, div) ((input_rate) / ((div) + 1))
static struct rockchip_cpu_rate_table rv1126_cpu_rates[] = {
RV1126_CPUCLK_RATE(1200000000, 1, 5),
RV1126_CPUCLK_RATE(1008000000, 1, 5),
RV1126_CPUCLK_RATE(816000000, 1, 3),
RV1126_CPUCLK_RATE(600000000, 1, 3),
RV1126_CPUCLK_RATE(408000000, 1, 1),
};
static struct rockchip_pll_rate_table rv1126_pll_rates[] = {
/* _mhz, _refdiv, _fbdiv, _postdiv1, _postdiv2, _dsmpd, _frac */
RK3036_PLL_RATE(1600000000, 3, 200, 1, 1, 1, 0),
RK3036_PLL_RATE(1400000000, 3, 350, 2, 1, 1, 0),
RK3036_PLL_RATE(1200000000, 1, 100, 2, 1, 1, 0),
RK3036_PLL_RATE(1188000000, 1, 99, 2, 1, 1, 0),
RK3036_PLL_RATE(1100000000, 3, 275, 2, 1, 1, 0),
RK3036_PLL_RATE(1008000000, 1, 84, 2, 1, 1, 0),
RK3036_PLL_RATE(1000000000, 3, 250, 2, 1, 1, 0),
RK3036_PLL_RATE(816000000, 1, 68, 2, 1, 1, 0),
RK3036_PLL_RATE(800000000, 3, 200, 2, 1, 1, 0),
RK3036_PLL_RATE(600000000, 1, 100, 4, 1, 1, 0),
RK3036_PLL_RATE(594000000, 1, 99, 4, 1, 1, 0),
RK3036_PLL_RATE(500000000, 1, 125, 6, 1, 1, 0),
RK3036_PLL_RATE(200000000, 1, 100, 6, 2, 1, 0),
RK3036_PLL_RATE(100000000, 1, 100, 6, 4, 1, 0),
{ /* sentinel */ },
};
static struct rockchip_pll_clock rv1126_pll_clks[] = {
[APLL] = PLL(pll_rk3328, PLL_APLL, RV1126_PLL_CON(0),
RV1126_MODE_CON, 0, 10, 0, rv1126_pll_rates),
[DPLL] = PLL(pll_rk3328, PLL_DPLL, RV1126_PLL_CON(8),
RV1126_MODE_CON, 2, 10, 0, NULL),
[CPLL] = PLL(pll_rk3328, PLL_CPLL, RV1126_PLL_CON(16),
RV1126_MODE_CON, 4, 10, 0, rv1126_pll_rates),
[HPLL] = PLL(pll_rk3328, PLL_HPLL, RV1126_PLL_CON(24),
RV1126_MODE_CON, 6, 10, 0, rv1126_pll_rates),
[GPLL] = PLL(pll_rk3328, PLL_GPLL, RV1126_PMU_PLL_CON(0),
RV1126_PMU_MODE, 0, 10, 0, rv1126_pll_rates),
};
static ulong rv1126_gpll_set_rate(struct rv1126_clk_priv *priv,
struct rv1126_pmuclk_priv *pmu_priv,
ulong rate);
/*
*
* rational_best_approximation(31415, 10000,
* (1 << 8) - 1, (1 << 5) - 1, &n, &d);
*
* you may look at given_numerator as a fixed point number,
* with the fractional part size described in given_denominator.
*
* for theoretical background, see:
* http://en.wikipedia.org/wiki/Continued_fraction
*/
static void rational_best_approximation(unsigned long given_numerator,
unsigned long given_denominator,
unsigned long max_numerator,
unsigned long max_denominator,
unsigned long *best_numerator,
unsigned long *best_denominator)
{
unsigned long n, d, n0, d0, n1, d1;
n = given_numerator;
d = given_denominator;
n0 = 0;
d1 = 0;
n1 = 1;
d0 = 1;
for (;;) {
unsigned long t, a;
if (n1 > max_numerator || d1 > max_denominator) {
n1 = n0;
d1 = d0;
break;
}
if (d == 0)
break;
t = d;
a = n / d;
d = n % d;
n = t;
t = n0 + a * n1;
n0 = n1;
n1 = t;
t = d0 + a * d1;
d0 = d1;
d1 = t;
}
*best_numerator = n1;
*best_denominator = d1;
}
static ulong rv1126_gpll_get_pmuclk(struct rv1126_pmuclk_priv *priv)
{
return rockchip_pll_get_rate(&rv1126_pll_clks[GPLL],
priv->pmucru, GPLL);
}
static ulong rv1126_gpll_set_pmuclk(struct rv1126_pmuclk_priv *pmu_priv, ulong rate)
{
struct udevice *cru_dev;
struct rv1126_clk_priv *priv;
int ret;
ret = uclass_get_device_by_driver(UCLASS_CLK,
DM_DRIVER_GET(rockchip_rv1126_cru),
&cru_dev);
if (ret) {
printf("%s: could not find cru device\n", __func__);
return ret;
}
priv = dev_get_priv(cru_dev);
if (rv1126_gpll_set_rate(priv, pmu_priv, rate)) {
printf("%s: failed to set gpll rate %lu\n", __func__, rate);
return -EINVAL;
}
return 0;
}
static ulong rv1126_rtc32k_get_pmuclk(struct rv1126_pmuclk_priv *priv)
{
struct rv1126_pmucru *pmucru = priv->pmucru;
unsigned long m, n;
u32 fracdiv;
fracdiv = readl(&pmucru->pmu_clksel_con[13]);
m = fracdiv & CLK_RTC32K_FRAC_NUMERATOR_MASK;
m >>= CLK_RTC32K_FRAC_NUMERATOR_SHIFT;
n = fracdiv & CLK_RTC32K_FRAC_DENOMINATOR_MASK;
n >>= CLK_RTC32K_FRAC_DENOMINATOR_SHIFT;
return OSC_HZ * m / n;
}
static ulong rv1126_rtc32k_set_pmuclk(struct rv1126_pmuclk_priv *priv,
ulong rate)
{
struct rv1126_pmucru *pmucru = priv->pmucru;
unsigned long m, n, val;
rk_clrsetreg(&pmucru->pmu_clksel_con[0], RTC32K_SEL_MASK,
RTC32K_SEL_OSC0_DIV32K << RTC32K_SEL_SHIFT);
rational_best_approximation(rate, OSC_HZ,
GENMASK(16 - 1, 0),
GENMASK(16 - 1, 0),
&m, &n);
val = m << CLK_RTC32K_FRAC_NUMERATOR_SHIFT | n;
writel(val, &pmucru->pmu_clksel_con[13]);
return rv1126_rtc32k_get_pmuclk(priv);
}
static ulong rv1126_i2c_get_pmuclk(struct rv1126_pmuclk_priv *priv,
ulong clk_id)
{
struct rv1126_pmucru *pmucru = priv->pmucru;
u32 div, con;
switch (clk_id) {
case CLK_I2C0:
con = readl(&pmucru->pmu_clksel_con[2]);
div = (con & CLK_I2C0_DIV_MASK) >> CLK_I2C0_DIV_SHIFT;
break;
case CLK_I2C2:
con = readl(&pmucru->pmu_clksel_con[3]);
div = (con & CLK_I2C1_DIV_MASK) >> CLK_I2C1_DIV_SHIFT;
break;
default:
return -ENOENT;
}
return DIV_TO_RATE(priv->gpll_hz, div);
}
static ulong rv1126_i2c_set_pmuclk(struct rv1126_pmuclk_priv *priv,
ulong clk_id, ulong rate)
{
struct rv1126_pmucru *pmucru = priv->pmucru;
int src_clk_div;
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
assert(src_clk_div - 1 <= 127);
switch (clk_id) {
case CLK_I2C0:
rk_clrsetreg(&pmucru->pmu_clksel_con[2], CLK_I2C0_DIV_MASK,
(src_clk_div - 1) << CLK_I2C0_DIV_SHIFT);
break;
case CLK_I2C2:
rk_clrsetreg(&pmucru->pmu_clksel_con[3], CLK_I2C2_DIV_MASK,
(src_clk_div - 1) << CLK_I2C2_DIV_SHIFT);
break;
default:
return -ENOENT;
}
return rv1126_i2c_get_pmuclk(priv, clk_id);
}
static ulong rv1126_pwm_get_pmuclk(struct rv1126_pmuclk_priv *priv,
ulong clk_id)
{
struct rv1126_pmucru *pmucru = priv->pmucru;
u32 div, sel, con;
switch (clk_id) {
case CLK_PWM0:
con = readl(&pmucru->pmu_clksel_con[6]);
sel = (con & CLK_PWM0_SEL_MASK) >> CLK_PWM0_SEL_SHIFT;
div = (con & CLK_PWM0_DIV_MASK) >> CLK_PWM0_DIV_SHIFT;
if (sel == CLK_PWM0_SEL_XIN24M)
return OSC_HZ;
break;
case CLK_PWM1:
con = readl(&pmucru->pmu_clksel_con[6]);
sel = (con & CLK_PWM1_SEL_MASK) >> CLK_PWM1_SEL_SHIFT;
div = (con & CLK_PWM1_DIV_MASK) >> CLK_PWM1_DIV_SHIFT;
if (sel == CLK_PWM1_SEL_XIN24M)
return OSC_HZ;
break;
default:
return -ENOENT;
}
return DIV_TO_RATE(priv->gpll_hz, div);
}
static ulong rv1126_pwm_set_pmuclk(struct rv1126_pmuclk_priv *priv,
ulong clk_id, ulong rate)
{
struct rv1126_pmucru *pmucru = priv->pmucru;
int src_clk_div;
switch (clk_id) {
case CLK_PWM0:
if (rate == OSC_HZ) {
rk_clrsetreg(&pmucru->pmu_clksel_con[6],
CLK_PWM0_SEL_MASK,
CLK_PWM0_SEL_XIN24M << CLK_PWM0_SEL_SHIFT);
rk_clrsetreg(&pmucru->pmu_clksel_con[6],
CLK_PWM0_DIV_MASK, 0);
} else {
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
assert(src_clk_div - 1 <= 127);
rk_clrsetreg(&pmucru->pmu_clksel_con[6],
CLK_PWM0_DIV_MASK,
(src_clk_div - 1) << CLK_PWM0_DIV_SHIFT);
rk_clrsetreg(&pmucru->pmu_clksel_con[6],
CLK_PWM0_SEL_MASK,
CLK_PWM0_SEL_GPLL << CLK_PWM0_SEL_SHIFT);
}
break;
case CLK_PWM1:
if (rate == OSC_HZ) {
rk_clrsetreg(&pmucru->pmu_clksel_con[6],
CLK_PWM1_SEL_MASK,
CLK_PWM1_SEL_XIN24M << CLK_PWM1_SEL_SHIFT);
rk_clrsetreg(&pmucru->pmu_clksel_con[6],
CLK_PWM1_DIV_MASK, 0);
} else {
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
assert(src_clk_div - 1 <= 127);
rk_clrsetreg(&pmucru->pmu_clksel_con[6],
CLK_PWM1_DIV_MASK,
(src_clk_div - 1) << CLK_PWM1_DIV_SHIFT);
rk_clrsetreg(&pmucru->pmu_clksel_con[6],
CLK_PWM1_SEL_MASK,
CLK_PWM1_SEL_GPLL << CLK_PWM1_SEL_SHIFT);
}
break;
default:
return -ENOENT;
}
return rv1126_pwm_get_pmuclk(priv, clk_id);
}
static ulong rv1126_spi_get_pmuclk(struct rv1126_pmuclk_priv *priv)
{
struct rv1126_pmucru *pmucru = priv->pmucru;
u32 div, con;
con = readl(&pmucru->pmu_clksel_con[9]);
div = (con & CLK_SPI0_DIV_MASK) >> CLK_SPI0_DIV_SHIFT;
return DIV_TO_RATE(priv->gpll_hz, div);
}
static ulong rv1126_spi_set_pmuclk(struct rv1126_pmuclk_priv *priv,
ulong rate)
{
struct rv1126_pmucru *pmucru = priv->pmucru;
int src_clk_div;
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
assert(src_clk_div - 1 <= 127);
rk_clrsetreg(&pmucru->pmu_clksel_con[9],
CLK_SPI0_SEL_MASK | CLK_SPI0_DIV_MASK,
CLK_SPI0_SEL_GPLL << CLK_SPI0_SEL_SHIFT |
(src_clk_div - 1) << CLK_SPI0_DIV_SHIFT);
return rv1126_spi_get_pmuclk(priv);
}
static ulong rv1126_pdpmu_get_pmuclk(struct rv1126_pmuclk_priv *priv)
{
struct rv1126_pmucru *pmucru = priv->pmucru;
u32 div, con;
con = readl(&pmucru->pmu_clksel_con[1]);
div = (con & PCLK_PDPMU_DIV_MASK) >> PCLK_PDPMU_DIV_SHIFT;
return DIV_TO_RATE(priv->gpll_hz, div);
}
static ulong rv1126_pdpmu_set_pmuclk(struct rv1126_pmuclk_priv *priv,
ulong rate)
{
struct rv1126_pmucru *pmucru = priv->pmucru;
int src_clk_div;
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
assert(src_clk_div - 1 <= 31);
rk_clrsetreg(&pmucru->pmu_clksel_con[1],
PCLK_PDPMU_DIV_MASK,
(src_clk_div - 1) << PCLK_PDPMU_DIV_SHIFT);
return rv1126_pdpmu_get_pmuclk(priv);
}
static ulong rv1126_pmuclk_get_rate(struct clk *clk)
{
struct rv1126_pmuclk_priv *priv = dev_get_priv(clk->dev);
ulong rate = 0;
if (!priv->gpll_hz) {
printf("%s gpll=%lu\n", __func__, priv->gpll_hz);
return -ENOENT;
}
debug("%s %ld\n", __func__, clk->id);
switch (clk->id) {
case PLL_GPLL:
rate = rv1126_gpll_get_pmuclk(priv);
break;
case CLK_RTC32K:
rate = rv1126_rtc32k_get_pmuclk(priv);
break;
case CLK_I2C0:
case CLK_I2C2:
rate = rv1126_i2c_get_pmuclk(priv, clk->id);
break;
case CLK_PWM0:
case CLK_PWM1:
rate = rv1126_pwm_get_pmuclk(priv, clk->id);
break;
case CLK_SPI0:
rate = rv1126_spi_get_pmuclk(priv);
break;
case PCLK_PDPMU:
rate = rv1126_pdpmu_get_pmuclk(priv);
break;
default:
debug("%s: Unsupported CLK#%ld\n", __func__, clk->id);
return -ENOENT;
}
return rate;
}
static ulong rv1126_pmuclk_set_rate(struct clk *clk, ulong rate)
{
struct rv1126_pmuclk_priv *priv = dev_get_priv(clk->dev);
ulong ret = 0;
if (!priv->gpll_hz) {
printf("%s gpll=%lu\n", __func__, priv->gpll_hz);
return -ENOENT;
}
debug("%s %ld %ld\n", __func__, clk->id, rate);
switch (clk->id) {
case PLL_GPLL:
ret = rv1126_gpll_set_pmuclk(priv, rate);
break;
case CLK_RTC32K:
ret = rv1126_rtc32k_set_pmuclk(priv, rate);
break;
case CLK_I2C0:
case CLK_I2C2:
ret = rv1126_i2c_set_pmuclk(priv, clk->id, rate);
break;
case CLK_PWM0:
case CLK_PWM1:
ret = rv1126_pwm_set_pmuclk(priv, clk->id, rate);
break;
case CLK_SPI0:
ret = rv1126_spi_set_pmuclk(priv, rate);
break;
case PCLK_PDPMU:
ret = rv1126_pdpmu_set_pmuclk(priv, rate);
break;
default:
debug("%s: Unsupported CLK#%ld\n", __func__, clk->id);
return -ENOENT;
}
return ret;
}
static int rv1126_rtc32k_set_parent(struct clk *clk, struct clk *parent)
{
struct rv1126_pmuclk_priv *priv = dev_get_priv(clk->dev);
struct rv1126_pmucru *pmucru = priv->pmucru;
if (parent->id == CLK_OSC0_DIV32K)
rk_clrsetreg(&pmucru->pmu_clksel_con[0], RTC32K_SEL_MASK,
RTC32K_SEL_OSC0_DIV32K << RTC32K_SEL_SHIFT);
else
rk_clrsetreg(&pmucru->pmu_clksel_con[0], RTC32K_SEL_MASK,
RTC32K_SEL_OSC1_32K << RTC32K_SEL_SHIFT);
return 0;
}
static int rv1126_pmuclk_set_parent(struct clk *clk, struct clk *parent)
{
switch (clk->id) {
case CLK_RTC32K:
return rv1126_rtc32k_set_parent(clk, parent);
default:
debug("%s: Unsupported CLK#%ld\n", __func__, clk->id);
return -ENOENT;
}
}
static struct clk_ops rv1126_pmuclk_ops = {
.get_rate = rv1126_pmuclk_get_rate,
.set_rate = rv1126_pmuclk_set_rate,
.set_parent = rv1126_pmuclk_set_parent,
};
static int rv1126_pmuclk_probe(struct udevice *dev)
{
struct rv1126_pmuclk_priv *priv = dev_get_priv(dev);
priv->gpll_hz = rv1126_gpll_get_pmuclk(priv);
return 0;
}
static int rv1126_pmuclk_of_to_plat(struct udevice *dev)
{
struct rv1126_pmuclk_priv *priv = dev_get_priv(dev);
priv->pmucru = dev_read_addr_ptr(dev);
return 0;
}
static int rv1126_pmuclk_bind(struct udevice *dev)
{
#if CONFIG_IS_ENABLED(RESET_ROCKCHIP)
int ret;
ret = offsetof(struct rv1126_pmucru, pmu_softrst_con[0]);
ret = rockchip_reset_bind(dev, ret, 2);
if (ret)
debug("Warning: software reset driver bind failed\n");
#endif
return 0;
}
static const struct udevice_id rv1126_pmuclk_ids[] = {
{ .compatible = "rockchip,rv1126-pmucru" },
{ }
};
U_BOOT_DRIVER(rockchip_rv1126_pmucru) = {
.name = "rockchip_rv1126_pmucru",
.id = UCLASS_CLK,
.of_match = rv1126_pmuclk_ids,
.priv_auto = sizeof(struct rv1126_pmuclk_priv),
.of_to_plat = rv1126_pmuclk_of_to_plat,
.ops = &rv1126_pmuclk_ops,
.bind = rv1126_pmuclk_bind,
.probe = rv1126_pmuclk_probe,
};
static int rv1126_armclk_set_clk(struct rv1126_clk_priv *priv, ulong hz)
{
struct rv1126_cru *cru = priv->cru;
const struct rockchip_cpu_rate_table *rate;
ulong old_rate;
rate = rockchip_get_cpu_settings(rv1126_cpu_rates, hz);
if (!rate) {
printf("%s unsupported rate\n", __func__);
return -EINVAL;
}
/*
* set up dependent divisors for DBG and ACLK clocks.
*/
old_rate = rockchip_pll_get_rate(&rv1126_pll_clks[APLL],
priv->cru, APLL);
if (old_rate > hz) {
if (rockchip_pll_set_rate(&rv1126_pll_clks[APLL],
priv->cru, APLL, hz))
return -EINVAL;
rk_clrsetreg(&cru->clksel_con[1],
CORE_DBG_DIV_MASK | CORE_ACLK_DIV_MASK,
rate->pclk_div << CORE_DBG_DIV_SHIFT |
rate->aclk_div << CORE_ACLK_DIV_SHIFT);
} else if (old_rate < hz) {
rk_clrsetreg(&cru->clksel_con[1],
CORE_DBG_DIV_MASK | CORE_ACLK_DIV_MASK,
rate->pclk_div << CORE_DBG_DIV_SHIFT |
rate->aclk_div << CORE_ACLK_DIV_SHIFT);
if (rockchip_pll_set_rate(&rv1126_pll_clks[APLL],
priv->cru, APLL, hz))
return -EINVAL;
}
return 0;
}
static ulong rv1126_pdcore_get_clk(struct rv1126_clk_priv *priv)
{
struct rv1126_cru *cru = priv->cru;
u32 con, div;
con = readl(&cru->clksel_con[0]);
div = (con & CORE_HCLK_DIV_MASK) >> CORE_HCLK_DIV_SHIFT;
return DIV_TO_RATE(priv->gpll_hz, div);
}
static ulong rv1126_pdcore_set_clk(struct rv1126_clk_priv *priv, ulong rate)
{
struct rv1126_cru *cru = priv->cru;
int src_clk_div;
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
assert(src_clk_div - 1 <= 31);
rk_clrsetreg(&cru->clksel_con[0], CORE_HCLK_DIV_MASK,
(src_clk_div - 1) << CORE_HCLK_DIV_SHIFT);
return rv1126_pdcore_get_clk(priv);
}
static ulong rv1126_pdbus_get_clk(struct rv1126_clk_priv *priv, ulong clk_id)
{
struct rv1126_cru *cru = priv->cru;
u32 con, div, sel, parent;
switch (clk_id) {
case ACLK_PDBUS:
con = readl(&cru->clksel_con[2]);
div = (con & ACLK_PDBUS_DIV_MASK) >> ACLK_PDBUS_DIV_SHIFT;
sel = (con & ACLK_PDBUS_SEL_MASK) >> ACLK_PDBUS_SEL_SHIFT;
if (sel == ACLK_PDBUS_SEL_GPLL)
parent = priv->gpll_hz;
else if (sel == ACLK_PDBUS_SEL_CPLL)
parent = priv->cpll_hz;
else
return -ENOENT;
break;
case HCLK_PDBUS:
con = readl(&cru->clksel_con[2]);
div = (con & HCLK_PDBUS_DIV_MASK) >> HCLK_PDBUS_DIV_SHIFT;
sel = (con & HCLK_PDBUS_SEL_MASK) >> HCLK_PDBUS_SEL_SHIFT;
if (sel == HCLK_PDBUS_SEL_GPLL)
parent = priv->gpll_hz;
else if (sel == HCLK_PDBUS_SEL_CPLL)
parent = priv->cpll_hz;
else
return -ENOENT;
break;
case PCLK_PDBUS:
case PCLK_WDT:
con = readl(&cru->clksel_con[3]);
div = (con & PCLK_PDBUS_DIV_MASK) >> PCLK_PDBUS_DIV_SHIFT;
sel = (con & PCLK_PDBUS_SEL_MASK) >> PCLK_PDBUS_SEL_SHIFT;
if (sel == PCLK_PDBUS_SEL_GPLL)
parent = priv->gpll_hz;
else if (sel == PCLK_PDBUS_SEL_CPLL)
parent = priv->cpll_hz;
else
return -ENOENT;
break;
default:
return -ENOENT;
}
return DIV_TO_RATE(parent, div);
}
static ulong rv1126_pdbus_set_clk(struct rv1126_clk_priv *priv, ulong clk_id,
ulong rate)
{
struct rv1126_cru *cru = priv->cru;
int src_clk_div, clk_sel;
switch (clk_id) {
case ACLK_PDBUS:
if (CPLL_HZ % rate) {
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
clk_sel = ACLK_PDBUS_SEL_GPLL;
} else {
src_clk_div = DIV_ROUND_UP(priv->cpll_hz, rate);
clk_sel = ACLK_PDBUS_SEL_CPLL;
}
assert(src_clk_div - 1 <= 31);
rk_clrsetreg(&cru->clksel_con[2],
ACLK_PDBUS_SEL_MASK | ACLK_PDBUS_DIV_MASK,
clk_sel << ACLK_PDBUS_SEL_SHIFT |
(src_clk_div - 1) << ACLK_PDBUS_DIV_SHIFT);
break;
case HCLK_PDBUS:
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
assert(src_clk_div - 1 <= 31);
rk_clrsetreg(&cru->clksel_con[2],
HCLK_PDBUS_SEL_MASK | HCLK_PDBUS_DIV_MASK,
HCLK_PDBUS_SEL_GPLL << HCLK_PDBUS_SEL_SHIFT |
(src_clk_div - 1) << HCLK_PDBUS_DIV_SHIFT);
break;
case PCLK_PDBUS:
case PCLK_WDT:
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
assert(src_clk_div - 1 <= 31);
rk_clrsetreg(&cru->clksel_con[3],
PCLK_PDBUS_SEL_MASK | PCLK_PDBUS_DIV_MASK,
PCLK_PDBUS_SEL_GPLL << PCLK_PDBUS_SEL_SHIFT |
(src_clk_div - 1) << PCLK_PDBUS_DIV_SHIFT);
break;
default:
printf("do not support this pdbus freq\n");
return -EINVAL;
}
return rv1126_pdbus_get_clk(priv, clk_id);
}
static ulong rv1126_pdphp_get_clk(struct rv1126_clk_priv *priv, ulong clk_id)
{
struct rv1126_cru *cru = priv->cru;
u32 con, div, parent;
switch (clk_id) {
case ACLK_PDPHP:
con = readl(&cru->clksel_con[53]);
div = (con & ACLK_PDPHP_DIV_MASK) >> ACLK_PDPHP_DIV_SHIFT;
parent = priv->gpll_hz;
break;
case HCLK_PDPHP:
con = readl(&cru->clksel_con[53]);
div = (con & HCLK_PDPHP_DIV_MASK) >> HCLK_PDPHP_DIV_SHIFT;
parent = priv->gpll_hz;
break;
default:
return -ENOENT;
}
return DIV_TO_RATE(parent, div);
}
static ulong rv1126_pdphp_set_clk(struct rv1126_clk_priv *priv, ulong clk_id,
ulong rate)
{
struct rv1126_cru *cru = priv->cru;
int src_clk_div;
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
assert(src_clk_div - 1 <= 31);
switch (clk_id) {
case ACLK_PDPHP:
rk_clrsetreg(&cru->clksel_con[53],
ACLK_PDPHP_SEL_MASK | ACLK_PDPHP_DIV_MASK,
ACLK_PDPHP_SEL_GPLL << ACLK_PDPHP_SEL_SHIFT |
(src_clk_div - 1) << ACLK_PDPHP_DIV_SHIFT);
break;
case HCLK_PDPHP:
rk_clrsetreg(&cru->clksel_con[53],
HCLK_PDPHP_DIV_MASK,
(src_clk_div - 1) << HCLK_PDPHP_DIV_SHIFT);
break;
default:
printf("do not support this pdphp freq\n");
return -EINVAL;
}
return rv1126_pdphp_get_clk(priv, clk_id);
}
static ulong rv1126_pdaudio_get_clk(struct rv1126_clk_priv *priv)
{
struct rv1126_cru *cru = priv->cru;
u32 con, div;
con = readl(&cru->clksel_con[26]);
div = (con & HCLK_PDAUDIO_DIV_MASK) >> HCLK_PDAUDIO_DIV_SHIFT;
return DIV_TO_RATE(priv->gpll_hz, div);
}
static ulong rv1126_pdaudio_set_clk(struct rv1126_clk_priv *priv, ulong rate)
{
struct rv1126_cru *cru = priv->cru;
int src_clk_div;
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
assert(src_clk_div - 1 <= 31);
rk_clrsetreg(&cru->clksel_con[26], HCLK_PDAUDIO_DIV_MASK,
(src_clk_div - 1) << HCLK_PDAUDIO_DIV_SHIFT);
return rv1126_pdaudio_get_clk(priv);
}
static ulong rv1126_i2c_get_clk(struct rv1126_clk_priv *priv, ulong clk_id)
{
struct rv1126_cru *cru = priv->cru;
u32 div, con;
switch (clk_id) {
case CLK_I2C1:
con = readl(&cru->clksel_con[5]);
div = (con & CLK_I2C1_DIV_MASK) >> CLK_I2C1_DIV_SHIFT;
break;
case CLK_I2C3:
con = readl(&cru->clksel_con[5]);
div = (con & CLK_I2C3_DIV_MASK) >> CLK_I2C3_DIV_SHIFT;
break;
case CLK_I2C4:
con = readl(&cru->clksel_con[6]);
div = (con & CLK_I2C4_DIV_MASK) >> CLK_I2C4_DIV_SHIFT;
break;
case CLK_I2C5:
con = readl(&cru->clksel_con[6]);
div = (con & CLK_I2C5_DIV_MASK) >> CLK_I2C5_DIV_SHIFT;
break;
default:
return -ENOENT;
}
return DIV_TO_RATE(priv->gpll_hz, div);
}
static ulong rv1126_i2c_set_clk(struct rv1126_clk_priv *priv, ulong clk_id,
ulong rate)
{
struct rv1126_cru *cru = priv->cru;
int src_clk_div;
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
assert(src_clk_div - 1 <= 127);
switch (clk_id) {
case CLK_I2C1:
rk_clrsetreg(&cru->clksel_con[5], CLK_I2C1_DIV_MASK,
(src_clk_div - 1) << CLK_I2C1_DIV_SHIFT);
break;
case CLK_I2C3:
rk_clrsetreg(&cru->clksel_con[5], CLK_I2C3_DIV_MASK,
(src_clk_div - 1) << CLK_I2C3_DIV_SHIFT);
break;
case CLK_I2C4:
rk_clrsetreg(&cru->clksel_con[6], CLK_I2C4_DIV_MASK,
(src_clk_div - 1) << CLK_I2C4_DIV_SHIFT);
break;
case CLK_I2C5:
rk_clrsetreg(&cru->clksel_con[6], CLK_I2C5_DIV_MASK,
(src_clk_div - 1) << CLK_I2C5_DIV_SHIFT);
break;
default:
return -ENOENT;
}
return rv1126_i2c_get_clk(priv, clk_id);
}
static ulong rv1126_spi_get_clk(struct rv1126_clk_priv *priv)
{
struct rv1126_cru *cru = priv->cru;
u32 div, con;
con = readl(&cru->clksel_con[8]);
div = (con & CLK_SPI1_DIV_MASK) >> CLK_SPI1_DIV_SHIFT;
return DIV_TO_RATE(priv->gpll_hz, div);
}
static ulong rv1126_spi_set_clk(struct rv1126_clk_priv *priv, ulong rate)
{
struct rv1126_cru *cru = priv->cru;
int src_clk_div;
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
assert(src_clk_div - 1 <= 127);
rk_clrsetreg(&cru->clksel_con[8],
CLK_SPI1_SEL_MASK | CLK_SPI1_DIV_MASK,
CLK_SPI1_SEL_GPLL << CLK_SPI1_SEL_SHIFT |
(src_clk_div - 1) << CLK_SPI1_DIV_SHIFT);
return rv1126_spi_get_clk(priv);
}
static ulong rv1126_pwm_get_clk(struct rv1126_clk_priv *priv)
{
struct rv1126_cru *cru = priv->cru;
u32 div, sel, con;
con = readl(&cru->clksel_con[9]);
sel = (con & CLK_PWM2_SEL_MASK) >> CLK_PWM2_SEL_SHIFT;
div = (con & CLK_PWM2_DIV_MASK) >> CLK_PWM2_DIV_SHIFT;
if (sel == CLK_PWM2_SEL_XIN24M)
return OSC_HZ;
return DIV_TO_RATE(priv->gpll_hz, div);
}
static ulong rv1126_pwm_set_clk(struct rv1126_clk_priv *priv, ulong rate)
{
struct rv1126_cru *cru = priv->cru;
int src_clk_div;
if (rate == OSC_HZ) {
rk_clrsetreg(&cru->clksel_con[9], CLK_PWM2_SEL_MASK,
CLK_PWM2_SEL_XIN24M << CLK_PWM2_SEL_SHIFT);
rk_clrsetreg(&cru->clksel_con[9], CLK_PWM2_DIV_MASK, 0);
} else {
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
assert(src_clk_div - 1 <= 127);
rk_clrsetreg(&cru->clksel_con[9], CLK_PWM2_DIV_MASK,
(src_clk_div - 1) << CLK_PWM2_DIV_SHIFT);
rk_clrsetreg(&cru->clksel_con[9], CLK_PWM2_SEL_MASK,
CLK_PWM2_SEL_GPLL << CLK_PWM2_SEL_SHIFT);
}
return rv1126_pwm_get_clk(priv);
}
static ulong rv1126_saradc_get_clk(struct rv1126_clk_priv *priv)
{
struct rv1126_cru *cru = priv->cru;
u32 div, con;
con = readl(&cru->clksel_con[20]);
div = (con & CLK_SARADC_DIV_MASK) >> CLK_SARADC_DIV_SHIFT;
return DIV_TO_RATE(OSC_HZ, div);
}
static ulong rv1126_saradc_set_clk(struct rv1126_clk_priv *priv, ulong rate)
{
struct rv1126_cru *cru = priv->cru;
int src_clk_div;
src_clk_div = DIV_ROUND_UP(OSC_HZ, rate);
assert(src_clk_div - 1 <= 2047);
rk_clrsetreg(&cru->clksel_con[20], CLK_SARADC_DIV_MASK,
(src_clk_div - 1) << CLK_SARADC_DIV_SHIFT);
return rv1126_saradc_get_clk(priv);
}
static ulong rv1126_crypto_get_clk(struct rv1126_clk_priv *priv, ulong clk_id)
{
struct rv1126_cru *cru = priv->cru;
u32 div, sel, con, parent;
switch (clk_id) {
case CLK_CRYPTO_CORE:
con = readl(&cru->clksel_con[7]);
div = (con & CLK_CRYPTO_CORE_DIV_MASK) >> CLK_CRYPTO_CORE_DIV_SHIFT;
sel = (con & CLK_CRYPTO_CORE_SEL_MASK) >> CLK_CRYPTO_CORE_SEL_SHIFT;
if (sel == CLK_CRYPTO_CORE_SEL_GPLL)
parent = priv->gpll_hz;
else if (sel == CLK_CRYPTO_CORE_SEL_CPLL)
parent = priv->cpll_hz;
else
return -ENOENT;
break;
case CLK_CRYPTO_PKA:
con = readl(&cru->clksel_con[7]);
div = (con & CLK_CRYPTO_PKA_DIV_MASK) >> CLK_CRYPTO_PKA_DIV_SHIFT;
sel = (con & CLK_CRYPTO_PKA_SEL_MASK) >> CLK_CRYPTO_PKA_SEL_SHIFT;
if (sel == CLK_CRYPTO_PKA_SEL_GPLL)
parent = priv->gpll_hz;
else if (sel == CLK_CRYPTO_PKA_SEL_CPLL)
parent = priv->cpll_hz;
else
return -ENOENT;
break;
case ACLK_CRYPTO:
con = readl(&cru->clksel_con[4]);
div = (con & ACLK_CRYPTO_DIV_MASK) >> ACLK_CRYPTO_DIV_SHIFT;
sel = (con & ACLK_CRYPTO_SEL_MASK) >> ACLK_CRYPTO_SEL_SHIFT;
if (sel == ACLK_CRYPTO_SEL_GPLL)
parent = priv->gpll_hz;
else if (sel == ACLK_CRYPTO_SEL_CPLL)
parent = priv->cpll_hz;
else
return -ENOENT;
break;
default:
return -ENOENT;
}
return DIV_TO_RATE(parent, div);
}
static ulong rv1126_crypto_set_clk(struct rv1126_clk_priv *priv, ulong clk_id,
ulong rate)
{
struct rv1126_cru *cru = priv->cru;
int src_clk_div;
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
assert(src_clk_div - 1 <= 31);
switch (clk_id) {
case CLK_CRYPTO_CORE:
rk_clrsetreg(&cru->clksel_con[7],
CLK_CRYPTO_CORE_SEL_MASK |
CLK_CRYPTO_CORE_DIV_MASK,
CLK_CRYPTO_CORE_SEL_GPLL <<
CLK_CRYPTO_CORE_SEL_SHIFT |
(src_clk_div - 1) << CLK_CRYPTO_CORE_DIV_SHIFT);
break;
case CLK_CRYPTO_PKA:
rk_clrsetreg(&cru->clksel_con[7],
CLK_CRYPTO_PKA_SEL_MASK |
CLK_CRYPTO_PKA_DIV_MASK,
CLK_CRYPTO_PKA_SEL_GPLL <<
CLK_CRYPTO_PKA_SEL_SHIFT |
(src_clk_div - 1) << CLK_CRYPTO_PKA_DIV_SHIFT);
break;
case ACLK_CRYPTO:
rk_clrsetreg(&cru->clksel_con[4],
ACLK_CRYPTO_SEL_MASK | ACLK_CRYPTO_DIV_MASK,
ACLK_CRYPTO_SEL_GPLL << ACLK_CRYPTO_SEL_SHIFT |
(src_clk_div - 1) << ACLK_CRYPTO_DIV_SHIFT);
break;
default:
return -ENOENT;
}
return rv1126_crypto_get_clk(priv, clk_id);
}
static ulong rv1126_mmc_get_clk(struct rv1126_clk_priv *priv, ulong clk_id)
{
struct rv1126_cru *cru = priv->cru;
u32 div, sel, con, con_id;
switch (clk_id) {
case HCLK_SDMMC:
case CLK_SDMMC:
con_id = 55;
break;
case HCLK_SDIO:
case CLK_SDIO:
con_id = 56;
break;
case HCLK_EMMC:
case CLK_EMMC:
case SCLK_EMMC_SAMPLE:
con_id = 57;
break;
default:
return -ENOENT;
}
con = readl(&cru->clksel_con[con_id]);
div = (con & EMMC_DIV_MASK) >> EMMC_DIV_SHIFT;
sel = (con & EMMC_SEL_MASK) >> EMMC_SEL_SHIFT;
if (sel == EMMC_SEL_GPLL)
return DIV_TO_RATE(priv->gpll_hz, div) / 2;
else if (sel == EMMC_SEL_CPLL)
return DIV_TO_RATE(priv->cpll_hz, div) / 2;
else if (sel == EMMC_SEL_XIN24M)
return DIV_TO_RATE(OSC_HZ, div) / 2;
return -ENOENT;
}
static ulong rv1126_mmc_set_clk(struct rv1126_clk_priv *priv, ulong clk_id,
ulong rate)
{
struct rv1126_cru *cru = priv->cru;
int src_clk_div;
u32 con_id;
switch (clk_id) {
case HCLK_SDMMC:
case CLK_SDMMC:
con_id = 55;
break;
case HCLK_SDIO:
case CLK_SDIO:
con_id = 56;
break;
case HCLK_EMMC:
case CLK_EMMC:
con_id = 57;
break;
default:
return -ENOENT;
}
/* Select clk_sdmmc/emmc source from GPLL by default */
/* mmc clock defaulg div 2 internal, need provide double in cru */
src_clk_div = DIV_ROUND_UP(priv->gpll_hz / 2, rate);
if (src_clk_div > 127) {
/* use 24MHz source for 400KHz clock */
src_clk_div = DIV_ROUND_UP(OSC_HZ / 2, rate);
rk_clrsetreg(&cru->clksel_con[con_id],
EMMC_SEL_MASK | EMMC_DIV_MASK,
EMMC_SEL_XIN24M << EMMC_SEL_SHIFT |
(src_clk_div - 1) << EMMC_DIV_SHIFT);
} else {
rk_clrsetreg(&cru->clksel_con[con_id],
EMMC_SEL_MASK | EMMC_DIV_MASK,
EMMC_SEL_GPLL << EMMC_SEL_SHIFT |
(src_clk_div - 1) << EMMC_DIV_SHIFT);
}
return rv1126_mmc_get_clk(priv, clk_id);
}
static ulong rv1126_sfc_get_clk(struct rv1126_clk_priv *priv)
{
struct rv1126_cru *cru = priv->cru;
u32 div, sel, con, parent;
con = readl(&cru->clksel_con[58]);
div = (con & SCLK_SFC_DIV_MASK) >> SCLK_SFC_DIV_SHIFT;
sel = (con & SCLK_SFC_SEL_MASK) >> SCLK_SFC_SEL_SHIFT;
if (sel == SCLK_SFC_SEL_GPLL)
parent = priv->gpll_hz;
else if (sel == SCLK_SFC_SEL_CPLL)
parent = priv->cpll_hz;
else
return -ENOENT;
return DIV_TO_RATE(parent, div);
}
static ulong rv1126_sfc_set_clk(struct rv1126_clk_priv *priv, ulong rate)
{
struct rv1126_cru *cru = priv->cru;
int src_clk_div;
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
rk_clrsetreg(&cru->clksel_con[58],
SCLK_SFC_SEL_MASK | SCLK_SFC_DIV_MASK,
SCLK_SFC_SEL_GPLL << SCLK_SFC_SEL_SHIFT |
(src_clk_div - 1) << SCLK_SFC_DIV_SHIFT);
return rv1126_sfc_get_clk(priv);
}
static ulong rv1126_nand_get_clk(struct rv1126_clk_priv *priv)
{
struct rv1126_cru *cru = priv->cru;
u32 div, sel, con, parent;
con = readl(&cru->clksel_con[59]);
div = (con & CLK_NANDC_DIV_MASK) >> CLK_NANDC_DIV_SHIFT;
sel = (con & CLK_NANDC_SEL_MASK) >> CLK_NANDC_SEL_SHIFT;
if (sel == CLK_NANDC_SEL_GPLL)
parent = priv->gpll_hz;
else if (sel == CLK_NANDC_SEL_CPLL)
parent = priv->cpll_hz;
else
return -ENOENT;
return DIV_TO_RATE(parent, div);
}
static ulong rv1126_nand_set_clk(struct rv1126_clk_priv *priv, ulong rate)
{
struct rv1126_cru *cru = priv->cru;
int src_clk_div;
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
rk_clrsetreg(&cru->clksel_con[59],
CLK_NANDC_SEL_MASK | CLK_NANDC_DIV_MASK,
CLK_NANDC_SEL_GPLL << CLK_NANDC_SEL_SHIFT |
(src_clk_div - 1) << CLK_NANDC_DIV_SHIFT);
return rv1126_nand_get_clk(priv);
}
static ulong rv1126_aclk_vop_get_clk(struct rv1126_clk_priv *priv)
{
struct rv1126_cru *cru = priv->cru;
u32 div, sel, con, parent;
con = readl(&cru->clksel_con[45]);
div = (con & ACLK_PDVO_DIV_MASK) >> ACLK_PDVO_DIV_SHIFT;
sel = (con & ACLK_PDVO_SEL_MASK) >> ACLK_PDVO_SEL_SHIFT;
if (sel == ACLK_PDVO_SEL_GPLL)
parent = priv->gpll_hz;
else if (sel == ACLK_PDVO_SEL_CPLL)
parent = priv->cpll_hz;
else
return -ENOENT;
return DIV_TO_RATE(parent, div);
}
static ulong rv1126_aclk_vop_set_clk(struct rv1126_clk_priv *priv, ulong rate)
{
struct rv1126_cru *cru = priv->cru;
int src_clk_div;
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
assert(src_clk_div - 1 <= 31);
rk_clrsetreg(&cru->clksel_con[45],
ACLK_PDVO_SEL_MASK | ACLK_PDVO_DIV_MASK,
ACLK_PDVO_SEL_GPLL << ACLK_PDVO_SEL_SHIFT |
(src_clk_div - 1) << ACLK_PDVO_DIV_SHIFT);
return rv1126_aclk_vop_get_clk(priv);
}
static ulong rv1126_dclk_vop_get_clk(struct rv1126_clk_priv *priv)
{
struct rv1126_cru *cru = priv->cru;
u32 div, sel, con, parent;
con = readl(&cru->clksel_con[47]);
div = (con & DCLK_VOP_DIV_MASK) >> DCLK_VOP_DIV_SHIFT;
sel = (con & DCLK_VOP_SEL_MASK) >> DCLK_VOP_SEL_SHIFT;
if (sel == DCLK_VOP_SEL_GPLL)
parent = priv->gpll_hz;
else if (sel == DCLK_VOP_SEL_CPLL)
parent = priv->cpll_hz;
else
return -ENOENT;
return DIV_TO_RATE(parent, div);
}
static ulong rv1126_dclk_vop_set_clk(struct rv1126_clk_priv *priv, ulong rate)
{
struct rv1126_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_SEL_CPLL; i++) {
switch (i) {
case DCLK_VOP_SEL_GPLL:
pll_rate = priv->gpll_hz;
break;
case DCLK_VOP_SEL_CPLL:
pll_rate = priv->cpll_hz;
break;
default:
printf("do not support this vop pll sel\n");
return -EINVAL;
}
div = DIV_ROUND_UP(pll_rate, rate);
if (div > 255)
continue;
now = pll_rate / div;
if (abs(rate - now) < abs(rate - 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) {
rk_clrsetreg(&cru->clksel_con[47],
DCLK_VOP_SEL_MASK | DCLK_VOP_DIV_MASK,
best_sel << DCLK_VOP_SEL_SHIFT |
(best_div - 1) << DCLK_VOP_DIV_SHIFT);
} else {
printf("do not support this vop freq %lu\n", rate);
return -EINVAL;
}
return rv1126_dclk_vop_get_clk(priv);
}
static ulong rv1126_scr1_get_clk(struct rv1126_clk_priv *priv)
{
struct rv1126_cru *cru = priv->cru;
u32 div, sel, con, parent;
con = readl(&cru->clksel_con[3]);
div = (con & CLK_SCR1_DIV_MASK) >> CLK_SCR1_DIV_SHIFT;
sel = (con & CLK_SCR1_SEL_MASK) >> CLK_SCR1_SEL_SHIFT;
if (sel == CLK_SCR1_SEL_GPLL)
parent = priv->gpll_hz;
else if (sel == CLK_SCR1_SEL_CPLL)
parent = priv->cpll_hz;
else
return -ENOENT;
return DIV_TO_RATE(parent, div);
}
static ulong rv1126_scr1_set_clk(struct rv1126_clk_priv *priv, ulong rate)
{
struct rv1126_cru *cru = priv->cru;
int src_clk_div;
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
assert(src_clk_div - 1 <= 31);
rk_clrsetreg(&cru->clksel_con[3],
CLK_SCR1_SEL_MASK | CLK_SCR1_DIV_MASK,
CLK_SCR1_SEL_GPLL << CLK_SCR1_SEL_SHIFT |
(src_clk_div - 1) << CLK_SCR1_DIV_SHIFT);
return rv1126_scr1_get_clk(priv);
}
static ulong rv1126_gmac_src_get_clk(struct rv1126_clk_priv *priv)
{
struct rv1126_cru *cru = priv->cru;
u32 div, sel, con, parent;
con = readl(&cru->clksel_con[63]);
div = (con & CLK_GMAC_SRC_DIV_MASK) >> CLK_GMAC_SRC_DIV_SHIFT;
sel = (con & CLK_GMAC_SRC_SEL_MASK) >> CLK_GMAC_SRC_SEL_SHIFT;
if (sel == CLK_GMAC_SRC_SEL_CPLL)
parent = priv->cpll_hz;
else if (sel == CLK_GMAC_SRC_SEL_GPLL)
parent = priv->gpll_hz;
else
return -ENOENT;
return DIV_TO_RATE(parent, div);
}
static ulong rv1126_gmac_src_set_clk(struct rv1126_clk_priv *priv, ulong rate)
{
struct rv1126_cru *cru = priv->cru;
int src_clk_div;
src_clk_div = DIV_ROUND_UP(priv->cpll_hz, rate);
assert(src_clk_div - 1 <= 31);
rk_clrsetreg(&cru->clksel_con[63],
CLK_GMAC_SRC_SEL_MASK | CLK_GMAC_SRC_DIV_MASK,
CLK_GMAC_SRC_SEL_CPLL << CLK_GMAC_SRC_SEL_SHIFT |
(src_clk_div - 1) << CLK_GMAC_SRC_DIV_SHIFT);
return rv1126_gmac_src_get_clk(priv);
}
static ulong rv1126_gmac_out_get_clk(struct rv1126_clk_priv *priv)
{
struct rv1126_cru *cru = priv->cru;
u32 div, sel, con, parent;
con = readl(&cru->clksel_con[61]);
div = (con & CLK_GMAC_OUT_DIV_MASK) >> CLK_GMAC_OUT_DIV_SHIFT;
sel = (con & CLK_GMAC_OUT_SEL_MASK) >> CLK_GMAC_OUT_SEL_SHIFT;
if (sel == CLK_GMAC_OUT_SEL_CPLL)
parent = priv->cpll_hz;
else if (sel == CLK_GMAC_OUT_SEL_GPLL)
parent = priv->gpll_hz;
else
return -ENOENT;
return DIV_TO_RATE(parent, div);
}
static ulong rv1126_gmac_out_set_clk(struct rv1126_clk_priv *priv, ulong rate)
{
struct rv1126_cru *cru = priv->cru;
int src_clk_div;
src_clk_div = DIV_ROUND_UP(priv->cpll_hz, rate);
assert(src_clk_div - 1 <= 31);
rk_clrsetreg(&cru->clksel_con[61],
CLK_GMAC_OUT_SEL_MASK | CLK_GMAC_OUT_DIV_MASK,
CLK_GMAC_OUT_SEL_CPLL << CLK_GMAC_OUT_SEL_SHIFT |
(src_clk_div - 1) << CLK_GMAC_OUT_DIV_SHIFT);
return rv1126_gmac_out_get_clk(priv);
}
static ulong rv1126_gmac_tx_rx_set_clk(struct rv1126_clk_priv *priv, ulong rate)
{
struct rv1126_cru *cru = priv->cru;
u32 con, sel, div_sel;
con = readl(&cru->gmac_con);
sel = (con & GMAC_MODE_SEL_MASK) >> GMAC_MODE_SEL_SHIFT;
if (sel == GMAC_RGMII_MODE) {
if (rate == 2500000)
div_sel = RGMII_CLK_DIV50;
else if (rate == 25000000)
div_sel = RGMII_CLK_DIV5;
else
div_sel = RGMII_CLK_DIV0;
rk_clrsetreg(&cru->gmac_con, RGMII_CLK_SEL_MASK,
div_sel << RGMII_CLK_SEL_SHIFT);
} else if (sel == GMAC_RMII_MODE) {
if (rate == 2500000)
div_sel = RMII_CLK_DIV20;
else
div_sel = RMII_CLK_DIV2;
rk_clrsetreg(&cru->gmac_con, RMII_CLK_SEL_MASK,
div_sel << RMII_CLK_SEL_SHIFT);
}
return 0;
}
static ulong rv1126_pclk_gmac_get_clk(struct rv1126_clk_priv *priv)
{
struct rv1126_cru *cru = priv->cru;
u32 div, con, parent;
parent = rv1126_pdphp_get_clk(priv, ACLK_PDPHP);
con = readl(&cru->clksel_con[63]);
div = (con & PCLK_GMAC_DIV_MASK) >> PCLK_GMAC_DIV_SHIFT;
return DIV_TO_RATE(parent, div);
}
static ulong rv1126_dclk_decom_get_clk(struct rv1126_clk_priv *priv)
{
struct rv1126_cru *cru = priv->cru;
u32 div, sel, con, parent;
con = readl(&cru->clksel_con[25]);
div = (con & DCLK_DECOM_DIV_MASK) >> DCLK_DECOM_DIV_SHIFT;
sel = (con & DCLK_DECOM_SEL_MASK) >> DCLK_DECOM_SEL_SHIFT;
if (sel == DCLK_DECOM_SEL_GPLL)
parent = priv->gpll_hz;
else if (sel == DCLK_DECOM_SEL_CPLL)
parent = priv->cpll_hz;
else
return -ENOENT;
return DIV_TO_RATE(parent, div);
}
static ulong rv1126_dclk_decom_set_clk(struct rv1126_clk_priv *priv, ulong rate)
{
struct rv1126_cru *cru = priv->cru;
u32 src_clk_div;
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, rate);
assert(src_clk_div - 1 <= 127);
rk_clrsetreg(&cru->clksel_con[25],
DCLK_DECOM_SEL_MASK | DCLK_DECOM_DIV_MASK,
DCLK_DECOM_SEL_GPLL << DCLK_DECOM_SEL_SHIFT |
(src_clk_div - 1) << DCLK_DECOM_DIV_SHIFT);
return rv1126_dclk_decom_get_clk(priv);
}
static ulong rv1126_clk_get_rate(struct clk *clk)
{
struct rv1126_clk_priv *priv = dev_get_priv(clk->dev);
ulong rate = 0;
if (!priv->gpll_hz) {
printf("%s gpll=%lu\n", __func__, priv->gpll_hz);
return -ENOENT;
}
switch (clk->id) {
case PLL_APLL:
case ARMCLK:
rate = rockchip_pll_get_rate(&rv1126_pll_clks[APLL], priv->cru,
APLL);
break;
case PLL_CPLL:
rate = rockchip_pll_get_rate(&rv1126_pll_clks[CPLL], priv->cru,
CPLL);
break;
case PLL_HPLL:
rate = rockchip_pll_get_rate(&rv1126_pll_clks[HPLL], priv->cru,
HPLL);
break;
case PLL_DPLL:
rate = rockchip_pll_get_rate(&rv1126_pll_clks[DPLL], priv->cru,
DPLL);
break;
case HCLK_PDCORE_NIU:
rate = rv1126_pdcore_get_clk(priv);
break;
case ACLK_PDBUS:
case HCLK_PDBUS:
case PCLK_PDBUS:
case PCLK_WDT:
rate = rv1126_pdbus_get_clk(priv, clk->id);
break;
case ACLK_PDPHP:
case HCLK_PDPHP:
rate = rv1126_pdphp_get_clk(priv, clk->id);
break;
case HCLK_PDAUDIO:
rate = rv1126_pdaudio_get_clk(priv);
break;
case CLK_I2C1:
case CLK_I2C3:
case CLK_I2C4:
case CLK_I2C5:
rate = rv1126_i2c_get_clk(priv, clk->id);
break;
case CLK_SPI1:
rate = rv1126_spi_get_clk(priv);
break;
case CLK_PWM2:
rate = rv1126_pwm_get_clk(priv);
break;
case CLK_SARADC:
rate = rv1126_saradc_get_clk(priv);
break;
case CLK_CRYPTO_CORE:
case CLK_CRYPTO_PKA:
case ACLK_CRYPTO:
rate = rv1126_crypto_get_clk(priv, clk->id);
break;
case CLK_SDMMC:
case HCLK_SDMMC:
case CLK_SDIO:
case HCLK_SDIO:
case CLK_EMMC:
case HCLK_EMMC:
case SCLK_EMMC_SAMPLE:
rate = rv1126_mmc_get_clk(priv, clk->id);
break;
case SCLK_SFC:
rate = rv1126_sfc_get_clk(priv);
break;
case CLK_NANDC:
rate = rv1126_nand_get_clk(priv);
break;
case ACLK_PDVO:
case ACLK_VOP:
rate = rv1126_aclk_vop_get_clk(priv);
break;
case DCLK_VOP:
rate = rv1126_dclk_vop_get_clk(priv);
break;
case CLK_SCR1_CORE:
rate = rv1126_scr1_get_clk(priv);
break;
case CLK_GMAC_SRC:
rate = rv1126_gmac_src_get_clk(priv);
break;
case CLK_GMAC_ETHERNET_OUT:
rate = rv1126_gmac_out_get_clk(priv);
break;
case PCLK_GMAC:
rate = rv1126_pclk_gmac_get_clk(priv);
break;
case DCLK_DECOM:
rate = rv1126_dclk_decom_get_clk(priv);
break;
default:
debug("%s: Unsupported CLK#%ld\n", __func__, clk->id);
return -ENOENT;
}
return rate;
};
static ulong rv1126_clk_set_rate(struct clk *clk, ulong rate)
{
struct rv1126_clk_priv *priv = dev_get_priv(clk->dev);
ulong ret = 0;
if (!priv->gpll_hz) {
printf("%s gpll=%lu\n", __func__, priv->gpll_hz);
return -ENOENT;
}
switch (clk->id) {
case PLL_APLL:
case ARMCLK:
if (priv->armclk_hz)
rv1126_armclk_set_clk(priv, rate);
priv->armclk_hz = rate;
break;
case PLL_CPLL:
ret = rockchip_pll_set_rate(&rv1126_pll_clks[CPLL], priv->cru,
CPLL, rate);
break;
case PLL_HPLL:
ret = rockchip_pll_set_rate(&rv1126_pll_clks[HPLL], priv->cru,
HPLL, rate);
break;
case ACLK_PDBUS:
case HCLK_PDBUS:
case PCLK_PDBUS:
case PCLK_WDT:
ret = rv1126_pdbus_set_clk(priv, clk->id, rate);
break;
case ACLK_PDPHP:
case HCLK_PDPHP:
ret = rv1126_pdphp_set_clk(priv, clk->id, rate);
break;
case HCLK_PDCORE_NIU:
ret = rv1126_pdcore_set_clk(priv, rate);
break;
case HCLK_PDAUDIO:
ret = rv1126_pdaudio_set_clk(priv, rate);
break;
case CLK_I2C1:
case CLK_I2C3:
case CLK_I2C4:
case CLK_I2C5:
ret = rv1126_i2c_set_clk(priv, clk->id, rate);
break;
case CLK_SPI1:
ret = rv1126_spi_set_clk(priv, rate);
break;
case CLK_PWM2:
ret = rv1126_pwm_set_clk(priv, rate);
break;
case CLK_SARADC:
ret = rv1126_saradc_set_clk(priv, rate);
break;
case CLK_CRYPTO_CORE:
case CLK_CRYPTO_PKA:
case ACLK_CRYPTO:
ret = rv1126_crypto_set_clk(priv, clk->id, rate);
break;
case CLK_SDMMC:
case HCLK_SDMMC:
case CLK_SDIO:
case HCLK_SDIO:
case CLK_EMMC:
case HCLK_EMMC:
ret = rv1126_mmc_set_clk(priv, clk->id, rate);
break;
case SCLK_SFC:
ret = rv1126_sfc_set_clk(priv, rate);
break;
case CLK_NANDC:
ret = rv1126_nand_set_clk(priv, rate);
break;
case ACLK_PDVO:
case ACLK_VOP:
ret = rv1126_aclk_vop_set_clk(priv, rate);
break;
case DCLK_VOP:
ret = rv1126_dclk_vop_set_clk(priv, rate);
break;
case CLK_SCR1_CORE:
ret = rv1126_scr1_set_clk(priv, rate);
break;
case CLK_GMAC_SRC:
ret = rv1126_gmac_src_set_clk(priv, rate);
break;
case CLK_GMAC_ETHERNET_OUT:
ret = rv1126_gmac_out_set_clk(priv, rate);
break;
case CLK_GMAC_TX_RX:
ret = rv1126_gmac_tx_rx_set_clk(priv, rate);
break;
case DCLK_DECOM:
ret = rv1126_dclk_decom_set_clk(priv, rate);
break;
default:
debug("%s: Unsupported CLK#%ld\n", __func__, clk->id);
return -ENOENT;
}
return ret;
};
#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
static int rv1126_gmac_src_set_parent(struct clk *clk, struct clk *parent)
{
struct rv1126_clk_priv *priv = dev_get_priv(clk->dev);
struct rv1126_grf *grf = priv->grf;
if (parent->id == CLK_GMAC_SRC_M0)
rk_clrsetreg(&grf->iofunc_con1, GMAC_SRC_SEL_MASK,
GMAC_SRC_SEL_M0 << GMAC_SRC_SEL_SHIFT);
else if (parent->id == CLK_GMAC_SRC_M1)
rk_clrsetreg(&grf->iofunc_con1, GMAC_SRC_SEL_MASK,
GMAC_SRC_SEL_M1 << GMAC_SRC_SEL_SHIFT);
return 0;
}
static int rv1126_gmac_src_m0_set_parent(struct clk *clk, struct clk *parent)
{
struct rv1126_clk_priv *priv = dev_get_priv(clk->dev);
struct rv1126_cru *cru = priv->cru;
if (parent->id == CLK_GMAC_DIV)
rk_clrsetreg(&cru->gmac_con, GMAC_SRC_M0_SEL_MASK,
GMAC_SRC_M0_SEL_INT << GMAC_SRC_M0_SEL_SHIFT);
else
rk_clrsetreg(&cru->gmac_con, GMAC_SRC_M0_SEL_MASK,
GMAC_SRC_M0_SEL_EXT << GMAC_SRC_M0_SEL_SHIFT);
return 0;
}
static int rv1126_gmac_src_m1_set_parent(struct clk *clk, struct clk *parent)
{
struct rv1126_clk_priv *priv = dev_get_priv(clk->dev);
struct rv1126_cru *cru = priv->cru;
if (parent->id == CLK_GMAC_DIV)
rk_clrsetreg(&cru->gmac_con, GMAC_SRC_M1_SEL_MASK,
GMAC_SRC_M1_SEL_INT << GMAC_SRC_M1_SEL_SHIFT);
else
rk_clrsetreg(&cru->gmac_con, GMAC_SRC_M1_SEL_MASK,
GMAC_SRC_M1_SEL_EXT << GMAC_SRC_M1_SEL_SHIFT);
return 0;
}
static int rv1126_gmac_tx_rx_set_parent(struct clk *clk, struct clk *parent)
{
struct rv1126_clk_priv *priv = dev_get_priv(clk->dev);
struct rv1126_cru *cru = priv->cru;
if (parent->id == RGMII_MODE_CLK)
rk_clrsetreg(&cru->gmac_con, GMAC_MODE_SEL_MASK,
GMAC_RGMII_MODE << GMAC_MODE_SEL_SHIFT);
else
rk_clrsetreg(&cru->gmac_con, GMAC_MODE_SEL_MASK,
GMAC_RMII_MODE << GMAC_MODE_SEL_SHIFT);
return 0;
}
static int rv1126_clk_set_parent(struct clk *clk, struct clk *parent)
{
switch (clk->id) {
case CLK_GMAC_SRC:
return rv1126_gmac_src_set_parent(clk, parent);
case CLK_GMAC_SRC_M0:
return rv1126_gmac_src_m0_set_parent(clk, parent);
case CLK_GMAC_SRC_M1:
return rv1126_gmac_src_m1_set_parent(clk, parent);
case CLK_GMAC_TX_RX:
return rv1126_gmac_tx_rx_set_parent(clk, parent);
default:
return -ENOENT;
}
return 0;
}
#endif
static struct clk_ops rv1126_clk_ops = {
.get_rate = rv1126_clk_get_rate,
.set_rate = rv1126_clk_set_rate,
#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
.set_parent = rv1126_clk_set_parent,
#endif
};
static ulong rv1126_gpll_set_rate(struct rv1126_clk_priv *priv,
struct rv1126_pmuclk_priv *pmu_priv,
ulong rate)
{
ulong emmc_rate, sfc_rate, nandc_rate;
bool restore = false;
if (priv->gpll_hz != OSC_HZ) {
emmc_rate = rv1126_mmc_get_clk(priv, CLK_EMMC);
sfc_rate = rv1126_sfc_get_clk(priv);
nandc_rate = rv1126_nand_get_clk(priv);
debug("%s emmc=%lu, sfc=%lu, nandc=%lu\n", __func__,
emmc_rate, sfc_rate, nandc_rate);
restore = true;
}
/*
* the child div is big enough for gpll 1188MHz,
* even maskrom has change some clocks.
*/
if (rockchip_pll_set_rate(&rv1126_pll_clks[GPLL],
pmu_priv->pmucru, GPLL, rate))
return -EINVAL;
pmu_priv->gpll_hz = rate;
priv->gpll_hz = rate;
if (restore) {
rv1126_mmc_set_clk(priv, CLK_EMMC, emmc_rate);
rv1126_sfc_set_clk(priv, sfc_rate);
rv1126_nand_set_clk(priv, nandc_rate);
}
return 0;
}
static int rv1126_gpll_set_clk(struct rv1126_clk_priv *priv, ulong rate)
{
struct udevice *pmucru_dev;
struct rv1126_pmuclk_priv *pmu_priv;
int ret;
ret = uclass_get_device_by_driver(UCLASS_CLK,
DM_DRIVER_GET(rockchip_rv1126_pmucru),
&pmucru_dev);
if (ret) {
printf("%s: could not find pmucru device\n", __func__);
return ret;
}
pmu_priv = dev_get_priv(pmucru_dev);
priv->gpll_hz = pmu_priv->gpll_hz;
if (rv1126_gpll_set_rate(priv, pmu_priv, rate)) {
printf("%s: failed to set gpll rate %lu\n", __func__, rate);
return -EINVAL;
}
rv1126_pdpmu_set_pmuclk(pmu_priv, PCLK_PDPMU_HZ);
rv1126_rtc32k_set_pmuclk(pmu_priv, CLK_OSC0_DIV_HZ);
return 0;
}
static void rv1126_clk_init(struct rv1126_clk_priv *priv)
{
int ret;
priv->sync_kernel = false;
if (!priv->armclk_enter_hz) {
priv->armclk_enter_hz =
rockchip_pll_get_rate(&rv1126_pll_clks[APLL],
priv->cru, APLL);
priv->armclk_init_hz = priv->armclk_enter_hz;
}
if (priv->armclk_init_hz != APLL_HZ) {
ret = rv1126_armclk_set_clk(priv, APLL_HZ);
if (!ret)
priv->armclk_init_hz = APLL_HZ;
}
if (priv->cpll_hz != CPLL_HZ) {
ret = rockchip_pll_set_rate(&rv1126_pll_clks[CPLL], priv->cru,
CPLL, CPLL_HZ);
if (!ret)
priv->cpll_hz = CPLL_HZ;
}
if (priv->hpll_hz != HPLL_HZ) {
ret = rockchip_pll_set_rate(&rv1126_pll_clks[HPLL], priv->cru,
HPLL, HPLL_HZ);
if (!ret)
priv->hpll_hz = HPLL_HZ;
}
if (priv->gpll_hz != GPLL_HZ)
rv1126_gpll_set_clk(priv, GPLL_HZ);
rv1126_pdbus_set_clk(priv, ACLK_PDBUS, ACLK_PDBUS_HZ);
rv1126_pdbus_set_clk(priv, HCLK_PDBUS, HCLK_PDBUS_HZ);
rv1126_pdbus_set_clk(priv, PCLK_PDBUS, PCLK_PDBUS_HZ);
rv1126_pdphp_set_clk(priv, ACLK_PDPHP, ACLK_PDPHP_HZ);
rv1126_pdphp_set_clk(priv, HCLK_PDPHP, HCLK_PDPHP_HZ);
rv1126_pdcore_set_clk(priv, HCLK_PDCORE_HZ);
rv1126_pdaudio_set_clk(priv, HCLK_PDAUDIO_HZ);
}
static int rv1126_clk_probe(struct udevice *dev)
{
struct rv1126_clk_priv *priv = dev_get_priv(dev);
int ret;
priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
if (IS_ERR(priv->grf))
return PTR_ERR(priv->grf);
rv1126_clk_init(priv);
/* 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);
else
priv->sync_kernel = true;
return 0;
}
static int rv1126_clk_of_to_plat(struct udevice *dev)
{
struct rv1126_clk_priv *priv = dev_get_priv(dev);
priv->cru = dev_read_addr_ptr(dev);
return 0;
}
static int rv1126_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 rv1126_cru,
glb_srst_fst);
priv->glb_srst_snd_value = offsetof(struct rv1126_cru,
glb_srst_snd);
dev_set_priv(sys_child, priv);
}
#if CONFIG_IS_ENABLED(RESET_ROCKCHIP)
ret = offsetof(struct rv1126_cru, softrst_con[0]);
ret = rockchip_reset_bind(dev, ret, 15);
if (ret)
debug("Warning: software reset driver bind failed\n");
#endif
return 0;
}
static const struct udevice_id rv1126_clk_ids[] = {
{ .compatible = "rockchip,rv1126-cru" },
{ }
};
U_BOOT_DRIVER(rockchip_rv1126_cru) = {
.name = "rockchip_rv1126_cru",
.id = UCLASS_CLK,
.of_match = rv1126_clk_ids,
.priv_auto = sizeof(struct rv1126_clk_priv),
.of_to_plat = rv1126_clk_of_to_plat,
.ops = &rv1126_clk_ops,
.bind = rv1126_clk_bind,
.probe = rv1126_clk_probe,
};