739 lines
16 KiB
C
739 lines
16 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2018 Rockchip Electronics Co., Ltd
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*/
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#include <common.h>
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#include <dm.h>
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#include <dm/of_access.h>
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#include <regmap.h>
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#include <syscon.h>
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#include <asm/arch/clock.h>
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#include <fdtdec.h>
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#include <linux/compat.h>
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#include <linux/err.h>
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#include <power/regulator.h>
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#define MAX_SUPPLIES 16
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/*
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* The max voltage for 1.8V and 3.3V come from the Rockchip datasheet under
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* "Recommended Operating Conditions" for "Digital GPIO". When the typical
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* is 3.3V the max is 3.6V. When the typical is 1.8V the max is 1.98V.
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*
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* They are used like this:
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* - If the voltage on a rail is above the "1.8" voltage (1.98V) we'll tell the
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* SoC we're at 3.3.
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* - If the voltage on a rail is above the "3.3" voltage (3.6V) we'll consider
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* that to be an error.
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*/
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#define MAX_VOLTAGE_1_8 1980000
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#define MAX_VOLTAGE_3_3 3600000
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#define PX30_IO_VSEL 0x180
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#define PX30_IO_VSEL_VCCIO6_SRC BIT(0)
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#define PX30_IO_VSEL_VCCIO6_SUPPLY_NUM 1
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#define RK3288_SOC_CON2 0x24c
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#define RK3288_SOC_CON2_FLASH0 BIT(7)
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#define RK3288_SOC_FLASH_SUPPLY_NUM 2
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#define RK3308_SOC_CON0 0x300
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#define RK3308_SOC_CON0_VCCIO3 BIT(8)
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#define RK3308_SOC_VCCIO3_SUPPLY_NUM 3
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#define RK3328_SOC_CON4 0x410
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#define RK3328_SOC_CON4_VCCIO2 BIT(7)
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#define RK3328_SOC_VCCIO2_SUPPLY_NUM 1
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#define RK3366_SOC_CON6 0x418
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#define RK3366_SOC_CON6_FLASH0 BIT(14)
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#define RK3366_SOC_FLASH_SUPPLY_NUM 2
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#define RK3368_SOC_CON15 0x43c
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#define RK3368_SOC_CON15_FLASH0 BIT(14)
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#define RK3368_SOC_FLASH_SUPPLY_NUM 2
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#define RK3399_PMUGRF_CON0 0x180
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#define RK3399_PMUGRF_CON0_VSEL BIT(8)
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#define RK3399_PMUGRF_VSEL_SUPPLY_NUM 9
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#define RK3568_PMU_GRF_IO_VSEL0 (0x0140)
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#define RK3568_PMU_GRF_IO_VSEL1 (0x0144)
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#define RK3568_PMU_GRF_IO_VSEL2 (0x0148)
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#define RV1126_PMU_GRF_IO_RETENTION (0x0144)
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struct rockchip_iodomain_priv;
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/**
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* @supplies: voltage settings matching the register bits.
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*/
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struct rockchip_iodomain_soc_data {
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int grf_offset;
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const char *supply_names[MAX_SUPPLIES];
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void (*init)(struct rockchip_iodomain_priv *iod);
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};
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struct rockchip_iodomain_supply {
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struct rockchip_iodomain_priv *iod;
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struct udevice *reg;
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int idx;
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};
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struct rockchip_iodomain_priv {
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struct regmap *regmap_base;
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struct rockchip_iodomain_soc_data *sdata;
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struct rockchip_iodomain_supply supplies[MAX_SUPPLIES];
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int (*write)(struct rockchip_iodomain_supply *supply, int uV);
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};
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static int rockchip_ofdata_to_platdata(struct udevice *dev)
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{
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struct rockchip_iodomain_priv *priv = dev_get_priv(dev);
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struct syscon_uc_info *syscon_priv;
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struct regmap *regmap;
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syscon_priv = dev_get_uclass_priv(dev_get_parent(dev));
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regmap = syscon_priv->regmap;
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if (IS_ERR(regmap))
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return PTR_ERR(regmap);
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priv->regmap_base = regmap;
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return 0;
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}
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static int rk3568_pmu_iodomain_write(struct rockchip_iodomain_supply *supply,
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int uV)
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{
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struct rockchip_iodomain_priv *priv = supply->iod;
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struct regmap *regmap = priv->regmap_base;
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u32 is_3v3 = uV > MAX_VOLTAGE_1_8;
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u32 val0, val1;
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int b;
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switch (supply->idx) {
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case 0: /* pmuio1 */
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case 1: /* pmuio2 */
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b = supply->idx;
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val0 = BIT(16 + b) | (is_3v3 ? 0 : BIT(b));
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b = supply->idx + 4;
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val1 = BIT(16 + b) | (is_3v3 ? BIT(b) : 0);
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regmap_write(regmap, RK3568_PMU_GRF_IO_VSEL2, val0);
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regmap_write(regmap, RK3568_PMU_GRF_IO_VSEL2, val1);
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break;
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case 2: /* vccio1 */
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case 3: /* vccio2 */
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case 4: /* vccio3 */
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case 5: /* vccio4 */
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case 6: /* vccio5 */
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case 7: /* vccio6 */
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case 8: /* vccio7 */
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b = supply->idx - 1;
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val0 = BIT(16 + b) | (is_3v3 ? 0 : BIT(b));
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val1 = BIT(16 + b) | (is_3v3 ? BIT(b) : 0);
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regmap_write(regmap, RK3568_PMU_GRF_IO_VSEL0, val0);
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regmap_write(regmap, RK3568_PMU_GRF_IO_VSEL1, val1);
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break;
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default:
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return -EINVAL;
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};
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return 0;
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}
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static int rv1126_iodomain_write(struct rockchip_iodomain_supply *supply,
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int uV)
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{
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struct rockchip_iodomain_priv *priv = supply->iod;
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struct regmap *regmap = priv->regmap_base;
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u32 val, vret_hold, vret_release;
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/* set value bit */
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val = (uV > MAX_VOLTAGE_1_8) ? 0 : 1;
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val <<= supply->idx;
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/* apply hiword-mask */
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val |= (BIT(supply->idx) << 16);
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vret_hold = (BIT(supply->idx) << 16);
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vret_release = (BIT(supply->idx) << 16) | BIT(supply->idx);
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printf("%s: %d uv, vsel: 0x%x\n",
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priv->sdata->supply_names[supply->idx], uV, val);
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regmap_write(regmap, RV1126_PMU_GRF_IO_RETENTION, vret_hold);
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regmap_write(regmap, priv->sdata->grf_offset, val);
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regmap_write(regmap, RV1126_PMU_GRF_IO_RETENTION, vret_release);
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return 0;
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}
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static int rockchip_iodomain_write(struct rockchip_iodomain_supply *supply,
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int uV)
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{
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struct rockchip_iodomain_priv *priv = supply->iod;
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struct regmap *regmap = priv->regmap_base;
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u32 val;
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int ret;
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/* set value bit */
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val = (uV > MAX_VOLTAGE_1_8) ? 0 : 1;
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val <<= supply->idx;
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/* apply hiword-mask */
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val |= (BIT(supply->idx) << 16);
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ret = regmap_write(regmap, priv->sdata->grf_offset, val);
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if (ret) {
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dev_err(priv->dev, "Couldn't write to GRF\n");
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return ret;
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}
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return 0;
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}
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static void px30_iodomain_init(struct rockchip_iodomain_priv *iod)
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{
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int ret;
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u32 val;
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/* if no VCCIO0 supply we should leave things alone */
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if (!iod->supplies[PX30_IO_VSEL_VCCIO6_SUPPLY_NUM].reg)
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return;
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/*
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* set vccio0 iodomain to also use this framework
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* instead of a special gpio.
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*/
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val = PX30_IO_VSEL_VCCIO6_SRC | (PX30_IO_VSEL_VCCIO6_SRC << 16);
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ret = regmap_write(iod->regmap_base, PX30_IO_VSEL, val);
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if (ret < 0)
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dev_warn(iod->dev, "couldn't update vccio0 ctrl\n");
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}
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static void rk3288_iodomain_init(struct rockchip_iodomain_priv *iod)
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{
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int ret;
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u32 val;
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/* if no flash supply we should leave things alone */
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if (!iod->supplies[RK3288_SOC_FLASH_SUPPLY_NUM].reg)
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return;
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/*
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* set flash0 iodomain to also use this framework
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* instead of a special gpio.
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*/
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val = RK3288_SOC_CON2_FLASH0 | (RK3288_SOC_CON2_FLASH0 << 16);
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ret = regmap_write(iod->regmap_base, RK3288_SOC_CON2, val);
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if (ret < 0)
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dev_warn(iod->dev, "couldn't update flash0 ctrl\n");
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}
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static void rk3308_iodomain_init(struct rockchip_iodomain_priv *iod)
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{
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int ret;
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u32 val;
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/* if no vccio3 supply we should leave things alone */
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if (!iod->supplies[RK3308_SOC_VCCIO3_SUPPLY_NUM].reg)
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return;
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/*
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* set vccio3 iodomain to also use this framework
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* instead of a special gpio.
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*/
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val = RK3308_SOC_CON0_VCCIO3 | (RK3308_SOC_CON0_VCCIO3 << 16);
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ret = regmap_write(iod->regmap_base, RK3308_SOC_CON0, val);
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if (ret < 0)
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dev_warn(iod->dev, "couldn't update vccio3 vsel ctrl\n");
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}
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static void rk3328_iodomain_init(struct rockchip_iodomain_priv *iod)
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{
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int ret;
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u32 val;
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/* if no vccio2 supply we should leave things alone */
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if (!iod->supplies[RK3328_SOC_VCCIO2_SUPPLY_NUM].reg)
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return;
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/*
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* set vccio2 iodomain to also use this framework
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* instead of a special gpio.
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*/
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val = RK3328_SOC_CON4_VCCIO2 | (RK3328_SOC_CON4_VCCIO2 << 16);
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ret = regmap_write(iod->regmap_base, RK3328_SOC_CON4, val);
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if (ret < 0)
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dev_warn(iod->dev, "couldn't update vccio2 vsel ctrl\n");
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}
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static void rk3366_iodomain_init(struct rockchip_iodomain_priv *iod)
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{
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int ret;
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u32 val;
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/* if no flash supply we should leave things alone */
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if (!iod->supplies[RK3366_SOC_FLASH_SUPPLY_NUM].reg)
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return;
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/*
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* set flash0 iodomain to also use this framework
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* instead of a special gpio.
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*/
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val = RK3366_SOC_CON6_FLASH0 | (RK3366_SOC_CON6_FLASH0 << 16);
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ret = regmap_write(iod->regmap_base, RK3368_SOC_CON15, val);
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if (ret < 0)
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dev_warn(iod->dev, "couldn't update flash0 ctrl\n");
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}
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static void rk3368_iodomain_init(struct rockchip_iodomain_priv *iod)
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{
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int ret;
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u32 val;
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/* if no flash supply we should leave things alone */
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if (!iod->supplies[RK3368_SOC_FLASH_SUPPLY_NUM].reg)
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return;
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/*
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* set flash0 iodomain to also use this framework
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* instead of a special gpio.
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*/
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val = RK3368_SOC_CON15_FLASH0 | (RK3368_SOC_CON15_FLASH0 << 16);
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ret = regmap_write(iod->regmap_base, RK3368_SOC_CON15, val);
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if (ret < 0)
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dev_warn(iod->dev, "couldn't update flash0 ctrl\n");
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}
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static void rk3399_pmu_iodomain_init(struct rockchip_iodomain_priv *iod)
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{
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int ret;
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u32 val;
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/* if no pmu io supply we should leave things alone */
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if (!iod->supplies[RK3399_PMUGRF_VSEL_SUPPLY_NUM].reg)
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return;
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/*
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* set pmu io iodomain to also use this framework
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* instead of a special gpio.
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*/
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val = RK3399_PMUGRF_CON0_VSEL | (RK3399_PMUGRF_CON0_VSEL << 16);
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ret = regmap_write(iod->regmap_base, RK3399_PMUGRF_CON0, val);
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if (ret < 0)
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dev_warn(iod->dev, "couldn't update pmu io iodomain ctrl\n");
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}
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static const struct rockchip_iodomain_soc_data soc_data_px30 = {
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.grf_offset = 0x180,
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.supply_names = {
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NULL,
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"vccio6",
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"vccio1",
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"vccio2",
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"vccio3",
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"vccio4",
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"vccio5",
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"vccio-oscgpi",
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},
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.init = px30_iodomain_init,
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};
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static const struct rockchip_iodomain_soc_data soc_data_px30_pmu = {
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.grf_offset = 0x100,
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.supply_names = {
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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"pmuio1",
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"pmuio2",
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},
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};
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/*
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* On the rk3188 the io-domains are handled by a shared register with the
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* lower 8 bits being still being continuing drive-strength settings.
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*/
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static const struct rockchip_iodomain_soc_data soc_data_rk3188 = {
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.grf_offset = 0x104,
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.supply_names = {
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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"ap0",
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"ap1",
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"cif",
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"flash",
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"vccio0",
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"vccio1",
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"lcdc0",
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"lcdc1",
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},
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};
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static const struct rockchip_iodomain_soc_data soc_data_rk322x = {
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.grf_offset = 0x418,
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.supply_names = {
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"vccio1",
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"vccio2",
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"vccio3",
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"vccio4",
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},
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};
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static const struct rockchip_iodomain_soc_data soc_data_rk3288 = {
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.grf_offset = 0x380,
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.supply_names = {
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"lcdc", /* LCDC_VDD */
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"dvp", /* DVPIO_VDD */
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"flash0", /* FLASH0_VDD (emmc) */
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"flash1", /* FLASH1_VDD (sdio1) */
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"wifi", /* APIO3_VDD (sdio0) */
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"bb", /* APIO5_VDD */
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"audio", /* APIO4_VDD */
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"sdcard", /* SDMMC0_VDD (sdmmc) */
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"gpio30", /* APIO1_VDD */
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"gpio1830", /* APIO2_VDD */
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},
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.init = rk3288_iodomain_init,
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};
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static const struct rockchip_iodomain_soc_data soc_data_rk3308 = {
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.grf_offset = 0x300,
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.supply_names = {
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"vccio0",
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"vccio1",
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"vccio2",
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"vccio3",
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"vccio4",
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"vccio5",
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},
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.init = rk3308_iodomain_init,
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};
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static const struct rockchip_iodomain_soc_data soc_data_rk3328 = {
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.grf_offset = 0x410,
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.supply_names = {
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"vccio1",
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"vccio2",
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"vccio3",
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"vccio4",
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"vccio5",
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"vccio6",
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"pmuio",
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},
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.init = rk3328_iodomain_init,
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};
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static const struct rockchip_iodomain_soc_data soc_data_rk3366 = {
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.grf_offset = 0x900,
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.supply_names = {
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"lcdc", /* LCDC_IOVDD */
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"dvpts", /* DVP_IOVDD */
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"flash", /* FLASH_IOVDD (emmc) */
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"wifibt", /* APIO1_IOVDD */
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NULL,
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"audio", /* AUDIO_IODVDD */
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"sdcard", /* SDMMC_IOVDD (sdmmc) */
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"tphdsor", /* APIO2_IOVDD */
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},
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.init = rk3366_iodomain_init,
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};
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static const struct rockchip_iodomain_soc_data soc_data_rk3368 = {
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.grf_offset = 0x900,
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.supply_names = {
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NULL, /* reserved */
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"dvp", /* DVPIO_VDD */
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"flash0", /* FLASH0_VDD (emmc) */
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"wifi", /* APIO2_VDD (sdio0) */
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NULL,
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"audio", /* APIO3_VDD */
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"sdcard", /* SDMMC0_VDD (sdmmc) */
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"gpio30", /* APIO1_VDD */
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"gpio1830", /* APIO4_VDD (gpujtag) */
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},
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.init = rk3368_iodomain_init,
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};
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static const struct rockchip_iodomain_soc_data soc_data_rk3368_pmu = {
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.grf_offset = 0x100,
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.supply_names = {
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NULL,
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NULL,
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NULL,
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NULL,
|
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"pmu", /*PMU IO domain*/
|
|
"vop", /*LCDC IO domain*/
|
|
},
|
|
};
|
|
|
|
static const struct rockchip_iodomain_soc_data soc_data_rk3399 = {
|
|
.grf_offset = 0xe640,
|
|
.supply_names = {
|
|
"bt656", /* APIO2_VDD */
|
|
"audio", /* APIO5_VDD */
|
|
"sdmmc", /* SDMMC0_VDD */
|
|
"gpio1830", /* APIO4_VDD */
|
|
},
|
|
};
|
|
|
|
static const struct rockchip_iodomain_soc_data soc_data_rk3399_pmu = {
|
|
.grf_offset = 0x180,
|
|
.supply_names = {
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
"pmu1830", /* PMUIO2_VDD */
|
|
},
|
|
.init = rk3399_pmu_iodomain_init,
|
|
};
|
|
|
|
static const struct rockchip_iodomain_soc_data soc_data_rk3568_pmu = {
|
|
.grf_offset = 0x140,
|
|
.supply_names = {
|
|
"pmuio1",
|
|
"pmuio2",
|
|
"vccio1",
|
|
"vccio2",
|
|
"vccio3",
|
|
"vccio4",
|
|
"vccio5",
|
|
"vccio6",
|
|
"vccio7",
|
|
},
|
|
};
|
|
|
|
static const struct rockchip_iodomain_soc_data soc_data_rv1108 = {
|
|
.grf_offset = 0x404,
|
|
.supply_names = {
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
"vccio1",
|
|
"vccio2",
|
|
"vccio3",
|
|
"vccio5",
|
|
"vccio6",
|
|
},
|
|
|
|
};
|
|
|
|
static const struct rockchip_iodomain_soc_data soc_data_rv1108_pmu = {
|
|
.grf_offset = 0x104,
|
|
.supply_names = {
|
|
"pmu",
|
|
},
|
|
};
|
|
|
|
static const struct rockchip_iodomain_soc_data soc_data_rv1126_pmu = {
|
|
.grf_offset = 0x140,
|
|
.supply_names = {
|
|
NULL,
|
|
"vccio1",
|
|
"vccio2",
|
|
"vccio3",
|
|
"vccio4",
|
|
"vccio5",
|
|
"vccio6",
|
|
"vccio7",
|
|
"pmuio0",
|
|
"pmuio1",
|
|
},
|
|
};
|
|
|
|
static struct udevice *of_get_regulator(ofnode node, const char *supply)
|
|
{
|
|
char sname[32]; /* 32 is max size of property name */
|
|
struct udevice *sudev = NULL;
|
|
ofnode snode;
|
|
u32 phandle;
|
|
int ret;
|
|
|
|
snprintf(sname, 32, "%s-supply", supply);
|
|
|
|
/* Get regulator and clk */
|
|
if (!ofnode_read_u32(node, sname, &phandle)) {
|
|
snode = ofnode_get_by_phandle(phandle);
|
|
ret = regulator_get_by_devname(snode.np->name, &sudev);
|
|
if (ret) {
|
|
printf("%s: Get (%s) regulator: %s failed, ret=%d\n",
|
|
__func__,
|
|
sname, snode.np->full_name, ret);
|
|
return NULL;
|
|
}
|
|
debug("IO-DOMAIN: supply: %s\n", snode.np->full_name);
|
|
}
|
|
|
|
return sudev;
|
|
}
|
|
|
|
static int rockchip_iodomain_probe(struct udevice *dev)
|
|
{
|
|
struct rockchip_iodomain_priv *priv = dev_get_priv(dev);
|
|
struct rockchip_iodomain_soc_data *sdata;
|
|
int i, ret;
|
|
|
|
sdata = (struct rockchip_iodomain_soc_data *)dev_get_driver_data(dev);
|
|
priv->sdata = sdata;
|
|
if (sdata == &soc_data_rk3568_pmu)
|
|
priv->write = rk3568_pmu_iodomain_write;
|
|
else if (sdata == &soc_data_rv1126_pmu)
|
|
priv->write = rv1126_iodomain_write;
|
|
else
|
|
priv->write = rockchip_iodomain_write;
|
|
|
|
if (!priv->regmap_base)
|
|
return -1;
|
|
|
|
for (i = 0; i < MAX_SUPPLIES; i++) {
|
|
const char *supply_name = priv->sdata->supply_names[i];
|
|
struct rockchip_iodomain_supply *supply = &priv->supplies[i];
|
|
struct udevice *reg;
|
|
u32 uV;
|
|
|
|
if (!supply_name)
|
|
continue;
|
|
|
|
reg = of_get_regulator(dev_ofnode(dev), supply_name);
|
|
if (!reg)
|
|
continue;
|
|
|
|
uV = regulator_get_value(reg);
|
|
if (uV <= 0) {
|
|
printf("voltage(%d uV) is invalid from %s\n", uV, reg->name);
|
|
continue;
|
|
}
|
|
|
|
if (uV > MAX_VOLTAGE_3_3) {
|
|
printf("%d uV is too high from %s\n", uV, reg->name);
|
|
continue;
|
|
}
|
|
|
|
/* setup our supply */
|
|
supply->idx = i;
|
|
supply->iod = priv;
|
|
supply->reg = reg;
|
|
|
|
ret = priv->write(supply, uV);
|
|
if (ret)
|
|
supply->reg = NULL;
|
|
}
|
|
|
|
if (priv->sdata->init)
|
|
priv->sdata->init(priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct udevice_id rockchip_iodomain_match[] = {
|
|
{
|
|
.compatible = "rockchip,px30-io-voltage-domain",
|
|
.data = (ulong)&soc_data_px30
|
|
},
|
|
{
|
|
.compatible = "rockchip,px30-pmu-io-voltage-domain",
|
|
.data = (ulong)&soc_data_px30_pmu
|
|
},
|
|
{
|
|
.compatible = "rockchip,rk3188-io-voltage-domain",
|
|
.data = (ulong)&soc_data_rk3188
|
|
},
|
|
{
|
|
.compatible = "rockchip,rk322x-io-voltage-domain",
|
|
.data = (ulong)&soc_data_rk322x
|
|
},
|
|
{
|
|
.compatible = "rockchip,rk3288-io-voltage-domain",
|
|
.data = (ulong)&soc_data_rk3288
|
|
},
|
|
{
|
|
.compatible = "rockchip,rk3308-io-voltage-domain",
|
|
.data = (ulong)&soc_data_rk3308
|
|
},
|
|
{
|
|
.compatible = "rockchip,rk3328-io-voltage-domain",
|
|
.data = (ulong)&soc_data_rk3328
|
|
},
|
|
{
|
|
.compatible = "rockchip,rk3366-io-voltage-domain",
|
|
.data = (ulong)&soc_data_rk3366
|
|
},
|
|
{
|
|
.compatible = "rockchip,rk3368-io-voltage-domain",
|
|
.data = (ulong)&soc_data_rk3368
|
|
},
|
|
{
|
|
.compatible = "rockchip,rk3368-pmu-io-voltage-domain",
|
|
.data = (ulong)&soc_data_rk3368_pmu
|
|
},
|
|
{
|
|
.compatible = "rockchip,rk3399-io-voltage-domain",
|
|
.data = (ulong)&soc_data_rk3399
|
|
},
|
|
{
|
|
.compatible = "rockchip,rk3399-pmu-io-voltage-domain",
|
|
.data = (ulong)&soc_data_rk3399_pmu
|
|
},
|
|
{
|
|
.compatible = "rockchip,rk3568-pmu-io-voltage-domain",
|
|
.data = (ulong)&soc_data_rk3568_pmu
|
|
},
|
|
{
|
|
.compatible = "rockchip,rv1108-io-voltage-domain",
|
|
.data = (ulong)&soc_data_rv1108
|
|
},
|
|
{
|
|
.compatible = "rockchip,rv1108-pmu-io-voltage-domain",
|
|
.data = (ulong)&soc_data_rv1108_pmu
|
|
},
|
|
{
|
|
.compatible = "rockchip,rv1126-pmu-io-voltage-domain",
|
|
.data = (ulong)&soc_data_rv1126_pmu
|
|
},
|
|
{ /* sentinel */ },
|
|
};
|
|
|
|
U_BOOT_DRIVER(io_domain) = {
|
|
.name = "io_domain",
|
|
.id = UCLASS_IO_DOMAIN,
|
|
.of_match = rockchip_iodomain_match,
|
|
.priv_auto_alloc_size = sizeof(struct rockchip_iodomain_priv),
|
|
.ofdata_to_platdata = rockchip_ofdata_to_platdata,
|
|
.probe = rockchip_iodomain_probe,
|
|
};
|