From: Joy Zou joy.zou@nxp.com
Add regulator support for NXP PMIC pf9453 for imx91 qsb.
Reviewed-by: Ye Li ye.li@nxp.com Reviewed-by: Peng Fan peng.fan@nxp.com Signed-off-by: Joy Zou joy.zou@nxp.com Signed-off-by: Peng Fan peng.fan@nxp.com --- drivers/power/regulator/Kconfig | 15 ++ drivers/power/regulator/Makefile | 1 + drivers/power/regulator/pf9453.c | 256 +++++++++++++++++++++++++++++++ 3 files changed, 272 insertions(+) create mode 100644 drivers/power/regulator/pf9453.c
diff --git a/drivers/power/regulator/Kconfig b/drivers/power/regulator/Kconfig index 69dfb07df50..4aa963e745c 100644 --- a/drivers/power/regulator/Kconfig +++ b/drivers/power/regulator/Kconfig @@ -96,6 +96,21 @@ config SPL_DM_REGULATOR_PCA9450 This config enables implementation of driver-model regulator uclass features for regulators on ROHM PCA9450 in SPL.
+config DM_REGULATOR_PF9453 + bool "Enable Driver Model for NXP PF9453 regulators" + depends on DM_REGULATOR && DM_PMIC_PF9453 + help + This config enables implementation of driver-model regulator uclass + features for regulators on NXP PF9453 PMICs. PF9453 contains 6 bucks + and 5 LDOS. The driver implements get/set api for value and enable. + +config SPL_DM_REGULATOR_PF9453 + bool "Enable Driver Model for NXP PF9453 regulators in SPL" + depends on DM_REGULATOR_PF9453 && SPL + help + This config enables implementation of driver-model regulator uclass + features for regulators on ROHM PF9453 in SPL. + config DM_REGULATOR_PF0900 bool "Enable Driver Model for NXP PF0900 regulators" depends on DM_REGULATOR && DM_PMIC_PF0900 diff --git a/drivers/power/regulator/Makefile b/drivers/power/regulator/Makefile index 7a580d45b72..9e9a4da6217 100644 --- a/drivers/power/regulator/Makefile +++ b/drivers/power/regulator/Makefile @@ -16,6 +16,7 @@ obj-$(CONFIG_DM_REGULATOR_NPCM8XX) += npcm8xx_regulator.o obj-$(CONFIG_$(SPL_)DM_PMIC_PFUZE100) += pfuze100.o obj-$(CONFIG_$(SPL_)DM_REGULATOR_BD71837) += bd71837.o obj-$(CONFIG_$(SPL_)DM_REGULATOR_PCA9450) += pca9450.o +obj-$(CONFIG_$(SPL_)DM_REGULATOR_PF9453) += pf9453.o obj-$(CONFIG_$(SPL_)DM_REGULATOR_PF0900) += pf0900.o obj-$(CONFIG_$(SPL_)DM_REGULATOR_PF5300) += pf5300.o obj-$(CONFIG_$(SPL_)REGULATOR_PWM) += pwm_regulator.o diff --git a/drivers/power/regulator/pf9453.c b/drivers/power/regulator/pf9453.c new file mode 100644 index 00000000000..d11c69c33e6 --- /dev/null +++ b/drivers/power/regulator/pf9453.c @@ -0,0 +1,256 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * NXP PF9453 regulator driver + * Copyright 2024 NXP + */ + +#include <dm.h> +#include <errno.h> +#include <log.h> +#include <linux/bitops.h> +#include <power/pf9453.h> +#include <power/pmic.h> +#include <power/regulator.h> + +/** + * struct pf9453_vrange - describe linear range of voltages + * + * @min_volt: smallest voltage in range + * @step: how much voltage changes at each selector step + * @min_sel: smallest selector in the range + * @max_sel: maximum selector in the range + */ +struct pf9453_vrange { + unsigned int min_volt; + unsigned int step; + u8 min_sel; + u8 max_sel; +}; + +/** + * struct pf9453_plat - describe regulator control registers + * + * @name: name of the regulator. Used for matching the dt-entry + * @enable_reg: register address used to enable/disable regulator + * @enablemask: register mask used to enable/disable regulator + * @volt_reg: register address used to configure regulator voltage + * @volt_mask: register mask used to configure regulator voltage + * @ranges: pointer to ranges of regulator voltages and matching register + * values + * @numranges: number of voltage ranges pointed by ranges + */ +struct pf9453_plat { + const char *name; + u8 enable_reg; + u8 enablemask; + u8 volt_reg; + u8 volt_mask; + struct pf9453_vrange *ranges; + unsigned int numranges; +}; + +#define PCA_RANGE(_min, _vstep, _sel_low, _sel_hi) \ +{ \ + .min_volt = (_min), .step = (_vstep), \ + .min_sel = (_sel_low), .max_sel = (_sel_hi), \ +} + +#define PCA_DATA(_name, enreg, enmask, vreg, vmask, _range) \ +{ \ + .name = (_name), .enable_reg = (enreg), .enablemask = (enmask), \ + .volt_reg = (vreg), .volt_mask = (vmask), .ranges = (_range), \ + .numranges = ARRAY_SIZE(_range) \ +} + +static struct pf9453_vrange pf9453_buck134_vranges[] = { + PCA_RANGE(600000, 25000, 0, 0x7f), +}; + +static struct pf9453_vrange pf9453_buck2_vranges[] = { + PCA_RANGE(600000, 12500, 0, 0x7f), +}; + +static struct pf9453_vrange pf9453_ldo1_vranges[] = { + PCA_RANGE(800000, 25000, 0x0, 0x64), +}; + +static struct pf9453_vrange pf9453_ldo2_vranges[] = { + PCA_RANGE(500000, 25000, 0x0, 0x3a), +}; + +static struct pf9453_vrange pf9453_ldosnvs_vranges[] = { + PCA_RANGE(800000, 25000, 0x0, 0x58), +}; + +static struct pf9453_plat pf9453_reg_data[] = { + PCA_DATA("BUCK1", PF9453_BUCK1CTRL, PF9453_EN_MODE_MASK, + PF9453_BUCK1OUT, PF9453_BUCK_RUN_MASK, + pf9453_buck134_vranges), + PCA_DATA("BUCK2", PF9453_BUCK2CTRL, PF9453_EN_MODE_MASK, + PF9453_BUCK2OUT, PF9453_BUCK_RUN_MASK, + pf9453_buck2_vranges), + PCA_DATA("BUCK3", PF9453_BUCK3CTRL, PF9453_EN_MODE_MASK, + PF9453_BUCK3OUT, PF9453_BUCK_RUN_MASK, + pf9453_buck134_vranges), + PCA_DATA("BUCK4", PF9453_BUCK4CTRL, PF9453_EN_MODE_MASK, + PF9453_BUCK4OUT, PF9453_BUCK_RUN_MASK, + pf9453_buck134_vranges), + /* LDOs */ + PCA_DATA("LDO1", PF9453_LDO1CFG, PF9453_EN_MODE_MASK, + PF9453_LDO1OUT_H, PF9453_LDO1_MASK, + pf9453_ldo1_vranges), + PCA_DATA("LDO2", PF9453_LDO2CFG, PF9453_EN_MODE_MASK, + PF9453_LDO2OUT, PF9453_LDO2_MASK, + pf9453_ldo2_vranges), + PCA_DATA("LDOS_NVS", PF9453_LDOSNVS_CFG2, PF9453_EN_MODE_MASK, + PF9453_LDOSNVS_CFG1, PF9453_LDOSNVS_MASK, + pf9453_ldosnvs_vranges), +}; + +static int vrange_find_value(struct pf9453_vrange *r, unsigned int sel, + unsigned int *val) +{ + if (!val || sel < r->min_sel || sel > r->max_sel) + return -EINVAL; + + *val = r->min_volt + r->step * (sel - r->min_sel); + return 0; +} + +static int vrange_find_selector(struct pf9453_vrange *r, int val, + unsigned int *sel) +{ + int ret = -EINVAL; + int num_vals = r->max_sel - r->min_sel + 1; + + if (val >= r->min_volt && + val <= r->min_volt + r->step * (num_vals - 1)) { + if (r->step) { + *sel = r->min_sel + ((val - r->min_volt) / r->step); + ret = 0; + } else { + *sel = r->min_sel; + ret = 0; + } + } + return ret; +} + +static int pf9453_get_enable(struct udevice *dev) +{ + struct pf9453_plat *plat = dev_get_plat(dev); + int val; + + val = pmic_reg_read(dev->parent, plat->enable_reg); + if (val < 0) + return val; + + return (val & plat->enablemask); +} + +static int pf9453_set_enable(struct udevice *dev, bool enable) +{ + int val = 0; + struct pf9453_plat *plat = dev_get_plat(dev); + + if (enable) + val = plat->enablemask; + + return pmic_clrsetbits(dev->parent, plat->enable_reg, plat->enablemask, + val); +} + +static int pf9453_get_value(struct udevice *dev) +{ + struct pf9453_plat *plat = dev_get_plat(dev); + unsigned int reg, tmp; + int i, ret; + + ret = pmic_reg_read(dev->parent, plat->volt_reg); + if (ret < 0) + return ret; + + reg = ret; + reg &= plat->volt_mask; + + for (i = 0; i < plat->numranges; i++) { + struct pf9453_vrange *r = &plat->ranges[i]; + + if (!vrange_find_value(r, reg, &tmp)) + return tmp; + } + + pr_err("Unknown voltage value read from pmic\n"); + + return -EINVAL; +} + +static int pf9453_set_value(struct udevice *dev, int uvolt) +{ + struct pf9453_plat *plat = dev_get_plat(dev); + unsigned int sel; + int i, found = 0; + + for (i = 0; i < plat->numranges; i++) { + struct pf9453_vrange *r = &plat->ranges[i]; + + found = !vrange_find_selector(r, uvolt, &sel); + if (found) { + unsigned int tmp; + + /* + * We require exactly the requested value to be + * supported - this can be changed later if needed + */ + found = !vrange_find_value(r, sel, &tmp); + if (found && tmp == uvolt) + break; + found = 0; + } + } + + if (!found) + return -EINVAL; + + return pmic_clrsetbits(dev->parent, plat->volt_reg, + plat->volt_mask, sel); +} + +static int pf9453_regulator_probe(struct udevice *dev) +{ + struct pf9453_plat *plat = dev_get_plat(dev); + int i, type; + + type = dev_get_driver_data(dev_get_parent(dev)); + + if (type != NXP_CHIP_TYPE_PF9453) { + debug("Unknown PMIC type\n"); + return -EINVAL; + } + + for (i = 0; i < ARRAY_SIZE(pf9453_reg_data); i++) { + if (strcmp(dev->name, pf9453_reg_data[i].name)) + continue; + *plat = pf9453_reg_data[i]; + return 0; + } + + pr_err("Unknown regulator '%s'\n", dev->name); + + return -ENOENT; +} + +static const struct dm_regulator_ops pf9453_regulator_ops = { + .get_value = pf9453_get_value, + .set_value = pf9453_set_value, + .get_enable = pf9453_get_enable, + .set_enable = pf9453_set_enable, +}; + +U_BOOT_DRIVER(pf9453_regulator) = { + .name = PF9453_REGULATOR_DRIVER, + .id = UCLASS_REGULATOR, + .ops = &pf9453_regulator_ops, + .probe = pf9453_regulator_probe, + .plat_auto = sizeof(struct pf9453_plat), +};