Added support for PMIC TPS65224 regulators. Includes driver for buck and ldo.
Signed-off-by: Bhargav Raviprakash bhargav.r@ltts.com --- drivers/power/regulator/Kconfig | 10 + drivers/power/regulator/Makefile | 1 + drivers/power/regulator/tps65224_regulator.c | 495 +++++++++++++++++++ include/power/tps65224.h | 6 +- 4 files changed, 510 insertions(+), 2 deletions(-) create mode 100644 drivers/power/regulator/tps65224_regulator.c
diff --git a/drivers/power/regulator/Kconfig b/drivers/power/regulator/Kconfig index eb5aa38c1c..cb86025a22 100644 --- a/drivers/power/regulator/Kconfig +++ b/drivers/power/regulator/Kconfig @@ -408,6 +408,16 @@ config DM_REGULATOR_TPS65941 be configured in multi phase modes & 4 LDOs. The driver implements get/set api for value and enable.
+config DM_REGULATOR_TPS65224 + bool "Enable driver for TPS65224 PMIC regulators" + depends on PMIC_TPS65224 + help + This enables implementation of driver-model regulator uclass + features for REGULATOR TPS65224 and the family of TPS65224 PMICs. + TPS65224 series of PMICs have 4 single phase BUCKs that can also + be configured in multi phase modes & 3 LDOs. The driver implements + get/set api for value and enable. + config DM_REGULATOR_SCMI bool "Enable driver for SCMI voltage domain regulators" depends on DM_REGULATOR diff --git a/drivers/power/regulator/Makefile b/drivers/power/regulator/Makefile index d9e0cd5949..d4b9b7233f 100644 --- a/drivers/power/regulator/Makefile +++ b/drivers/power/regulator/Makefile @@ -34,6 +34,7 @@ obj-$(CONFIG_DM_REGULATOR_TPS65910) += tps65910_regulator.o obj-$(CONFIG_DM_REGULATOR_TPS62360) += tps62360_regulator.o obj-$(CONFIG_$(SPL_)DM_REGULATOR_STPMIC1) += stpmic1.o obj-$(CONFIG_DM_REGULATOR_TPS65941) += tps65941_regulator.o +obj-$(CONFIG_DM_REGULATOR_TPS65224) += tps65224_regulator.o obj-$(CONFIG_DM_REGULATOR_SCMI) += scmi_regulator.o obj-$(CONFIG_$(SPL_)DM_REGULATOR_ANATOP) += anatop_regulator.o obj-$(CONFIG_DM_REGULATOR_TPS65219) += tps65219_regulator.o diff --git a/drivers/power/regulator/tps65224_regulator.c b/drivers/power/regulator/tps65224_regulator.c new file mode 100644 index 0000000000..0431556331 --- /dev/null +++ b/drivers/power/regulator/tps65224_regulator.c @@ -0,0 +1,495 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2023 Texas Instruments Incorporated, <www.ti.com> + * + */ +#include <fdtdec.h> +#include <errno.h> +#include <dm.h> +#include <log.h> +#include <linux/delay.h> +#include <power/pmic.h> +#include <power/regulator.h> +#include <power/tps65224.h> + +#define TPS65224_BUCK234_50mV_OFFSET_START_VOLT 1200000 +#define TPS65224_BUCK234_25mV_OFFSET_START_VOLT 500000 +#define TPS65224_BUCK234_50mV_OFFSET_START_VSET 0x1B +#define TPS65224_BUCK234_25mV_OFFSET_START_VSET 0x00 + +#define TPS65224_BUCK1_20mV_OFFSET_START_VOLT_1 1660000 +#define TPS65224_BUCK1_10mV_OFFSET_START_VOLT 1100000 +#define TPS65224_BUCK1_5mV_OFFSET_START_VOLT 600000 +#define TPS65224_BUCK1_20mV_OFFSET_START_VOLT_0 500000 +#define TPS65224_BUCK1_20mV_OFFSET_START_VSET_1 0xAB +#define TPS65224_BUCK1_10mV_OFFSET_START_VSET 0x73 +#define TPS65224_BUCK1_5mV_OFFSET_START_VSET 0x0F +#define TPS65224_BUCK1_20mV_OFFSET_START_VSET_0 0x0A + +static const char tps65224_buck_ctrl[TPS65224_BUCK_NUM] = {0x4, 0x6, 0x8, 0xA}; +static const char tps65224_buck_vout[TPS65224_BUCK_NUM] = {0xE, 0x10, 0x12, 0x14}; +static const char tps65224_ldo_ctrl[TPS65224_BUCK_NUM] = {0x1D, 0x1E, 0x1F}; +static const char tps65224_ldo_vout[TPS65224_BUCK_NUM] = {0x23, 0x24, 0x25}; + +static int tps65224_buck_enable(struct udevice *dev, int op, bool *enable) +{ + int ret; + unsigned int adr; + struct dm_regulator_uclass_plat *uc_pdata; + + uc_pdata = dev_get_uclass_plat(dev); + adr = uc_pdata->ctrl_reg; + + ret = pmic_reg_read(dev->parent, adr); + if (ret < 0) + return ret; + + if (op == PMIC_OP_GET) { + ret &= TPS65224_BUCK_MODE_MASK; + + if (ret) + *enable = true; + else + *enable = false; + + return 0; + } else if (op == PMIC_OP_SET) { + if (*enable) + ret |= TPS65224_BUCK_MODE_MASK; + else + ret &= ~TPS65224_BUCK_MODE_MASK; + ret = pmic_reg_write(dev->parent, adr, ret); + if (ret) + return ret; + } + + return 0; +} + +static int tps65224_buck_volt2val(int idx, int uV) +{ + if (uV > TPS65224_BUCK_VOLT_MAX) + return -EINVAL; + + if (idx > 0) { + if (uV >= TPS65224_BUCK234_50mV_OFFSET_START_VOLT) + return (uV - TPS65224_BUCK234_50mV_OFFSET_START_VOLT) / 50000 + + TPS65224_BUCK234_50mV_OFFSET_START_VSET; + else if (uV >= TPS65224_BUCK234_25mV_OFFSET_START_VOLT) + return (uV - TPS65224_BUCK234_25mV_OFFSET_START_VOLT) / 25000; + else + return -EINVAL; + } + + if (uV >= TPS65224_BUCK1_20mV_OFFSET_START_VOLT_1) + return (uV - TPS65224_BUCK1_20mV_OFFSET_START_VOLT_1) / 20000 + + TPS65224_BUCK1_20mV_OFFSET_START_VSET_1; + else if (uV >= TPS65224_BUCK1_10mV_OFFSET_START_VOLT) + return (uV - TPS65224_BUCK1_10mV_OFFSET_START_VOLT) / 10000 + + TPS65224_BUCK1_10mV_OFFSET_START_VSET; + else if (uV >= TPS65224_BUCK1_5mV_OFFSET_START_VOLT) + return (uV - TPS65224_BUCK1_5mV_OFFSET_START_VOLT) / 5000 + + TPS65224_BUCK1_5mV_OFFSET_START_VSET; + else if (uV >= TPS65224_BUCK1_20mV_OFFSET_START_VOLT_0) + return (uV - TPS65224_BUCK1_20mV_OFFSET_START_VOLT_0) / 20000 + + TPS65224_BUCK1_20mV_OFFSET_START_VSET_0; + else + return -EINVAL; +} + +static int tps65224_buck_val2volt(int idx, int val) +{ + if (idx > 0) { + if (val > TPS65224_BUCK234_VOLT_MAX_HEX) + return -EINVAL; + else if (val >= TPS65224_BUCK234_50mV_OFFSET_START_VSET) + return TPS65224_BUCK234_50mV_OFFSET_START_VOLT + + (val - TPS65224_BUCK234_50mV_OFFSET_START_VSET) * 50000; + else if (val >= TPS65224_BUCK234_25mV_OFFSET_START_VSET) + return TPS65224_BUCK234_25mV_OFFSET_START_VOLT + + (val - TPS65224_BUCK234_25mV_OFFSET_START_VSET) * 25000; + else + return -EINVAL; + } + + if (val > TPS65224_BUCK1_VOLT_MAX_HEX) + return -EINVAL; + else if (val >= TPS65224_BUCK1_20mV_OFFSET_START_VSET_1) + return TPS65224_BUCK1_20mV_OFFSET_START_VOLT_1 + + (val - TPS65224_BUCK1_20mV_OFFSET_START_VSET_1) * 20000; + else if (val >= TPS65224_BUCK1_10mV_OFFSET_START_VSET) + return TPS65224_BUCK1_10mV_OFFSET_START_VOLT + + (val - TPS65224_BUCK1_10mV_OFFSET_START_VSET) * 10000; + else if (val >= TPS65224_BUCK1_5mV_OFFSET_START_VSET) + return TPS65224_BUCK1_5mV_OFFSET_START_VOLT + + (val - TPS65224_BUCK1_5mV_OFFSET_START_VSET) * 5000; + else if (val >= TPS65224_BUCK1_20mV_OFFSET_START_VSET_0) + return TPS65224_BUCK1_20mV_OFFSET_START_VOLT_0 + + (val - TPS65224_BUCK1_20mV_OFFSET_START_VSET_0) * 20000; + else + return -EINVAL; +} + +int tps65224_lookup_slew(int id) +{ + switch (id) { + case 0: + return 10000; + case 1: + return 5000; + case 2: + return 2500; + case 3: + return 1250; + default: + return -1; + } +} + +static int tps65224_buck_val(struct udevice *dev, int op, int *uV) +{ + unsigned int hex, adr; + int ret, idx, delta, uwait, slew; + struct dm_regulator_uclass_plat *uc_pdata; + + idx = dev->driver_data; + idx = (idx == 12) ? 0 : (idx - 1); + + uc_pdata = dev_get_uclass_plat(dev); + + if (op == PMIC_OP_GET) + *uV = 0; + + adr = uc_pdata->volt_reg; + + ret = pmic_reg_read(dev->parent, adr); + if (ret < 0) + return ret; + + ret &= TPS65224_BUCK_VOLT_MASK; + ret = tps65224_buck_val2volt(idx, ret); + if (ret < 0) + return ret; + + if (op == PMIC_OP_GET) { + *uV = ret; + return 0; + } + + /* + * Compute the delta voltage, find the slew rate and wait + * for the appropriate amount of time after voltage switch + */ + if (*uV > ret) + delta = *uV - ret; + else + delta = ret - *uV; + + slew = pmic_reg_read(dev->parent, uc_pdata->ctrl_reg + 1); + if (slew < 0) + return ret; + + slew &= TP65224_BUCK_CONF_SLEW_MASK; + slew = tps65224_lookup_slew(slew); + if (slew <= 0) + return ret; + + uwait = delta / slew; + + hex = tps65224_buck_volt2val(idx, *uV); + if (hex < 0) + return hex; + + ret &= 0x0; + ret = hex; + + ret = pmic_reg_write(dev->parent, adr, ret); + + udelay(uwait); + + return ret; +} + +static int tps65224_ldo_enable(struct udevice *dev, int op, bool *enable) +{ + int ret; + unsigned int adr; + struct dm_regulator_uclass_plat *uc_pdata; + + uc_pdata = dev_get_uclass_plat(dev); + adr = uc_pdata->ctrl_reg; + + ret = pmic_reg_read(dev->parent, adr); + if (ret < 0) + return ret; + + if (op == PMIC_OP_GET) { + ret &= TPS65224_LDO_MODE_MASK; + + if (ret) + *enable = true; + else + *enable = false; + + return 0; + } else if (op == PMIC_OP_SET) { + if (*enable) + ret |= TPS65224_LDO_MODE_MASK; + else + ret &= ~TPS65224_LDO_MODE_MASK; + ret = pmic_reg_write(dev->parent, adr, ret); + if (ret) + return ret; + } + + return 0; +} + +static int tps65224_ldo_volt2val(int idx, int uV) +{ + int base = TPS65224_LDO1_VOLT_MIN; + int max = TPS65224_LDO1_VOLT_MAX; + int offset = TPS65224_LDO1_VSET_MIN; + int step = TPS65224_LDO123_STEP; + + if (idx > 0) { + base = TPS65224_LDO23_VOLT_MIN; + max = TPS65224_LDO23_VOLT_MAX; + offset = TPS65224_LDO23_VSET_MIN; + step = TPS65224_LDO123_STEP; + } + + if (uV > max) + return -EINVAL; + else if (uV >= base) + return (uV - base) / step + offset; + else + return -EINVAL; +} + +static int tps65224_ldo_val2volt(int idx, int val) +{ + int reg_base = TPS65224_LDO1_VSET_MIN; + int reg_max = TPS65224_LDO1_VSET_MAX; + int base = TPS65224_LDO1_VOLT_MIN; + int max = TPS65224_LDO1_VOLT_MAX; + int step = TPS65224_LDO123_STEP; + int mask = TPS65224_LDO_VOLT_MASK >> 1; + + if (idx > 0) { + base = TPS65224_LDO23_VOLT_MIN; + max = TPS65224_LDO23_VOLT_MAX; + reg_base = TPS65224_LDO123_VSET_MIN; + reg_max = TPS65224_LDO23_VSET_MAX; + step = TPS65224_LDO123_STEP; + } + + val = val >> 1; + if (val > mask || val < 0) + return -EINVAL; + else if (val >= reg_max) + return max; + else if (val <= reg_base) + return base; + else if (val >= 0) + return base + (step * (val - reg_base)); + else + return -EINVAL; +} + +static int tps65224_ldo_val(struct udevice *dev, int op, int *uV) +{ + unsigned int hex, adr; + int ret, ret_volt; + struct dm_regulator_uclass_plat *uc_pdata; + int idx; + + idx = dev->driver_data - 1; + uc_pdata = dev_get_uclass_plat(dev); + + if (op == PMIC_OP_GET) + *uV = 0; + + adr = uc_pdata->volt_reg; + + ret = pmic_reg_read(dev->parent, adr); + if (ret < 0) + return ret; + + ret &= TPS65224_LDO_VOLT_MASK; + + ret_volt = tps65224_ldo_val2volt(idx, ret); + + if (ret_volt < 0) + return ret_volt; + + if (op == PMIC_OP_GET) { + *uV = ret_volt; + return 0; + } + + /* LDO1 in BYPASS mode only supports 2.2V min to 3.6V max */ + if (idx == 0 && (ret & BIT(TPS65224_LDO123_BYP_CONFIG)) && + *uV < TPS65224_LDO1_VOLT_BYP_MIN) + return -EINVAL; + + /* LDO2 & LDO3 in BYPASS mode supports 1.5V min to 5.5V max */ + if (idx > 0 && (ret & BIT(TPS65224_LDO123_BYP_CONFIG)) && + *uV < TPS65224_LDO23_VOLT_BYP_MIN) + return -EINVAL; + + hex = tps65224_ldo_volt2val(idx, *uV); + if (hex < 0) + return hex; + + hex = hex << TPS65224_LDO_MODE_MASK; + + ret &= ~TPS65224_LDO_VOLT_MASK; + ret |= hex; + + ret = pmic_reg_write(dev->parent, adr, ret); + + return ret; +} + +static int tps65224_ldo_probe(struct udevice *dev) +{ + struct dm_regulator_uclass_plat *uc_pdata; + int idx; + + uc_pdata = dev_get_uclass_plat(dev); + uc_pdata->type = REGULATOR_TYPE_LDO; + + idx = dev->driver_data; + if (idx == 1 || idx == 2 || idx == 3) { + debug("Single phase regulator\n"); + } else { + printf("Wrong ID for regulator\n"); + return -EINVAL; + } + + uc_pdata->ctrl_reg = tps65224_ldo_ctrl[idx - 1]; + uc_pdata->volt_reg = tps65224_ldo_vout[idx - 1]; + + return 0; +} + +static int tps65224_buck_probe(struct udevice *dev) +{ + struct dm_regulator_uclass_plat *uc_pdata; + int idx; + + uc_pdata = dev_get_uclass_plat(dev); + uc_pdata->type = REGULATOR_TYPE_BUCK; + + idx = dev->driver_data; + if (idx == 1 || idx == 2 || idx == 3 || idx == 4) { + debug("Single phase regulator\n"); + } else if (idx == 12) { + idx = 1; + } else { + printf("Wrong ID for regulator\n"); + return -EINVAL; + } + + uc_pdata->ctrl_reg = tps65224_buck_ctrl[idx - 1]; + uc_pdata->volt_reg = tps65224_buck_vout[idx - 1]; + + return 0; +} + +static int ldo_get_value(struct udevice *dev) +{ + int uV; + int ret; + + ret = tps65224_ldo_val(dev, PMIC_OP_GET, &uV); + if (ret) + return ret; + + return uV; +} + +static int ldo_set_value(struct udevice *dev, int uV) +{ + return tps65224_ldo_val(dev, PMIC_OP_SET, &uV); +} + +static int ldo_get_enable(struct udevice *dev) +{ + bool enable = false; + int ret; + + ret = tps65224_ldo_enable(dev, PMIC_OP_GET, &enable); + if (ret) + return ret; + + return enable; +} + +static int ldo_set_enable(struct udevice *dev, bool enable) +{ + return tps65224_ldo_enable(dev, PMIC_OP_SET, &enable); +} + +static int buck_get_value(struct udevice *dev) +{ + int uV; + int ret; + + ret = tps65224_buck_val(dev, PMIC_OP_GET, &uV); + if (ret) + return ret; + + return uV; +} + +static int buck_set_value(struct udevice *dev, int uV) +{ + return tps65224_buck_val(dev, PMIC_OP_SET, &uV); +} + +static int buck_get_enable(struct udevice *dev) +{ + bool enable = false; + int ret; + + ret = tps65224_buck_enable(dev, PMIC_OP_GET, &enable); + if (ret) + return ret; + + return enable; +} + +static int buck_set_enable(struct udevice *dev, bool enable) +{ + return tps65224_buck_enable(dev, PMIC_OP_SET, &enable); +} + +static const struct dm_regulator_ops tps65224_ldo_ops = { + .get_value = ldo_get_value, + .set_value = ldo_set_value, + .get_enable = ldo_get_enable, + .set_enable = ldo_set_enable, +}; + +U_BOOT_DRIVER(tps65224_ldo) = { + .name = TPS65224_LDO_DRIVER, + .id = UCLASS_REGULATOR, + .ops = &tps65224_ldo_ops, + .probe = tps65224_ldo_probe, +}; + +static const struct dm_regulator_ops tps65224_buck_ops = { + .get_value = buck_get_value, + .set_value = buck_set_value, + .get_enable = buck_get_enable, + .set_enable = buck_set_enable, +}; + +U_BOOT_DRIVER(tps65224_buck) = { + .name = TPS65224_BUCK_DRIVER, + .id = UCLASS_REGULATOR, + .ops = &tps65224_buck_ops, + .probe = tps65224_buck_probe, +}; diff --git a/include/power/tps65224.h b/include/power/tps65224.h index 24e91b6a67..c89317f03a 100644 --- a/include/power/tps65224.h +++ b/include/power/tps65224.h @@ -36,8 +36,10 @@ /* BYPASS is bit7 of VOUT TPS65224_LDO_BYP_MASK */ #define TPS65224_LDO123_BYP_CONFIG 7
-#define TPS65224_LDO123_VOLT_BYP_MIN 2200000 -#define TPS65224_LDO123_VOLT_BYP_MAX 3600000 +#define TPS65224_LDO1_VOLT_BYP_MIN 2200000 +#define TPS65224_LDO1_VOLT_BYP_MAX 3600000 +#define TPS65224_LDO23_VOLT_BYP_MIN 1500000 +#define TPS65224_LDO23_VOLT_BYP_MAX 5500000 #define TPS65224_LDO1_VOLT_MIN 1200000 #define TPS65224_LDO23_VOLT_MIN 600000 #define TPS65224_LDO4_VOLT_MIN 1200000