Added support for PMIC TPS65224. Includes driver for pmic, and disabling Watchdog.
Signed-off-by: Bhargav Raviprakash bhargav.r@ltts.com --- drivers/power/pmic/Kconfig | 6 ++ drivers/power/pmic/Makefile | 1 + drivers/power/pmic/tps65224.c | 141 ++++++++++++++++++++++++++++++++++ include/power/tps65224.h | 57 ++++++++++++++ 4 files changed, 205 insertions(+) create mode 100644 drivers/power/pmic/tps65224.c create mode 100644 include/power/tps65224.h
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig index 4a6f0ce093..b06bd31823 100644 --- a/drivers/power/pmic/Kconfig +++ b/drivers/power/pmic/Kconfig @@ -378,6 +378,12 @@ config PMIC_TPS65941 The TPS65941 is a PMIC containing a bunch of SMPS & LDOs. This driver binds the pmic children.
+config PMIC_TPS65224 + bool "Enable driver for Texas Instruments TPS65224 PMIC" + help + The TPS65224 is a PMIC containing a bunch of SMPS & LDOs. + This driver binds the pmic children. + config PMIC_TPS65219 bool "Enable driver for Texas Instruments TPS65219 PMIC" depends on DM_PMIC diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile index 0b3b3d62d0..cec16e57d3 100644 --- a/drivers/power/pmic/Makefile +++ b/drivers/power/pmic/Makefile @@ -33,6 +33,7 @@ obj-$(CONFIG_PMIC_STPMIC1) += stpmic1.o obj-$(CONFIG_PMIC_TPS65217) += pmic_tps65217.o obj-$(CONFIG_PMIC_TPS65219) += tps65219.o obj-$(CONFIG_PMIC_TPS65941) += tps65941.o +obj-$(CONFIG_PMIC_TPS65224) += tps65224.o obj-$(CONFIG_POWER_TPS65218) += pmic_tps65218.o
ifeq ($(CONFIG_$(SPL_)POWER_LEGACY),y) diff --git a/drivers/power/pmic/tps65224.c b/drivers/power/pmic/tps65224.c new file mode 100644 index 0000000000..33395f6edf --- /dev/null +++ b/drivers/power/pmic/tps65224.c @@ -0,0 +1,141 @@ +// 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 <i2c.h> +#include <log.h> +#include <power/pmic.h> +#include <power/regulator.h> +#include <power/tps65224.h> +#include <dm/device.h> + +static const struct pmic_child_info pmic_children_info[] = { + { .prefix = "ldo", .driver = TPS65224_LDO_DRIVER }, + { .prefix = "buck", .driver = TPS65224_BUCK_DRIVER }, + { }, +}; + +static int tps65224_write(struct udevice *dev, uint reg, const uint8_t *buff, + int len) +{ + if (dm_i2c_write(dev, reg, buff, len)) { + pr_err("write error to device: %p register: %#x!\n", dev, reg); + return -EIO; + } + + return 0; +} + +static int tps65224_read(struct udevice *dev, uint reg, uint8_t *buff, int len) +{ + if (dm_i2c_read(dev, reg, buff, len)) { + pr_err("read error from device: %p register: %#x!\n", dev, reg); + return -EIO; + } + + return 0; +} + +static int tps65224_bind(struct udevice *dev) +{ + ofnode regulators_node; + int children; + + if (dev->driver_data == TPS65224_WD) + return 0; + + regulators_node = dev_read_subnode(dev, "regulators"); + if (!ofnode_valid(regulators_node)) { + debug("%s: %s regulators subnode not found!\n", __func__, + dev->name); + return -ENXIO; + } + + debug("%s: '%s' - found regulators subnode\n", __func__, dev->name); + + children = pmic_bind_children(dev, regulators_node, pmic_children_info); + if (!children) + printf("%s: %s - no child found\n", __func__, dev->name); + + /* Probe all the child devices */ + return dm_scan_fdt_dev(dev); +} + +static int stop_watchdog(struct udevice *wd_i2c_dev) +{ + int ret; + + /* Maintain WD long window */ + ret = dm_i2c_reg_read(wd_i2c_dev, TPS65224_WD_MODE_REG); + if (ret < 0) { + debug("failed to read i2c reg (%d)\n", ret); + return ret; + } + + ret &= ~TPS65224_WD_PWRHOLD_MASK; + ret |= TPS65224_WD_PWRHOLD_MASK; + ret = dm_i2c_reg_write(wd_i2c_dev, TPS65224_WD_MODE_REG, ret); + if (ret) { + debug("%s: %s write WD_PWRHOLD fail!\n", __func__, wd_i2c_dev->name); + return ret; + } + + ret = dm_i2c_reg_read(wd_i2c_dev, TPS65224_WD_MODE_REG); + if (ret < 0) { + debug("failed to read back i2c reg (%d)\n", ret); + return ret; + } + + /* Disable WD */ + ret = dm_i2c_reg_read(wd_i2c_dev, TPS65224_WD_THR_CFG); + if (ret < 0) { + debug("failed to read i2c reg (%d)\n", ret); + return ret; + } + + ret &= ~TPS65224_WD_EN_MASK; + ret = dm_i2c_reg_write(wd_i2c_dev, TPS65224_WD_THR_CFG, ret); + if (ret) { + debug("%s: %s write WD_EN fail!\n", __func__, wd_i2c_dev->name); + return ret; + } + + ret = dm_i2c_reg_read(wd_i2c_dev, TPS65224_WD_THR_CFG); + if (ret < 0) { + debug("failed to read back i2c reg (%d)\n", ret); + return ret; + } + + return 0; +} + +static int tps65224_probe(struct udevice *dev) +{ + if (dev->driver_data == TPS65224_WD) + return stop_watchdog(dev); + + return 0; +} + +static struct dm_pmic_ops tps65224_ops = { + .read = tps65224_read, + .write = tps65224_write, +}; + +static const struct udevice_id tps65224_ids[] = { + { .compatible = "ti,tps65224", .data = TPS65224 }, + { .compatible = "ti,tps65224_watchdog", .data = TPS65224_WD }, + { } +}; + +U_BOOT_DRIVER(pmic_tps65224) = { + .name = "tps65224_pmic", + .id = UCLASS_PMIC, + .of_match = tps65224_ids, + .bind = tps65224_bind, + .probe = tps65224_probe, + .ops = &tps65224_ops, +}; diff --git a/include/power/tps65224.h b/include/power/tps65224.h new file mode 100644 index 0000000000..24e91b6a67 --- /dev/null +++ b/include/power/tps65224.h @@ -0,0 +1,57 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * (C) Copyright 2023 Texas Instruments Incorporated, <www.ti.com> + * + */ +#ifndef _POWER_TPS65224_H_ +#define _POWER_TPS65224_H_ + +#define TPS65224 0x0 +#define TPS65224_WD 0x20 + +/* I2C device address for pmic tps65224 */ +#define TPS65224_I2C_ADDR (0x12 >> 1) +#define TPS65224_LDO_NUM 3 +#define TPS65224_BUCK_NUM 4 + +/* Drivers name */ +#define TPS65224_LDO_DRIVER "tps65224_ldo" +#define TPS65224_BUCK_DRIVER "tps65224_buck" + +#define TPS65224_BUCK_VOLT_MASK 0xFF +#define TPS65224_BUCK1_VOLT_MAX_HEX 0xFD +#define TPS65224_BUCK234_VOLT_MAX_HEX 0x45 +#define TPS65224_BUCK_VOLT_MAX 3300000 +#define TPS65224_BUCK_MODE_MASK 0x1 + +#define TPS65224_LDO_VOLT_MASK (0x3F << 1) +#define TPS65224_LDO_VOLT_MAX_HEX 0x3A +#define TPS65224_LDO_VOLT_MIN_HEX 0x4 +#define TPS65224_LDO1_VOLT_MAX 3300000 +#define TPS65224_LDO23_VOLT_MAX 3400000 +#define TPS65224_LDO_MODE_MASK 0x1 +#define TPS65224_LDO_BYPASS_EN 0x80 +#define TP65224_BUCK_CONF_SLEW_MASK 0x3 + +/* 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_MIN 1200000 +#define TPS65224_LDO23_VOLT_MIN 600000 +#define TPS65224_LDO4_VOLT_MIN 1200000 +#define TPS65224_LDO1_VSET_MIN 0x0C +#define TPS65224_LDO23_VSET_MIN 0x00 +#define TPS65224_LDO123_VSET_MIN 0x0 +#define TPS65224_LDO1_VSET_MAX 0x36 +#define TPS65224_LDO23_VSET_MAX 0x38 +#define TPS65224_LDO123_STEP 50000 +#define TPS65224_LDO4_STEP 25000 + +#define TPS65224_WD_MODE_REG 0x406 +#define TPS65224_WD_PWRHOLD_MASK BIT(2) +#define TPS65224_WD_THR_CFG 0x409 +#define TPS65224_WD_EN_MASK BIT(6) + +#endif // _POWER_TPS65224_H_