Add support to bind the regulators/child nodes with the pmic.
Signed-off-by: Keerthy j-keerthy@ti.com Reviewed-by: Simon Glass sjg@chromium.org Reviewed-by: Tom Rini trini@konsulko.com --- drivers/power/pmic/Kconfig | 7 +++++ drivers/power/pmic/Makefile | 1 + drivers/power/pmic/palmas.c | 77 +++++++++++++++++++++++++++++++++++++++++++++ include/power/palmas.h | 25 +++++++++++++++ 4 files changed, 110 insertions(+) create mode 100644 drivers/power/pmic/palmas.c create mode 100644 include/power/palmas.h
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig index 69f8d51..92931c5 100644 --- a/drivers/power/pmic/Kconfig +++ b/drivers/power/pmic/Kconfig @@ -135,3 +135,10 @@ config PMIC_TPS65090 FETs and a battery charger. This driver provides register access only, and you can enable the regulator/charger drivers separately if required. + +config PMIC_PALMAS + bool "Enable driver for Texas Instruments PALMAS PMIC" + depends on DM_PMIC + ---help--- + The PALMAS is a PMIC containing several LDOs, SMPS. + This driver binds the pmic children. diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile index 52b4f71..828c0cf 100644 --- a/drivers/power/pmic/Makefile +++ b/drivers/power/pmic/Makefile @@ -15,6 +15,7 @@ obj-$(CONFIG_PMIC_PM8916) += pm8916.o obj-$(CONFIG_PMIC_RK808) += rk808.o obj-$(CONFIG_PMIC_TPS65090) += tps65090.o obj-$(CONFIG_PMIC_S5M8767) += s5m8767.o +obj-$(CONFIG_$(SPL_)PMIC_PALMAS) += palmas.o
obj-$(CONFIG_POWER_LTC3676) += pmic_ltc3676.o obj-$(CONFIG_POWER_MAX77696) += pmic_max77696.o diff --git a/drivers/power/pmic/palmas.c b/drivers/power/pmic/palmas.c new file mode 100644 index 0000000..05428d5 --- /dev/null +++ b/drivers/power/pmic/palmas.c @@ -0,0 +1,77 @@ +/* + * (C) Copyright 2016 Texas Instruments Incorporated, <www.ti.com> + * Keerthy j-keerthy@ti.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <fdtdec.h> +#include <errno.h> +#include <dm.h> +#include <i2c.h> +#include <power/pmic.h> +#include <power/regulator.h> +#include <power/palmas.h> +#include <dm/device.h> + +DECLARE_GLOBAL_DATA_PTR; + +static const struct pmic_child_info pmic_children_info[] = { + { .prefix = "ldo", .driver = PALMAS_LDO_DRIVER }, + { .prefix = "smps", .driver = PALMAS_SMPS_DRIVER }, + { }, +}; + +static int palmas_bind(struct udevice *dev) +{ + int pmic_node = -1, regulators_node; + const void *blob = gd->fdt_blob; + int children; + int node = dev->of_offset; + int subnode, len; + + fdt_for_each_subnode(blob, subnode, node) { + const char *name; + char *temp; + + name = fdt_get_name(blob, subnode, &len); + temp = strstr(name, "pmic"); + if (temp) { + pmic_node = subnode; + break; + } + } + + if (pmic_node <= 0) { + debug("%s: %s pmic subnode not found!", __func__, dev->name); + return -ENXIO; + } + + regulators_node = fdt_subnode_offset(blob, pmic_node, "regulators"); + + if (regulators_node <= 0) { + debug("%s: %s reg subnode not found!", __func__, dev->name); + return -ENXIO; + } + + children = pmic_bind_children(dev, regulators_node, pmic_children_info); + if (!children) + debug("%s: %s - no child found\n", __func__, dev->name); + + /* Always return success for this device */ + return 0; +} + +static const struct udevice_id palmas_ids[] = { + { .compatible = "ti,tps659038", .data = TPS659038 }, + { .compatible = "ti,tps65917" , .data = TPS65917 }, + { } +}; + +U_BOOT_DRIVER(pmic_palmas) = { + .name = "palmas_pmic", + .id = UCLASS_PMIC, + .of_match = palmas_ids, + .bind = palmas_bind, +}; diff --git a/include/power/palmas.h b/include/power/palmas.h new file mode 100644 index 0000000..bad5a35 --- /dev/null +++ b/include/power/palmas.h @@ -0,0 +1,25 @@ +#define PALMAS 0x0 +#define TPS659038 0x1 +#define TPS65917 0x2 + +/* I2C device address for pmic palmas */ +#define PALMAS_I2C_ADDR (0x12 >> 1) +#define PALMAS_LDO_NUM 11 +#define PALMAS_SMPS_NUM 8 + +/* Drivers name */ +#define PALMAS_LDO_DRIVER "palmas_ldo" +#define PALMAS_SMPS_DRIVER "palmas_smps" + +#define PALMAS_SMPS_VOLT_MASK 0x7F +#define PALMAS_SMPS_RANGE_MASK 0x80 +#define PALMAS_SMPS_VOLT_MAX_HEX 0x7F +#define PALMAS_SMPS_VOLT_MAX 3300000 +#define PALMAS_SMPS_MODE_MASK 0x3 +#define PALMAS_SMPS_STATUS_MASK 0x30 + +#define PALMAS_LDO_VOLT_MASK 0x3F +#define PALMAS_LDO_VOLT_MAX_HEX 0x3F +#define PALMAS_LDO_VOLT_MAX 3300000 +#define PALMAS_LDO_MODE_MASK 0x1 +#define PALMAS_LDO_STATUS_MASK 0x10