diff options
| -rw-r--r-- | drivers/power/pmic/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/power/pmic/Makefile | 1 | ||||
| -rw-r--r-- | drivers/power/pmic/tps65941.c | 83 | ||||
| -rw-r--r-- | include/power/tps65941.h | 26 |
4 files changed, 117 insertions, 0 deletions
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig index 4718dc700c..b4bf018674 100644 --- a/drivers/power/pmic/Kconfig +++ b/drivers/power/pmic/Kconfig @@ -275,3 +275,10 @@ config SPL_PMIC_LP87565 help The LP87565 is a PMIC containing a bunch of SMPS. This driver binds the pmic children in SPL. + +config PMIC_TPS65941 + bool "Enable driver for Texas Instruments TPS65941 PMIC" + depends on DM_PMIC + help + The TPS65941 is a PMIC containing a bunch of SMPS & LDOs. + This driver binds the pmic children. diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile index 888dbb2857..ec64327805 100644 --- a/drivers/power/pmic/Makefile +++ b/drivers/power/pmic/Makefile @@ -39,3 +39,4 @@ obj-$(CONFIG_POWER_TPS65218) += pmic_tps65218.o obj-$(CONFIG_POWER_TPS65910) += pmic_tps65910.o obj-$(CONFIG_POWER_HI6553) += pmic_hi6553.o obj-$(CONFIG_POWER_MC34VR500) += pmic_mc34vr500.o +obj-$(CONFIG_PMIC_TPS65941) += tps65941.o diff --git a/drivers/power/pmic/tps65941.c b/drivers/power/pmic/tps65941.c new file mode 100644 index 0000000000..e8f3c950bd --- /dev/null +++ b/drivers/power/pmic/tps65941.c @@ -0,0 +1,83 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2019 Texas Instruments Incorporated, <www.ti.com> + * Keerthy <j-keerthy@ti.com> + */ + +#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/tps65941.h> +#include <dm/device.h> + +static const struct pmic_child_info pmic_children_info[] = { + { .prefix = "ldo", .driver = TPS65941_LDO_DRIVER }, + { .prefix = "buck", .driver = TPS65941_BUCK_DRIVER }, + { }, +}; + +static int tps65941_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 tps65941_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 tps65941_bind(struct udevice *dev) +{ + ofnode regulators_node; + int children; + + 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); + + /* Always return success for this device */ + return 0; +} + +static struct dm_pmic_ops tps65941_ops = { + .read = tps65941_read, + .write = tps65941_write, +}; + +static const struct udevice_id tps65941_ids[] = { + { .compatible = "ti,tps659411", .data = TPS659411 }, + { .compatible = "ti,tps659413", .data = TPS659413 }, + { } +}; + +U_BOOT_DRIVER(pmic_tps65941) = { + .name = "tps65941_pmic", + .id = UCLASS_PMIC, + .of_match = tps65941_ids, + .bind = tps65941_bind, + .ops = &tps65941_ops, +}; diff --git a/include/power/tps65941.h b/include/power/tps65941.h new file mode 100644 index 0000000000..2d48b31ae3 --- /dev/null +++ b/include/power/tps65941.h @@ -0,0 +1,26 @@ +#define TPS659411 0x0 +#define TPS659412 0x1 +#define TPS659413 0x2 +#define TPS659414 0x3 + +/* I2C device address for pmic tps65941 */ +#define TPS65941_I2C_ADDR (0x12 >> 1) +#define TPS65941_LDO_NUM 4 +#define TPS65941_BUCK_NUM 5 + +/* Drivers name */ +#define TPS65941_LDO_DRIVER "tps65941_ldo" +#define TPS65941_BUCK_DRIVER "tps65941_buck" + +#define TPS65941_BUCK_VOLT_MASK 0xFF +#define TPS65941_BUCK_VOLT_MAX_HEX 0xFF +#define TPS65941_BUCK_VOLT_MAX 3340000 +#define TPS65941_BUCK_MODE_MASK 0x1 + +#define TPS65941_LDO_VOLT_MASK 0x3E +#define TPS65941_LDO_VOLT_MAX_HEX 0x3A +#define TPS65941_LDO_VOLT_MIN_HEX 0x4 +#define TPS65941_LDO_VOLT_MAX 3300000 +#define TPS65941_LDO_MODE_MASK 0x1 +#define TPS65941_LDO_BYPASS_EN 0x80 +#define TP65941_BUCK_CONF_SLEW_MASK 0x7 |