This adds basic register access and child regulator binding for the Monolithic MP5416 Power Management IC which integrates four DC/DC switching converters and five LDO regulators.
Signed-off-by: Tim Harvey tharvey@gateworks.com --- drivers/power/pmic/Kconfig | 15 +++++++ drivers/power/pmic/Makefile | 1 + drivers/power/pmic/mp5416.c | 98 +++++++++++++++++++++++++++++++++++++++++++++ include/power/mp5416.h | 41 +++++++++++++++++++ 4 files changed, 155 insertions(+) create mode 100644 drivers/power/pmic/mp5416.c create mode 100644 include/power/mp5416.h
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig index 7d51510..583fd3d 100644 --- a/drivers/power/pmic/Kconfig +++ b/drivers/power/pmic/Kconfig @@ -91,6 +91,21 @@ config DM_PMIC_FAN53555 The driver implements read/write operations for use with the FAN53555 regulator driver and binds the regulator driver to its node.
+config DM_PMIC_MP5416 + bool "Enable Driver Model for PMIC MP5416" + depends on DM_PMIC + help + This config enables implementation of driver-model pmic uclass features + for PMIC MP5416. The driver implements read/write operations. + +config SPL_DM_PMIC_MP5416 + bool "Enable Driver Model for PMIC MP5416 in SPL stage" + depends on DM_PMIC + help + This config enables implementation of driver-model pmic uclass + features for PMIC MP5416. The driver implements read/write + operations. + config DM_PMIC_PCA9450 bool "Enable Driver Model for PMIC PCA9450" depends on DM_PMIC diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile index 9cd6c37..2b2a6dd 100644 --- a/drivers/power/pmic/Makefile +++ b/drivers/power/pmic/Makefile @@ -10,6 +10,7 @@ obj-$(CONFIG_DM_PMIC_MAX77686) += max77686.o obj-$(CONFIG_DM_PMIC_MAX8998) += max8998.o obj-$(CONFIG_DM_PMIC_MC34708) += mc34708.o obj-$(CONFIG_$(SPL_)DM_PMIC_BD71837) += bd71837.o +obj-$(CONFIG_$(SPL_)DM_PMIC_MP5416) += mp5416.o obj-$(CONFIG_$(SPL_)DM_PMIC_PFUZE100) += pfuze100.o obj-$(CONFIG_$(SPL_)DM_PMIC_PCA9450) += pca9450.o obj-$(CONFIG_PMIC_S2MPS11) += s2mps11.o diff --git a/drivers/power/pmic/mp5416.c b/drivers/power/pmic/mp5416.c new file mode 100644 index 0000000..458c4df --- /dev/null +++ b/drivers/power/pmic/mp5416.c @@ -0,0 +1,98 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2020 Gateworks Corporation + */ +#include <common.h> +#include <errno.h> +#include <dm.h> +#include <i2c.h> +#include <log.h> +#include <power/pmic.h> +#include <power/regulator.h> +#include <power/mp5416.h> + +DECLARE_GLOBAL_DATA_PTR; + +static const struct pmic_child_info pmic_children_info[] = { + /* buck */ + { .prefix = "b", .driver = MP6416_REGULATOR_DRIVER }, + /* ldo */ + { .prefix = "l", .driver = MP6416_REGULATOR_DRIVER }, + { }, +}; + +static int mp5416_reg_count(struct udevice *dev) +{ + return MP5416_NUM_OF_REGS - 1; +} + +static int mp5416_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!", dev, reg); + return -EIO; + } + + return 0; +} + +static int mp5416_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!", dev, reg); + return -EIO; + } + + return 0; +} + +static int mp5416_bind(struct udevice *dev) +{ + int children; + ofnode regulators_node; + + debug("%s %s\n", __func__, dev->name); + 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) + debug("%s: %s - no child found\n", __func__, dev->name); + + /* Always return success for this device */ + return 0; +} + +static int mp5416_probe(struct udevice *dev) +{ + debug("%s %s\n", __func__, dev->name); + + return 0; +} + +static struct dm_pmic_ops mp5416_ops = { + .reg_count = mp5416_reg_count, + .read = mp5416_read, + .write = mp5416_write, +}; + +static const struct udevice_id mp5416_ids[] = { + { .compatible = "mps,mp5416", }, + { } +}; + +U_BOOT_DRIVER(pmic_mp5416) = { + .name = "mp5416 pmic", + .id = UCLASS_PMIC, + .of_match = mp5416_ids, + .bind = mp5416_bind, + .probe = mp5416_probe, + .ops = &mp5416_ops, +}; diff --git a/include/power/mp5416.h b/include/power/mp5416.h new file mode 100644 index 0000000..dc096fe --- /dev/null +++ b/include/power/mp5416.h @@ -0,0 +1,41 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* Copyright (C) 2020 Gateworks Corporation */ + +#ifndef MP5416_H_ +#define MP5416_H_ + +#define MP6416_REGULATOR_DRIVER "mp5416_regulator" + +enum { + MP5416_CTL0 = 0x00, + MP5416_CTL1 = 0x01, + MP5416_CTL2 = 0x02, + MP5416_ILIMIT = 0x03, + MP5416_VSET_SW1 = 0x04, + MP5416_VSET_SW2 = 0x05, + MP5416_VSET_SW3 = 0x06, + MP5416_VSET_SW4 = 0x07, + MP5416_VSET_LDO2 = 0x08, + MP5416_VSET_LDO3 = 0x09, + MP5416_VSET_LDO4 = 0x0a, + MP5416_VSET_LDO5 = 0x0b, + MP5416_STATUS1 = 0x0d, + MP5416_STATUS2 = 0x0e, + MP5416_STATUS3 = 0x0f, + MP5416_ID2 = 0x11, + MP5416_NUM_OF_REGS = 0x12, +}; + +#define MP5416_VSET_EN BIT(7) +#define MP5416_VSET_SW1_GVAL(x) ((((x) & 0x7f) * 12500) + 600000) +#define MP5416_VSET_SW2_GVAL(x) ((((x) & 0x7f) * 25000) + 800000) +#define MP5416_VSET_SW3_GVAL(x) ((((x) & 0x7f) * 12500) + 600000) +#define MP5416_VSET_SW4_GVAL(x) ((((x) & 0x7f) * 25000) + 800000) +#define MP5416_VSET_LDO_GVAL(x) ((((x) & 0x7f) * 25000) + 800000) +#define MP5416_VSET_LDO_SVAL(x) ((((x) & 0x7f) * 25000) + 800000) +#define MP5416_VSET_SW1_SVAL(x) (((x) - 600000) / 12500) +#define MP5416_VSET_SW2_SVAL(x) (((x) - 800000) / 25000) +#define MP5416_VSET_SW3_SVAL(x) (((x) - 600000) / 12500) +#define MP5416_VSET_SW4_SVAL(x) (((x) - 800000) / 25000) + +#endif