power: pmic: add the base MAX77663 PMIC support
Add support to bind the regulators/child nodes with the pmic.
Also adds the pmic i2c based read/write functions to access pmic
registers.
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
index 4a6f0ce..54665d7 100644
--- a/drivers/power/pmic/Kconfig
+++ b/drivers/power/pmic/Kconfig
@@ -184,6 +184,15 @@
This config enables implementation of driver-model pmic uclass features
for PMIC PFUZE100 in SPL. The driver implements read/write operations.
+config DM_PMIC_MAX77663
+ bool "Enable Driver Model for PMIC MAX77663"
+ ---help---
+ This config enables implementation of driver-model pmic uclass features
+ for PMIC MAX77663. The driver implements read/write operations.
+ This is a Power Management IC with a decent set of peripherals from which
+ 4 DC-to-DC Step-Down (SD) Regulators, 9 Low-Dropout Linear (LDO) Regulators,
+ 8 GPIOs, Real-Time Clock (RTC) and more with I2C Compatible Interface.
+
config DM_PMIC_MAX77686
bool "Enable Driver Model for PMIC MAX77686"
---help---
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index 0b3b3d6..414a9d8 100644
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -6,6 +6,7 @@
obj-$(CONFIG_$(SPL_TPL_)DM_PMIC) += pmic-uclass.o
obj-$(CONFIG_$(SPL_)DM_PMIC_FAN53555) += fan53555.o
obj-$(CONFIG_$(SPL_)DM_PMIC_DA9063) += da9063.o
+obj-$(CONFIG_$(SPL_)DM_PMIC_MAX77663) += max77663.o
obj-$(CONFIG_DM_PMIC_MAX77686) += max77686.o
obj-$(CONFIG_DM_PMIC_MAX8998) += max8998.o
obj-$(CONFIG_DM_PMIC_MC34708) += mc34708.o
diff --git a/drivers/power/pmic/max77663.c b/drivers/power/pmic/max77663.c
new file mode 100644
index 0000000..fac97ed
--- /dev/null
+++ b/drivers/power/pmic/max77663.c
@@ -0,0 +1,81 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright(C) 2023 Svyatoslav Ryhel <clamor95@gmail.com>
+ */
+
+#include <dm.h>
+#include <dm/lists.h>
+#include <power/pmic.h>
+#include <power/max77663.h>
+
+static const struct pmic_child_info pmic_children_info[] = {
+ { .prefix = "ldo", .driver = MAX77663_LDO_DRIVER },
+ { .prefix = "sd", .driver = MAX77663_SD_DRIVER },
+ { },
+};
+
+static int max77663_write(struct udevice *dev, uint reg, const uint8_t *buff,
+ int len)
+{
+ int ret;
+
+ ret = dm_i2c_write(dev, reg, buff, len);
+ if (ret) {
+ log_debug("write error to device: %p register: %#x!\n", dev, reg);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int max77663_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
+{
+ int ret;
+
+ ret = dm_i2c_read(dev, reg, buff, len);
+ if (ret) {
+ log_debug("read error from device: %p register: %#x!\n", dev, reg);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int max77663_bind(struct udevice *dev)
+{
+ ofnode regulators_node;
+ int children;
+
+ regulators_node = dev_read_subnode(dev, "regulators");
+ if (!ofnode_valid(regulators_node)) {
+ log_err("%s regulators subnode not found!\n", 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)
+ log_err("%s - no child found\n", dev->name);
+
+ /* Always return success for this device */
+ return 0;
+}
+
+static struct dm_pmic_ops max77663_ops = {
+ .read = max77663_read,
+ .write = max77663_write,
+};
+
+static const struct udevice_id max77663_ids[] = {
+ { .compatible = "maxim,max77663" },
+ { }
+};
+
+U_BOOT_DRIVER(pmic_max77663) = {
+ .name = "max77663_pmic",
+ .id = UCLASS_PMIC,
+ .of_match = max77663_ids,
+ .bind = max77663_bind,
+ .ops = &max77663_ops,
+};