2 * Copyright (C) 2014-2015 Samsung Electronics
3 * Przemyslaw Marczak <p.marczak@samsung.com>
5 * SPDX-License-Identifier: GPL-2.0+
13 #include <power/pmic.h>
14 #include <power/regulator.h>
15 #include <power/max77686_pmic.h>
17 DECLARE_GLOBAL_DATA_PTR;
19 static const struct pmic_child_info pmic_children_info[] = {
20 { .prefix = "LDO", .driver = MAX77686_LDO_DRIVER },
21 { .prefix = "BUCK", .driver = MAX77686_BUCK_DRIVER },
25 static int max77686_reg_count(struct udevice *dev)
27 return MAX77686_NUM_OF_REGS;
30 static int max77686_write(struct udevice *dev, uint reg, const uint8_t *buff,
33 if (dm_i2c_write(dev, reg, buff, len)) {
34 error("write error to device: %p register: %#x!", dev, reg);
41 static int max77686_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
43 if (dm_i2c_read(dev, reg, buff, len)) {
44 error("read error from device: %p register: %#x!", dev, reg);
51 static int max77686_bind(struct udevice *dev)
53 ofnode regulators_node;
56 regulators_node = dev_read_subnode(dev, "voltage-regulators");
57 if (!ofnode_valid(regulators_node)) {
58 debug("%s: %s regulators subnode not found!", __func__,
63 debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
65 children = pmic_bind_children(dev, regulators_node, pmic_children_info);
67 debug("%s: %s - no child found\n", __func__, dev->name);
69 /* Always return success for this device */
73 static struct dm_pmic_ops max77686_ops = {
74 .reg_count = max77686_reg_count,
75 .read = max77686_read,
76 .write = max77686_write,
79 static const struct udevice_id max77686_ids[] = {
80 { .compatible = "maxim,max77686" },
84 U_BOOT_DRIVER(pmic_max77686) = {
85 .name = "max77686_pmic",
87 .of_match = max77686_ids,
88 .bind = max77686_bind,