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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2023 Starfive, Inc.
- * Author: keith.zhao<keith.zhao@statfivetech.com>
- */
- #include <common.h>
- #include <fdtdec.h>
- #include <errno.h>
- #include <dm.h>
- #include <i2c.h>
- #include <log.h>
- #include <power/pmic.h>
- #include <power/regulator.h>
- #include <dm/device.h>
- #define LP8732 0x0
- #define LP8733 0x1
- #define LP873X_LDO_NUM 8
- /* Drivers name */
- #define LP873X_LDO_DRIVER "lp873x_ldo"
- #define LP873X_BUCK_DRIVER "lp873x_buck"
- #define LP873X_BUCK_VOLT_MASK 0xFF
- #define LP873X_BUCK_VOLT_MAX_HEX 0xFF
- #define LP873X_BUCK_VOLT_MAX 3360000
- #define LP873X_BUCK_MODE_MASK 0x1
- #define LP873X_LDO_VOLT_MASK 0x1F
- #define LP873X_LDO_VOLT_MAX_HEX 0x19
- #define LP873X_LDO_VOLT_MAX 3300000
- #define LP873X_LDO_MODE_MASK 0x1
- static const struct pmic_child_info pmic_children_info[] = {
- { .prefix = "ldo", .driver = LP873X_LDO_DRIVER },
- { },
- };
- static int lp873x_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 lp873x_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 starfive_bind(struct udevice *dev)
- {
- ofnode regulators_node;
- int children;
- regulators_node = dev_read_subnode(dev, "regulators");
- if (!ofnode_valid(regulators_node)) {
- printf("%s: %s regulators subnode not found!\n", __func__,
- dev->name);
- return -ENXIO;
- }
- 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 lp873x_ops = {
- .read = lp873x_read,
- .write = lp873x_write,
- };
- static const struct udevice_id starfive_ids[] = {
- { .compatible = "starfive,jh7110-evb-regulator", .data = LP8732 },
- { }
- };
- U_BOOT_DRIVER(pmic_starfive) = {
- .name = "pmic_starfive",
- .id = UCLASS_PMIC,
- .of_match = starfive_ids,
- .bind = starfive_bind,
- .ops = &lp873x_ops,
- };
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