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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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