luckfox-pico-sdk/sysdrv/source/uboot/u-boot/drivers/power/pmic/pmic_sy7636a.c
luckfox-eng29 8f34c2760d project:build.sh: Added fastboot support; custom modifications to U-Boot and kernel implemented using patches.
project:cfg:BoardConfig_IPC: Added fastboot BoardConfig file and firmware post-scripts, distinguishing between
the BoardConfigs for Luckfox Pico Pro and Luckfox Pico Max. project:app: Added fastboot_client and rk_smart_door
for quick boot applications; updated rkipc app to adapt to the latest media library. media:samples: Added more
usage examples. media:rockit: Fixed bugs; removed support for retrieving data frames from VPSS. media:isp:
Updated rkaiq library and related tools to support connection to RKISP_Tuner. sysdrv:Makefile: Added support for
compiling drv_ko on Luckfox Pico Ultra W using Ubuntu; added support for custom root filesystem.
sysdrv:tools:board: Updated Buildroot optional mirror sources, updated some software versions, and stored device
tree files and configuration files that undergo multiple modifications for U-Boot and kernel separately.
sysdrv:source:mcu: Used RISC-V MCU SDK with RT-Thread system, mainly for initializing camera AE during quick
boot. sysdrv:source:uboot: Added support for fastboot; added high baud rate DDR bin for serial firmware upgrades.
sysdrv:source:kernel: Upgraded to version 5.10.160; increased NPU frequency for RV1106G3; added support for
fastboot.

Signed-off-by: luckfox-eng29 <eng29@luckfox.com>
2024-10-14 09:47:04 +08:00

134 lines
2.9 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2024 Rockchip Electronics Co., Ltd.
*/
#include <common.h>
#include <asm/gpio.h>
#include <dm.h>
#include <dm/lists.h>
#include <dm/device-internal.h>
#include <dm/of_access.h>
#include <dm/pinctrl.h>
#include <i2c.h>
#include <power/pmic.h>
#include <power/regulator.h>
#include <power/sy7636a.h>
DECLARE_GLOBAL_DATA_PTR;
static const struct pmic_child_info pmic_children_info[] = {
{ .prefix = "vcom", .driver = SY7636A_REGULATOR_DRIVER_NAME },
{ },
};
static const struct pmic_child_info thermal_child_info[] = {
{ .prefix = "sy7636a_thermal", .driver = SY7636A_THERMAL_COMTATIBLE_NAME },
{ },
};
static int sy7636a_reg_count(struct udevice *dev)
{
return SY7636A_REG_MAX;
}
static int sy7636a_write(struct udevice *dev, uint reg, const uint8_t *buff, int len)
{
int ret;
ret = dm_i2c_write(dev, reg, buff, len);
if (ret) {
pr_err("sy7636a failed to write register: %#x, ret:%d\n", reg, ret);
return ret;
}
return 0;
}
static int sy7636a_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
{
int ret;
ret = dm_i2c_read(dev, reg, buff, len);
if (ret) {
pr_err("sy7636a failed to write register: %#x, ret:%d\n", reg, ret);
return ret;
}
return 0;
}
static int pmic_sy7636a_probe(struct udevice *dev)
{
struct gpio_desc gpio_desc[8];
uint8_t data;
int num;
int ret;
num = gpio_request_list_by_name(dev, "enable-gpios", gpio_desc, 8,
GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
if (num < 0)
dev_warn(dev, "sy7636a failed to get enable gpios:%d\n", ret);
/* After enable, SY7636A requires 2.5ms delay time to enter active mode */
udelay(2500);
/* check is device i2c present */
ret = dm_i2c_read(dev, SY7636A_REG_OPERATION_MODE_CRL, &data, 1);
if (ret) {
dev_warn(dev, "sy7636a i2c not present: %d\n", ret);
goto fail;
}
return 0;
fail:
if (num > 0)
gpio_free_list(dev, gpio_desc, num);
return ret;
}
static int pmic_sy7636a_bind(struct udevice *dev)
{
ofnode regulators_node;
int children;
regulators_node = dev_read_subnode(dev, "regulators");
if (!ofnode_valid(regulators_node)) {
dev_err(dev, "Regulators subnode not found!");
return -ENXIO;
}
children = pmic_bind_children(dev, regulators_node, pmic_children_info);
if (!children)
dev_err(dev, "Failed to bind sy7636a regulator\n");
children = pmic_bind_children(dev, dev->node, thermal_child_info);
if (!children)
dev_err(dev, "Failed to bind sy7636a thermal\n");
return 0;
}
static struct dm_pmic_ops sy7636a_ops = {
.reg_count = sy7636a_reg_count,
.read = sy7636a_read,
.write = sy7636a_write,
};
static const struct udevice_id pmic_sy7636a_of_match[] = {
{ .compatible = "silergy,sy7636a" },
{ .compatible = "silergy,sy7636a-pmic" },
{}
};
U_BOOT_DRIVER(pmic_sy7636a) = {
.name = "pmic_sy7636a",
.id = UCLASS_PMIC,
.of_match = pmic_sy7636a_of_match,
.probe = pmic_sy7636a_probe,
.ops = &sy7636a_ops,
.bind = pmic_sy7636a_bind,
};