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// SPDX-License-Identifier: GPL-2.0-only
// SPDX-FileCopyrightText: 2020 David Jander, Protonic Holland
#include <bootsource.h>
#include <common.h>
#include <envfs.h>
#include <environment.h>
#include <i2c/i2c.h>
#include <init.h>
#include <mach/bbu.h>
static int prt_prt8mm_init_power(void)
{
struct i2c_adapter *adapter = NULL;
struct i2c_client client;
int ret;
char buf[2];
client.addr = 0x60;
adapter = i2c_get_adapter(1);
if (!adapter) {
printf("i2c bus not found\n");
return -ENODEV;
}
client.adapter = adapter;
buf[0] = 0xe3;
ret = i2c_write_reg(&client, 0x00, buf, 1); // VSEL0 = 0.95V, force PWM
if (ret < 0) {
printf("i2c write error\n");
return -ENODEV;
}
buf[0] = 0xe0;
ret = i2c_write_reg(&client, 0x01, buf, 1); // VSEL1 = 0.92V, force PWM
if (ret < 0) {
printf("i2c write error\n");
return -ENODEV;
}
return 0;
}
static int prt_prt8mm_probe(struct device_d *dev)
{
int emmc_bbu_flag = 0;
int sd_bbu_flag = 0;
prt_prt8mm_init_power();
barebox_set_hostname("prt8mm");
if (bootsource_get() == BOOTSOURCE_MMC) {
if (bootsource_get_instance() == 2) {
of_device_enable_path("/chosen/environment-emmc");
emmc_bbu_flag = BBU_HANDLER_FLAG_DEFAULT;
} else {
of_device_enable_path("/chosen/environment-sd");
sd_bbu_flag = BBU_HANDLER_FLAG_DEFAULT;
}
} else {
of_device_enable_path("/chosen/environment-emmc");
emmc_bbu_flag = BBU_HANDLER_FLAG_DEFAULT;
}
imx8m_bbu_internal_mmc_register_handler("SD", "/dev/mmc1.barebox",
sd_bbu_flag);
imx8m_bbu_internal_mmcboot_register_handler("eMMC", "/dev/mmc2",
emmc_bbu_flag);
defaultenv_append_directory(defaultenv_prt8m);
return 0;
}
static const struct of_device_id prt_imx8mm_of_match[] = {
{ .compatible = "prt,prt8mm", },
{ /* sentinel */ },
};
static struct driver_d prt_prt8mm_board_driver = {
.name = "board-protonic-imx8mm",
.probe = prt_prt8mm_probe,
.of_compatible = DRV_OF_COMPAT(prt_imx8mm_of_match),
};
device_platform_driver(prt_prt8mm_board_driver);
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