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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2023 Renesas Electronics Corporation
*/
#include <dm.h>
#include <power/pmic.h>
#include <sysreset.h>
#define RAA215300_REG_SWRESET 0x6D
#define RAA215300_COLD_RESET BIT(0)
#define RAA215300_WARM_RESET BIT(1)
static int raa215300_sysreset_request(struct udevice *dev, enum sysreset_t type)
{
struct udevice *pmic = dev_get_parent(dev);
int ret;
u8 val;
/*
* The RAA215300 documentation names the available reset types
* differently to u-boot:
*
* - A "warm" reset via the RAA215300 PMIC will fully reset the SoC
* (CPU & GPIOs), so this corresponds to SYSRESET_COLD.
*
* - A "cold" reset via the RAA215300 PMIC will cycle all power supply
* rails, so this corresponds to SYSRESET_POWER.
*/
switch (type) {
case SYSRESET_COLD:
val = RAA215300_WARM_RESET;
break;
case SYSRESET_POWER:
val = RAA215300_COLD_RESET;
break;
default:
return -EPROTONOSUPPORT;
}
ret = pmic_reg_write(pmic, RAA215300_REG_SWRESET, val);
if (ret)
return ret;
return -EINPROGRESS;
}
static struct sysreset_ops raa215300_sysreset_ops = {
.request = raa215300_sysreset_request,
};
U_BOOT_DRIVER(raa215300_sysreset) = {
.name = "raa215300_sysreset",
.id = UCLASS_SYSRESET,
.ops = &raa215300_sysreset_ops,
};
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