Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-14 08:57:58 +00:00
Code Issues Projects Releases Packages Wiki Activity

sysreset: Support reset via Renesas RAA215300 PMIC

Browse source 
This patch adds support for resetting a board via the RAA215300 PMIC.

Note that 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.

Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
This commit is contained in:
Paul Barker 2024-02-27 20:40:33 +00:00 committed by Marek Vasut
parent 0c25eaeba4
commit 167eb89a21
3 changed files with 65 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
drivers/sysreset/Kconfig
View file

@ -229,6 +229,12 @@ config SYSRESET_MPC83XX
help
Reboot support for NXP MPC83xx SoCs.
config SYSRESET_RAA215300
bool "Support sysreset via Renesas RAA215300 PMIC"
depends on PMIC_RAA215300
help
Add support for the system reboot via the Renesas RAA215300 PMIC.
endif
endmenu

1
drivers/sysreset/Makefile
View file

@ -27,4 +27,5 @@ obj-$(CONFIG_SYSRESET_WATCHDOG) += sysreset_watchdog.o
obj-$(CONFIG_SYSRESET_RESETCTL) += sysreset_resetctl.o
obj-$(CONFIG_$(SPL_TPL_)SYSRESET_AT91) += sysreset_at91.o
obj-$(CONFIG_$(SPL_TPL_)SYSRESET_X86) += sysreset_x86.o
obj-$(CONFIG_SYSRESET_RAA215300) += sysreset_raa215300.o
obj-$(CONFIG_TARGET_XTFPGA) += sysreset_xtfpga.o

58
drivers/sysreset/sysreset_raa215300.c Normal file
View file

@ -0,0 +1,58 @@
// 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,
};