u-boot/drivers/sysreset/sysreset_rk322x.c
Kever Yang a21e132894 rockchip: rk322x: add sysreset driver
Rockchip rk322x sysreset is much like rk3036 and other Rockchip SoCs,
only difference is that the target register address is different.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2017-07-11 12:13:46 +02:00

45 lines
921 B
C

/*
* (C) Copyright 2017 Rockchip Electronics Co., Ltd
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <sysreset.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/cru_rk322x.h>
#include <asm/arch/hardware.h>
#include <linux/err.h>
int rk322x_sysreset_request(struct udevice *dev, enum sysreset_t type)
{
struct rk322x_cru *cru = rockchip_get_cru();
if (IS_ERR(cru))
return PTR_ERR(cru);
switch (type) {
case SYSRESET_WARM:
writel(0xeca8, &cru->cru_glb_srst_snd_value);
break;
case SYSRESET_COLD:
writel(0xfdb9, &cru->cru_glb_srst_fst_value);
break;
default:
return -EPROTONOSUPPORT;
}
return -EINPROGRESS;
}
static struct sysreset_ops rk322x_sysreset = {
.request = rk322x_sysreset_request,
};
U_BOOT_DRIVER(sysreset_rk322x) = {
.name = "rk322x_sysreset",
.id = UCLASS_SYSRESET,
.ops = &rk322x_sysreset,
};