u-boot/drivers/sysreset/sysreset_rk3328.c
Kever Yang 52f6c17ecb rockchip: rk3328: add sysreset driver
Add rk3328 sysreset driver.

Signed-off-by: William Zhang <william.zhang@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
2017-03-16 16:03:46 -06:00

45 lines
908 B
C

/*
* (C) Copyright 2016 Rockchip Electronics Co., Ltd
*
* SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <sysreset.h>
#include <asm/arch/clock.h>
#include <asm/arch/cru_rk3328.h>
#include <asm/arch/hardware.h>
#include <asm/io.h>
#include <linux/err.h>
int rk3328_sysreset_request(struct udevice *dev, enum sysreset_t type)
{
struct rk3328_cru *cru = rockchip_get_cru();
if (IS_ERR(cru))
return PTR_ERR(cru);
switch (type) {
case SYSRESET_WARM:
writel(0xeca8, &cru->glb_srst_snd_value);
break;
case SYSRESET_COLD:
writel(0xfdb9, &cru->glb_srst_fst_value);
break;
default:
return -EPROTONOSUPPORT;
}
return -EINPROGRESS;
}
static struct sysreset_ops rk3328_sysreset = {
.request = rk3328_sysreset_request,
};
U_BOOT_DRIVER(sysreset_rk3328) = {
.name = "rk3328_sysreset",
.id = UCLASS_SYSRESET,
.ops = &rk3328_sysreset,
};