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rockchip: rk3188: Add sysreset driver

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Driver for the sysreset of Rockchip rk3188 socs.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Kever Yang <kever.yang@rock-chips.com>
This commit is contained in:
Heiko Stübner 2017-02-18 19:46:32 +01:00 committed by Simon Glass
parent 155cd37f2c
commit 37c07c5b1f
2 changed files with 48 additions and 0 deletions
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1
drivers/sysreset/Makefile
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@ -9,6 +9,7 @@ obj-$(CONFIG_SYSRESET) += sysreset-uclass.o
ifndef CONFIG_SPL_BUILD
obj-$(CONFIG_ROCKCHIP_RK3036) += sysreset_rk3036.o
endif
obj-$(CONFIG_ROCKCHIP_RK3188) += sysreset_rk3188.o
obj-$(CONFIG_ROCKCHIP_RK3288) += sysreset_rk3288.o
obj-$(CONFIG_ROCKCHIP_RK3399) += sysreset_rk3399.o
obj-$(CONFIG_SANDBOX) += sysreset_sandbox.o

47
drivers/sysreset/sysreset_rk3188.c Normal file
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@ -0,0 +1,47 @@
/*
* (C) Copyright 2015 Google, Inc
*
* 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_rk3188.h>
#include <asm/arch/hardware.h>
#include <linux/err.h>
int rk3188_sysreset_request(struct udevice *dev, enum sysreset_t type)
{
struct rk3188_cru *cru = rockchip_get_cru();
if (IS_ERR(cru))
return PTR_ERR(cru);
switch (type) {
case SYSRESET_WARM:
rk_clrreg(&cru->cru_mode_con, 0xffff);
writel(0xeca8, &cru->cru_glb_srst_snd_value);
break;
case SYSRESET_COLD:
rk_clrreg(&cru->cru_mode_con, 0xffff);
writel(0xfdb9, &cru->cru_glb_srst_fst_value);
break;
default:
return -EPROTONOSUPPORT;
}
return -EINPROGRESS;
}
static struct sysreset_ops rk3188_sysreset = {
.request = rk3188_sysreset_request,
};
U_BOOT_DRIVER(sysreset_rk3188) = {
.name = "rk3188_sysreset",
.id = UCLASS_SYSRESET,
.ops = &rk3188_sysreset,
};