[people/ms/u-boot.git] / drivers / sysreset / sysreset_rk3188.c

/*
 * (C) Copyright 2015 Google, Inc
 *
 * SPDX-License-Identifier:	GPL-2.0
 */

#include <common.h>
#include <dm.h>
#include <errno.h>
#include <syscon.h>
#include <sysreset.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/cru_rk3188.h>
#include <asm/arch/grf_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();
	struct rk3188_grf *grf;

	if (IS_ERR(cru))
		return PTR_ERR(cru);
	switch (type) {
	case SYSRESET_WARM:
		grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
		if (IS_ERR(grf))
			return -EPROTONOSUPPORT;

		/*
		 * warm-reset keeps the remap value,
		 * so make sure it's disabled.
		 */
		rk_clrsetreg(&grf->soc_con0,
			NOC_REMAP_MASK << NOC_REMAP_SHIFT,
			0 << NOC_REMAP_SHIFT);

		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,
};
Commit	Line	Data
37c07c5b HS	1	/*
	2	* (C) Copyright 2015 Google, Inc
	3	*
	4	* SPDX-License-Identifier: GPL-2.0
	5	*/
	6
	7	#include <common.h>
	8	#include <dm.h>
	9	#include <errno.h>
4e5439ac	10	#include <syscon.h>
37c07c5b HS	11	#include <sysreset.h>
	12	#include <asm/io.h>
	13	#include <asm/arch/clock.h>
	14	#include <asm/arch/cru_rk3188.h>
4e5439ac	15	#include <asm/arch/grf_rk3188.h>
37c07c5b HS	16	#include <asm/arch/hardware.h>
	17	#include <linux/err.h>
	18
	19	int rk3188_sysreset_request(struct udevice *dev, enum sysreset_t type)
	20	{
	21	struct rk3188_cru *cru = rockchip_get_cru();
4e5439ac	22	struct rk3188_grf *grf;
37c07c5b HS	23
	24	if (IS_ERR(cru))
	25	return PTR_ERR(cru);
	26	switch (type) {
	27	case SYSRESET_WARM:
4e5439ac HS	28	grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
	29	if (IS_ERR(grf))
	30	return -EPROTONOSUPPORT;
	31
	32	/*
	33	* warm-reset keeps the remap value,
	34	* so make sure it's disabled.
	35	*/
	36	rk_clrsetreg(&grf->soc_con0,
	37	NOC_REMAP_MASK << NOC_REMAP_SHIFT,
	38	0 << NOC_REMAP_SHIFT);
	39
37c07c5b HS	40	rk_clrreg(&cru->cru_mode_con, 0xffff);
	41	writel(0xeca8, &cru->cru_glb_srst_snd_value);
	42	break;
	43	case SYSRESET_COLD:
	44	rk_clrreg(&cru->cru_mode_con, 0xffff);
	45	writel(0xfdb9, &cru->cru_glb_srst_fst_value);
	46	break;
	47	default:
	48	return -EPROTONOSUPPORT;
	49	}
	50
	51	return -EINPROGRESS;
	52	}
	53
	54	static struct sysreset_ops rk3188_sysreset = {
	55	.request = rk3188_sysreset_request,
	56	};
	57
	58	U_BOOT_DRIVER(sysreset_rk3188) = {
	59	.name = "rk3188_sysreset",
	60	.id = UCLASS_SYSRESET,
	61	.ops = &rk3188_sysreset,
	62	};