[J-u-boot.git] / drivers / power / mt6323.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2019 Frank Wunderlich <[email protected]>
 */

#include <common.h>
#include <command.h>
#include <asm/io.h>
#include <linux/delay.h>

#define PWRAP_BASE		0x1000d000
#define PWRAP_WACS2_CMD		0x9c

#define PWRAP_CALC(adr, wdata) ((1 << 31) | (((adr) >> 1) << 16) | (wdata))

#define MT6323_PWRC_BASE	0x8000
#define RTC_BBPU		0x0000
#define RTC_BBPU_KEY		(0x43 << 8)
#define RTC_WRTGR		0x003c

int do_poweroff(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
	u32 addr, val;

	addr = PWRAP_BASE + PWRAP_WACS2_CMD;
	val = PWRAP_CALC(MT6323_PWRC_BASE + RTC_BBPU, RTC_BBPU_KEY);
	writel(val, addr);

	mdelay(10);

	val = PWRAP_CALC(MT6323_PWRC_BASE + RTC_WRTGR, 1);
	writel(val, addr);

	// wait some time and then print error
	mdelay(10000);
	printf("Failed to power off!!!\n");
	return 1;
}
Commit	Line	Data
36b8b5d3 FW	1	// SPDX-License-Identifier: GPL-2.0+
	2	/*
	3	* Copyright (C) 2019 Frank Wunderlich <[email protected]>
	4	*/
	5
	6	#include <common.h>
	7	#include <command.h>
	8	#include <asm/io.h>
c05ed00a	9	#include <linux/delay.h>
36b8b5d3 FW	10
	11	#define PWRAP_BASE 0x1000d000
	12	#define PWRAP_WACS2_CMD 0x9c
	13
	14	#define PWRAP_CALC(adr, wdata) ((1 << 31) \| (((adr) >> 1) << 16) \| (wdata))
	15
	16	#define MT6323_PWRC_BASE 0x8000
	17	#define RTC_BBPU 0x0000
	18	#define RTC_BBPU_KEY (0x43 << 8)
	19	#define RTC_WRTGR 0x003c
	20
09140113	21	int do_poweroff(struct cmd_tbl cmdtp, int flag, int argc, char const argv[])
36b8b5d3 FW	22	{
	23	u32 addr, val;
	24
	25	addr = PWRAP_BASE + PWRAP_WACS2_CMD;
	26	val = PWRAP_CALC(MT6323_PWRC_BASE + RTC_BBPU, RTC_BBPU_KEY);
	27	writel(val, addr);
	28
	29	mdelay(10);
	30
	31	val = PWRAP_CALC(MT6323_PWRC_BASE + RTC_WRTGR, 1);
	32	writel(val, addr);
	33
	34	// wait some time and then print error
	35	mdelay(10000);
	36	printf("Failed to power off!!!\n");
	37	return 1;
	38	}