u-boot/drivers/power/mt6323.c
Frank Wunderlich 36b8b5d3ad poweroff: add poweroff for mt6323 pmic
this adds poweroff to bananapi r2 / mt7623 / mt6323 pmic

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
2020-01-10 10:25:13 -05:00

37 lines
837 B
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2019 Frank Wunderlich <frank-w@public-files.de>
*/
#include <common.h>
#include <command.h>
#include <asm/io.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(cmd_tbl_t *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;
}