mt6323.c
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// 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;
}