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poweroff: add poweroff for mt6323 pmic

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this adds poweroff to bananapi r2 / mt7623 / mt6323 pmic

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
This commit is contained in:
Frank Wunderlich 2019-11-22 15:32:24 +01:00 committed by Tom Rini
parent 0b326fc296
commit 36b8b5d3ad
3 changed files with 45 additions and 0 deletions
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7
drivers/power/Kconfig
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@ -366,4 +366,11 @@ config TWL4030_POWER
The TWL4030 in a combination audio CODEC/power management with
GPIO and it is commonly used with the OMAP3 family of processors
config POWER_MT6323
bool "Poweroff driver for mediatek mt6323"
select CMD_POWEROFF
help
This adds poweroff driver for mt6323
this pmic is used on mt7623 / Bananapi R2
endmenu

1
drivers/power/Makefile
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@ -20,3 +20,4 @@ obj-$(CONFIG_DIALOG_POWER) += power_dialog.o
obj-$(CONFIG_POWER_FSL) += power_fsl.o
obj-$(CONFIG_POWER_I2C) += power_i2c.o
obj-$(CONFIG_POWER_SPI) += power_spi.o
obj-$(CONFIG_POWER_MT6323) += mt6323.o

37
drivers/power/mt6323.c Normal file
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@ -0,0 +1,37 @@
// 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;
}