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>

diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index cb2c6fe3ebe4bf2ac31ad7a40f15840023606f92..5910926faca4e31d0c9050727338505dd3d6448d 100644 (file)
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -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

diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index dd5bc0dc44e9d0217c09b9e684fc8154b1ebaf62..2dcc7bb99d023d30082100c221911bffff9c9cb6 100644 (file)
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -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

diff --git a/drivers/power/mt6323.c b/drivers/power/mt6323.c
new file mode 100644 (file)
index 0000000..566be5f
--- /dev/null
+++ b/drivers/power/mt6323.c
@@ -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;
+}