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| author | Philippe Rétornaz <philippe.retornaz@epfl.ch> | 2011-09-20 10:57:43 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-09-20 14:53:00 +0200 |
| commit | 40d97b89bd3c902144a0757249d9d5d5cf314214 (patch) | |
| tree | b3ee3e1faea1225b4bcd65c2c1df1695aa46b288 /arch/arm/mach-imx | |
| parent | ARM: mach-qong: Add watchdog support (diff) | |
| download | linux-40d97b89bd3c902144a0757249d9d5d5cf314214.tar.xz linux-40d97b89bd3c902144a0757249d9d5d5cf314214.zip | |
mx31moboard: Add poweroff support
This patch add poweroff support on mx31moboard platform.
A watchdog timeout is generated while enabling the watchdog
reset IO to trigger a PMIC poweroff.
Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-imx')
| -rw-r--r-- | arch/arm/mach-imx/mach-mx31moboard.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/mach-mx31moboard.c b/arch/arm/mach-imx/mach-mx31moboard.c index b358383120e7..3c7d67b77716 100644 --- a/arch/arm/mach-imx/mach-mx31moboard.c +++ b/arch/arm/mach-imx/mach-mx31moboard.c @@ -28,6 +28,9 @@ #include <linux/spi/spi.h> #include <linux/types.h> #include <linux/memblock.h> +#include <linux/clk.h> +#include <linux/io.h> +#include <linux/err.h> #include <linux/usb/otg.h> #include <linux/usb/ulpi.h> @@ -490,6 +493,18 @@ err: } +static void mx31moboard_poweroff(void) +{ + struct clk *clk = clk_get_sys("imx2-wdt.0", NULL); + + if (!IS_ERR(clk)) + clk_enable(clk); + + mxc_iomux_mode(MX31_PIN_WATCHDOG_RST__WATCHDOG_RST); + + __raw_writew(1 << 6 | 1 << 2, MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR)); +} + static int mx31moboard_baseboard; core_param(mx31moboard_baseboard, mx31moboard_baseboard, int, 0444); @@ -528,6 +543,8 @@ static void __init mx31moboard_init(void) moboard_usbh2_init(); + pm_power_off = mx31moboard_poweroff; + switch (mx31moboard_baseboard) { case MX31NOBOARD: break; |