diff options
| author | Stefano Babic <sbabic@denx.de> | 2011-02-02 00:49:36 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2011-04-27 19:38:04 +0200 |
| commit | 2cf36ae7cf897b2a942db98e9e826539961fb55d (patch) | |
| tree | e4a85cdaa7d82e8a53cee22f47487c60b90a4169 /arch/arm/include/asm/arch-mx31 | |
| parent | c7bdcb61f3680c897e59b5ea554da363d7d21ed7 (diff) | |
| download | blackbird-obmc-uboot-2cf36ae7cf897b2a942db98e9e826539961fb55d.tar.gz blackbird-obmc-uboot-2cf36ae7cf897b2a942db98e9e826539961fb55d.zip | |
MX31: add support for MX31 watchdog
The patch add CONFIG_HW_WATCHDOG to be used
with the internal watchdog timer of the MX31
processor. Two function are exported for the
board maintainers:
mxc_hw_watchdog_enable
mxc_hw_watchdog_reset
The board maintainer can decide to use mxc_hw_watchdog_reset as
hw_watchdog_reset, or to implement his own function to reset
the watchdog.
The watchdog timer can be configured with CONFIG_SYS_WD_TIMER_SECS
(value in seconds). The MX31 allows values between 0.5
(CONFIG_SYS_WD_TIMER_SECS = 0) and 128 seconds.
Signed-off-by: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'arch/arm/include/asm/arch-mx31')
| -rw-r--r-- | arch/arm/include/asm/arch-mx31/mx31-regs.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-mx31/mx31-regs.h b/arch/arm/include/asm/arch-mx31/mx31-regs.h index 105f7d8be5..37337f2877 100644 --- a/arch/arm/include/asm/arch-mx31/mx31-regs.h +++ b/arch/arm/include/asm/arch-mx31/mx31-regs.h @@ -75,6 +75,16 @@ struct cspi_regs { u32 test; }; +/* Watchdog Timer (WDOG) registers */ +#define WDOG_ENABLE (1 << 2) +#define WDOG_WT_SHIFT 8 +struct wdog_regs { + u16 wcr; /* Control */ + u16 wsr; /* Service */ + u16 wrsr; /* Reset Status */ +}; + + #define IOMUX_PADNUM_MASK 0x1ff #define IOMUX_PIN(gpionum, padnum) ((padnum) & IOMUX_PADNUM_MASK) |
