Hi Pavel,
On Tue, 2014-09-09 at 14:03 +0200, ZY - pavel wrote:
> This adds watchdog disable. It is neccessary for running Linux kernel.
>
> Signed-off-by: Pavel Machek <pa...@denx.de>
>
> diff --git a/arch/arm/cpu/armv7/socfpga/reset_manager.c
> b/arch/arm/cpu/armv7/socfpga/reset_manager.c
> index e320c01..5503059 100644
> --- a/arch/arm/cpu/armv7/socfpga/reset_manager.c
> +++ b/arch/arm/cpu/armv7/socfpga/reset_manager.c
> @@ -14,6 +14,19 @@ DECLARE_GLOBAL_DATA_PTR;
> static const struct socfpga_reset_manager *reset_manager_base =
> (void *)SOCFPGA_RSTMGR_ADDRESS;
>
> +#define RSTMGR_PERMODRST_L4WD0_LSB 6
Would suggest to put this into header file.
Thanks
Chin Liang
> +
> +/* Disable the watchdog (toggle reset to watchdog) */
> +void watchdog_disable(void)
> +{
> + /* assert reset for watchdog */
> + setbits_le32(&reset_manager_base->per_mod_reset,
> + (1<<RSTMGR_PERMODRST_L4WD0_LSB));
> + /* deassert watchdog from reset (watchdog in not running state) */
> + clrbits_le32(&reset_manager_base->per_mod_reset,
> + (1<<RSTMGR_PERMODRST_L4WD0_LSB));
> +}
> +
> /*
> * Write the reset manager register to cause reset
> */
> diff --git a/arch/arm/include/asm/arch-socfpga/reset_manager.h
> b/arch/arm/include/asm/arch-socfpga/reset_manager.h
> index 3e95476..eb95c5b 100644
> --- a/arch/arm/include/asm/arch-socfpga/reset_manager.h
> +++ b/arch/arm/include/asm/arch-socfpga/reset_manager.h
> @@ -10,6 +10,8 @@
> void reset_cpu(ulong addr);
> void reset_deassert_peripherals_handoff(void);
>
> +void watchdog_disable(void);
> +
> struct socfpga_reset_manager {
> u32 status;
> u32 ctrl;
>
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