[U-Boot] [PATCH 3/9] mpc85xx: watchdog initialisation added

[Scott Wood]

On Tue, 2014-06-03 at 09:05 +0200, Rainer Boschung wrote:
> Function to inititialize the cpu watchdog added.
> 
> Signed-off-by: Rainer Boschung <rainer.boschung at keymile.com>
> ---
>  arch/powerpc/cpu/mpc85xx/cpu.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/arch/powerpc/cpu/mpc85xx/cpu.c b/arch/powerpc/cpu/mpc85xx/cpu.c
> index 684d400..6274f92 100644
> --- a/arch/powerpc/cpu/mpc85xx/cpu.c
> +++ b/arch/powerpc/cpu/mpc85xx/cpu.c
> @@ -310,6 +310,14 @@ __weak unsigned long get_tbclk (void)
>  
> 
>  #if defined(CONFIG_WATCHDOG)
> +#define WATCHDOG_MASK (TCR_WP(63) | TCR_WRC(3) | TCR_WIE)
> +void
> +init_85xx_watchdog(void)
> +{
> +	mtspr(SPRN_TCR, (mfspr(SPRN_TCR) & ~WATCHDOG_MASK) |
> +	      TCR_WP(CONFIG_WATCHDOG_PRESC) | TCR_WRC(CONFIG_WATCHDOG_RC));
> +}

These config symbols require documentation, and defaults to avoid
breaking the build of existing mpc85xx boards that enable
CONFIG_WATCHDOG (even if you add this later in the patchset, you're
breaking bisectability).

-Scott