Re: [PATCH 5/5] arm64: dts: renesas: spider-cpu: Enable watchdog timer

[Guenter Roeck <linux@roeck-us.net>]

On Tue, Jan 18, 2022 at 06:09:05PM +0100, Geert Uytterhoeven wrote:
> Enable the watchdog timer on the Spider board.
> 
> Extracted from a larger patch in the BSP by LUU HOAI.
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

Acked-by: Guenter Roeck <linux@roeck-us.net>

> ---
> For the watchdog to be able to actually reboot the system, this depends
> on proper configuration of the Watchdog Timer Reset Control Register
> (WDTRSTCR) in the Reset (RST) module, either by Linux[1], or by the
> firmware.
> 
> [1] "[PATCH LOCAL v2] soc: renesas: rcar-rst: Allow WDT reset on R-Car
>      Gen4"
>     https://lore.kernel.org/r/39005cf749a99afc6d3ba96ff155fd2a231418a8.1642524743.git.geert+renesas@glider.be
> ---
>  arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi b/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi
> index 156586532c844c41..3a90932fe85c8243 100644
> --- a/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi
> @@ -31,6 +31,11 @@ &extalr_clk {
>  	clock-frequency = <32768>;
>  };
>  
> +&rwdt {
> +	timeout-sec = <60>;
> +	status = "okay";
> +};
> +
>  &scif3 {
>  	status = "okay";
>  };