[v3,1/2] dt-bindings: watchdog: mtk-wdt: add disable_wdt_extrst support

[Guenter Roeck]

On Tue, Sep 14, 2021 at 08:34:53PM +0800, Fengquan Chen wrote:
> This patch add a description and example of disable_wdt_extrst
> element for watchdog on MTK Socs
> 
> Signed-off-by: Fengquan Chen <fengquan.chen at mediatek.com>
> Acked-by: Rob Herring <robh at kernel.org>

Reviewed-by: Guenter Roeck <linux at roeck-us.net>

> ---
>  Documentation/devicetree/bindings/watchdog/mtk-wdt.txt | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt b/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt
> index a4e31ce96e0e..0114871f887a 100644
> --- a/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt
> +++ b/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt
> @@ -22,6 +22,7 @@ Required properties:
>  - reg : Specifies base physical address and size of the registers.
>  
>  Optional properties:
> +- mediatek,disable-extrst: disable send output reset signal
>  - interrupts: Watchdog pre-timeout (bark) interrupt.
>  - timeout-sec: contains the watchdog timeout in seconds.
>  - #reset-cells: Should be 1.
> @@ -31,6 +32,7 @@ Example:
>  watchdog: watchdog at 10007000 {
>  	compatible = "mediatek,mt8183-wdt",
>  		     "mediatek,mt6589-wdt";
> +	mediatek,disable-extrst;
>  	reg = <0 0x10007000 0 0x100>;
>  	interrupts = <GIC_SPI 139 IRQ_TYPE_NONE>;
>  	timeout-sec = <10>;