linux-kernel - Re: [PATCH 2/3] dt-bindings: watchdog: sunxi: Add compatible for D1

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Message-ID: <20210729042449.GA1716994@roeck-us.net>
Date:   Wed, 28 Jul 2021 21:24:49 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Samuel Holland <samuel@...lland.org>
Cc:     Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Rob Herring <robh+dt@...nel.org>,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-sunxi@...ts.linux.dev, linux-watchdog@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] dt-bindings: watchdog: sunxi: Add compatible for D1

On Sun, Jul 25, 2021 at 10:51:42PM -0500, Samuel Holland wrote:
> D1 keeps the same register layout and clock sources as the R329, but it
> adds a key field which must be set to update the watchdog's "CFG" and
> "MODE" registers. Therefore it is not backward-compatible.
> 
> Signed-off-by: Samuel Holland <samuel@...lland.org>
> ---
>  .../devicetree/bindings/watchdog/allwinner,sun4i-a10-wdt.yaml   | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/watchdog/allwinner,sun4i-a10-wdt.yaml b/Documentation/devicetree/bindings/watchdog/allwinner,sun4i-a10-wdt.yaml
> index 853ceb1b7c0f..756e6ab99860 100644
> --- a/Documentation/devicetree/bindings/watchdog/allwinner,sun4i-a10-wdt.yaml
> +++ b/Documentation/devicetree/bindings/watchdog/allwinner,sun4i-a10-wdt.yaml
> @@ -29,6 +29,7 @@ properties:
>        - items:
>            - const: allwinner,suniv-f1c100s-wdt
>            - const: allwinner,sun4i-a10-wdt
> +      - const: allwinner,sun20i-d1-wdt

Alignment is off.

Guenter

>  
>    reg:
>      maxItems: 1
> @@ -59,6 +60,7 @@ if:
>      compatible:
>        contains:
>          enum:
> +          - allwinner,sun20i-d1-wdt
>            - allwinner,sun50i-r329-wdt
>  
>  then: