linux-kernel - Re: [PATCH v2 4/5] dt-bindings: hwlock: sun6i: Add a64 compatible string

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Date:   Thu, 16 Feb 2023 09:38:40 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Bastian Germann <bage@...ian.org>,
        Wilken Gottwalt <wilken.gottwalt@...teo.net>
Cc:     Ohad Ben-Cohen <ohad@...ery.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Baolin Wang <baolin.wang@...ux.alibaba.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Samuel Holland <samuel@...lland.org>,
        linux-remoteproc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v2 4/5] dt-bindings: hwlock: sun6i: Add a64 compatible
 string

On 15/02/2023 21:37, Bastian Germann wrote:
> Add an allwinner,sun50i-a64-hwspinlock compatible string to the device
> tree binding. The A31 and A64 have compatible hwspinlocks.
> 
> Signed-off-by: Bastian Germann <bage@...ian.org>
> ---
>  .../bindings/hwlock/allwinner,sun6i-a31-hwspinlock.yaml       | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/hwlock/allwinner,sun6i-a31-hwspinlock.yaml b/Documentation/devicetree/bindings/hwlock/allwinner,sun6i-a31-hwspinlock.yaml
> index 6cdfe22deb3c..281c285282a1 100644
> --- a/Documentation/devicetree/bindings/hwlock/allwinner,sun6i-a31-hwspinlock.yaml
> +++ b/Documentation/devicetree/bindings/hwlock/allwinner,sun6i-a31-hwspinlock.yaml
> @@ -15,7 +15,9 @@ description:
>  
>  properties:
>    compatible:
> -    const: allwinner,sun6i-a31-hwspinlock
> +    items:
> +      - const: allwinner,sun6i-a31-hwspinlock
> +      - const: allwinner,sun50i-a64-hwspinlock

Does not look like you tested the DTS against bindings. Please run `make
dtbs_check` (see Documentation/devicetree/bindings/writing-schema.rst
for instructions).

That's my template answer. More detailed:

Please test that your DTS changes always pass your binding changes. The
above looks reversed with your DTS, thus if you tested DTS, you would
see errors. Expecting that existing in-kernel DTS passes dtbs_check is a
bit too much (although Samsung Exynos is almost there!), but at least
new code could not introduce new errors.

Best regards,
Krzysztof