Date:   Wed, 15 Feb 2023 20:49:06 +0000
From:   Andre Przywara <andre.przywara@arm.com>
To:     Bastian Germann <bage@debian.org>
Cc:     Wilken Gottwalt <wilken.gottwalt@posteo.net>,
        Ohad Ben-Cohen <ohad@wizery.com>,
        Bjorn Andersson <andersson@kernel.org>,
        Baolin Wang <baolin.wang@linux.alibaba.com>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Chen-Yu Tsai <wens@csie.org>,
        Samuel Holland <samuel@sholland.org>,
        linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev,
        devicetree@vger.kernel.org
Subject: Re: [PATCH v2 4/5] dt-bindings: hwlock: sun6i: Add a64 compatible
 string
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In-Reply-To: <20230215203711.6293-5-bage@debian.org>
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        <20230215203711.6293-5-bage@debian.org>
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On Wed, 15 Feb 2023 21:37:09 +0100
Bastian Germann <bage@debian.org> 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@debian.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

So this would not allow the previous single compatible string, which I
think we should preserve?
You can check out other bindings (like allwinner,sun6i-a31-spi.yaml) to
get an idea of how this could be written.

Cheers,
Andre


>  
>    reg:
>      maxItems: 1