linux-kernel - Re: [PATCH v1 06/17] dt-bindings: mediatek: set the hdmi to be compatible with syscon

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Message-ID: <5071cc60-313e-bd01-228f-f0a0f2ce99a8@collabora.com>
Date:   Tue, 20 Sep 2022 12:19:52 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Guillaume Ranquet <granquet@...libre.com>,
        Vinod Koul <vkoul@...nel.org>, Stephen Boyd <sboyd@...nel.org>,
        David Airlie <airlied@...ux.ie>,
        Rob Herring <robh+dt@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Daniel Vetter <daniel@...ll.ch>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        CK Hu <ck.hu@...iatek.com>, Jitao shi <jitao.shi@...iatek.com>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Matthias Brugger <matthias.bgg@...il.com>
Cc:     linux-mediatek@...ts.infradead.org,
        dri-devel@...ts.freedesktop.org,
        Pablo Sun <pablo.sun@...iatek.com>, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Mattijs Korpershoek <mkorpershoek@...libre.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-phy@...ts.infradead.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v1 06/17] dt-bindings: mediatek: set the hdmi to be
 compatible with syscon

Il 19/09/22 18:56, Guillaume Ranquet ha scritto:
> In order to share register with a dedicated ddc driver, set the hdmi
> compatible to syscon.
> 
> Signed-off-by: Guillaume Ranquet <granquet@...libre.com>
> 
> diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.yaml
> index abb231a0694b..86297b7eb7f7 100644
> --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.yaml
> +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,hdmi.yaml
> @@ -16,12 +16,14 @@ description: |
>   
>   properties:
>     compatible:
> -    enum:
> -      - mediatek,mt2701-hdmi
> -      - mediatek,mt7623-hdmi
> -      - mediatek,mt8167-hdmi
> -      - mediatek,mt8173-hdmi
> -      - mediatek,mt8195-hdmi
> +    items:
> +      - enum:
> +          - mediatek,mt2701-hdmi
> +          - mediatek,mt7623-hdmi
> +          - mediatek,mt8167-hdmi
> +          - mediatek,mt8173-hdmi
> +      - const: syscon
> +

This is an ABI breakage, you can't do that.

Regards,
Angelo