linux-kernel - Re: [PATCH v2 5/5] dt-bindings: display: mediatek: dpi: Add mt8195 support in power domains

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Message-ID: <20240926-visible-harmonica-a7cda103ff70@spud>
Date: Thu, 26 Sep 2024 16:59:39 +0100
From: Conor Dooley <conor@...nel.org>
To: Macpaul Lin <macpaul.lin@...iatek.com>
Cc: Chun-Kuang Hu <chunkuang.hu@...nel.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Yong Wu <yong.wu@...iatek.com>,
	Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
	Robin Murphy <robin.murphy@....com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	CK Hu <ck.hu@...iatek.com>, Jitao shi <jitao.shi@...iatek.com>,
	Tinghan Shen <tinghan.shen@...iatek.com>,
	Seiya Wang <seiya.wang@...iatek.com>,
	Ben Lok <ben.lok@...iatek.com>,
	"Nancy . Lin" <nancy.lin@...iatek.com>,
	dri-devel@...ts.freedesktop.org, linux-mediatek@...ts.infradead.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	iommu@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	Alexandre Mergnat <amergnat@...libre.com>,
	Bear Wang <bear.wang@...iatek.com>,
	Pablo Sun <pablo.sun@...iatek.com>, Macpaul Lin <macpaul@...il.com>,
	Sen Chu <sen.chu@...iatek.com>,
	Chris-qj chen <chris-qj.chen@...iatek.com>,
	MediaTek Chromebook Upstream <Project_Global_Chrome_Upstream_Group@...iatek.com>,
	Chen-Yu Tsai <wenst@...omium.org>
Subject: Re: [PATCH v2 5/5] dt-bindings: display: mediatek: dpi: Add mt8195
 support in power domains

On Thu, Sep 26, 2024 at 07:14:49PM +0800, Macpaul Lin wrote:
> Add power domain binding to the mediatek DPI controller for MT8185.

This wording is confusing, no binding is being added here, you're just
allowing one property.

> The dpi node in mt8195.dtsi was triggering a dtbs_check error:
>   dp-intf@...13000: power-domains: False schema does not allow [[44, 18]]

And while it is good to have the warning, it would be better to explain
here that there are actually power domains, since the dts could be wrong
here also.

Otherwise,
Acked-by: Conor Dooley <conor.dooley@...rochip.com>

> Fixes: 5474d49b2f79 ("dt-bindings: display: mediatek: dpi: Add power domains")
> Signed-off-by: Macpaul Lin <macpaul.lin@...iatek.com>
> ---
>  .../devicetree/bindings/display/mediatek/mediatek,dpi.yaml       | 1 +
>  1 file changed, 1 insertion(+)
> 
> Changes for v2:
>  - Because of the corresponding dts fix has been reviewed with a Reviewed-by: tag.
>    [1] https://lore.kernel.org/all/20240925080515.16377-1-macpaul.lin@mediatek.com/
>    We still need this change to fix the 2 dtbs_check errors.
>    So keeps no change here.
> 
> diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml
> index 3a82aec9021c..07acc8a76bfc 100644
> --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml
> +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml
> @@ -89,6 +89,7 @@ allOf:
>                  - mediatek,mt6795-dpi
>                  - mediatek,mt8173-dpi
>                  - mediatek,mt8186-dpi
> +                - mediatek,mt8195-dp-intf
>      then:
>        properties:
>          power-domains: false
> -- 
> 2.45.2
> 

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