linux-kernel - Re: [PATCH v2,1/2] dt-bindings: display: mediatek: dpi: Add compatible for MediaTek MT8186

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Message-ID: <4940e2e4ecb5f9f6857dc960ea5dbe43c551df77.camel@mediatek.com>
Date:   Wed, 6 Apr 2022 14:38:40 +0800
From:   CK Hu <ck.hu@...iatek.com>
To:     Rex-BC Chen <rex-bc.chen@...iatek.com>, <xinlei.lee@...iatek.com>,
        <chunkuang.hu@...nel.org>, <p.zabel@...gutronix.de>,
        <airlied@...ux.ie>, <daniel@...ll.ch>, <robh+dt@...nel.org>,
        <matthias.bgg@...il.com>
CC:     <dri-devel@...ts.freedesktop.org>,
        <linux-mediatek@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        <jitao.shi@...iatek.com>
Subject: Re: [PATCH v2,1/2] dt-bindings: display: mediatek: dpi: Add
 compatible for MediaTek MT8186

Hi,

On Fri, 2022-04-01 at 09:38 +0800, Rex-BC Chen wrote:
> On Thu, 2022-03-31 at 19:58 +0800, xinlei.lee@...iatek.com wrote:
> > From: Xinlei Lee <xinlei.lee@...iatek.com>
> > 
> > Add dt-binding documentation of dpi for MediaTek MT8186 SoC.
> > 
> > Signed-off-by: Xinlei Lee <xinlei.lee@...iatek.com>
> > ---
> >  .../devicetree/bindings/display/mediatek/mediatek,dpi.yaml       |
> > 1
> > +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git
> > a/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.y
> > am
> > l
> > b/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.y
> > am
> > l
> > index dd2896a40ff0..a73044c50b5f 100644
> > ---
> > a/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.y
> > am
> > l
> > +++
> > b/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.y
> > am
> > l
> > @@ -22,6 +22,7 @@ properties:
> >        - mediatek,mt7623-dpi
> >        - mediatek,mt8173-dpi
> >        - mediatek,mt8183-dpi
> > +      - mediatek,mt8186-dpi
> >        - mediatek,mt8192-dpi
> >  
> >    reg:
> 
> Hello Xinlei,
> 
> From the dts we use, the dpi node needs other properties for MT8186.
> Please send another patch and add these properties to binding.
> 
> assigned-clocks = <&topckgen CLK_TOP_DPI>;
> assigned-clock-parents = <&topckgen CLK_TOP_TVDPLL_D2>;

According to [1], the assigned-clocks is initial value. Without this
initial value, I think driver would set this clock again, wouldn't it?

[1] 
https://www.kernel.org/doc/Documentation/devicetree/bindings/clock/clock-bindings.txt

Regards,
CK

> 
> Thanks
> 
> BRs,
> Rex
> 
> 
> _______________________________________________
> Linux-mediatek mailing list
> Linux-mediatek@...ts.infradead.org
> 
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