linux-kernel - Re: [PATCH 3/5] arm64: dts: mt8192: Add display nodes

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Message-ID: <20220630134210.7j665amh6tbeaecv@notapiano>
Date:   Thu, 30 Jun 2022 09:42:10 -0400
From:   Nícolas F. R. A. Prado 
        <nfraprado@...labora.com>
To:     "allen-kh.cheng" <allen-kh.cheng@...iatek.com>
Cc:     Matthias Brugger <matthias.bgg@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Project_Global_Chrome_Upstream_Group@...iatek.com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        Chen-Yu Tsai <wenst@...omium.org>
Subject: Re: [PATCH 3/5] arm64: dts: mt8192: Add display nodes

On Thu, Jun 30, 2022 at 05:41:31PM +0800, allen-kh.cheng wrote:
> Hi Nícolas, 
> 
> On Wed, 2022-06-29 at 19:24 -0400, Nícolas F. R. A. Prado wrote:
> > On Wed, Jun 29, 2022 at 08:13:56PM +0800, Allen-KH Cheng wrote:
> > > Add display nodes and gce info for mt8192 SoC.
> > > 
> > > GCE (Global Command Engine) properties to the display nodes in
> > > order to
> > > enable the usage of the CMDQ (Command Queue), which is required for
> > > operating the display.
> > > 
> > > Signed-off-by: Allen-KH Cheng <allen-kh.cheng@...iatek.com>
> > > Reviewed-by: AngeloGioacchino Del Regno <
> > > angelogioacchino.delregno@...labora.com>
> > > ---
> > >  arch/arm64/boot/dts/mediatek/mt8192.dtsi | 136
> > > +++++++++++++++++++++++
> > >  1 file changed, 136 insertions(+)
> > > 
> > > diff --git a/arch/arm64/boot/dts/mediatek/mt8192.dtsi
> > > b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
> > > index a07edc82d403..26d01544b4ea 100644
> > > --- a/arch/arm64/boot/dts/mediatek/mt8192.dtsi
> > > +++ b/arch/arm64/boot/dts/mediatek/mt8192.dtsi
[..]
> > > +		rdma0: rdma@...07000 {
> > > +			compatible = "mediatek,mt8192-disp-rdma";
> > 
> > dtbs_check is complaining that there isn't a "mediatek,mt8183-disp-
> > rdma"
> > fallback compatible here. But given that the rdma driver matches
> > directly to the
> > mt8192 compatible, I think the node here is fine, and the binding is
> > the one
> > that should be updated.
> > 
> 
> I have checked the binding and driver again.
> 
> I prefer use "mediatek,mt8186-disp-rdma" as fallback and remove mt8192
> compatible and data in mtk_disp_rdma.c because they are the same with
> mt8183.
> 
> Do you think it is okay?

Sure, that sounds good to me as well.

Thanks,
Nícolas