linux-kernel - Re: [PATCH v2 3/3] dts: arm64: mediatek: mt8195: Remove MT8183 compatible for OVL

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Message-ID: <980d28d6-52f0-4430-954b-da673fcd92df@collabora.com>
Date: Fri, 13 Dec 2024 11:33:04 +0100
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Pin-yen Lin <treapking@...omium.org>,
 "Jason-JH.Lin" <jason-jh.lin@...iatek.com>
Cc: Chun-Kuang Hu <chunkuang.hu@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Matthias Brugger <matthias.bgg@...il.com>,
 Singo Chang <singo.chang@...iatek.com>, Nancy Lin <nancy.lin@...iatek.com>,
 Shawn Sung <shawn.sung@...iatek.com>, 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,
 Fei Shao <fshao@...omium.org>
Subject: Re: [PATCH v2 3/3] dts: arm64: mediatek: mt8195: Remove MT8183
 compatible for OVL

Il 13/12/24 11:27, Pin-yen Lin ha scritto:
> Hi Jason,
> 
> On Fri, Dec 13, 2024 at 5:50 PM Jason-JH.Lin <jason-jh.lin@...iatek.com> wrote:
>>
>> The OVL hardware capabilities have changed starting from MT8195,
>> making the MT8183 compatible no longer applicable.
>> Therefore, it is necessary to remove the MT8183 compatible for OVL.
> 
> Similar to patch 2/3, we need a:
> 
> Fixes: b852ee68fd72 ("arm64: dts: mt8195: Add display node for vdosys0")
> 

No, we don't, for reasons that are similar to the ones that I explained in the
MT8188 commit.

Besides, this one was already featureful before this commit, so really this is
not worth backporting at all.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>

>>
>> Signed-off-by: Jason-JH.Lin <jason-jh.lin@...iatek.com>
>> ---
>>   arch/arm64/boot/dts/mediatek/mt8195.dtsi | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/arch/arm64/boot/dts/mediatek/mt8195.dtsi b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
>> index ade685ed2190..137ee8929e01 100644
>> --- a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
>> +++ b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
>> @@ -3138,7 +3138,7 @@ larb20: larb@...10000 {
>>                  };
>>
>>                  ovl0: ovl@...00000 {
>> -                       compatible = "mediatek,mt8195-disp-ovl", "mediatek,mt8183-disp-ovl";
>> +                       compatible = "mediatek,mt8195-disp-ovl";
>>                          reg = <0 0x1c000000 0 0x1000>;
>>                          interrupts = <GIC_SPI 636 IRQ_TYPE_LEVEL_HIGH 0>;
>>                          power-domains = <&spm MT8195_POWER_DOMAIN_VDOSYS0>;
>> --
>> 2.43.0
>>
> 
> Regards,
> Pin-yen