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Date:   Thu, 10 Nov 2022 14:10:30 +0100
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Subject: Re: [PATCH v28 01/11] dt-bindings: arm: mediatek: mmsys: add vdosys1
 compatible for MT8195
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        <Jason-JH.Lin@mediatek.com>,
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References: <20221107072243.15748-1-nancy.lin@mediatek.com>
 <20221107072243.15748-2-nancy.lin@mediatek.com>
 <c6297a1c-e282-4a18-f16c-fa2df08b440a@gmail.com>
 <f6d7eaa0b7e2a3ed6567692616ebc1304500806c.camel@mediatek.com>
From:   Matthias Brugger <matthias.bgg@gmail.com>
In-Reply-To: <f6d7eaa0b7e2a3ed6567692616ebc1304500806c.camel@mediatek.com>
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On 09/11/2022 06:10, Jason-JH Lin (林睿祥) wrote:
> On Tue, 2022-11-08 at 18:46 +0100, Matthias Brugger wrote:
>> 
>> On 07/11/2022 08:22, Nancy.Lin wrote:
>> > Add vdosys1 mmsys compatible for MT8195 platform.
>> > 
>> > For MT8195, VDOSYS0 and VDOSYS1 are 2 display HW pipelines binding
>> > to
>> > 2 different power domains, different clock drivers and different
>> > mediatek-drm drivers.
>> > 
>> > Signed-off-by: Nancy.Lin <nancy.lin@mediatek.com>
>> > Reviewed-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
>> > ---
>> >   .../devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml      | 4
>> > +++-
>> >   1 file changed, 3 insertions(+), 1 deletion(-)
>> > 
>> > diff --git
>> > a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yam
>> > l
>> > b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yam
>> > l
>> > index 0711f1834fbd..aaabe2196185 100644
>> > ---
>> > a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yam
>> > l
>> > +++
>> > b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yam
>> > l
>> > @@ -48,7 +48,9 @@ properties:
>> >             - const: syscon
>> >   
>> >         - items:
>> > -          - const: mediatek,mt8195-vdosys0
>> > +          - enum:
>> > +              - mediatek,mt8195-vdosys0
>> > +              - mediatek,mt8195-vdosys1
>> >             - const: mediatek,mt8195-mmsys
>> >             - const: syscon
>> >   
>> 
>> I think we had that several times already:
>> 
> https://lore.kernel.org/all/6bbe9527-ae48-30e0-fb45-519223a744d7@linaro.org/
>> 
>> We will something like this, but please check that this does not give
>> any 
>> errors/warnings:
>> 
>> diff --git
>> a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml 
>> b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml
>> index eb451bec23d3d..8e9c4f4d7c389 100644
>> ---
>> a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml
>> +++
>> b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml
>> @@ -32,13 +32,22 @@ properties:
>>                 - mediatek,mt8183-mmsys
>>                 - mediatek,mt8186-mmsys
>>                 - mediatek,mt8192-mmsys
>> -              - mediatek,mt8195-mmsys
>>                 - mediatek,mt8365-mmsys
>>             - const: syscon
>>         - items:
>>             - const: mediatek,mt7623-mmsys
>>             - const: mediatek,mt2701-mmsys
>>             - const: syscon
>> +      - items:
>> +          - const: mediatek,mt8195-vdosys0
>> +          - const: syscon
>> +      - items:
>> +          - const: mediatek,mt8195-vdosys1
>> +          - const: syscon
>> +      - items:
>> +          - const: mediatek,mt8195-mmsys
>> +          - const: syscon
>> +      deprecated: true
>> 
>>     reg:
>>       maxItems: 1
> 
> Hi Matthias,
> 
> As the vdosys0 previous reviewed patch:
> 
> https://patchwork.kernel.org/project/linux-mediatek/patch/20220927152704.12018-2-jason-jh.lin@mediatek.com/
> Should I modify the vdosys0 items format like your example?
> 
> Or should vdosys1 add items format like vdosys0's previous patch?
>      - items:
>          - const: mediatek,mt8195-vdosys1
>          - const: mediatek,mt8195-mmsys
>          - const: syscon
> 

No, vdosys1 must not have mediatek,mt8195-mmsys fallback.

Regards,
Matthias

> Regards,
> Jason-JH.Lin
> 
> 
> 
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