linux-kernel - Re: [PATCH 5/5] arm64: dts: mediatek: mt8188: Add support for Mali GPU on Panfrost

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Date: Tue, 28 May 2024 12:36:19 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Julien Panis <jpanis@...libre.com>, linux-mediatek@...ts.infradead.org
Cc: lee@...nel.org, robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
 matthias.bgg@...il.com, mandyjh.liu@...iatek.com,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, kernel@...labora.com
Subject: Re: [PATCH 5/5] arm64: dts: mediatek: mt8188: Add support for Mali
 GPU on Panfrost

Il 27/05/24 16:53, Julien Panis ha scritto:
> On 5/27/24 11:39, AngeloGioacchino Del Regno wrote:
>> Add the necessary OPP table for the GPU and also add a GPU node
>> to enable support for the Valhall-JM G57 MC3 found on this SoC,
>> using the Panfrost driver.
>>
>> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
>> ---
> 
> [...]
> 
>> +        gpu: gpu@...00000 {
>> +            compatible = "mediatek,mt8188-mali", "arm,mali-valhall-jm";
>> +            reg = <0 0x13000000 0 0x4000>;
>> +
>> +            clocks = <&mfgcfg CLK_MFGCFG_BG3D>;
>> +            interrupts = <GIC_SPI 383 IRQ_TYPE_LEVEL_HIGH 0>,
>> +                     <GIC_SPI 382 IRQ_TYPE_LEVEL_HIGH 0>,
>> +                     <GIC_SPI 381 IRQ_TYPE_LEVEL_HIGH 0>;
>> +            interrupt-names = "job", "mmu", "gpu";
>> +            operating-points-v2 = <&gpu_opp_table>;
>> +            power-domains = <&spm MT8188_POWER_DOMAIN_MFG2>,
>> +                    <&spm MT8188_POWER_DOMAIN_MFG3>,
>> +                    <&spm MT8188_POWER_DOMAIN_MFG4>;
>> +            power-domain-names = "core0", "core1", "core2";
> 
> Hi Angelo,
> 
> I think you should add something like that here:
> #cooling-cells = <2>;
> (the warning is raised when I run 'make dtbs_check')
> 
> Julien
> 

I can either add it to a v2 of this series, or you can add it in your patch where
you're actually adding the thermal support.

I have no preferences about who adds it, and I agree that cooling-cells should
eventually get there, so I'll leave the choice to you :-)

Cheers,
Angelo