linux-kernel - Re: [PATCH v3 01/10] arm64: dts: mt8183: Fix Mali GPU clock

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Date:   Fri, 16 Dec 2022 11:46:12 +0100
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     Nícolas F. R. A. Prado 
        <nfraprado@...labora.com>
Cc:     mturquette@...libre.com, sboyd@...nel.org, wenst@...omium.org,
        miles.chen@...iatek.com, rex-bc.chen@...iatek.com,
        chun-jie.chen@...iatek.com, jose.exposito89@...il.com,
        drinkcat@...omium.org, weiyi.lu@...iatek.com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org,
        angelogioacchino.delregno@...labora.com
Subject: Re: [PATCH v3 01/10] arm64: dts: mt8183: Fix Mali GPU clock



On 06/12/2022 19:30, Nícolas F. R. A. Prado wrote:
> On Tue, Sep 27, 2022 at 12:11:19PM +0200, AngeloGioacchino Del Regno wrote:
>> From: Chen-Yu Tsai <wenst@...omium.org>
>>
>> The actual clock feeding into the Mali GPU on the MT8183 is from the
>> clock gate in the MFGCFG block, not CLK_TOP_MFGPLL_CK from the TOPCKGEN
>> block, which itself is simply a pass-through placeholder for the MFGPLL
>> in the APMIXEDSYS block.
>>
>> Fix the hardware description with the correct clock reference.
>>
>> Fixes: a8168cebf1bc ("arm64: dts: mt8183: Add node for the Mali GPU")
>> Signed-off-by: Chen-Yu Tsai <wenst@...omium.org>
>> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
>> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> 
> Hi,
> 
> it seems that while all other patches on this series were applied by Chen-Yu
> through the clk tree, this commit never made it to the mediatek tree.
> 
> As a result, MT8183-based machines (or at least mt8183-kukui-jacuzzi, where I
> tested on) currently hang during boot not only on next, but also on mainline,
> v6.1-rc8. With this commit applied I've confirmed that the machine boots fine
> again.
> 
> Matthias, could you please apply this commit and make sure it makes its way to
> v6.1? Given the Fixes tag it should eventually make its way there anyway, but if
> still possible would be good to have it fixed right from v6.1.
> 
> Tested-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>

Applied now.

Sorry for the late reply.
Matthias

> 
> Thanks,
> Nícolas
> 
>> ---
>>   arch/arm64/boot/dts/mediatek/mt8183.dtsi | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
>> index a70b669c49ba..402136bfd535 100644
>> --- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
>> +++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
>> @@ -1678,7 +1678,7 @@ gpu: gpu@...40000 {
>>   				<GIC_SPI 278 IRQ_TYPE_LEVEL_LOW>;
>>   			interrupt-names = "job", "mmu", "gpu";
>>   
>> -			clocks = <&topckgen CLK_TOP_MFGPLL_CK>;
>> +			clocks = <&mfgcfg CLK_MFG_BG3D>;
>>   
>>   			power-domains =
>>   				<&spm MT8183_POWER_DOMAIN_MFG_CORE0>,
>> -- 
>> 2.37.2
>>
>>
>>