linux-kernel - Re: [PATCH 2/2] arm64: dts: qcom: purwa: Drop the Hamoa workaround for PDC

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Message-ID: <0786c6da-5ada-46a7-9c78-276b5e13c9e4@oss.qualcomm.com>
Date: Fri, 2 Jan 2026 09:28:04 +0530
From: "Maulik Shah (mkshah)" <maulik.shah@....qualcomm.com>
To: Krzysztof Kozlowski <krzk@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
        Konrad Dybcio <konradybcio@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH 2/2] arm64: dts: qcom: purwa: Drop the Hamoa workaround
 for PDC



On 12/31/2025 4:17 PM, Krzysztof Kozlowski wrote:
> On 31/12/2025 11:18, Maulik Shah wrote:
>> Purwa shares the Hamoa (X1E80100) PDC device, but the hardware register
>> bug addressed in commit e9a48ea4d90b ("irqchip/qcom-pdc: Workaround
>> hardware register bug on X1E80100") is already fixed in Purwa silicon.
>>
>> Hamoa compatible forces the software workaround. Use the Purwa specific
> 
> There is no Hamoa compatible, there is no such name in upstream (except
> dtsi), so don't use that name at all. Neither here nor in commit msg.
> 
> 
Okay. I will not use hamoa/purwa, will use X1E80100/X1P42100 everywhere in v2.

>> compatible string for the PDC node to remove the workaround from Purwa.
>>
>> Fixes: f08edb529916 ("arm64: dts: qcom: Add X1P42100 SoC and CRD")
> 
> Explain the bug being fixed here.

I will add explanation of bug in v2.

Thanks,
Maulik