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

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Message-ID: <cdec91b1-e455-452e-a9d6-47912d0b3aaa@kernel.org>
Date: Wed, 31 Dec 2025 11:47:28 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Maulik Shah <maulik.shah@....qualcomm.com>,
 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 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.


> 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.

Best regards,
Krzysztof