linux-kernel - Re: [PATCH v2 4/4] arm64: dts: qcom: Add base HAMOA-IOT-EVK board

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Message-ID: <3f03b1c0-94a2-4081-adb0-aac4f42ee430@kernel.org>
Date: Fri, 25 Jul 2025 11:18:44 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Yijie Yang <yijie.yang@....qualcomm.com>,
 Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 4/4] arm64: dts: qcom: Add base HAMOA-IOT-EVK board

On 25/07/2025 11:01, Yijie Yang wrote:
> 
> wcn7850_pmu: wcn7850-pmu@...x {
>      compatible = "qcom,wcn7850-pmu";
>      reg = <0x...>;
>      vdd-supply = <&dummy_reg>;
>      vddaon-supply = <&dummy_reg>;
>      vdddig-supply = <&dummy_reg>;
>      vddrfa1p2-supply = <&dummy_reg>;
>      vddrfa1p8-supply = <&dummy_reg>;
> };
> This approach ensures the DTB passes schema checks while keeping the 
> implementation clean and consistent with the actual platform setup. Do 
> you think this is appropriate?

No. There is no dummy regulator in the hardware, so you cannot add it to
the DTS.

Best regards,
Krzysztof