linux-kernel - Re: [PATCH v7 5/5] arm64: dts: qcom: monaco-evk-camera: Add DT overlay

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Message-ID: <9964bf4b-a6ed-4429-8c70-520cd19781e9@oss.qualcomm.com>
Date: Thu, 18 Dec 2025 14:39:34 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>,
        Nihal Kumar Gupta <quic_nihalkum@...cinc.com>,
        bryan.odonoghue@...aro.org, mchehab@...nel.org, robh@...nel.org,
        krzk+dt@...nel.org, conor+dt@...nel.org, andersson@...nel.org,
        konradybcio@...nel.org, hverkuil-cisco@...all.nl,
        cros-qcom-dts-watchers@...omium.org, catalin.marinas@....com,
        will@...nel.org
Cc: linux-arm-kernel@...ts.infradead.org, quic_svankada@...cinc.com,
        linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Ravi Shankar <quic_rshankar@...cinc.com>,
        Vishal Verma <quic_vishverm@...cinc.com>
Subject: Re: [PATCH v7 5/5] arm64: dts: qcom: monaco-evk-camera: Add DT
 overlay

On 12/16/25 8:35 AM, Vladimir Zapolskiy wrote:
> On 12/16/25 08:22, Nihal Kumar Gupta wrote:
>> Monaco EVK board does not include a camera sensor in its default hardware
>> configuration. Introducing a device tree overlay to support optional
>> integration of the IMX577 sensor via CSIPHY1.
>>
>> Camera reset is handled through an I2C expander, and power is enabled
>> via TLMM GPIO74.
>>
>> An example media-ctl pipeline for the imx577 is:

[...]

> If only one of 3 defined from 4/5 regulators is used, do you really wish
> to describle all 3 in advance? You may consider to remove 2 currently unused
> GPIO controlled regulator descriptions, and squash this change with 4/5.

This is useful, if only to surely park them when unused.

Konrad