Linux ARM-MSM sub-architecture
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From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Vikram Sharma <quic_vikramsa@quicinc.com>,
	bryan.odonoghue@linaro.org, mchehab@kernel.org, robh@kernel.org,
	krzk+dt@kernel.org, conor+dt@kernel.org, andersson@kernel.org,
	konradybcio@kernel.org, hverkuil-cisco@xs4all.nl,
	cros-qcom-dts-watchers@chromium.org, catalin.marinas@arm.com,
	will@kernel.org
Cc: linux-arm-kernel@lists.infradead.org, quic_svankada@quicinc.com,
	linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	quic_nihalkum@quicinc.com,
	Ravi Shankar <quic_rshankar@quicinc.com>,
	Vishal Verma <quic_vishverm@quicinc.com>,
	Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Subject: Re: [PATCH v5 3/3] arm64: dts: qcom: monaco-evk-camera: Add DT overlay
Date: Fri, 14 Nov 2025 23:19:35 +0100	[thread overview]
Message-ID: <a5ae933d-c5d1-4094-b4a1-de52060e0786@oss.qualcomm.com> (raw)
In-Reply-To: <20251114064541.446276-4-quic_vikramsa@quicinc.com>

On 11/14/25 7:45 AM, Vikram Sharma wrote:
> From: Nihal Kumar Gupta <quic_nihalkum@quicinc.com>
> 
> 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.

[...]

> +&{/} {
> +	vreg_cam1_2p8: vreg-cam1-2p8 {

Where does this regulator lie physically? Is its presence dependent
on the connection of the sensor, is it part of the EVK carrier board,
or perhaps something else?

> +		compatible = "regulator-fixed";
> +		regulator-name = "vreg_cam1_2p8";
> +		startup-delay-us = <10000>;
> +		enable-active-high;
> +		gpio = <&tlmm 74 GPIO_ACTIVE_HIGH>;
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&cam1_avdd_2v8_en_default>;

property-n
property-names

please

[...]

> +&tlmm {
> +	/*
> +	 * gpio67, gpio68, gpio69 provide MCLK0, MCLK1, MCLK2 for
> +	 * CAM0, CAM1 and CAM2 respectively via the "cam_mclk" function.
> +	 * So, here it's MCLK1 pin for instance.
> +	 */

I don't really see the value in these comments..

Vladimir requested you to move the 'description' (meaning the node
describing the hardware, not a comment explaining the function of the
DT hunk in natural language) to monaco.dtsi too

Konrad

  reply	other threads:[~2025-11-14 22:19 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-14  6:45 [PATCH v5 0/3] Add CCI and imx577 sensor support for monaco evk Vikram Sharma
2025-11-14  6:45 ` [PATCH v5 1/3] dt-bindings: i2c: qcom-cci: Document qcs8300 compatible Vikram Sharma
2025-11-14  6:45 ` [PATCH v5 2/3] arm64: dts: qcom: qcs8300: Add CCI definitions Vikram Sharma
2025-11-14 22:16   ` Konrad Dybcio
2025-11-14  6:45 ` [PATCH v5 3/3] arm64: dts: qcom: monaco-evk-camera: Add DT overlay Vikram Sharma
2025-11-14 22:19   ` Konrad Dybcio [this message]
2025-11-15  5:53     ` Nihal Kumar Gupta
2025-11-17 12:37       ` Konrad Dybcio

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