linux-kernel - Re: [PATCH v2 7/7] arm64: dts: qcom: qcs8300-ride: add anx7625 DSI to DP bridge node

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Message-ID: <vj3pwikzgbflzwqwkbvdfac44llinsmrhrqnvu6gx756xz4h3e@2lspa6zx5xgr>
Date: Mon, 6 Oct 2025 13:16:46 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Ayushi Makhija <quic_amakhija@...cinc.com>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, robdclark@...il.com, sean@...rly.run,
        marijn.suijten@...ainline.org, andersson@...nel.org, robh@...nel.org,
        robh+dt@...nel.org, krzk+dt@...nel.org, konradybcio@...nel.org,
        conor+dt@...nel.org, andrzej.hajda@...el.com,
        neil.armstrong@...aro.org, rfoss@...nel.org,
        Laurent.pinchart@...asonboard.com, jonathan@...ek.ca, jonas@...boo.se,
        jernej.skrabec@...il.com, quic_rajeevny@...cinc.com,
        quic_vproddut@...cinc.com
Subject: Re: [PATCH v2 7/7] arm64: dts: qcom: qcs8300-ride: add anx7625 DSI
 to DP bridge node

On Mon, Oct 06, 2025 at 07:09:24AM +0530, Ayushi Makhija wrote:
> Add anx7625 DSI to DP bridge device node.
> 
> Signed-off-by: Ayushi Makhija <quic_amakhija@...cinc.com>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
> ---
>  arch/arm64/boot/dts/qcom/qcs8300-ride.dts | 170 ++++++++++++++++++++++
>  1 file changed, 170 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qcs8300-ride.dts b/arch/arm64/boot/dts/qcom/qcs8300-ride.dts
> index 891e49602c97..5d4040376857 100644
> --- a/arch/arm64/boot/dts/qcom/qcs8300-ride.dts
> +++ b/arch/arm64/boot/dts/qcom/qcs8300-ride.dts
> @@ -24,6 +24,64 @@ chosen {
>  		stdout-path = "serial0:115200n8";
>  	};
>  
> +	vreg_12p0: vreg-12p0-regulator {

Why are these nodes not in a correct place? Also, why are they named
differently from all other regulators in this board file?

> +		compatible = "regulator-fixed";
> +		regulator-name = "VREG_12P0";
> +
> +		regulator-always-on;
> +		regulator-boot-on;
> +		regulator-min-microvolt = <12000000>;
> +		regulator-max-microvolt = <12000000>;
> +	};
> +
> +	vreg_5p0: vreg-5p0-regulator {
> +		compatible = "regulator-fixed";
> +		regulator-name = "VREG_5P0";
> +
> +		regulator-always-on;
> +		regulator-boot-on;
> +		regulator-min-microvolt = <5000000>;
> +		regulator-max-microvolt = <5000000>;
> +
> +		vin-supply = <&vreg_12p0>;
> +	};
> +
> +	vreg_1p8: vreg-1p8-regulator {
> +		compatible = "regulator-fixed";
> +		regulator-name = "VREG_1P8";
> +
> +		regulator-always-on;
> +		regulator-boot-on;
> +		regulator-min-microvolt = <1800000>;
> +		regulator-max-microvolt = <1800000>;
> +
> +		vin-supply = <&vreg_5p0>;
> +	};
> +
> +	vreg_1p0: vreg-1p0-regulator {
> +		compatible = "regulator-fixed";
> +		regulator-name = "VREG_1P0";
> +
> +		regulator-always-on;
> +		regulator-boot-on;
> +		regulator-min-microvolt = <1000000>;
> +		regulator-max-microvolt = <1000000>;
> +
> +		vin-supply = <&vreg_1p8>;
> +	};
> +
> +	vreg_3p0: vreg-3p0-regulator {
> +		compatible = "regulator-fixed";
> +		regulator-name = "VREG_3P0";
> +
> +		regulator-always-on;
> +		regulator-boot-on;
> +		regulator-min-microvolt = <3000000>;
> +		regulator-max-microvolt = <3000000>;
> +
> +		vin-supply = <&vreg_12p0>;
> +	};
> +
>  	dp0-connector {
>  		compatible = "dp-connector";
>  		label = "DP0";
> @@ -36,6 +94,18 @@ dp0_connector_in: endpoint {
>  		};
>  	};
>  
> +	dp-dsi0-connector {
> +		compatible = "dp-connector";
> +		label = "DSI0";
> +		type = "full-size";
> +
> +		port {
> +			dp_dsi0_connector_in: endpoint {
> +				remote-endpoint = <&dsi2dp_bridge_out>;
> +			};
> +		};
> +	};
> +
>  	regulator-usb2-vbus {
>  		compatible = "regulator-fixed";
>  		regulator-name = "USB2_VBUS";
> @@ -316,6 +386,70 @@ &gpu_zap_shader {
>  	firmware-name = "qcom/qcs8300/a623_zap.mbn";
>  };
>  
> +&i2c8 {
> +	clock-frequency = <400000>;
> +	status = "okay";
> +
> +	io_expander: gpio@74 {
> +		compatible = "ti,tca9539";
> +		reg = <0x74>;
> +		interrupts-extended = <&tlmm 93 IRQ_TYPE_EDGE_BOTH>;
> +		gpio-controller;
> +		#gpio-cells = <2>;
> +		interrupt-controller;
> +		#interrupt-cells = <2>;
> +		reset-gpios = <&tlmm 66 GPIO_ACTIVE_LOW>;
> +
> +		pinctrl-0 = <&io_expander_intr_active>,
> +			    <&io_expander_reset_active>;
> +		pinctrl-names = "default";
> +	};
> +
> +	i2c-mux@70 {
> +		compatible = "nxp,pca9543";
> +		#address-cells = <1>;
> +
> +		#size-cells = <0>;
> +		reg = <0x70>;

compatible
reg

#address-cells
#size-cells


> +

-- 
With best wishes
Dmitry