linux-kernel - Re: [PATCH v2] arm64: dts: qcom: qcs6490-rb3gen2: enable hdmi bridge

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Message-ID: <55ee8e86-e2eb-4c69-9692-df790454b8d6@quicinc.com>
Date: Mon, 6 May 2024 12:54:29 -0700
From: Abhinav Kumar <quic_abhinavk@...cinc.com>
To: Prahlad Valluru <quic_vvalluru@...cinc.com>, <robh@...nel.org>
CC: <andersson@...nel.org>, <conor+dt@...nel.org>,
        <devicetree@...r.kernel.org>, <konrad.dybcio@...aro.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <quic_nankam@...cinc.com>
Subject: Re: [PATCH v2] arm64: dts: qcom: qcs6490-rb3gen2: enable hdmi bridge



On 4/26/2024 7:24 AM, Prahlad Valluru wrote:
> From: Venkata Prahlad Valluru <quic_vvalluru@...cinc.com>
> 
> Enable lt9611uxc bridge for qcs6490 rb3 gen2 platform.
> 
> Signed-off-by: Prahlad Valluru <quic_vvalluru@...cinc.com>
> ---

Why is there a mismatch between your author name and signed off name?

> v2: Addressed dtschema errors
> 	- Fixed lt9611-irq
> 	- vdd-supply error to be ignored, as it is connected to
> 	  input supply directly, on rb3gen2
> ---
>   arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 86 ++++++++++++++++++++
>   1 file changed, 86 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> index a085ff5b5fb2..c14d4a4bb3ce 100644
> --- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> +++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> @@ -51,6 +51,18 @@
>   			};
>   		};
>   	};
> +	
> +	hdmi-connector {
> +		compatible = "hdmi-connector";
> +		label = "HDMI";

Is label mandatory? Doesn't seem so?

Rest LGTM.

> +		type = "a";
> +
> +		port {
> +			hdmi_con: endpoint {
> +				remote-endpoint = <&lt9611_out>;
> +			};
> +		};
> +	};
>   
>   	reserved-memory {
>   		xbl_mem: xbl@...00000 {
> @@ -530,6 +542,45 @@
>   			   <GCC_WPSS_RSCP_CLK>;
>   };
>   
> +&i2c0 {
> +	clock-frequency = <400000>;
> +	status = "okay";
> +
> +	lt9611_codec: hdmi-bridge@2b {
> +		compatible = "lontium,lt9611uxc";
> +		reg = <0x2b>;
> +
> +		interrupts-extended = <&tlmm 24 IRQ_TYPE_EDGE_FALLING>;
> +		reset-gpios = <&pm7250b_gpios 2 GPIO_ACTIVE_HIGH>;
> +
> +		vcc-supply = <&vreg_l11c_2p8>;
> +
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&lt9611_irq_pin &lt9611_rst_pin>;
> +
> +		ports {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +
> +			port@0 {
> +				reg = <0>;
> +
> +				lt9611_a: endpoint {
> +					remote-endpoint = <&mdss_dsi0_out>;
> +				};
> +			};
> +
> +			port@2 {
> +				reg = <2>;
> +
> +				lt9611_out: endpoint {
> +					remote-endpoint = <&hdmi_con>;
> +				};
> +			};
> +		};
> +	};
> +};
> +
>   &i2c1 {
>   	status = "okay";
>   
> @@ -602,6 +653,21 @@
>   	status = "okay";
>   };
>   
> +&mdss_dsi {
> +        vdda-supply = <&vreg_l6b_1p2>;
> +        status = "okay";
> +};
> +
> +&mdss_dsi0_out {
> +        remote-endpoint = <&lt9611_a>;
> +        data-lanes = <0 1 2 3>;
> +};
> +
> +&mdss_dsi_phy {
> +        vdds-supply = <&vreg_l10c_0p88>;
> +        status = "okay";
> +};
> +
>   &qupv3_id_0 {
>   	status = "okay";
>   };
> @@ -711,3 +777,23 @@
>   	function = "gpio";
>   	bias-disable;
>   };
> +
> +&pm7250b_gpios {
> +        lt9611_rst_pin: lt9611-rst-state {
> +                pins = "gpio2";
> +                function = "normal";
> +
> +                output-high;
> +                input-disable;
> +                power-source = <0>;
> +        };
> +};
> +
> +&tlmm {
> +        lt9611_irq_pin: lt9611-irq-state {
> +                pins = "gpio24";
> +                function = "gpio";
> +                drive-strength = <8>;
> +                bias-disable;
> +        };
> +};