linux-kernel - Re: [PATCH v4 11/11] arm64: dts: qcom: sm8350-hdk: Enable lt9611uxc dsi-hdmi bridge

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Date:   Wed, 8 Mar 2023 15:51:02 -0800
From:   Jessica Zhang <quic_jesszhan@...cinc.com>
To:     Robert Foss <robert.foss@...aro.org>, <robdclark@...il.com>,
        <quic_abhinavk@...cinc.com>, <dmitry.baryshkov@...aro.org>,
        <sean@...rly.run>, <airlied@...il.com>, <daniel@...ll.ch>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...ainline.org>,
        <angelogioacchino.delregno@...ainline.org>,
        <loic.poulain@...aro.org>, <vkoul@...nel.org>, <a39.skl@...il.com>,
        <quic_khsieh@...cinc.com>, <quic_vpolimer@...cinc.com>,
        <swboyd@...omium.org>, <dianders@...omium.org>,
        <liushixin2@...wei.com>, <linux-arm-msm@...r.kernel.org>,
        <dri-devel@...ts.freedesktop.org>,
        <freedreno@...ts.freedesktop.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Jonathan Marek <jonathan@...ek.ca>,
        <vinod.koul@...aro.org>
Subject: Re: [PATCH v4 11/11] arm64: dts: qcom: sm8350-hdk: Enable lt9611uxc
 dsi-hdmi bridge



On 12/30/2022 7:35 AM, Robert Foss wrote:
> The sm8350-hdk ships with the LT9611 UXC DSI/HDMI bridge chip.
> 
> In order to toggle the board to enable the HDMI output,
> switch #7 & #8 on the rightmost multi-switch package have
> to be toggled to On.
> 
> Signed-off-by: Robert Foss <robert.foss@...aro.org>

Reviewed-by: Jessica Zhang <quic_jesszhan@...cinc.com>
Tested-by: Jessica Zhang <quic_jesszhan@...cinc.com> #SM8350 (HDK)

> ---
>   arch/arm64/boot/dts/qcom/sm8350-hdk.dts | 105 ++++++++++++++++++++++++
>   1 file changed, 105 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8350-hdk.dts b/arch/arm64/boot/dts/qcom/sm8350-hdk.dts
> index 1961f941ff83..6b21897c92dc 100644
> --- a/arch/arm64/boot/dts/qcom/sm8350-hdk.dts
> +++ b/arch/arm64/boot/dts/qcom/sm8350-hdk.dts
> @@ -20,6 +20,17 @@ chosen {
>   		stdout-path = "serial0:115200n8";
>   	};
>   
> +	hdmi-connector {
> +		compatible = "hdmi-connector";
> +		type = "a";
> +
> +		port {
> +			hdmi_con: endpoint {
> +				remote-endpoint = <&lt9611_out>;
> +			};
> +		};
> +	};
> +
>   	vph_pwr: vph-pwr-regulator {
>   		compatible = "regulator-fixed";
>   		regulator-name = "vph_pwr";
> @@ -29,6 +40,31 @@ vph_pwr: vph-pwr-regulator {
>   		regulator-always-on;
>   		regulator-boot-on;
>   	};
> +
> +	lt9611_1v2: lt9611-1v2-regulator {
> +		compatible = "regulator-fixed";
> +		regulator-name = "LT9611_1V2";
> +
> +		vin-supply = <&vph_pwr>;
> +		regulator-min-microvolt = <1200000>;
> +		regulator-max-microvolt = <1200000>;
> +		gpio = <&tlmm 49 GPIO_ACTIVE_HIGH>;
> +		enable-active-high;
> +		regulator-boot-on;
> +	};
> +
> +	lt9611_3v3: lt9611-3v3-regulator {
> +		compatible = "regulator-fixed";
> +		regulator-name = "LT9611_3V3";
> +
> +		vin-supply = <&vreg_bob>;
> +		gpio = <&tlmm 47 GPIO_ACTIVE_HIGH>;
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
> +		enable-active-high;
> +		regulator-boot-on;
> +		regulator-always-on;
> +	};
>   };
>   
>   &adsp {
> @@ -220,6 +256,15 @@ &dispcc {
>   &mdss_dsi0 {
>   	vdda-supply = <&vreg_l6b_1p2>;
>   	status = "okay";
> +
> +	ports {
> +		port@1 {
> +			endpoint {
> +				remote-endpoint = <&lt9611_a>;
> +				data-lanes = <0 1 2 3>;
> +			};
> +		};
> +	};
>   };
>   
>   &mdss_dsi0_phy  {
> @@ -231,6 +276,46 @@ &gpi_dma1 {
>   	status = "okay";
>   };
>   
> +&i2c15 {
> +	clock-frequency = <400000>;
> +	status = "okay";
> +
> +	lt9611_codec: hdmi-bridge@2b {
> +		compatible = "lontium,lt9611uxc";
> +		reg = <0x2b>;
> +
> +		interrupts-extended = <&tlmm 50 IRQ_TYPE_EDGE_FALLING>;
> +		reset-gpios = <&tlmm 48 GPIO_ACTIVE_HIGH>;
> +
> +		vdd-supply = <&lt9611_1v2>;
> +		vcc-supply = <&lt9611_3v3>;
> +
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&lt9611_state>;
> +
> +		ports {
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +
> +			port@0 {
> +				reg = <0>;
> +
> +				lt9611_a: endpoint {
> +					remote-endpoint = <&dsi0_out>;
> +				};
> +			};
> +
> +			port@2 {
> +				reg = <2>;
> +
> +				lt9611_out: endpoint {
> +					remote-endpoint = <&hdmi_con>;
> +				};
> +			};
> +		};
> +	};
> +};
> +
>   &mdss {
>   	status = "okay";
>   };
> @@ -248,6 +333,10 @@ &qupv3_id_0 {
>   	status = "okay";
>   };
>   
> +&qupv3_id_2 {
> +	status = "okay";
> +};
> +
>   &slpi {
>   	status = "okay";
>   	firmware-name = "qcom/sm8350/slpi.mbn";
> @@ -544,4 +633,20 @@ usb_hub_enabled_state: usb-hub-enabled-state {
>   		drive-strength = <2>;
>   		output-low;
>   	};
> +
> +	lt9611_state: lt9611-state {
> +		rst {
> +			pins = "gpio48";
> +			function = "normal";
> +
> +			output-high;
> +			input-disable;
> +		};
> +
> +		irq {
> +			pins = "gpio50";
> +			function = "gpio";
> +			bias-disable;
> +		};
> +	};
>   };
> -- 
> 2.34.1
>