arm64: dts: imx8mm-evk: Add HDMI support

Started by Fabio Estevam on May 30, 2023 · 4 messages from 2 authors · Last reply May 30, 2023

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  1. [PATCH 1/2] arm64: dts: imx8mm-evk: Add HDMI support
    Related patches
  2. [PATCH 2/2] arm64: defconfig: Enable the TI SN65DSI83 driver
    Related patches
Message details and related content
From: Fabio Estevam <redacted>

imx8mm-evk has a MIPI DSI port that can be used with a ADV7535 MIPI
DSI to HDMI bridge.

Add support for it.

Signed-off-by: Fabio Estevam <redacted>
---
 arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi | 65 +++++++++++++++++++
 1 file changed, 65 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
index 3f9dfd4d3884..63a6cc509ca6 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
@@ -19,6 +19,18 @@ memory@40000000 {
 		reg = <0x0 0x40000000 0 0x80000000>;
 	};
 
+	hdmi-connector {
+		compatible = "hdmi-connector";
+		label = "hdmi";
+		type = "a";
+
+		port {
+			hdmi_connector_in: endpoint {
+				remote-endpoint = <&adv7533_out>;
+			};
+		};
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -303,6 +315,39 @@ &i2c2 {
 	pinctrl-0 = <&pinctrl_i2c2>;
 	status = "okay";
 
+	hdmi@3d {
+		compatible = "adi,adv7535";
+		reg = <0x3d>, <0x3c>, <0x3e>, <0x3f>;
+		reg-names = "main", "cec", "edid", "packet";
+		adi,dsi-lanes = <4>;
+
+		adi,input-depth = <8>;
+		adi,input-colorspace = "rgb";
+		adi,input-clock = "1x";
+		adi,input-style = <1>;
+		adi,input-justification = "evenly";
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+				adv7533_in: endpoint {
+					remote-endpoint = <&dsi_out>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+				adv7533_out: endpoint {
+					remote-endpoint = <&hdmi_connector_in>;
+				};
+			};
+
+		};
+	};
+
 	ptn5110: tcpc@50 {
 		compatible = "nxp,ptn5110";
 		pinctrl-names = "default";
@@ -348,6 +393,26 @@ pca6416: gpio@20 {
 	};
 };
 
+&lcdif {
+	status = "okay";
+};
+
+&mipi_dsi {
+	samsung,esc-clock-frequency = <10000000>;
+	status = "okay";
+
+	ports {
+		port@1 {
+			reg = <1>;
+
+			dsi_out: endpoint {
+				remote-endpoint = <&adv7533_in>;
+				data-lanes = <1 2 3 4>;
+			};
+		};
+	};
+};
+
 &pcie_phy {
 	fsl,refclk-pad-mode = <IMX8_PCIE_REFCLK_PAD_INPUT>;
 	fsl,tx-deemph-gen1 = <0x2d>;
-- 
2.34.1


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[PATCH 2/2] arm64: defconfig: Enable the TI SN65DSI83 driver

Message details and related content
From: Fabio Estevam <redacted>

There are some imx8mm-based boards that contain a SN65DSI83 MIPI
DSI to HDMI bridge chip.

Add support for it so that HDMI output can be functional by default.

Signed-off-by: Fabio Estevam <redacted>
---
 arch/arm64/configs/defconfig | 1 +
 1 file changed, 1 insertion(+)
diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 53fb665078db..479556b3d6be 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -819,6 +819,7 @@ CONFIG_DRM_SII902X=m
 CONFIG_DRM_SIMPLE_BRIDGE=m
 CONFIG_DRM_THINE_THC63LVD1024=m
 CONFIG_DRM_TI_TFP410=m
+CONFIG_DRM_TI_SN65DSI83=m
 CONFIG_DRM_TI_SN65DSI86=m
 CONFIG_DRM_ANALOGIX_ANX7625=m
 CONFIG_DRM_I2C_ADV7511=m
-- 
2.34.1


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Re: [PATCH 2/2] arm64: defconfig: Enable the TI SN65DSI83 driver

Message details and related content
On 30.05.23 14:56, Fabio Estevam wrote:
From: Fabio Estevam <redacted>

There are some imx8mm-based boards that contain a SN65DSI83 MIPI
DSI to HDMI bridge chip.

Add support for it so that HDMI output can be functional by default.
I think you mixed something up here. The SN65DSI83 is a DSI->LVDS bridge
and has nothing to do with HDMI, right?
quoted hunk
Signed-off-by: Fabio Estevam <redacted>
---
 arch/arm64/configs/defconfig | 1 +
 1 file changed, 1 insertion(+)
diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 53fb665078db..479556b3d6be 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -819,6 +819,7 @@ CONFIG_DRM_SII902X=m
 CONFIG_DRM_SIMPLE_BRIDGE=m
 CONFIG_DRM_THINE_THC63LVD1024=m
 CONFIG_DRM_TI_TFP410=m
+CONFIG_DRM_TI_SN65DSI83=m
 CONFIG_DRM_TI_SN65DSI86=m
 CONFIG_DRM_ANALOGIX_ANX7625=m
 CONFIG_DRM_I2C_ADV7511=m
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Re: [PATCH 2/2] arm64: defconfig: Enable the TI SN65DSI83 driver

Message details and related content
On Tue, May 30, 2023 at 10:06 AM Frieder Schrempf
[off-list ref] wrote:
I think you mixed something up here. The SN65DSI83 is a DSI->LVDS bridge
and has nothing to do with HDMI, right?
Yes, I mixed it with the adv7535 that I was using on the imx8mm-evk.

I will rework the commit log, thanks.

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