linux-kernel - [PATCH 4/4] arm64: dts: imx8mp: Add hdmi parallel audio interface node

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Message-Id: <20250718101150.3681002-5-shengjiu.wang@nxp.com>
Date: Fri, 18 Jul 2025 18:11:50 +0800
From: Shengjiu Wang <shengjiu.wang@....com>
To: andrzej.hajda@...el.com,
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Subject: [PATCH 4/4] arm64: dts: imx8mp: Add hdmi parallel audio interface node

The HDMI TX Parallel Audio Interface (HTX_PAI) is a digital module that
acts as the bridge between the Audio Subsystem to the HDMI TX Controller.

Correct the register map of hdmi_pvi, which is overlapped with the
hdmi_pai device.

Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
---
 arch/arm64/boot/dts/freescale/imx8mp-evk.dts |  4 +++
 arch/arm64/boot/dts/freescale/imx8mp.dtsi    | 26 +++++++++++++++++++-
 2 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
index c0cc5611048e..cc9351a5bd65 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
@@ -442,6 +442,10 @@ &flexcan2 {
 	status = "disabled";/* can2 pin conflict with pdm */
 };
 
+&hdmi_pai {
+	status = "okay";
+};
+
 &hdmi_pvi {
 	status = "okay";
 };
diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
index bb24dba7338e..6e5a41f46309 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
@@ -2063,7 +2063,7 @@ irqsteer_hdmi: interrupt-controller@...c2000 {
 
 			hdmi_pvi: display-bridge@...c4000 {
 				compatible = "fsl,imx8mp-hdmi-pvi";
-				reg = <0x32fc4000 0x1000>;
+				reg = <0x32fc4000 0x800>;
 				interrupt-parent = <&irqsteer_hdmi>;
 				interrupts = <12>;
 				power-domains = <&hdmi_blk_ctrl IMX8MP_HDMIBLK_PD_PVI>;
@@ -2089,6 +2089,22 @@ pvi_to_hdmi_tx: endpoint {
 				};
 			};
 
+			hdmi_pai: hdmi@...c4800 {
+				compatible = "fsl,imx8mp-hdmi-pai";
+				reg = <0x32fc4800 0x800>;
+				interrupt-parent = <&irqsteer_hdmi>;
+				interrupts = <14>;
+				power-domains = <&hdmi_blk_ctrl IMX8MP_HDMIBLK_PD_PAI>;
+				status = "disabled";
+
+				port {
+
+					pai_to_hdmi_tx: endpoint {
+						remote-endpoint = <&hdmi_tx_from_pai>;
+					};
+				};
+			};
+
 			lcdif3: display-controller@...c6000 {
 				compatible = "fsl,imx8mp-lcdif";
 				reg = <0x32fc6000 0x1000>;
@@ -2140,6 +2156,14 @@ port@1 {
 						reg = <1>;
 						/* Point endpoint to the HDMI connector */
 					};
+
+					port@2 {
+						reg = <2>;
+
+						hdmi_tx_from_pai: endpoint {
+							remote-endpoint = <&pai_to_hdmi_tx>;
+						};
+					};
 				};
 			};
 
-- 
2.34.1