linux-kernel - [PATCH v6 3/3] arm64: dts: imx93: Add parallel display output nodes

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Message-Id: <20251201-v6-18-topic-imx93-parallel-display-v6-3-7b056e1e5b1e@pengutronix.de>
Date: Mon, 01 Dec 2025 18:15:22 +0100
From: Marco Felsch <m.felsch@...gutronix.de>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Peng Fan <peng.fan@....com>, 
 Liu Ying <victor.liu@....com>, Andrzej Hajda <andrzej.hajda@...el.com>, 
 Neil Armstrong <neil.armstrong@...aro.org>, Robert Foss <rfoss@...nel.org>, 
 Laurent Pinchart <Laurent.pinchart@...asonboard.com>, 
 Jonas Karlman <jonas@...boo.se>, Jernej Skrabec <jernej.skrabec@...il.com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>
Cc: devicetree@...r.kernel.org, imx@...ts.linux.dev, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 dri-devel@...ts.freedesktop.org, Marco Felsch <m.felsch@...gutronix.de>
Subject: [PATCH v6 3/3] arm64: dts: imx93: Add parallel display output
 nodes

Add required OF nodes to support the i.MX93 parallel output (DPI) path.

On the i.MX93 a single LCDIF is connected to three bridges: DPI, LVDS
LDB and the MIPI-DSI whereas the i.MX91 support only the DPI bridge.

Map endpoint@0 as DPI bridge output since the i.MX93 TRM (Figure 485.
MEDIAMIX block diagram) doesn't mention any port-number <-> bridge
combination.

Set the MEDIA-AXI and MEDIA-APB clocks to the overdrive (OD) values
since the i.MX93 and i.MX91 use the overdrive (OD) clk settings per
default.

Signed-off-by: Marco Felsch <m.felsch@...gutronix.de>
---
 arch/arm64/boot/dts/freescale/imx91_93_common.dtsi | 57 ++++++++++++++++++++++
 arch/arm64/boot/dts/freescale/imx93.dtsi           | 12 +++++
 2 files changed, 69 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx91_93_common.dtsi b/arch/arm64/boot/dts/freescale/imx91_93_common.dtsi
index 52da571f26c4e8a2703e4476b5541fa7aca52f10..6dc01a76c68425bb65576712bfd98950d662bd38 100644
--- a/arch/arm64/boot/dts/freescale/imx91_93_common.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx91_93_common.dtsi
@@ -1122,8 +1122,65 @@ media_blk_ctrl: system-controller@...10000 {
 				 <&clk IMX93_CLK_MIPI_DSI_GATE>;
 			clock-names = "apb", "axi", "nic", "disp", "cam",
 				      "pxp", "lcdif", "isi", "csi", "dsi";
+			assigned-clocks = <&clk IMX93_CLK_MEDIA_AXI>,
+					  <&clk IMX93_CLK_MEDIA_APB>,
+					  <&clk IMX93_CLK_MEDIA_DISP_PIX>;
+			assigned-clock-parents = <&clk IMX93_CLK_SYS_PLL_PFD1>,
+						 <&clk IMX93_CLK_SYS_PLL_PFD1_DIV2>,
+						 <&clk IMX93_CLK_VIDEO_PLL>;
+			assigned-clock-rates = <400000000>, <133333333>;
 			#power-domain-cells = <1>;
+			#address-cells = <1>;
+			#size-cells = <1>;
 			status = "disabled";
+
+			dpi_bridge: bridge@60 {
+				compatible = "nxp,imx93-pdfc";
+				reg = <0x60 0x4>;
+				status = "disabled";
+
+				ports {
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					port@0 {
+						reg = <0>;
+
+						dpi_from_lcdif: endpoint {
+							remote-endpoint = <&lcdif_to_dpi>;
+						};
+					};
+
+					port@1 {
+						reg = <1>;
+
+						dpi_to_panel: endpoint {
+						};
+					};
+				};
+			};
+		};
+
+		lcdif: display-controller@...30000 {
+			compatible = "fsl,imx93-lcdif";
+			reg = <0x4ae30000 0x23c>;
+			interrupts = <GIC_SPI 176 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&clk IMX93_CLK_MEDIA_DISP_PIX>,
+				 <&clk IMX93_CLK_LCDIF_GATE>,
+				 <&clk IMX93_CLK_MEDIA_AXI>;
+			clock-names = "pix", "axi", "disp_axi";
+			power-domains = <&media_blk_ctrl IMX93_MEDIABLK_PD_LCDIF>;
+			status = "disabled";
+
+			port {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				lcdif_to_dpi: endpoint@0 {
+					reg = <0>;
+					remote-endpoint = <&dpi_from_lcdif>;
+				};
+			};
 		};
 
 		usbotg1: usb@...00000 {
diff --git a/arch/arm64/boot/dts/freescale/imx93.dtsi b/arch/arm64/boot/dts/freescale/imx93.dtsi
index 7b27012dfcb564650882dc8c40e836e797b2fda1..5436b48b30e89eb1f939b398ce1bf105abe7e34b 100644
--- a/arch/arm64/boot/dts/freescale/imx93.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx93.dtsi
@@ -150,6 +150,18 @@ l3_cache: l3-cache {
 	};
 };
 
+&lcdif {
+	port {
+		lcdif_to_ldb: endpoint@1 {
+			reg = <1>;
+		};
+
+		lcdif_to_dsi: endpoint@2 {
+			reg = <2>;
+		};
+	};
+};
+
 &src {
 	mlmix: power-domain@...61800 {
 		compatible = "fsl,imx93-src-slice";

-- 
2.47.3