arm64: dts: imx8mn: Add display DT overlays for the ifm VHIP4 EvalBoard

PATCH Superseded Marek Vasut 2 participants 2 messages Sep 8

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2026-09-08 21:54 UTC #0 lore raw

PATCH 1/1 arm64: dts: imx8mn: Add display DT overlays for the ifm VHIP4 EvalBoard

From: Fedor Ross <[email protected]>

Add display DT overlays for the ifm VHIP4 EvalBoard v1. This includes two expansion modules, one populated with Displaytech DT050BTFT-PTS panel, and the NXP ADV7533 DSI-to-HDMI adapter. The Displaytech DT050BTFT-PTS is configured in three different DSI lane counts to allow testing all possible DSI lane count configurations of the VHIP4 EvalBoard.

Signed-off-by Fedor Ross <[email protected]>

Co-developed-by Marek Vasut <[email protected]>

Signed-off-by Marek Vasut <[email protected]>

---
Cc: Conor Dooley <[email protected]>
Cc: Fabio Estevam <[email protected]>
Cc: Frank Li <[email protected]>
Cc: Krzysztof Kozlowski <[email protected]>
Cc: Pengutronix Kernel Team <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Sascha Hauer <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]

---
 arch/arm64/boot/dts/freescale/Makefile        |  16 ++
 ...-evalboard-v1-overlay-dt050btft-1lane.dtso |  16 ++
 ...-evalboard-v1-overlay-dt050btft-2lane.dtso |  16 ++
 ...-evalboard-v1-overlay-dt050btft-4lane.dtso |  16 ++
 ...evalboard-v1-overlay-dt050btft-common.dtsi | 155 ++++++++++++++++++
 ...evalboard-v1-overlay-nxp-adv7533-hdmi.dtso | 104 ++++++++++++
 6 files changed, 323 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1-overlay-dt050btft-1lane.dtso
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1-overlay-dt050btft-2lane.dtso
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1-overlay-dt050btft-4lane.dtso
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1-overlay-dt050btft-common.dtsi
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1-overlay-nxp-adv7533-hdmi.dtso

arch/arm64/boot/dts/freescale/Makefile +16 -0

index 984642146dd91..1cbf7205d577c 100644
@@ -319,6 +319,12 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mn-var-som-symphony.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mn-var-som-symphony-legacy.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mn-venice-gw7902.dtb
 
+imx8mn-vhip4-evalboard-v1-overlay-dt050btft-1lane-dtbs := imx8mn-vhip4-evalboard-v1.dtb \
+							  imx8mn-vhip4-evalboard-v1-overlay-dt050btft-1lane.dtbo
+imx8mn-vhip4-evalboard-v1-overlay-dt050btft-2lane-dtbs := imx8mn-vhip4-evalboard-v1.dtb \
+							  imx8mn-vhip4-evalboard-v1-overlay-dt050btft-2lane.dtbo
+imx8mn-vhip4-evalboard-v1-overlay-dt050btft-4lane-dtbs := imx8mn-vhip4-evalboard-v1.dtb \
+							  imx8mn-vhip4-evalboard-v1-overlay-dt050btft-4lane.dtbo
 imx8mn-vhip4-evalboard-v1-overlay-eeprom-1000-dtbs := imx8mn-vhip4-evalboard-v1.dtb \
 						      imx8mn-vhip4-overlay-eeprom-1000.dtbo
 imx8mn-vhip4-evalboard-v1-overlay-eeprom-1100-dtbs := imx8mn-vhip4-evalboard-v1.dtb \

@@ -327,6 +333,8 @@ imx8mn-vhip4-evalboard-v1-overlay-ksz8794-dtbs := imx8mn-vhip4-evalboard-v1.dtb
 						  imx8mn-vhip4-evalboard-v1-overlay-ksz8794.dtbo
 imx8mn-vhip4-evalboard-v1-overlay-ksz9031-dtbs := imx8mn-vhip4-evalboard-v1.dtb \
 						  imx8mn-vhip4-evalboard-v1-overlay-ksz9031.dtbo
+imx8mn-vhip4-evalboard-v1-overlay-nxp-adv7533-hdmi-dtbs := imx8mn-vhip4-evalboard-v1.dtb \
+							   imx8mn-vhip4-evalboard-v1-overlay-nxp-adv7533-hdmi.dtbo
 imx8mn-vhip4-evalboard-v2-overlay-adin1300-dtbs := imx8mn-vhip4-evalboard-v2.dtb \
 						   imx8mn-vhip4-evalboard-v2-overlay-adin1300.dtbo
 imx8mn-vhip4-evalboard-v2-overlay-eeprom-1100-dtbs := imx8mn-vhip4-evalboard-v2.dtb \

@@ -336,12 +344,20 @@ imx8mn-vhip4-evalboard-v2-overlay-eeprom-2000-dtbs := imx8mn-vhip4-evalboard-v2.
 imx8mn-vhip4-evalboard-v2-overlay-ksz8794-dtbs := imx8mn-vhip4-evalboard-v2.dtb \
 						  imx8mn-vhip4-evalboard-v2-overlay-ksz8794.dtbo
 dtb-$(CONFIG_ARCH_MXC) += imx8mn-vhip4-evalboard-v1.dtb \
+			  imx8mn-vhip4-evalboard-v1-overlay-dt050btft-1lane.dtb \
+			  imx8mn-vhip4-evalboard-v1-overlay-dt050btft-1lane.dtbo \
+			  imx8mn-vhip4-evalboard-v1-overlay-dt050btft-2lane.dtb \
+			  imx8mn-vhip4-evalboard-v1-overlay-dt050btft-2lane.dtbo \
+			  imx8mn-vhip4-evalboard-v1-overlay-dt050btft-4lane.dtb \
+			  imx8mn-vhip4-evalboard-v1-overlay-dt050btft-4lane.dtbo \
 			  imx8mn-vhip4-evalboard-v1-overlay-eeprom-1000.dtb \
 			  imx8mn-vhip4-evalboard-v1-overlay-eeprom-1100.dtb \
 			  imx8mn-vhip4-evalboard-v1-overlay-ksz8794.dtb \
 			  imx8mn-vhip4-evalboard-v1-overlay-ksz8794.dtbo \
 			  imx8mn-vhip4-evalboard-v1-overlay-ksz9031.dtb \
 			  imx8mn-vhip4-evalboard-v1-overlay-ksz9031.dtbo \
+			  imx8mn-vhip4-evalboard-v1-overlay-nxp-adv7533-hdmi.dtb \
+			  imx8mn-vhip4-evalboard-v1-overlay-nxp-adv7533-hdmi.dtbo \
 			  imx8mn-vhip4-evalboard-v2.dtb \
 			  imx8mn-vhip4-evalboard-v2-overlay-adin1300.dtb \
 			  imx8mn-vhip4-evalboard-v2-overlay-adin1300.dtbo \

arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1-overlay-dt050btft-1lane.dtso new file +16 -0

new file mode 100644
index 0000000000000..4151765743265
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2021-2026 Marek Vasut
+ */
+/dts-v1/;
+/plugin/;
+
+#include "imx8mn-vhip4-evalboard-v1-overlay-dt050btft-common.dtsi"
+
+&sn65dsi83_in {
+	data-lanes = <1>;
+};
+
+&mipi_dsi_bridge1_out {
+	data-lanes = <1>;
+};

arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1-overlay-dt050btft-2lane.dtso new file +16 -0

new file mode 100644
index 0000000000000..7b1bd925f53f6
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2021-2026 Marek Vasut
+ */
+/dts-v1/;
+/plugin/;
+
+#include "imx8mn-vhip4-evalboard-v1-overlay-dt050btft-common.dtsi"
+
+&sn65dsi83_in {
+	data-lanes = <1 2>;
+};
+
+&mipi_dsi_bridge1_out {
+	data-lanes = <1 2>;
+};

arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1-overlay-dt050btft-4lane.dtso new file +16 -0

new file mode 100644
index 0000000000000..300d5e9536102
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2021-2026 Marek Vasut
+ */
+/dts-v1/;
+/plugin/;
+
+#include "imx8mn-vhip4-evalboard-v1-overlay-dt050btft-common.dtsi"
+
+&sn65dsi83_in {
+	data-lanes = <1 2 3 4>;
+};
+
+&mipi_dsi_bridge1_out {
+	data-lanes = <1 2 3 4>;
+};

arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1-overlay-dt050btft-common.dtsi new file +155 -0

155 lines not on this page · raw message

arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1-overlay-nxp-adv7533-hdmi.dtso new file +104 -0

104 lines not on this page · raw message

Signature · 1 line

2.53.0

[email protected]

AI review

2026-09-08 22:06 UTC #1 lore raw

Thank you for your contribution! Sashiko AI review found 2 potential issue(s) to consider: - [Medium] The 1.8V regulator `reg_adv_1v8` is incorrectly configured to output 3.3V, violating hardware…

Thank you for your contribution! Sashiko AI review found 2 potential issue(s) to consider:
- [Medium] The 1.8V regulator reg_adv_1v8 is incorrectly configured to output 3.3V, violating hardware requirements for the ADV7535.
- [Medium] The hdmi-transmitter@3d node (ADV7535) is missing clocks and clock-names properties to link the defined cec_clock, breaking CEC support. --

commit fdacb0c2eecf5c57dea7a716eb4e6d3417011685
Author: Fedor Ross <[email protected]>

arm64: dts: imx8mn: Add display DT overlays for the ifm VHIP4 EvalBoard

This commit adds display DT overlays for the ifm VHIP4 EvalBoard v1, adding support for the Displaytech DT050BTFT-PTS panel and the NXP ADV7533 DSI-to-HDMI adapter. It supports different DSI lane counts to allow testing multiple configurations.

Quoted 5 lines

arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1-overlay-nxp-adv7533-hdmi.dtso new file +0 -0
new file mode 100644
index 0000000000000..e1a7aa6806c48

[ ... ]

arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1-overlay-nxp-adv7533-hdmi.dtso line 31

Quoted 5 lines

arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1-overlay-nxp-adv7533-hdmi.dtso new file +5 -0
+	reg_adv_1v8: regulator-adv-1v8 {
+		compatible = "regulator-fixed";
+		regulator-always-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;

                                           ^^^^^^^

[Severity: Medium]
Is the voltage configuration correct here? The reg_adv_1v8 node appears to represent a 1.8V power supply used by the ADV7535, but its voltage limits are set to 3.3V. This misinforms the regulator core about the hardware voltage.

Quoted 2 lines

arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1-overlay-nxp-adv7533-hdmi.dtso new file +2 -0
+		regulator-name = "ADV-1V8";
+	};

[ ... ]

arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1-overlay-nxp-adv7533-hdmi.dtso line 54

Quoted 11 lines

+&i2c3 {

arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1-overlay-nxp-adv7533-hdmi.dtso new file +10 -0

+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	hdmi-transmitter@3d {
+		compatible = "adi,adv7535";
+		reg = <0x3d>, <0x3e>, <0x3c>, <0x3f>;
+		reg-names = "main", "edid", "cec", "packet";
+		a2vdd-supply = <&reg_adv_1v8>;
+		adi,dsi-lanes = <4>;

                 ^^^^^^^^^^^^^^^^^^^

[Severity: Medium]
Is there a missing clock reference for the CEC block? A cec_clock is defined earlier in the file but is not linked here.

Without clocks and clock-names properties linking to cec_clock, the DRM bridge core will fail to find it when calling devm_clk_get(dev, "cec"), which returns -ENOENT. This causes adv7511_cec_init() to abort, leaving CEC uninitialized.

Quoted 5 lines

arch/arm64/boot/dts/freescale/imx8mn-vhip4-evalboard-v1-overlay-nxp-adv7533-hdmi.dtso new file +5 -0
+		avdd-supply = <&reg_adv_1v8>;
+		dvdd-supply = <&reg_adv_1v8>;
+		pvdd-supply = <&reg_adv_1v8>;
+		v3p3-supply = <&reg_adv_3v3>;
+		status = "okay";

Signature · 1 line

Sashiko AI review · https://sashiko.dev/#/patchset/[email protected]?part=1