[PATCH 6/6] arm64: dts: freescale: imx8mp-verdin: Add mezzanine OV5640 overlays

From: Ernest Van Hoecke

Date: Thu Sep 10 2026 - 11:51:28 EST

From: Ernest Van Hoecke <ernest.vanhoecke@xxxxxxxxxxx>

The Verdin iMX8M Plus exposes its second MIPI CSI-2 interface through the
Verdin iMX8M Plus Mezzanine. Add overlays for using a Toradex OV5640 camera
on this interface.

The mezzanine can route the camera control signals through two jumper
configurations. Describe each configuration as a GPIO nexus mapping so the
camera description remains independent of the physical routing.

The default positions share the native CSI_1 GPIOs and are intended for a
single camera. The alternate positions permit simultaneous native and
mezzanine cameras, but conflict with the Atmel MXT touchscreen GPIO.

The current camera set uses a 27 MHz on-board oscillator. The legacy camera
module uses 24 MHz, so provide variants for both.

Link: https://developer.toradex.com/hardware/verdin-som-family/add-ons/verdin-imx8m-plus-mezzanine/
Link: https://developer.toradex.com/hardware/accessories/cameras/csi-camera-module-5mp-ov5640-arducam
Link: https://developer.toradex.com/hardware/legacy-products/other/csi-camera-module-5mp-ov5640/
Signed-off-by: Ernest Van Hoecke <ernest.vanhoecke@xxxxxxxxxxx>
---
arch/arm64/boot/dts/freescale/Makefile | 19 ++++++
...-verdin-mezzanine-ov5640-24mhz-alt-jumpers.dtso | 19 ++++++
...din-mezzanine-ov5640-24mhz-default-jumpers.dtso | 18 +++++
...imx8mp-verdin-mezzanine-ov5640-alt-jumpers.dtso | 38 +++++++++++
...mp-verdin-mezzanine-ov5640-default-jumpers.dtso | 42 ++++++++++++
.../freescale/imx8mp-verdin-mezzanine-ov5640.dtsi | 78 ++++++++++++++++++++++
6 files changed, 214 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 06d41b9faa79..8dcb5d9fc74f 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -736,6 +736,10 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mp-venice-gw75xx-2x.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-venice-gw82xx-2x.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-dev-nau8822-btl.dtbo
dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-dsi-to-hdmi.dtbo
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-mezzanine-ov5640-24mhz-alt-jumpers.dtbo
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-mezzanine-ov5640-24mhz-default-jumpers.dtbo
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-mezzanine-ov5640-alt-jumpers.dtbo
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-mezzanine-ov5640-default-jumpers.dtbo
dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-nonwifi-dahlia-dsi-to-hdmi.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-nonwifi-dahlia-panel-cap-touch-10inch-dsi.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-nonwifi-dahlia.dtb
@@ -754,6 +758,11 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dahlia-dsi-to-hdmi.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dahlia-panel-cap-touch-10inch-dsi.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dahlia.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dev-dsi-to-hdmi.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dev-dual-ov5640.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dev-mezzanine-ov5640-24mhz-alt-jumpers.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dev-mezzanine-ov5640-24mhz-default-jumpers.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dev-mezzanine-ov5640-alt-jumpers.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dev-mezzanine-ov5640-default-jumpers.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dev-nau8822-btl.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dev-ov5640-24mhz.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dev-ov5640.dtb
@@ -775,6 +784,16 @@ imx8mp-verdin-wifi-dahlia-dsi-to-hdmi-dtbs := imx8mp-verdin-wifi-dahlia.dtb imx8
imx8mp-verdin-wifi-dahlia-panel-cap-touch-10inch-dsi-dtbs := imx8mp-verdin-wifi-dahlia.dtb \
imx8mp-verdin-panel-cap-touch-10inch-dsi.dtbo
imx8mp-verdin-wifi-dev-dsi-to-hdmi-dtbs := imx8mp-verdin-wifi-dev.dtb imx8mp-verdin-dsi-to-hdmi.dtbo
+imx8mp-verdin-wifi-dev-dual-ov5640-dtbs := imx8mp-verdin-wifi-dev.dtb imx8m-verdin-ov5640.dtbo \
+ imx8mp-verdin-mezzanine-ov5640-alt-jumpers.dtbo
+imx8mp-verdin-wifi-dev-mezzanine-ov5640-24mhz-alt-jumpers-dtbs := imx8mp-verdin-wifi-dev.dtb \
+ imx8mp-verdin-mezzanine-ov5640-24mhz-alt-jumpers.dtbo
+imx8mp-verdin-wifi-dev-mezzanine-ov5640-24mhz-default-jumpers-dtbs := imx8mp-verdin-wifi-dev.dtb \
+ imx8mp-verdin-mezzanine-ov5640-24mhz-default-jumpers.dtbo
+imx8mp-verdin-wifi-dev-mezzanine-ov5640-alt-jumpers-dtbs := imx8mp-verdin-wifi-dev.dtb \
+ imx8mp-verdin-mezzanine-ov5640-alt-jumpers.dtbo
+imx8mp-verdin-wifi-dev-mezzanine-ov5640-default-jumpers-dtbs := imx8mp-verdin-wifi-dev.dtb \
+ imx8mp-verdin-mezzanine-ov5640-default-jumpers.dtbo
imx8mp-verdin-wifi-dev-nau8822-btl-dtbs := imx8mp-verdin-wifi-dev.dtb imx8mp-verdin-dev-nau8822-btl.dtbo
imx8mp-verdin-wifi-dev-ov5640-24mhz-dtbs := imx8mp-verdin-wifi-dev.dtb imx8m-verdin-ov5640-24mhz.dtbo
imx8mp-verdin-wifi-dev-ov5640-dtbs := imx8mp-verdin-wifi-dev.dtb imx8m-verdin-ov5640.dtbo
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-verdin-mezzanine-ov5640-24mhz-alt-jumpers.dtso b/arch/arm64/boot/dts/freescale/imx8mp-verdin-mezzanine-ov5640-24mhz-alt-jumpers.dtso
new file mode 100644
index 000000000000..9579ad2f2235
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin-mezzanine-ov5640-24mhz-alt-jumpers.dtso
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (c) Toradex
+ *
+ * Toradex CSI Camera Module 5MP OV5640 on the Verdin iMX8M Plus Mezzanine with
+ * alternate GPIO jumper positions.
+ *
+ * https://developer.toradex.com/hardware/legacy-products/other/csi-camera-module-5mp-ov5640/
+ * https://developer.toradex.com/hardware/verdin-som-family/add-ons/verdin-imx8m-plus-mezzanine/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include "imx8mp-verdin-mezzanine-ov5640-alt-jumpers.dtso"
+
+&clk_ov5640_mezz_osc {
+ clock-frequency = <24000000>;
+};
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-verdin-mezzanine-ov5640-24mhz-default-jumpers.dtso b/arch/arm64/boot/dts/freescale/imx8mp-verdin-mezzanine-ov5640-24mhz-default-jumpers.dtso
new file mode 100644
index 000000000000..2079f9ead22d
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin-mezzanine-ov5640-24mhz-default-jumpers.dtso
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (c) Toradex
+ *
+ * Toradex CSI Camera Module 5MP OV5640 on the Verdin iMX8M Plus Mezzanine.
+ *
+ * https://developer.toradex.com/hardware/legacy-products/other/csi-camera-module-5mp-ov5640/
+ * https://developer.toradex.com/hardware/verdin-som-family/add-ons/verdin-imx8m-plus-mezzanine/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include "imx8mp-verdin-mezzanine-ov5640-default-jumpers.dtso"
+
+&clk_ov5640_mezz_osc {
+ clock-frequency = <24000000>;
+};
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-verdin-mezzanine-ov5640-alt-jumpers.dtso b/arch/arm64/boot/dts/freescale/imx8mp-verdin-mezzanine-ov5640-alt-jumpers.dtso
new file mode 100644
index 000000000000..9f2372227a8d
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin-mezzanine-ov5640-alt-jumpers.dtso
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (c) Toradex
+ *
+ * Toradex CSI Camera Set 5MP OV5640 on the Verdin iMX8M Plus Mezzanine with
+ * alternate GPIO jumper positions.
+ * These positions support two cameras but share Verdin GPIO_2 with the Atmel
+ * MXT touchscreen.
+ *
+ * https://developer.toradex.com/hardware/accessories/cameras/csi-camera-module-5mp-ov5640-arducam
+ * https://developer.toradex.com/hardware/verdin-som-family/add-ons/verdin-imx8m-plus-mezzanine/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include "imx8mp-verdin-mezzanine-ov5640.dtsi"
+
+&{/} {
+ verdin_mezz_camera_connector: camera-connector-1 {
+ compatible = "toradex,camera-connector";
+ #gpio-cells = <2>;
+ /*
+ * CSI_2_GPIO_0_RST (pin 11) - JP5 1-2 - Verdin GPIO_1
+ * CSI_2_GPIO_1 (pin 22) - JP6 1-2 - Verdin GPIO_2
+ * CSI_2_GPIO_3 (pin 24) - JP8 1-2 - Verdin GPIO_4
+ */
+ gpio-map = <0 0 &gpio1 0 GPIO_ACTIVE_HIGH>,
+ <1 0 &gpio1 1 GPIO_ACTIVE_HIGH>,
+ <3 0 &gpio1 6 GPIO_ACTIVE_HIGH>;
+ gpio-map-mask = <0xffffffff 0x0>;
+ gpio-map-pass-thru = <0x0 0xffffffff>;
+ };
+};
+
+&clk_ov5640_mezz_osc {
+ clock-frequency = <27000000>;
+};
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-verdin-mezzanine-ov5640-default-jumpers.dtso b/arch/arm64/boot/dts/freescale/imx8mp-verdin-mezzanine-ov5640-default-jumpers.dtso
new file mode 100644
index 000000000000..801beb8f48a6
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin-mezzanine-ov5640-default-jumpers.dtso
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (c) Toradex
+ *
+ * Toradex CSI Camera Set 5MP OV5640 on the Verdin iMX8M Plus Mezzanine.
+ * The default jumper positions share GPIOs with the Verdin CSI_1 interface
+ * and do not support using both camera connectors at the same time.
+ *
+ * https://developer.toradex.com/hardware/accessories/cameras/csi-camera-module-5mp-ov5640-arducam
+ * https://developer.toradex.com/hardware/verdin-som-family/add-ons/verdin-imx8m-plus-mezzanine/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include "imx8mp-verdin-mezzanine-ov5640.dtsi"
+
+&{/} {
+ verdin_mezz_camera_connector: camera-connector-1 {
+ compatible = "toradex,camera-connector";
+ #gpio-cells = <2>;
+ /*
+ * CSI_2_GPIO_0_RST (pin 11) - JP5 2-3 - Verdin GPIO_5_CSI
+ * CSI_2_GPIO_1 (pin 22) - JP6 2-3 - Verdin GPIO_6_CSI
+ * CSI_2_GPIO_3 (pin 24) - JP8 2-3 - Verdin GPIO_8_CSI
+ */
+ gpio-map = <0 0 &gpio1 7 GPIO_ACTIVE_HIGH>,
+ <1 0 &gpio1 8 GPIO_ACTIVE_HIGH>,
+ <3 0 &gpio4 1 GPIO_ACTIVE_HIGH>;
+ gpio-map-mask = <0xffffffff 0x0>;
+ gpio-map-pass-thru = <0x0 0xffffffff>;
+ };
+};
+
+&clk_ov5640_mezz_osc {
+ clock-frequency = <27000000>;
+};
+
+&ov5640_mezz {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_gpio5>, <&pinctrl_gpio6>;
+};
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-verdin-mezzanine-ov5640.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-verdin-mezzanine-ov5640.dtsi
new file mode 100644
index 000000000000..3902ba62fb91
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin-mezzanine-ov5640.dtsi
@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * Copyright (c) Toradex
+ *
+ * Common device tree include for Toradex OV5640 CSI camera on the Verdin
+ * iMX8M Plus Mezzanine.
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+ compatible = "toradex,verdin-imx8mp";
+};
+
+&{/} {
+ clk_ov5640_mezz_osc: ov5640-mezzanine-xclk {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ };
+
+ reg_verdin_mezz_csi: regulator-mezzanine-csi {
+ compatible = "regulator-fixed";
+ gpios = <&verdin_mezz_camera_connector 3 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ regulator-name = "V_CSI_MEZZ";
+ startup-delay-us = <5000>;
+ };
+};
+
+&isi_0 {
+ status = "okay";
+};
+
+/* Verdin I2C_2_DSI (Mezzanine JP3 and JP4 in position 2-3) */
+&i2c2 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ status = "okay";
+
+ ov5640_mezz: camera@3c {
+ compatible = "ovti,ov5640";
+ reg = <0x3c>;
+ clocks = <&clk_ov5640_mezz_osc>;
+ clock-names = "xclk";
+ AVDD-supply = <&reg_verdin_mezz_csi>;
+ DOVDD-supply = <&reg_verdin_mezz_csi>;
+ DVDD-supply = <&reg_verdin_mezz_csi>;
+ powerdown-gpios = <&verdin_mezz_camera_connector 1 GPIO_ACTIVE_HIGH>;
+ reset-gpios = <&verdin_mezz_camera_connector 0 GPIO_ACTIVE_LOW>;
+
+ port {
+ ov5640_mezz_to_mipi_csi_1: endpoint {
+ clock-lanes = <0>;
+ data-lanes = <1 2>;
+ remote-endpoint = <&mipi_csi_1_in>;
+ };
+ };
+ };
+};
+
+&mipi_csi_1 {
+ status = "okay";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ mipi_csi_1_in: endpoint {
+ data-lanes = <1 2>;
+ remote-endpoint = <&ov5640_mezz_to_mipi_csi_1>;
+ };
+ };
+ };
+};

--
2.43.0