imx708: Add compatibility layer

Signed-off-by: Jesse Visser <[email protected]>

recipes-kernel/linux/files/imx708-overlay.dts

@@ -0,0 +1,105 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Definitions for IMX708 camera module on VC I2C bus
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+/{
+	compatible = "brcm,bcm2835";
+
+	fragment@0 {
+		target = <&i2c0if>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	clk_frag: fragment@1 {
+		target = <&cam1_clk>;
+		__overlay__ {
+			status = "okay";
+			clock-frequency = <24000000>;
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c0mux>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	reg_frag: fragment@3 {
+		target = <&cam1_reg>;
+		cam_reg: __overlay__ {
+			startup-delay-us = <70000>;
+			off-on-delay-us = <30000>;
+			regulator-min-microvolt = <2700000>;
+			regulator-max-microvolt = <2700000>;
+		};
+	};
+
+	fragment@4 {
+		target = <&cam_node>;
+		__overlay__ {
+			lens-focus = <&vcm_node>;
+		};
+	};
+
+	i2c_frag: fragment@100 {
+		target = <&i2c_csi_dsi>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			#include "imx708.dtsi"
+		};
+	};
+
+	csi_frag: fragment@101 {
+		target = <&csi1>;
+		csi: __overlay__ {
+			status = "okay";
+			brcm,media-controller;
+
+			port {
+				csi_ep: endpoint {
+					remote-endpoint = <&cam_endpoint>;
+					clock-lanes = <0>;
+					data-lanes = <1 2>;
+					clock-noncontinuous;
+				};
+			};
+		};
+	};
+
+	__overrides__ {
+		rotation = <&cam_node>,"rotation:0";
+		orientation = <&cam_node>,"orientation:0";
+		media-controller = <&csi>,"brcm,media-controller?";
+		cam0 = <&i2c_frag>, "target:0=",<&i2c_vc>,
+		       <&csi_frag>, "target:0=",<&csi0>,
+		       <&clk_frag>, "target:0=",<&cam0_clk>,
+		       <&reg_frag>, "target:0=",<&cam0_reg>,
+		       <&cam_node>, "clocks:0=",<&cam0_clk>,
+		       <&cam_node>, "VANA1-supply:0=",<&cam0_reg>,
+		       <&vcm_node>, "VDD-supply:0=",<&cam0_reg>;
+		vcm = <&vcm_node>, "status",
+		      <0>, "=4";
+		link-frequency = <&cam_endpoint>,"link-frequencies#0";
+	};
+};
+
+&cam_node {
+	status = "okay";
+};
+
+&cam_endpoint {
+	remote-endpoint = <&csi_ep>;
+};
+
+&vcm_node {
+	status = "okay";
+};

recipes-kernel/linux/files/imx708.dtsi

@@ -0,0 +1,35 @@
+// Fragment that configures a Sony IMX708
+
+cam_node: imx708@1a {
+	compatible = "sony,imx708";
+	reg = <0x1a>;
+	status = "disabled";
+
+	clocks = <&cam1_clk>;
+	clock-names = "inclk";
+
+	vana1-supply = <&cam1_reg>;	/* 2.8v */
+	vana2-supply = <&cam_dummy_reg>;/* 1.8v */
+	vdig-supply = <&cam_dummy_reg>;	/* 1.1v */
+	vddl-supply = <&cam_dummy_reg>;	/* 1.8v */
+
+	rotation = <180>;
+	orientation = <2>;
+
+	port {
+		cam_endpoint: endpoint {
+			clock-lanes = <0>;
+			data-lanes = <1 2>;
+			clock-noncontinuous;
+			link-frequencies =
+				/bits/ 64 <450000000>;
+		};
+	};
+};
+
+vcm_node: dw9817@c {
+	compatible = "dongwoon,dw9817-vcm";
+	reg = <0x0c>;
+	status = "disabled";
+	VDD-supply = <&cam1_reg>;
+};

recipes-kernel/linux/linux-raspberrypi-dev.bb

@@ -24,6 +24,8 @@ SRC_URI = " \
     git://git.yoctoproject.org/yocto-kernel-cache;type=kmeta;name=meta;branch=${LINUX_RPI_KMETA_BRANCH};destsuffix=${KMETA} \
     file://powersave.cfg \
     file://android-drivers.cfg \
+    file://imx708-overlay.dts;subdir=git/arch/${ARCH}/boot/dts/overlays \
+    file://imx708-overlay.dtsi;subdir=git/arch/${ARCH}/boot/dts/overlays \
     "
 
 require linux-raspberrypi.inc

recipes-kernel/linux/linux-raspberrypi_5.10.bb

@@ -12,6 +12,8 @@ SRC_URI = " \
     git://git.yoctoproject.org/yocto-kernel-cache;type=kmeta;name=meta;branch=${LINUX_RPI_KMETA_BRANCH};destsuffix=${KMETA} \
     file://powersave.cfg \
     file://android-drivers.cfg \
+    file://imx708-overlay.dts;subdir=git/arch/${ARCH}/boot/dts/overlays \
+    file://imx708-overlay.dtsi;subdir=git/arch/${ARCH}/boot/dts/overlays \
     "
 
 require linux-raspberrypi.inc