openwrt/target/linux/brcm2708/patches-4.19/950-0681-dtoverlays-Add-overlay-for-the-Sony-IMX219-image-sen.patch

From 7a4d12054b24c8cb980be4c6466b50c14beb78d3 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.org>
Date: Wed, 28 Aug 2019 13:35:19 +0100
Subject: [PATCH] dtoverlays: Add overlay for the Sony IMX219 image
 sensor.

Adds an overlay for the IMX219 image sensor, connected to the
Unicam CSI2 receiver peripheral.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
---
 arch/arm/boot/dts/overlays/Makefile           |   1 +
 arch/arm/boot/dts/overlays/README             |  12 ++
 arch/arm/boot/dts/overlays/imx219-overlay.dts | 129 ++++++++++++++++++
 3 files changed, 142 insertions(+)
 create mode 100644 arch/arm/boot/dts/overlays/imx219-overlay.dts

--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -77,6 +77,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
 	i2c6.dtbo \
 	i2s-gpio28-31.dtbo \
 	ilitek251x.dtbo \
+	imx219.dtbo \
 	iqaudio-codec.dtbo \
 	iqaudio-dac.dtbo \
 	iqaudio-dacplus.dtbo \
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -1269,6 +1269,18 @@ Params: interrupt               GPIO use
                                 touchscreen (in pixels)
 
 
+Name:   imx219
+Info:   Sony IMX219 camera module.
+        Uses Unicam 1, which is the standard camera connector on most Pi
+        variants.
+Load:   dtoverlay=imx219,<param>=<val>
+Params: i2c_pins_0_1            Use pins 0&1 for the I2C instead of 44&45.
+                                Useful on Compute Modules.
+
+        i2c_pins_28_29          Use pins 28&29 for the I2C instead of 44&45.
+                                This is required for Pi B+, 2, 0, and 0W.
+
+
 Name:   iqaudio-codec
 Info:   Configures the IQaudio Codec audio card
 Load:   dtoverlay=iqaudio-codec
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/imx219-overlay.dts
@@ -0,0 +1,129 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Definitions for IMX219 camera module on VC I2C bus
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+/{
+	compatible = "brcm,bcm2835";
+
+	fragment@0 {
+		target = <&i2c_vc>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			imx219: imx219@10 {
+				compatible = "sony,imx219";
+				reg = <0x10>;
+				status = "okay";
+
+				clocks = <&imx219_clk>;
+				clock-names = "xclk";
+
+				VANA-supply = <&imx219_vana>;	/* 2.8v */
+				VDIG-supply = <&imx219_vdig>;	/* 1.8v */
+				VDDL-supply = <&imx219_vddl>;	/* 1.2v */
+
+				imx219_clk: camera-clk {
+					compatible = "fixed-clock";
+					#clock-cells = <0>;
+					clock-frequency = <24000000>;
+				};
+
+				port {
+					imx219_0: endpoint {
+						remote-endpoint = <&csi1_ep>;
+						clock-lanes = <0>;
+						data-lanes = <1 2>;
+						clock-noncontinuous;
+						link-frequencies =
+							/bits/ 64 <297000000>;
+					};
+				};
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&csi1>;
+		__overlay__ {
+			status = "okay";
+
+			port {
+				csi1_ep: endpoint {
+					remote-endpoint = <&imx219_0>;
+				};
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c0_pins>;
+		__dormant__ {
+			brcm,pins = <28 29>;
+			brcm,function = <4>; /* alt0 */
+		};
+	};
+	fragment@3 {
+		target = <&i2c0_pins>;
+		__overlay__ {
+			brcm,pins = <44 45>;
+			brcm,function = <5>; /* alt1 */
+		};
+	};
+	fragment@4 {
+		target = <&i2c0_pins>;
+		__dormant__ {
+			brcm,pins = <0 1>;
+			brcm,function = <4>; /* alt0 */
+		};
+	};
+	fragment@5 {
+		target = <&i2c_vc>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@6 {
+		target-path="/";
+		__overlay__ {
+			imx219_vana: fixedregulator@0 {
+				compatible = "regulator-fixed";
+				regulator-name = "imx219_vana";
+				regulator-min-microvolt = <2800000>;
+				regulator-max-microvolt = <2800000>;
+				gpio = <&gpio 41 GPIO_ACTIVE_HIGH>;
+				enable-active-high;
+			};
+			imx219_vdig: fixedregulator@1 {
+				compatible = "regulator-fixed";
+				regulator-name = "imx219_vdig";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+			};
+			imx219_vddl: fixedregulator@2 {
+				compatible = "regulator-fixed";
+				regulator-name = "imx219_vddl";
+				regulator-min-microvolt = <1200000>;
+				regulator-max-microvolt = <1200000>;
+			};
+		};
+	};
+
+	fragment@7 {
+		target-path="/__overrides__";
+		__overlay__ {
+			cam0-pwdn-ctrl = <&imx219_vana>,"gpio:0";
+			cam0-pwdn      = <&imx219_vana>,"gpio:4";
+		};
+	};
+
+	__overrides__ {
+		i2c_pins_0_1 = <0>,"-2-3+4";
+		i2c_pins_28_29 = <0>,"+2-3-4";
+	};
+};