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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";
+ };
+};
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