lede/target/linux/bcm27xx/patches-5.4/950-0875-dtoverlay-Add-overlay-for-Omnivision-OV9281-image-se.patch

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From 489b7fc3df2013766f3c4d5f682dcc7992950293 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Mon, 6 Jul 2020 17:32:21 +0100
Subject: [PATCH] dtoverlay: Add overlay for Omnivision OV9281 image
sensor
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Adds an overlay for the OV9281 mono imaging sensor using 2 CSI-2
data lanes.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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---
arch/arm/boot/dts/overlays/Makefile | 1 +
arch/arm/boot/dts/overlays/README | 8 ++
arch/arm/boot/dts/overlays/ov9281-overlay.dts | 110 ++++++++++++++++++
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3 files changed, 119 insertions(+)
create mode 100644 arch/arm/boot/dts/overlays/ov9281-overlay.dts
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--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -115,6 +115,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
mpu6050.dtbo \
mz61581.dtbo \
ov5647.dtbo \
+ ov9281.dtbo \
papirus.dtbo \
pibell.dtbo \
piglow.dtbo \
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--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -1813,6 +1813,14 @@ Load: dtoverlay=ov5647
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Params: <None>
+Name: ov9281
+Info: Omnivision OV9281 camera module.
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+ Uses Unicam 1, which is the standard camera connector on most Pi
+ variants.
+Load: dtoverlay=ov9281
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+Params: <None>
+
+
Name: papirus
Info: PaPiRus ePaper Screen by Pi Supply (both HAT and pHAT)
Load: dtoverlay=papirus,<param>=<val>
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--- /dev/null
+++ b/arch/arm/boot/dts/overlays/ov9281-overlay.dts
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@@ -0,0 +1,110 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Definitions for OV9281 camera module on VC I2C bus
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+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+/{
+ compatible = "brcm,bcm2835";
+
+ fragment@0 {
+ target = <&i2c_csi_dsi>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ ov9281: ov9281@60 {
+ compatible = "ovti,ov9281";
+ reg = <0x60>;
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+ status = "okay";
+
+ clocks = <&ov9281_clk>;
+ clock-names = "xvclk";
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+
+ avdd-supply = <&ov9281_avdd>;
+ dovdd-supply = <&ov9281_dovdd>;
+ dvdd-supply = <&ov9281_dvdd>;
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+
+ port {
+ ov9281_0: endpoint {
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+ remote-endpoint = <&csi1_ep>;
+ clock-lanes = <0>;
+ data-lanes = <1 2>;
+ clock-noncontinuous;
+ link-frequencies =
+ /bits/ 64 <456000000>;
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+ };
+ };
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&csi1>;
+ __overlay__ {
+ status = "okay";
+
+ port {
+ csi1_ep: endpoint {
+ remote-endpoint = <&ov9281_0>;
+ data-lanes = <1 2>;
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+ };
+ };
+ };
+ };
+
+ fragment@2 {
+ target = <&i2c0if>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@3 {
+ target-path="/";
+ __overlay__ {
+ ov9281_avdd: fixedregulator@0 {
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+ compatible = "regulator-fixed";
+ regulator-name = "ov9281_avdd";
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+ regulator-min-microvolt = <2800000>;
+ regulator-max-microvolt = <2800000>;
+ gpio = <&gpio 41 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ };
+ ov9281_dovdd: fixedregulator@1 {
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+ compatible = "regulator-fixed";
+ regulator-name = "ov9281_dovdd";
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+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ };
+ ov9281_dvdd: fixedregulator@2 {
+ compatible = "regulator-fixed";
+ regulator-name = "ov9281_dvdd";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1200000>;
+ };
+ ov9281_clk: ov9281-clk {
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+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <24000000>;
+ };
+ };
+ };
+
+ fragment@4 {
+ target = <&i2c0mux>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@5 {
+ target-path="/__overrides__";
+ __overlay__ {
+ cam0-pwdn-ctrl = <&ov9281_avdd>,"gpio:0";
+ cam0-pwdn = <&ov9281_avdd>,"gpio:4";
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+ };
+ };
+};