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