1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
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
Adds an overlay for the OV9281 mono imaging sensor using 2 CSI-2
data lanes.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
arch/arm/boot/dts/overlays/Makefile | 1 +
arch/arm/boot/dts/overlays/README | 8 ++
arch/arm/boot/dts/overlays/ov9281-overlay.dts | 110 ++++++++++++++++++
3 files changed, 119 insertions(+)
create mode 100644 arch/arm/boot/dts/overlays/ov9281-overlay.dts
--- 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 \
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -1813,6 +1813,14 @@ Load: dtoverlay=ov5647
Params: <None>
+Name: ov9281
+Info: Omnivision OV9281 camera module.
+ Uses Unicam 1, which is the standard camera connector on most Pi
+ variants.
+Load: dtoverlay=ov9281
+Params: <None>
+
+
Name: papirus
Info: PaPiRus ePaper Screen by Pi Supply (both HAT and pHAT)
Load: dtoverlay=papirus,<param>=<val>
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/ov9281-overlay.dts
@@ -0,0 +1,110 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Definitions for OV9281 camera module on VC I2C bus
+/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>;
+ status = "okay";
+
+ clocks = <&ov9281_clk>;
+ clock-names = "xvclk";
+
+ avdd-supply = <&ov9281_avdd>;
+ dovdd-supply = <&ov9281_dovdd>;
+ dvdd-supply = <&ov9281_dvdd>;
+
+ port {
+ ov9281_0: endpoint {
+ remote-endpoint = <&csi1_ep>;
+ clock-lanes = <0>;
+ data-lanes = <1 2>;
+ clock-noncontinuous;
+ link-frequencies =
+ /bits/ 64 <456000000>;
+ };
+ };
+ };
+ };
+ };
+
+ fragment@1 {
+ target = <&csi1>;
+ __overlay__ {
+ status = "okay";
+
+ port {
+ csi1_ep: endpoint {
+ remote-endpoint = <&ov9281_0>;
+ data-lanes = <1 2>;
+ };
+ };
+ };
+ };
+
+ fragment@2 {
+ target = <&i2c0if>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@3 {
+ target-path="/";
+ __overlay__ {
+ ov9281_avdd: fixedregulator@0 {
+ compatible = "regulator-fixed";
+ regulator-name = "ov9281_avdd";
+ regulator-min-microvolt = <2800000>;
+ regulator-max-microvolt = <2800000>;
+ gpio = <&gpio 41 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ };
+ ov9281_dovdd: fixedregulator@1 {
+ compatible = "regulator-fixed";
+ regulator-name = "ov9281_dovdd";
+ 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 {
+ 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";
+ };
+ };
+};
|
