git.openwrt.org Git - openwrt/staging/ldir.git/blob

   1 From 489b7fc3df2013766f3c4d5f682dcc7992950293 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Mon, 6 Jul 2020 17:32:21 +0100
   4 Subject: [PATCH] dtoverlay: Add overlay for Omnivision OV9281 image
   5  sensor
   6
   7 Adds an overlay for the OV9281 mono imaging sensor using 2 CSI-2
   8 data lanes.
   9
  10 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  11 ---
  12  arch/arm/boot/dts/overlays/Makefile           |   1 +
  13  arch/arm/boot/dts/overlays/README             |   8 ++
  14  arch/arm/boot/dts/overlays/ov9281-overlay.dts | 110 ++++++++++++++++++
  15  3 files changed, 119 insertions(+)
  16  create mode 100644 arch/arm/boot/dts/overlays/ov9281-overlay.dts
  17
  18 --- a/arch/arm/boot/dts/overlays/Makefile
  19 +++ b/arch/arm/boot/dts/overlays/Makefile
  20 @@ -115,6 +115,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  21         mpu6050.dtbo \
  22         mz61581.dtbo \
  23         ov5647.dtbo \
  24 +       ov9281.dtbo \
  25         papirus.dtbo \
  26         pibell.dtbo \
  27         piglow.dtbo \
  28 --- a/arch/arm/boot/dts/overlays/README
  29 +++ b/arch/arm/boot/dts/overlays/README
  30 @@ -1813,6 +1813,14 @@ Load:   dtoverlay=ov5647
  31  Params: <None>
  32
  33
  34 +Name:   ov9281
  35 +Info:   Omnivision OV9281 camera module.
  36 +        Uses Unicam 1, which is the standard camera connector on most Pi
  37 +        variants.
  38 +Load:   dtoverlay=ov9281
  39 +Params: <None>
  40 +
  41 +
  42  Name:   papirus
  43  Info:   PaPiRus ePaper Screen by Pi Supply (both HAT and pHAT)
  44  Load:   dtoverlay=papirus,<param>=<val>
  45 --- /dev/null
  46 +++ b/arch/arm/boot/dts/overlays/ov9281-overlay.dts
  47 @@ -0,0 +1,110 @@
  48 +// SPDX-License-Identifier: GPL-2.0-only
  49 +// Definitions for OV9281 camera module on VC I2C bus
  50 +/dts-v1/;
  51 +/plugin/;
  52 +
  53 +#include <dt-bindings/gpio/gpio.h>
  54 +
  55 +/{
  56 +       compatible = "brcm,bcm2835";
  57 +
  58 +       fragment@0 {
  59 +               target = <&i2c_csi_dsi>;
  60 +               __overlay__ {
  61 +                       #address-cells = <1>;
  62 +                       #size-cells = <0>;
  63 +                       status = "okay";
  64 +
  65 +                       ov9281: ov9281@60 {
  66 +                               compatible = "ovti,ov9281";
  67 +                               reg = <0x60>;
  68 +                               status = "okay";
  69 +
  70 +                               clocks = <&ov9281_clk>;
  71 +                               clock-names = "xvclk";
  72 +
  73 +                               avdd-supply = <&ov9281_avdd>;
  74 +                               dovdd-supply = <&ov9281_dovdd>;
  75 +                               dvdd-supply = <&ov9281_dvdd>;
  76 +
  77 +                               port {
  78 +                                       ov9281_0: endpoint {
  79 +                                               remote-endpoint = <&csi1_ep>;
  80 +                                               clock-lanes = <0>;
  81 +                                               data-lanes = <1 2>;
  82 +                                               clock-noncontinuous;
  83 +                                               link-frequencies =
  84 +                                                       /bits/ 64 <456000000>;
  85 +                                       };
  86 +                               };
  87 +                       };
  88 +               };
  89 +       };
  90 +
  91 +       fragment@1 {
  92 +               target = <&csi1>;
  93 +               __overlay__ {
  94 +                       status = "okay";
  95 +
  96 +                       port {
  97 +                               csi1_ep: endpoint {
  98 +                                       remote-endpoint = <&ov9281_0>;
  99 +                                       data-lanes = <1 2>;
 100 +                               };
 101 +                       };
 102 +               };
 103 +       };
 104 +
 105 +       fragment@2 {
 106 +               target = <&i2c0if>;
 107 +               __overlay__ {
 108 +                       status = "okay";
 109 +               };
 110 +       };
 111 +
 112 +       fragment@3 {
 113 +               target-path="/";
 114 +               __overlay__ {
 115 +                       ov9281_avdd: fixedregulator@0 {
 116 +                               compatible = "regulator-fixed";
 117 +                               regulator-name = "ov9281_avdd";
 118 +                               regulator-min-microvolt = <2800000>;
 119 +                               regulator-max-microvolt = <2800000>;
 120 +                               gpio = <&gpio 41 GPIO_ACTIVE_HIGH>;
 121 +                               enable-active-high;
 122 +                       };
 123 +                       ov9281_dovdd: fixedregulator@1 {
 124 +                               compatible = "regulator-fixed";
 125 +                               regulator-name = "ov9281_dovdd";
 126 +                               regulator-min-microvolt = <1800000>;
 127 +                               regulator-max-microvolt = <1800000>;
 128 +                       };
 129 +                       ov9281_dvdd: fixedregulator@2 {
 130 +                               compatible = "regulator-fixed";
 131 +                               regulator-name = "ov9281_dvdd";
 132 +                               regulator-min-microvolt = <1200000>;
 133 +                               regulator-max-microvolt = <1200000>;
 134 +                       };
 135 +                       ov9281_clk: ov9281-clk {
 136 +                               compatible = "fixed-clock";
 137 +                               #clock-cells = <0>;
 138 +                               clock-frequency = <24000000>;
 139 +                       };
 140 +               };
 141 +       };
 142 +
 143 +       fragment@4 {
 144 +               target = <&i2c0mux>;
 145 +               __overlay__ {
 146 +                       status = "okay";
 147 +               };
 148 +       };
 149 +
 150 +       fragment@5 {
 151 +               target-path="/__overrides__";
 152 +               __overlay__ {
 153 +                       cam0-pwdn-ctrl = <&ov9281_avdd>,"gpio:0";
 154 +                       cam0-pwdn      = <&ov9281_avdd>,"gpio:4";
 155 +               };
 156 +       };
 157 +};