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

   1 From 870de3bc0e80a9b79b470a45636437a0078041c1 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Tue, 7 Jul 2020 16:12:05 +0100
   4 Subject: [PATCH] dtoverlays: Create an overlay for the Omnivision
   5  OV7251 sensor
   6
   7 Adds an overlay for the OV7251 VGA global shutter sensor.
   8
   9 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  10 ---
  11  arch/arm/boot/dts/overlays/Makefile           |   1 +
  12  arch/arm/boot/dts/overlays/README             |   8 ++
  13  arch/arm/boot/dts/overlays/ov7251-overlay.dts | 111 ++++++++++++++++++
  14  3 files changed, 120 insertions(+)
  15  create mode 100644 arch/arm/boot/dts/overlays/ov7251-overlay.dts
  16
  17 --- a/arch/arm/boot/dts/overlays/Makefile
  18 +++ b/arch/arm/boot/dts/overlays/Makefile
  19 @@ -115,6 +115,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  20         mpu6050.dtbo \
  21         mz61581.dtbo \
  22         ov5647.dtbo \
  23 +       ov7251.dtbo \
  24         ov9281.dtbo \
  25         papirus.dtbo \
  26         pibell.dtbo \
  27 --- a/arch/arm/boot/dts/overlays/README
  28 +++ b/arch/arm/boot/dts/overlays/README
  29 @@ -1813,6 +1813,14 @@ Load:   dtoverlay=ov5647
  30  Params: <None>
  31
  32
  33 +Name:   ov7251
  34 +Info:   Omnivision OV7251 camera module.
  35 +        Uses Unicam 1, which is the standard camera connector on most Pi
  36 +        variants.
  37 +Load:   dtoverlay=ov7251
  38 +Params: <None>
  39 +
  40 +
  41  Name:   ov9281
  42  Info:   Omnivision OV9281 camera module.
  43          Uses Unicam 1, which is the standard camera connector on most Pi
  44 --- /dev/null
  45 +++ b/arch/arm/boot/dts/overlays/ov7251-overlay.dts
  46 @@ -0,0 +1,111 @@
  47 +// SPDX-License-Identifier: GPL-2.0-only
  48 +// Definitions for OV7251 camera module on VC I2C bus
  49 +/dts-v1/;
  50 +/plugin/;
  51 +
  52 +#include <dt-bindings/gpio/gpio.h>
  53 +
  54 +/{
  55 +       compatible = "brcm,bcm2835";
  56 +
  57 +       fragment@0 {
  58 +               target = <&i2c_csi_dsi>;
  59 +               __overlay__ {
  60 +                       #address-cells = <1>;
  61 +                       #size-cells = <0>;
  62 +                       status = "okay";
  63 +
  64 +                       ov7251: ov7251@60 {
  65 +                               compatible = "ovti,ov7251";
  66 +                               reg = <0x60>;
  67 +                               status = "okay";
  68 +
  69 +                               clocks = <&ov7251_clk>;
  70 +                               clock-names = "xclk";
  71 +                               clock-frequency = <24000000>;
  72 +
  73 +                               vdddo-supply = <&ov7251_dovdd>;
  74 +                               vdda-supply = <&ov7251_avdd>;
  75 +                               vddd-supply = <&ov7251_dvdd>;
  76 +
  77 +                               enable-gpios = <&gpio 41 GPIO_ACTIVE_HIGH>;
  78 +
  79 +                               port {
  80 +                                       ov7251_0: endpoint {
  81 +                                               remote-endpoint = <&csi1_ep>;
  82 +                                               clock-lanes = <0>;
  83 +                                               data-lanes = <1>;
  84 +                                               clock-noncontinuous;
  85 +                                               link-frequencies =
  86 +                                                       /bits/ 64 <456000000>;
  87 +                                       };
  88 +                               };
  89 +                       };
  90 +               };
  91 +       };
  92 +
  93 +       fragment@1 {
  94 +               target = <&csi1>;
  95 +               __overlay__ {
  96 +                       status = "okay";
  97 +
  98 +                       port {
  99 +                               csi1_ep: endpoint {
 100 +                                       remote-endpoint = <&ov7251_0>;
 101 +                                       data-lanes = <1>;
 102 +                               };
 103 +                       };
 104 +               };
 105 +       };
 106 +
 107 +       fragment@2 {
 108 +               target = <&i2c0if>;
 109 +               __overlay__ {
 110 +                       status = "okay";
 111 +               };
 112 +       };
 113 +
 114 +       fragment@3 {
 115 +               target-path="/";
 116 +               __overlay__ {
 117 +                       ov7251_avdd: fixedregulator@0 {
 118 +                               compatible = "regulator-fixed";
 119 +                               regulator-name = "ov7251_avdd";
 120 +                               regulator-min-microvolt = <2800000>;
 121 +                               regulator-max-microvolt = <2800000>;
 122 +                       };
 123 +                       ov7251_dovdd: fixedregulator@1 {
 124 +                               compatible = "regulator-fixed";
 125 +                               regulator-name = "ov7251_dovdd";
 126 +                               regulator-min-microvolt = <1800000>;
 127 +                               regulator-max-microvolt = <1800000>;
 128 +                       };
 129 +                       ov7251_dvdd: fixedregulator@2 {
 130 +                               compatible = "regulator-fixed";
 131 +                               regulator-name = "ov7251_dvdd";
 132 +                               regulator-min-microvolt = <1200000>;
 133 +                               regulator-max-microvolt = <1200000>;
 134 +                       };
 135 +                       ov7251_clk: ov7251-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 = <&ov7251>,"enable-gpios:0";
 154 +                       cam0-pwdn      = <&ov7251>,"enable-gpios:4";
 155 +               };
 156 +       };
 157 +};