target/linux/bcm27xx/patches-4.19/950-0280-dtoverlays-Correct-DT-handling-camera-GPIOs.patch

   1 From 5c0dfdba54fdaeb813d8535283aa8f75080e1055 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.org>
   3 Date: Tue, 18 Sep 2018 10:47:38 +0100
   4 Subject: [PATCH] dtoverlays: Correct DT handling camera GPIOs
   5
   6 The firmware has support for updating overrides with the correct
   7 GPIO settings for the camera GPIOs, but the wrong device tree
   8 setup ended up being merged.
   9 Correct the DT configuration so that the firmware does set it
  10 up correctly.
  11
  12 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
  13 ---
  14  arch/arm/boot/dts/bcm270x.dtsi                |  7 +++++++
  15  arch/arm/boot/dts/overlays/README             | 10 +---------
  16  arch/arm/boot/dts/overlays/ov5647-overlay.dts | 14 +++++++++++---
  17  3 files changed, 19 insertions(+), 12 deletions(-)
  18
  19 --- a/arch/arm/boot/dts/bcm270x.dtsi
  20 +++ b/arch/arm/boot/dts/bcm270x.dtsi
  21 @@ -152,6 +152,13 @@
  22                 regulator-max-microvolt = <3300000>;
  23                 regulator-always-on;
  24         };
  25 +
  26 +       __overrides__ {
  27 +               cam0-pwdn-ctrl;
  28 +               cam0-pwdn;
  29 +               cam0-led-ctrl;
  30 +               cam0-led;
  31 +       };
  32  };
  33
  34  &vc4 {
  35 --- a/arch/arm/boot/dts/overlays/README
  36 +++ b/arch/arm/boot/dts/overlays/README
  37 @@ -1366,15 +1366,7 @@ Info:   Omnivision OV5647 camera module.
  38          Uses Unicam 1, which is the standard camera connector on most Pi
  39          variants.
  40  Load:   dtoverlay=ov5647,<param>=<val>
  41 -Params: cam0-pwdn               GPIO used to control the sensor powerdown line.
  42 -
  43 -        cam0-led                GPIO used to control the sensor led
  44 -                                Both these fields should be automatically filled
  45 -                                in by the firmware to reflect the default GPIO
  46 -                                configuration of the particular Pi variant in
  47 -                                use.
  48 -
  49 -        i2c_pins_0_1            Use pins 0&1 for the I2C instead of 44&45.
  50 +Params: i2c_pins_0_1            Use pins 0&1 for the I2C instead of 44&45.
  51                                  Useful on Compute Modules.
  52
  53          i2c_pins_28_29          Use pins 28&29 for the I2C instead of 44&45.
  54 --- a/arch/arm/boot/dts/overlays/ov5647-overlay.dts
  55 +++ b/arch/arm/boot/dts/overlays/ov5647-overlay.dts
  56 @@ -14,7 +14,7 @@
  57                         status = "okay";
  58
  59                         ov5647: ov5647@36 {
  60 -                               compatible = "ov5647";
  61 +                               compatible = "ovti,ov5647";
  62                                 reg = <0x36>;
  63                                 status = "okay";
  64
  65 @@ -82,10 +82,18 @@
  66                 };
  67         };
  68
  69 +       fragment@6 {
  70 +               target-path="/__overrides__";
  71 +               __overlay__ {
  72 +                       cam0-pwdn-ctrl = <&ov5647>,"pwdn-gpios:0";
  73 +                       cam0-pwdn      = <&ov5647>,"pwdn-gpios:4";
  74 +                       cam0-led-ctrl  = <&ov5647>,"pwdn-gpios:12";
  75 +                       cam0-led       = <&ov5647>,"pwdn-gpios:16";
  76 +               };
  77 +       };
  78 +
  79         __overrides__ {
  80                 i2c_pins_0_1 = <0>,"-2-3+4";
  81                 i2c_pins_28_29 = <0>,"+2-3-4";
  82 -               cam0-pwdn = <&ov5647>,"pwdn-gpios:4";
  83 -               cam0-led = <&ov5647>,"pwdn-gpios:16";
  84         };
  85  };