target/linux/brcm2708/patches-4.4/0304-dts-add-overlay-for-pitft22.patch

   1 From 9a5679751907b45b2470c02322dff8e87980464a Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Petter=20Mab=C3=A4cker?= <petter@technux.se>
   3 Date: Fri, 8 Jan 2016 09:02:44 +0100
   4 Subject: [PATCH] dts: add overlay for pitft22
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 Add the pitft22 overlay from adafruit Adafruit-Pi-Kernel-o-Matic repo:
  10 https://github.com/adafruit/Adafruit-Pi-Kernel-o-Matic
  11
  12 Signed-off-by: Petter Mabäcker <petter@technux.se>
  13 Signed-off-by: Andrei Gherzan <andrei@resin.io>
  14 ---
  15  arch/arm/boot/dts/overlays/Makefile            |  1 +
  16  arch/arm/boot/dts/overlays/README              | 12 +++++
  17  arch/arm/boot/dts/overlays/pitft22-overlay.dts | 69 ++++++++++++++++++++++++++
  18  3 files changed, 82 insertions(+)
  19  create mode 100644 arch/arm/boot/dts/overlays/pitft22-overlay.dts
  20
  21 --- a/arch/arm/boot/dts/overlays/Makefile
  22 +++ b/arch/arm/boot/dts/overlays/Makefile
  23 @@ -51,6 +51,7 @@ dtbo-$(RPI_DT_OVERLAYS) += pi3-disable-b
  24  dtbo-$(RPI_DT_OVERLAYS) += pi3-miniuart-bt.dtbo
  25  dtbo-$(RPI_DT_OVERLAYS) += piscreen.dtbo
  26  dtbo-$(RPI_DT_OVERLAYS) += piscreen2r.dtbo
  27 +dtbo-$(RPI_DT_OVERLAYS) += pitft22.dtbo
  28  dtbo-$(RPI_DT_OVERLAYS) += pitft28-capacitive.dtbo
  29  dtbo-$(RPI_DT_OVERLAYS) += pitft28-resistive.dtbo
  30  dtbo-$(RPI_DT_OVERLAYS) += pps-gpio.dtbo
  31 --- a/arch/arm/boot/dts/overlays/README
  32 +++ b/arch/arm/boot/dts/overlays/README
  33 @@ -644,6 +644,18 @@ Params: speed                   Display
  34          xohms                   Touchpanel sensitivity (X-plate resistance)
  35
  36
  37 +Name:   pitft22
  38 +Info:   Adafruit PiTFT 2.2" screen
  39 +Load:   dtoverlay=pitft22,<param>=<val>
  40 +Params: speed                   Display SPI bus speed
  41 +
  42 +        rotate                  Display rotation {0,90,180,270}
  43 +
  44 +        fps                     Delay between frame updates
  45 +
  46 +        debug                   Debug output level {0-7}
  47 +
  48 +
  49  Name:   pitft28-capacitive
  50  Info:   Adafruit PiTFT 2.8" capacitive touch screen
  51  Load:   dtoverlay=pitft28-capacitive,<param>=<val>
  52 --- /dev/null
  53 +++ b/arch/arm/boot/dts/overlays/pitft22-overlay.dts
  54 @@ -0,0 +1,69 @@
  55 +/*
  56 + * Device Tree overlay for pitft by Adafruit
  57 + *
  58 + */
  59 +
  60 +/dts-v1/;
  61 +/plugin/;
  62 +
  63 +/ {
  64 +        compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
  65 +
  66 +        fragment@0 {
  67 +                target = <&spi0>;
  68 +                __overlay__ {
  69 +                        status = "okay";
  70 +
  71 +                        spidev@0{
  72 +                                status = "disabled";
  73 +                        };
  74 +
  75 +                        spidev@1{
  76 +                                status = "disabled";
  77 +                        };
  78 +                };
  79 +        };
  80 +
  81 +        fragment@1 {
  82 +                target = <&gpio>;
  83 +                __overlay__ {
  84 +                        pitft_pins: pitft_pins {
  85 +                                brcm,pins = <25>;
  86 +                                brcm,function = <1>; /* out */
  87 +                                brcm,pull = <0>; /* none */
  88 +                        };
  89 +                };
  90 +        };
  91 +
  92 +        fragment@2 {
  93 +                target = <&spi0>;
  94 +                __overlay__ {
  95 +                        /* needed to avoid dtc warning */
  96 +                        #address-cells = <1>;
  97 +                        #size-cells = <0>;
  98 +
  99 +                        pitft: pitft@0{
 100 +                                compatible = "ilitek,ili9340";
 101 +                                reg = <0>;
 102 +                                pinctrl-names = "default";
 103 +                                pinctrl-0 = <&pitft_pins>;
 104 +
 105 +                                spi-max-frequency = <32000000>;
 106 +                                rotate = <90>;
 107 +                                fps = <25>;
 108 +                                bgr;
 109 +                                buswidth = <8>;
 110 +                                dc-gpios = <&gpio 25 0>;
 111 +                                debug = <0>;
 112 +                        };
 113 +
 114 +                };
 115 +        };
 116 +
 117 +        __overrides__ {
 118 +                speed =   <&pitft>,"spi-max-frequency:0";
 119 +                rotate =  <&pitft>,"rotate:0";
 120 +                fps =     <&pitft>,"fps:0";
 121 +                debug =   <&pitft>,"debug:0";
 122 +        };
 123 +};