target/linux/brcm2708/patches-4.4/0108-New-overlay-for-PiScreen2r.patch

   1 From a4b5aa412585674d4a4f2ba7c0d818fd796f51c3 Mon Sep 17 00:00:00 2001
   2 From: mwilliams03 <mark.mwilliams@gmail.com>
   3 Date: Sun, 18 Oct 2015 17:07:24 -0700
   4 Subject: [PATCH 108/170] New overlay for PiScreen2r
   5
   6 ---
   7  arch/arm/boot/dts/overlays/Makefile               |   1 +
   8  arch/arm/boot/dts/overlays/README                 |  14 +++
   9  arch/arm/boot/dts/overlays/piscreen2r-overlay.dts | 100 ++++++++++++++++++++++
  10  3 files changed, 115 insertions(+)
  11  create mode 100644 arch/arm/boot/dts/overlays/piscreen2r-overlay.dts
  12
  13 --- a/arch/arm/boot/dts/overlays/Makefile
  14 +++ b/arch/arm/boot/dts/overlays/Makefile
  15 @@ -35,6 +35,7 @@ dtb-$(RPI_DT_OVERLAYS) += mcp2515-can1-o
  16  dtb-$(RPI_DT_OVERLAYS) += mmc-overlay.dtb
  17  dtb-$(RPI_DT_OVERLAYS) += mz61581-overlay.dtb
  18  dtb-$(RPI_DT_OVERLAYS) += piscreen-overlay.dtb
  19 +dtb-$(RPI_DT_OVERLAYS) += piscreen2r-overlay.dtb
  20  dtb-$(RPI_DT_OVERLAYS) += pitft28-resistive-overlay.dtb
  21  dtb-$(RPI_DT_OVERLAYS) += pps-gpio-overlay.dtb
  22  dtb-$(RPI_DT_OVERLAYS) += pwm-overlay.dtb
  23 --- a/arch/arm/boot/dts/overlays/README
  24 +++ b/arch/arm/boot/dts/overlays/README
  25 @@ -425,6 +425,20 @@ Params: speed                    Display
  26          xohms                    Touchpanel sensitivity (X-plate resistance)
  27
  28
  29 +Name:   piscreen2r
  30 +Info:   PiScreen 2 with resistive TP display by OzzMaker.com
  31 +Load:   dtoverlay=piscreen2r,<param>=<val>
  32 +Params: speed                    Display SPI bus speed
  33 +
  34 +        rotate                   Display rotation {0,90,180,270}
  35 +
  36 +        fps                      Delay between frame updates
  37 +
  38 +        debug                    Debug output level {0-7}
  39 +
  40 +        xohms                    Touchpanel sensitivity (X-plate resistance)
  41 +
  42 +
  43  Name:   pitft28-resistive
  44  Info:   Adafruit PiTFT 2.8" resistive touch screen
  45  Load:   dtoverlay=pitft28-resistive,<param>=<val>
  46 --- /dev/null
  47 +++ b/arch/arm/boot/dts/overlays/piscreen2r-overlay.dts
  48 @@ -0,0 +1,100 @@
  49 + /*
  50 + * Device Tree overlay for PiScreen2 3.5" TFT with resistive touch  by Ozzmaker.com
  51 + *
  52 + */
  53 +
  54 +/dts-v1/;
  55 +/plugin/;
  56 +
  57 +/ {
  58 +       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
  59 +
  60 +       fragment@0 {
  61 +               target = <&spi0>;
  62 +               __overlay__ {
  63 +                       status = "okay";
  64 +
  65 +                       spidev@0{
  66 +                               status = "disabled";
  67 +                       };
  68 +
  69 +                       spidev@1{
  70 +                               status = "disabled";
  71 +                       };
  72 +               };
  73 +       };
  74 +
  75 +       fragment@1 {
  76 +               target = <&gpio>;
  77 +               __overlay__ {
  78 +                       piscreen2_pins: piscreen2_pins {
  79 +                               brcm,pins = <17 25 24 22>;
  80 +                               brcm,function = <0 1 1 1>; /* in out out out */
  81 +                       };
  82 +               };
  83 +       };
  84 +
  85 +       fragment@2 {
  86 +               target = <&spi0>;
  87 +               __overlay__ {
  88 +                       /* needed to avoid dtc warning */
  89 +                       #address-cells = <1>;
  90 +                       #size-cells = <0>;
  91 +
  92 +                       piscreen2: piscreen2@0{
  93 +                               compatible = "ilitek,ili9486";
  94 +                               reg = <0>;
  95 +                               pinctrl-names = "default";
  96 +                               pinctrl-0 = <&piscreen2_pins>;
  97 +                               bgr;
  98 +                               spi-max-frequency = <64000000>;
  99 +                               rotate = <90>;
 100 +                               fps = <30>;
 101 +                               buswidth = <8>;
 102 +                               regwidth = <16>;
 103 +                               txbuflen = <32768>;
 104 +                               reset-gpios = <&gpio 25 0>;
 105 +                               dc-gpios = <&gpio 24 0>;
 106 +                               led-gpios = <&gpio 22 1>;
 107 +                               debug = <0>;
 108 +
 109 +                                init = <0x10000b0 0x00
 110 +                                        0x1000011
 111 +                                        0x20000ff
 112 +                                        0x100003a 0x55
 113 +                                        0x1000036 0x28
 114 +                                        0x10000c0 0x11 0x09
 115 +                                        0x10000c1 0x41
 116 +                                        0x10000c5 0x00 0x00 0x00 0x00
 117 +                                        0x10000b6 0x00 0x02
 118 +                                        0x10000f7 0xa9 0x51 0x2c 0x2
 119 +                                        0x10000be 0x00 0x04
 120 +                                        0x10000e9 0x00
 121 +                                        0x1000011
 122 +                                        0x1000029>;
 123 +
 124 +                       };
 125 +
 126 +                       piscreen2_ts: piscreen2-ts@1 {
 127 +                               compatible = "ti,ads7846";
 128 +                               reg = <1>;
 129 +
 130 +                               spi-max-frequency = <2000000>;
 131 +                               interrupts = <17 2>; /* high-to-low edge triggered */
 132 +                               interrupt-parent = <&gpio>;
 133 +                               pendown-gpio = <&gpio 17 0>;
 134 +                               ti,swap-xy;
 135 +                               ti,x-plate-ohms = /bits/ 16 <100>;
 136 +                               ti,pressure-max = /bits/ 16 <255>;
 137 +                       };
 138 +               };
 139 +       };
 140 +       __overrides__ {
 141 +               speed =         <&piscreen2>,"spi-max-frequency:0";
 142 +               rotate =        <&piscreen2>,"rotate:0";
 143 +               fps =           <&piscreen2>,"fps:0";
 144 +               debug =         <&piscreen2>,"debug:0";
 145 +               xohms =         <&piscreen2_ts>,"ti,x-plate-ohms;0";
 146 +       };
 147 +};
 148 +