target/linux/brcm2708/patches-4.14/950-0143-overlays-Add-media-center-HAT-overlay-2313.patch

   1 From 15aa7a1d49c20f7f41b5c69cea2f46e1e976e660 Mon Sep 17 00:00:00 2001
   2 From: Aaron Shaw <shawaj@gmail.com>
   3 Date: Sun, 24 Dec 2017 21:57:05 +0000
   4 Subject: [PATCH 143/454] overlays: Add media center HAT overlay (#2313)
   5
   6 ---
   7  arch/arm/boot/dts/overlays/Makefile           |   1 +
   8  arch/arm/boot/dts/overlays/README             |  24 ++++
   9  .../dts/overlays/media-center-overlay.dts     | 132 ++++++++++++++++++
  10  3 files changed, 157 insertions(+)
  11  create mode 100644 arch/arm/boot/dts/overlays/media-center-overlay.dts
  12
  13 --- a/arch/arm/boot/dts/overlays/Makefile
  14 +++ b/arch/arm/boot/dts/overlays/Makefile
  15 @@ -61,6 +61,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  16         mcp2515-can0.dtbo \
  17         mcp2515-can1.dtbo \
  18         mcp3008.dtbo \
  19 +       media-center.dtbo \
  20         midi-uart0.dtbo \
  21         midi-uart1.dtbo \
  22         mmc.dtbo \
  23 --- a/arch/arm/boot/dts/overlays/README
  24 +++ b/arch/arm/boot/dts/overlays/README
  25 @@ -994,6 +994,30 @@ Params: spi<n>-<m>-present      boolean,
  26          spi<n>-<m>-speed        integer, set the spi bus speed for this device
  27
  28
  29 +Name:   media-center
  30 +Info:   Media Center HAT - 2.83" Touch Display + extras by Pi Supply
  31 +Load:   dtoverlay=media-center,<param>=<val>
  32 +Params: speed                   Display SPI bus speed
  33 +        rotate                  Display rotation {0,90,180,270}
  34 +        fps                     Delay between frame updates
  35 +        xohms                   Touchpanel sensitivity (X-plate resistance)
  36 +        swapxy                  Swap x and y axis
  37 +        gpio_out_pin            GPIO for output (default "17")
  38 +        gpio_in_pin             GPIO for input (default "18")
  39 +        gpio_in_pull            Pull up/down/off on the input pin
  40 +                                (default "down")
  41 +        sense                   Override the IR receive auto-detection logic:
  42 +                                 "0" = force active-high
  43 +                                 "1" = force active-low
  44 +                                 "-1" = use auto-detection
  45 +                                (default "-1")
  46 +        softcarrier             Turn the software carrier "on" or "off"
  47 +                                (default "on")
  48 +        invert                  "on" = invert the output pin (default "off")
  49 +        debug                   "on" = enable additional debug messages
  50 +                                (default "off")
  51 +
  52 +
  53  Name:   midi-uart0
  54  Info:   Configures UART0 (ttyAMA0) so that a requested 38.4kbaud actually gets
  55          31.25kbaud, the frequency required for MIDI
  56 --- /dev/null
  57 +++ b/arch/arm/boot/dts/overlays/media-center-overlay.dts
  58 @@ -0,0 +1,132 @@
  59 +/*
  60 + * Device Tree overlay for Media Center HAT by Pi Supply
  61 + *
  62 + */
  63 +
  64 +/dts-v1/;
  65 +/plugin/;
  66 +
  67 +/ {
  68 +       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
  69 +
  70 +       fragment@0 {
  71 +               target = <&spi0>;
  72 +               __overlay__ {
  73 +                       status = "okay";
  74 +
  75 +                       spidev@0{
  76 +                               status = "disabled";
  77 +                       };
  78 +
  79 +                       spidev@1{
  80 +                               status = "disabled";
  81 +                       };
  82 +               };
  83 +       };
  84 +
  85 +       fragment@1 {
  86 +               target = <&gpio>;
  87 +               __overlay__ {
  88 +                       rpi_display_pins: rpi_display_pins {
  89 +                               brcm,pins = <12 23 24 25>;
  90 +                               brcm,function = <1 1 1 0>; /* out out out in */
  91 +                               brcm,pull = <0 0 0 2>; /* - - - up */
  92 +                       };
  93 +               };
  94 +       };
  95 +
  96 +       fragment@2 {
  97 +               target = <&spi0>;
  98 +               __overlay__ {
  99 +                       /* needed to avoid dtc warning */
 100 +                       #address-cells = <1>;
 101 +                       #size-cells = <0>;
 102 +
 103 +                       rpidisplay: rpi-display@0{
 104 +                               compatible = "ilitek,ili9341";
 105 +                               reg = <0>;
 106 +                               pinctrl-names = "default";
 107 +                               pinctrl-0 = <&rpi_display_pins>;
 108 +
 109 +                               spi-max-frequency = <32000000>;
 110 +                               rotate = <90>;
 111 +                               bgr;
 112 +                               fps = <30>;
 113 +                               buswidth = <8>;
 114 +                               reset-gpios = <&gpio 23 0>;
 115 +                               dc-gpios = <&gpio 24 0>;
 116 +                               led-gpios = <&gpio 12 1>;
 117 +                               debug = <0>;
 118 +                       };
 119 +
 120 +                       rpidisplay_ts: rpi-display-ts@1 {
 121 +                               compatible = "ti,ads7846";
 122 +                               reg = <1>;
 123 +
 124 +                               spi-max-frequency = <2000000>;
 125 +                               interrupts = <25 2>; /* high-to-low edge triggered */
 126 +                               interrupt-parent = <&gpio>;
 127 +                               pendown-gpio = <&gpio 25 0>;
 128 +                               ti,x-plate-ohms = /bits/ 16 <60>;
 129 +                               ti,pressure-max = /bits/ 16 <255>;
 130 +                       };
 131 +               };
 132 +       };
 133 +
 134 +       fragment@3 {
 135 +               target-path = "/";
 136 +               __overlay__ {
 137 +                       lirc_rpi: lirc_rpi {
 138 +                               compatible = "rpi,lirc-rpi";
 139 +                               pinctrl-names = "default";
 140 +                               pinctrl-0 = <&lirc_pins>;
 141 +                               status = "okay";
 142 +
 143 +                               // Override autodetection of IR receiver circuit
 144 +                               // (0 = active high, 1 = active low, -1 = no override )
 145 +                               rpi,sense = <0xffffffff>;
 146 +
 147 +                               // Software carrier
 148 +                               // (0 = off, 1 = on)
 149 +                               rpi,softcarrier = <1>;
 150 +
 151 +                               // Invert output
 152 +                               // (0 = off, 1 = on)
 153 +                               rpi,invert = <0>;
 154 +
 155 +                               // Enable debugging messages
 156 +                               // (0 = off, 1 = on)
 157 +                               rpi,debug = <0>;
 158 +                       };
 159 +               };
 160 +       };
 161 +
 162 +       fragment@4 {
 163 +               target = <&gpio>;
 164 +               __overlay__ {
 165 +                       lirc_pins: lirc_pins {
 166 +                               brcm,pins = <6 5>;
 167 +                               brcm,function = <1 0>; // out in
 168 +                               brcm,pull = <0 1>; // off down
 169 +                       };
 170 +               };
 171 +       };
 172 +
 173 +       __overrides__ {
 174 +               speed =   <&rpidisplay>,"spi-max-frequency:0";
 175 +               rotate =  <&rpidisplay>,"rotate:0";
 176 +               fps =     <&rpidisplay>,"fps:0";
 177 +               debug =   <&rpidisplay>,"debug:0",
 178 +                         <&lirc_rpi>,"rpi,debug:0";
 179 +               xohms =   <&rpidisplay_ts>,"ti,x-plate-ohms;0";
 180 +               swapxy =  <&rpidisplay_ts>,"ti,swap-xy?";
 181 +
 182 +               gpio_out_pin =  <&lirc_pins>,"brcm,pins:0";
 183 +               gpio_in_pin =   <&lirc_pins>,"brcm,pins:4";
 184 +               gpio_in_pull =  <&lirc_pins>,"brcm,pull:4";
 185 +
 186 +               sense =         <&lirc_rpi>,"rpi,sense:0";
 187 +               softcarrier =   <&lirc_rpi>,"rpi,softcarrier:0";
 188 +               invert =        <&lirc_rpi>,"rpi,invert:0";
 189 +       };
 190 +};