target/linux/bcm27xx/patches-5.4/950-0961-overlays-Add-adafruit18-and-sainsmart18-overlays.patch

   1 From dde4afa87452e8499c611c9a889f4c5f35d9e2bb Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.com>
   3 Date: Thu, 3 Sep 2020 17:36:00 +0100
   4 Subject: [PATCH] overlays: Add adafruit18 and sainsmart18 overlays
   5
   6 Add support for three ST7735R-based displays - adafruit18,
   7 adafruit18_green and sainsmart18.
   8
   9 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
  10 ---
  11  arch/arm/boot/dts/overlays/Makefile           |  2 +
  12  arch/arm/boot/dts/overlays/README             | 15 ++++++
  13  .../boot/dts/overlays/adafruit18-overlay.dts  | 49 +++++++++++++++++++
  14  .../boot/dts/overlays/sainsmart18-overlay.dts | 47 ++++++++++++++++++
  15  4 files changed, 113 insertions(+)
  16  create mode 100644 arch/arm/boot/dts/overlays/adafruit18-overlay.dts
  17  create mode 100644 arch/arm/boot/dts/overlays/sainsmart18-overlay.dts
  18
  19 --- a/arch/arm/boot/dts/overlays/Makefile
  20 +++ b/arch/arm/boot/dts/overlays/Makefile
  21 @@ -4,6 +4,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += overlay_ma
  22
  23  dtbo-$(CONFIG_ARCH_BCM2835) += \
  24         act-led.dtbo \
  25 +       adafruit18.dtbo \
  26         adau1977-adc.dtbo \
  27         adau7002-simple.dtbo \
  28         ads1015.dtbo \
  29 @@ -147,6 +148,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  30         rpi-tv.dtbo \
  31         rpivid-v4l2.dtbo \
  32         rra-digidac1-wm8741-audio.dtbo \
  33 +       sainsmart18.dtbo \
  34         sc16is750-i2c.dtbo \
  35         sc16is752-i2c.dtbo \
  36         sc16is752-spi0.dtbo \
  37 --- a/arch/arm/boot/dts/overlays/README
  38 +++ b/arch/arm/boot/dts/overlays/README
  39 @@ -261,6 +261,14 @@ Params: activelow               Set to "
  40                                  REQUIRED
  41
  42
  43 +Name:   adafruit18
  44 +Info:   Overlay for the SPI-connected Adafruit 1.8" display (based on the
  45 +        ST7735R chip). It includes support for the "green tab" version.
  46 +Load:   dtoverlay=adafruit18,<param>=<val>
  47 +Params: green                   Use the adafruit18_green variant.
  48 +        rotate                  Display rotation {0,90,180,270}
  49 +
  50 +
  51  Name:   adau1977-adc
  52  Info:   Overlay for activation of ADAU1977 ADC codec over I2C for control
  53          and I2S for data.
  54 @@ -2251,6 +2259,13 @@ Load:   dtoverlay=rra-digidac1-wm8741-au
  55  Params: <None>
  56
  57
  58 +Name:   sainsmart18
  59 +Info:   Overlay for the SPI-connected Sainsmart 1.8" display (based on the
  60 +        ST7735R chip).
  61 +Load:   dtoverlay=sainsmart18,<param>=<val>
  62 +Params: rotate                  Display rotation {0,90,180,270}
  63 +
  64 +
  65  Name:   sc16is750-i2c
  66  Info:   Overlay for the NXP SC16IS750 UART with I2C Interface
  67          Enables the chip on I2C1 at 0x48 (or the "addr" parameter value). To
  68 --- /dev/null
  69 +++ b/arch/arm/boot/dts/overlays/adafruit18-overlay.dts
  70 @@ -0,0 +1,49 @@
  71 +/*
  72 + * Device Tree overlay for Adafruit 1.8" TFT LCD with ST7735R chip 160x128
  73 + */
  74 +
  75 +/dts-v1/;
  76 +/plugin/;
  77 +
  78 +/ {
  79 +       compatible = "brcm,bcm2835";
  80 +
  81 +       fragment@0 {
  82 +               target = <&spidev0>;
  83 +               __overlay__ {
  84 +                       status = "disabled";
  85 +               };
  86 +       };
  87 +
  88 +       fragment@1 {
  89 +               target = <&spi0>;
  90 +               __overlay__ {
  91 +                       /* needed to avoid dtc warning */
  92 +                       #address-cells = <1>;
  93 +                       #size-cells = <0>;
  94 +                       status = "okay";
  95 +
  96 +                       af18: adafruit18@0 {
  97 +                               compatible = "fbtft,adafruit18";
  98 +                               reg = <0>;
  99 +                               pinctrl-names = "default";
 100 +                               spi-max-frequency = <40000000>;
 101 +                               rotate = <90>;
 102 +                               buswidth = <8>;
 103 +                               fps = <50>;
 104 +                               height = <160>;
 105 +                               width = <128>;
 106 +                               reset-gpios = <&gpio 25 0>;
 107 +                               dc-gpios = <&gpio 24 0>;
 108 +                               led-gpios = <&gpio 18 0>;
 109 +                               bgr;
 110 +                               debug = <0>;
 111 +                       };
 112 +               };
 113 +       };
 114 +
 115 +       __overrides__ {
 116 +               green = <&af18>, "compatible=fbtft,adafruit18_green";
 117 +               rotate = <&af18>, "rotate:0";
 118 +       };
 119 +};
 120 --- /dev/null
 121 +++ b/arch/arm/boot/dts/overlays/sainsmart18-overlay.dts
 122 @@ -0,0 +1,47 @@
 123 +/*
 124 + * Device Tree overlay for the Sainsmart 1.8" TFT LCD with ST7735R chip 160x128
 125 + */
 126 +
 127 +/dts-v1/;
 128 +/plugin/;
 129 +
 130 +/ {
 131 +       compatible = "brcm,bcm2835";
 132 +
 133 +       fragment@0 {
 134 +               target = <&spidev0>;
 135 +               __overlay__ {
 136 +                       status = "disabled";
 137 +               };
 138 +       };
 139 +
 140 +       fragment@1 {
 141 +               target = <&spi0>;
 142 +               __overlay__ {
 143 +                       /* needed to avoid dtc warning */
 144 +                       #address-cells = <1>;
 145 +                       #size-cells = <0>;
 146 +                       status = "okay";
 147 +
 148 +                       ss18: sainsmart18@0 {
 149 +                               compatible = "fbtft,sainsmart18";
 150 +                               reg = <0>;
 151 +                               pinctrl-names = "default";
 152 +                               spi-max-frequency = <40000000>;
 153 +                               rotate = <90>;
 154 +                               buswidth = <8>;
 155 +                               fps = <50>;
 156 +                               height = <160>;
 157 +                               width = <128>;
 158 +                               reset-gpios = <&gpio 25 0>;
 159 +                               dc-gpios = <&gpio 24 0>;
 160 +                               bgr;
 161 +                               debug = <0>;
 162 +                       };
 163 +               };
 164 +       };
 165 +
 166 +       __overrides__ {
 167 +               rotate = <&ss18>, "rotate:0";
 168 +       };
 169 +};