target/linux/bcm27xx/patches-5.10/950-0518-overlays-Add-minipitft13-overlay.patch

   1 From 6c6596610381249719e87e324a9689cabc2a7cd8 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.com>
   3 Date: Thu, 18 Feb 2021 21:05:44 +0000
   4 Subject: [PATCH] overlays: Add minipitft13 overlay
   5
   6 minipitft13 is an overlay for the Adafruit 1.3" 240x240 display
   7 (code 4484).
   8
   9 See: https://github.com/raspberrypi/firmware/issues/1524
  10
  11 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
  12 ---
  13  arch/arm/boot/dts/overlays/Makefile           |  1 +
  14  .../boot/dts/overlays/minipitft13-overlay.dts | 70 +++++++++++++++++++
  15  2 files changed, 71 insertions(+)
  16  create mode 100644 arch/arm/boot/dts/overlays/minipitft13-overlay.dts
  17
  18 --- a/arch/arm/boot/dts/overlays/Makefile
  19 +++ b/arch/arm/boot/dts/overlays/Makefile
  20 @@ -119,6 +119,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  21         merus-amp.dtbo \
  22         midi-uart0.dtbo \
  23         midi-uart1.dtbo \
  24 +       minipitft13.dtbo \
  25         miniuart-bt.dtbo \
  26         mmc.dtbo \
  27         mpu6050.dtbo \
  28 --- /dev/null
  29 +++ b/arch/arm/boot/dts/overlays/minipitft13-overlay.dts
  30 @@ -0,0 +1,70 @@
  31 +/*
  32 + * Device Tree overlay for Adafruit Mini PiTFT 1.3" and 1.5" 240x240 Display
  33 + *
  34 + */
  35 +
  36 +/dts-v1/;
  37 +/plugin/;
  38 +
  39 +/ {
  40 +        compatible = "brcm,bcm2835";
  41 +
  42 +        fragment@0 {
  43 +                target = <&spi0>;
  44 +                __overlay__ {
  45 +                        status = "okay";
  46 +
  47 +                        spidev@0{
  48 +                                status = "disabled";
  49 +                        };
  50 +
  51 +                        spidev@1{
  52 +                                status = "disabled";
  53 +                        };
  54 +                };
  55 +        };
  56 +
  57 +        fragment@1 {
  58 +                target = <&gpio>;
  59 +                __overlay__ {
  60 +                        pitft_pins: pitft_pins {
  61 +                                brcm,pins = <25>;
  62 +                                brcm,function = <1>; /* out */
  63 +                                brcm,pull = <0>; /* none */
  64 +                        };
  65 +                };
  66 +        };
  67 +
  68 +        fragment@2 {
  69 +                target = <&spi0>;
  70 +                __overlay__ {
  71 +                        /* needed to avoid dtc warning */
  72 +                        #address-cells = <1>;
  73 +                        #size-cells = <0>;
  74 +
  75 +                        pitft: pitft@0 {
  76 +                                compatible = "fbtft,minipitft13";
  77 +                                reg = <0>;
  78 +                                pinctrl-names = "default";
  79 +                                pinctrl-0 = <&pitft_pins>;
  80 +                                spi-max-frequency = <32000000>;
  81 +                                rotate = <0>;
  82 +                                width = <240>;
  83 +                                height = <240>;
  84 +                                buswidth = <8>;
  85 +                                dc-gpios = <&gpio 25 0>;
  86 +                                led-gpios = <&gpio 26 0>;
  87 +                                debug = <0>;
  88 +                        };
  89 +                };
  90 +        };
  91 +
  92 +        __overrides__ {
  93 +                speed =   <&pitft>,"spi-max-frequency:0";
  94 +                rotate =  <&pitft>,"rotate:0";
  95 +                width =   <&pitft>,"width:0";
  96 +                height =  <&pitft>,"height:0";
  97 +                fps =     <&pitft>,"fps:0";
  98 +                debug =   <&pitft>,"debug:0";
  99 +        };
 100 +};