target/linux/bcm27xx/patches-6.1/950-0835-dtoverlays-Add-drm-option-to-piscreen-overlay.patch

   1 From 5e54398e1b61335883dff1be46a6c8b3ca973926 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Wed, 30 Aug 2023 18:03:37 +0100
   4 Subject: [PATCH] dtoverlays: Add drm option to piscreen overlay
   5
   6 Adds the option of selecting the DRM/KMS TinyDRM driver for
   7 this panel, rather than the deprecated FBTFT one.
   8
   9 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  10 ---
  11  arch/arm/boot/dts/overlays/README               |  3 +++
  12  arch/arm/boot/dts/overlays/piscreen-overlay.dts | 10 +++++++---
  13  2 files changed, 10 insertions(+), 3 deletions(-)
  14
  15 --- a/arch/arm/boot/dts/overlays/README
  16 +++ b/arch/arm/boot/dts/overlays/README
  17 @@ -3245,6 +3245,9 @@ Params: speed                   Display
  18
  19          xohms                   Touchpanel sensitivity (X-plate resistance)
  20
  21 +        drm                     Select the DRM/KMS driver instead of the FBTFT
  22 +                                one
  23 +
  24
  25  Name:   piscreen2r
  26  Info:   PiScreen 2 with resistive TP display by OzzMaker.com
  27 --- a/arch/arm/boot/dts/overlays/piscreen-overlay.dts
  28 +++ b/arch/arm/boot/dts/overlays/piscreen-overlay.dts
  29 @@ -6,6 +6,8 @@
  30  /dts-v1/;
  31  /plugin/;
  32
  33 +#include <dt-bindings/gpio/gpio.h>
  34 +
  35  / {
  36         compatible = "brcm,bcm2835";
  37
  38 @@ -59,9 +61,9 @@
  39                                 fps = <30>;
  40                                 buswidth = <8>;
  41                                 regwidth = <16>;
  42 -                               reset-gpios = <&gpio 25 1>;
  43 -                               dc-gpios = <&gpio 24 0>;
  44 -                               led-gpios = <&gpio 22 0>;
  45 +                               reset-gpios = <&gpio 25 GPIO_ACTIVE_LOW>;
  46 +                               dc-gpios = <&gpio 24 GPIO_ACTIVE_HIGH>;
  47 +                               led-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
  48                                 debug = <0>;
  49
  50                                 init = <0x10000b0 0x00
  51 @@ -98,5 +100,7 @@
  52                 fps =           <&piscreen>,"fps:0";
  53                 debug =         <&piscreen>,"debug:0";
  54                 xohms =         <&piscreen_ts>,"ti,x-plate-ohms;0";
  55 +               drm =           <&piscreen>,"compatible=waveshare,rpi-lcd-35",
  56 +                               <&piscreen>,"reset-gpios:8=",<GPIO_ACTIVE_HIGH>;
  57         };
  58  };