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From 5e54398e1b61335883dff1be46a6c8b3ca973926 Mon Sep 17 00:00:00 2001
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
Date: Wed, 30 Aug 2023 18:03:37 +0100
Subject: [PATCH] dtoverlays: Add drm option to piscreen overlay
Adds the option of selecting the DRM/KMS TinyDRM driver for
this panel, rather than the deprecated FBTFT one.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
---
arch/arm/boot/dts/overlays/README | 3 +++
arch/arm/boot/dts/overlays/piscreen-overlay.dts | 10 +++++++---
2 files changed, 10 insertions(+), 3 deletions(-)
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -3245,6 +3245,9 @@ Params: speed Display
xohms Touchpanel sensitivity (X-plate resistance)
+ drm Select the DRM/KMS driver instead of the FBTFT
+ one
+
Name: piscreen2r
Info: PiScreen 2 with resistive TP display by OzzMaker.com
--- a/arch/arm/boot/dts/overlays/piscreen-overlay.dts
+++ b/arch/arm/boot/dts/overlays/piscreen-overlay.dts
@@ -6,6 +6,8 @@
/dts-v1/;
/plugin/;
+#include <dt-bindings/gpio/gpio.h>
+
/ {
compatible = "brcm,bcm2835";
@@ -59,9 +61,9 @@
fps = <30>;
buswidth = <8>;
regwidth = <16>;
- reset-gpios = <&gpio 25 1>;
- dc-gpios = <&gpio 24 0>;
- led-gpios = <&gpio 22 0>;
+ reset-gpios = <&gpio 25 GPIO_ACTIVE_LOW>;
+ dc-gpios = <&gpio 24 GPIO_ACTIVE_HIGH>;
+ led-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
debug = <0>;
init = <0x10000b0 0x00
@@ -98,5 +100,7 @@
fps = <&piscreen>,"fps:0";
debug = <&piscreen>,"debug:0";
xohms = <&piscreen_ts>,"ti,x-plate-ohms;0";
+ drm = <&piscreen>,"compatible=waveshare,rpi-lcd-35",
+ <&piscreen>,"reset-gpios:8=",<GPIO_ACTIVE_HIGH>;
};
};
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