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

From 6c6596610381249719e87e324a9689cabc2a7cd8 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.com>
Date: Thu, 18 Feb 2021 21:05:44 +0000
Subject: [PATCH] overlays: Add minipitft13 overlay

minipitft13 is an overlay for the Adafruit 1.3" 240x240 display
(code 4484).

See: https://github.com/raspberrypi/firmware/issues/1524

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
---
 arch/arm/boot/dts/overlays/Makefile           |  1 +
 .../boot/dts/overlays/minipitft13-overlay.dts | 70 +++++++++++++++++++
 2 files changed, 71 insertions(+)
 create mode 100644 arch/arm/boot/dts/overlays/minipitft13-overlay.dts

--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -119,6 +119,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
 	merus-amp.dtbo \
 	midi-uart0.dtbo \
 	midi-uart1.dtbo \
+	minipitft13.dtbo \
 	miniuart-bt.dtbo \
 	mmc.dtbo \
 	mpu6050.dtbo \
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/minipitft13-overlay.dts
@@ -0,0 +1,70 @@
+/*
+ * Device Tree overlay for Adafruit Mini PiTFT 1.3" and 1.5" 240x240 Display
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+        compatible = "brcm,bcm2835";
+
+        fragment@0 {
+                target = <&spi0>;
+                __overlay__ {
+                        status = "okay";
+
+                        spidev@0{
+                                status = "disabled";
+                        };
+
+                        spidev@1{
+                                status = "disabled";
+                        };
+                };
+        };
+
+        fragment@1 {
+                target = <&gpio>;
+                __overlay__ {
+                        pitft_pins: pitft_pins {
+                                brcm,pins = <25>;
+                                brcm,function = <1>; /* out */
+                                brcm,pull = <0>; /* none */
+                        };
+                };
+        };
+
+        fragment@2 {
+                target = <&spi0>;
+                __overlay__ {
+                        /* needed to avoid dtc warning */
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        pitft: pitft@0 {
+                                compatible = "fbtft,minipitft13";
+                                reg = <0>;
+                                pinctrl-names = "default";
+                                pinctrl-0 = <&pitft_pins>;
+                                spi-max-frequency = <32000000>;
+                                rotate = <0>;
+                                width = <240>;
+                                height = <240>;
+                                buswidth = <8>;
+                                dc-gpios = <&gpio 25 0>;
+                                led-gpios = <&gpio 26 0>;
+                                debug = <0>;
+                        };
+                };
+        };
+
+        __overrides__ {
+                speed =   <&pitft>,"spi-max-frequency:0";
+                rotate =  <&pitft>,"rotate:0";
+                width =   <&pitft>,"width:0";
+                height =  <&pitft>,"height:0";
+                fps =     <&pitft>,"fps:0";
+                debug =   <&pitft>,"debug:0";
+        };
+};