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From d2ecf44fbe03bd988a608473d5b515d21fab8950 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Petter=20Mab=C3=A4cker?= <petter@technux.se>
Date: Fri, 8 Jan 2016 09:02:44 +0100
Subject: [PATCH] dts: add overlay for pitft22
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Add the pitft22 overlay from adafruit Adafruit-Pi-Kernel-o-Matic repo:
https://github.com/adafruit/Adafruit-Pi-Kernel-o-Matic
Signed-off-by: Petter Mabäcker <petter@technux.se>
Signed-off-by: Andrei Gherzan <andrei@resin.io>
---
arch/arm/boot/dts/overlays/Makefile | 1 +
arch/arm/boot/dts/overlays/README | 12 +++++
arch/arm/boot/dts/overlays/pitft22-overlay.dts | 69 ++++++++++++++++++++++++++
3 files changed, 82 insertions(+)
create mode 100644 arch/arm/boot/dts/overlays/pitft22-overlay.dts
--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -51,6 +51,7 @@ dtbo-$(RPI_DT_OVERLAYS) += pi3-disable-b
dtbo-$(RPI_DT_OVERLAYS) += pi3-miniuart-bt.dtbo
dtbo-$(RPI_DT_OVERLAYS) += piscreen.dtbo
dtbo-$(RPI_DT_OVERLAYS) += piscreen2r.dtbo
+dtbo-$(RPI_DT_OVERLAYS) += pitft22.dtbo
dtbo-$(RPI_DT_OVERLAYS) += pitft28-capacitive.dtbo
dtbo-$(RPI_DT_OVERLAYS) += pitft28-resistive.dtbo
dtbo-$(RPI_DT_OVERLAYS) += pps-gpio.dtbo
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -644,6 +644,18 @@ Params: speed Display
xohms Touchpanel sensitivity (X-plate resistance)
+Name: pitft22
+Info: Adafruit PiTFT 2.2" screen
+Load: dtoverlay=pitft22,<param>=<val>
+Params: speed Display SPI bus speed
+
+ rotate Display rotation {0,90,180,270}
+
+ fps Delay between frame updates
+
+ debug Debug output level {0-7}
+
+
Name: pitft28-capacitive
Info: Adafruit PiTFT 2.8" capacitive touch screen
Load: dtoverlay=pitft28-capacitive,<param>=<val>
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/pitft22-overlay.dts
@@ -0,0 +1,69 @@
+/*
+ * Device Tree overlay for pitft by Adafruit
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+ 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 = "ilitek,ili9340";
+ reg = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pitft_pins>;
+
+ spi-max-frequency = <32000000>;
+ rotate = <90>;
+ fps = <25>;
+ bgr;
+ buswidth = <8>;
+ dc-gpios = <&gpio 25 0>;
+ debug = <0>;
+ };
+
+ };
+ };
+
+ __overrides__ {
+ speed = <&pitft>,"spi-max-frequency:0";
+ rotate = <&pitft>,"rotate:0";
+ fps = <&pitft>,"fps:0";
+ debug = <&pitft>,"debug:0";
+ };
+};
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