2016-09-10 12:54:26 +00:00
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From 1e78b98d827b57373b0a984af0ceb21e576b6037 Mon Sep 17 00:00:00 2001
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2016-01-17 10:42:23 +00:00
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From: mwilliams03 <mark.mwilliams@gmail.com>
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Date: Sun, 18 Oct 2015 17:07:24 -0700
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2016-09-10 12:54:26 +00:00
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Subject: [PATCH] New overlay for PiScreen2r
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2016-01-17 10:42:23 +00:00
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---
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arch/arm/boot/dts/overlays/Makefile | 1 +
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arch/arm/boot/dts/overlays/README | 14 +++
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arch/arm/boot/dts/overlays/piscreen2r-overlay.dts | 100 ++++++++++++++++++++++
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3 files changed, 115 insertions(+)
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create mode 100644 arch/arm/boot/dts/overlays/piscreen2r-overlay.dts
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--- a/arch/arm/boot/dts/overlays/Makefile
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+++ b/arch/arm/boot/dts/overlays/Makefile
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@@ -35,6 +35,7 @@ dtb-$(RPI_DT_OVERLAYS) += mcp2515-can1-o
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dtb-$(RPI_DT_OVERLAYS) += mmc-overlay.dtb
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dtb-$(RPI_DT_OVERLAYS) += mz61581-overlay.dtb
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dtb-$(RPI_DT_OVERLAYS) += piscreen-overlay.dtb
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+dtb-$(RPI_DT_OVERLAYS) += piscreen2r-overlay.dtb
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dtb-$(RPI_DT_OVERLAYS) += pitft28-resistive-overlay.dtb
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dtb-$(RPI_DT_OVERLAYS) += pps-gpio-overlay.dtb
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dtb-$(RPI_DT_OVERLAYS) += pwm-overlay.dtb
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -425,6 +425,20 @@ Params: speed Display
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xohms Touchpanel sensitivity (X-plate resistance)
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+Name: piscreen2r
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+Info: PiScreen 2 with resistive TP display by OzzMaker.com
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+Load: dtoverlay=piscreen2r,<param>=<val>
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+Params: speed Display SPI bus speed
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+
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+ rotate Display rotation {0,90,180,270}
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+
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+ fps Delay between frame updates
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+
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+ debug Debug output level {0-7}
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+
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+ xohms Touchpanel sensitivity (X-plate resistance)
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+
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+
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Name: pitft28-resistive
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Info: Adafruit PiTFT 2.8" resistive touch screen
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Load: dtoverlay=pitft28-resistive,<param>=<val>
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/piscreen2r-overlay.dts
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@@ -0,0 +1,100 @@
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+ /*
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+ * Device Tree overlay for PiScreen2 3.5" TFT with resistive touch by Ozzmaker.com
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+ *
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+ */
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+
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+/dts-v1/;
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+/plugin/;
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+
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+/ {
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+ compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
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+
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+ fragment@0 {
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+ target = <&spi0>;
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+ __overlay__ {
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+ status = "okay";
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+
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+ spidev@0{
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+ status = "disabled";
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+ };
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+
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+ spidev@1{
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+ status = "disabled";
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+ };
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+ };
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+ };
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+
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+ fragment@1 {
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+ target = <&gpio>;
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+ __overlay__ {
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+ piscreen2_pins: piscreen2_pins {
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+ brcm,pins = <17 25 24 22>;
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+ brcm,function = <0 1 1 1>; /* in out out out */
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+ };
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+ };
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+ };
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+
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+ fragment@2 {
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+ target = <&spi0>;
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+ __overlay__ {
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+ /* needed to avoid dtc warning */
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+
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+ piscreen2: piscreen2@0{
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+ compatible = "ilitek,ili9486";
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+ reg = <0>;
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+ pinctrl-names = "default";
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+ pinctrl-0 = <&piscreen2_pins>;
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+ bgr;
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+ spi-max-frequency = <64000000>;
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+ rotate = <90>;
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+ fps = <30>;
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+ buswidth = <8>;
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+ regwidth = <16>;
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+ txbuflen = <32768>;
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+ reset-gpios = <&gpio 25 0>;
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+ dc-gpios = <&gpio 24 0>;
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+ led-gpios = <&gpio 22 1>;
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+ debug = <0>;
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+
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+ init = <0x10000b0 0x00
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+ 0x1000011
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+ 0x20000ff
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+ 0x100003a 0x55
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+ 0x1000036 0x28
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+ 0x10000c0 0x11 0x09
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+ 0x10000c1 0x41
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+ 0x10000c5 0x00 0x00 0x00 0x00
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+ 0x10000b6 0x00 0x02
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+ 0x10000f7 0xa9 0x51 0x2c 0x2
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+ 0x10000be 0x00 0x04
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+ 0x10000e9 0x00
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+ 0x1000011
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+ 0x1000029>;
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+
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+ };
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+
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+ piscreen2_ts: piscreen2-ts@1 {
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+ compatible = "ti,ads7846";
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+ reg = <1>;
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+
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+ spi-max-frequency = <2000000>;
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+ interrupts = <17 2>; /* high-to-low edge triggered */
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+ interrupt-parent = <&gpio>;
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+ pendown-gpio = <&gpio 17 0>;
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+ ti,swap-xy;
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+ ti,x-plate-ohms = /bits/ 16 <100>;
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+ ti,pressure-max = /bits/ 16 <255>;
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+ };
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+ };
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+ };
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+ __overrides__ {
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+ speed = <&piscreen2>,"spi-max-frequency:0";
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+ rotate = <&piscreen2>,"rotate:0";
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+ fps = <&piscreen2>,"fps:0";
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+ debug = <&piscreen2>,"debug:0";
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+ xohms = <&piscreen2_ts>,"ti,x-plate-ohms;0";
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+ };
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+};
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+
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