OpenWrt – Rev 1
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From 15aa7a1d49c20f7f41b5c69cea2f46e1e976e660 Mon Sep 17 00:00:00 2001
From: Aaron Shaw <shawaj@gmail.com>
Date: Sun, 24 Dec 2017 21:57:05 +0000
Subject: [PATCH 143/454] overlays: Add media center HAT overlay (#2313)
---
arch/arm/boot/dts/overlays/Makefile | 1 +
arch/arm/boot/dts/overlays/README | 24 ++++
.../dts/overlays/media-center-overlay.dts | 132 ++++++++++++++++++
3 files changed, 157 insertions(+)
create mode 100644 arch/arm/boot/dts/overlays/media-center-overlay.dts
--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -61,6 +61,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
mcp2515-can0.dtbo \
mcp2515-can1.dtbo \
mcp3008.dtbo \
+ media-center.dtbo \
midi-uart0.dtbo \
midi-uart1.dtbo \
mmc.dtbo \
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -994,6 +994,30 @@ Params: spi<n>-<m>-present boolean,
spi<n>-<m>-speed integer, set the spi bus speed for this device
+Name: media-center
+Info: Media Center HAT - 2.83" Touch Display + extras by Pi Supply
+Load: dtoverlay=media-center,<param>=<val>
+Params: speed Display SPI bus speed
+ rotate Display rotation {0,90,180,270}
+ fps Delay between frame updates
+ xohms Touchpanel sensitivity (X-plate resistance)
+ swapxy Swap x and y axis
+ gpio_out_pin GPIO for output (default "17")
+ gpio_in_pin GPIO for input (default "18")
+ gpio_in_pull Pull up/down/off on the input pin
+ (default "down")
+ sense Override the IR receive auto-detection logic:
+ "0" = force active-high
+ "1" = force active-low
+ "-1" = use auto-detection
+ (default "-1")
+ softcarrier Turn the software carrier "on" or "off"
+ (default "on")
+ invert "on" = invert the output pin (default "off")
+ debug "on" = enable additional debug messages
+ (default "off")
+
+
Name: midi-uart0
Info: Configures UART0 (ttyAMA0) so that a requested 38.4kbaud actually gets
31.25kbaud, the frequency required for MIDI
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/media-center-overlay.dts
@@ -0,0 +1,132 @@
+/*
+ * Device Tree overlay for Media Center HAT by Pi Supply
+ *
+ */
+
+/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__ {
+ rpi_display_pins: rpi_display_pins {
+ brcm,pins = <12 23 24 25>;
+ brcm,function = <1 1 1 0>; /* out out out in */
+ brcm,pull = <0 0 0 2>; /* - - - up */
+ };
+ };
+ };
+
+ fragment@2 {
+ target = <&spi0>;
+ __overlay__ {
+ /* needed to avoid dtc warning */
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ rpidisplay: rpi-display@0{
+ compatible = "ilitek,ili9341";
+ reg = <0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&rpi_display_pins>;
+
+ spi-max-frequency = <32000000>;
+ rotate = <90>;
+ bgr;
+ fps = <30>;
+ buswidth = <8>;
+ reset-gpios = <&gpio 23 0>;
+ dc-gpios = <&gpio 24 0>;
+ led-gpios = <&gpio 12 1>;
+ debug = <0>;
+ };
+
+ rpidisplay_ts: rpi-display-ts@1 {
+ compatible = "ti,ads7846";
+ reg = <1>;
+
+ spi-max-frequency = <2000000>;
+ interrupts = <25 2>; /* high-to-low edge triggered */
+ interrupt-parent = <&gpio>;
+ pendown-gpio = <&gpio 25 0>;
+ ti,x-plate-ohms = /bits/ 16 <60>;
+ ti,pressure-max = /bits/ 16 <255>;
+ };
+ };
+ };
+
+ fragment@3 {
+ target-path = "/";
+ __overlay__ {
+ lirc_rpi: lirc_rpi {
+ compatible = "rpi,lirc-rpi";
+ pinctrl-names = "default";
+ pinctrl-0 = <&lirc_pins>;
+ status = "okay";
+
+ // Override autodetection of IR receiver circuit
+ // (0 = active high, 1 = active low, -1 = no override )
+ rpi,sense = <0xffffffff>;
+
+ // Software carrier
+ // (0 = off, 1 = on)
+ rpi,softcarrier = <1>;
+
+ // Invert output
+ // (0 = off, 1 = on)
+ rpi,invert = <0>;
+
+ // Enable debugging messages
+ // (0 = off, 1 = on)
+ rpi,debug = <0>;
+ };
+ };
+ };
+
+ fragment@4 {
+ target = <&gpio>;
+ __overlay__ {
+ lirc_pins: lirc_pins {
+ brcm,pins = <6 5>;
+ brcm,function = <1 0>; // out in
+ brcm,pull = <0 1>; // off down
+ };
+ };
+ };
+
+ __overrides__ {
+ speed = <&rpidisplay>,"spi-max-frequency:0";
+ rotate = <&rpidisplay>,"rotate:0";
+ fps = <&rpidisplay>,"fps:0";
+ debug = <&rpidisplay>,"debug:0",
+ <&lirc_rpi>,"rpi,debug:0";
+ xohms = <&rpidisplay_ts>,"ti,x-plate-ohms;0";
+ swapxy = <&rpidisplay_ts>,"ti,swap-xy?";
+
+ gpio_out_pin = <&lirc_pins>,"brcm,pins:0";
+ gpio_in_pin = <&lirc_pins>,"brcm,pins:4";
+ gpio_in_pull = <&lirc_pins>,"brcm,pull:4";
+
+ sense = <&lirc_rpi>,"rpi,sense:0";
+ softcarrier = <&lirc_rpi>,"rpi,softcarrier:0";
+ invert = <&lirc_rpi>,"rpi,invert:0";
+ };
+};
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