openwrt/target/linux/brcm2708/patches-4.14/950-0143-overlays-Add-media-center-HAT-overlay-2313.patch

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";
+	};
+};