1 files changed, 152 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/overlays/hy28b-2017-overlay.dts b/arch/arm/boot/dts/overlays/hy28b-2017-overlay.dts
new file mode 100644
index 000000000000..42b68b684bd0
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/hy28b-2017-overlay.dts
@@ -0,0 +1,152 @@
+/*
+ * Device Tree overlay for HY28b display shield by Texy.
+ * Modified for 2017 version with ILI9325 D chip
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&spidev0>;
+		__overlay__ {
+			status = "disabled";
+		};
+	};
+
+	fragment@2 {
+		target = <&spidev1>;
+		__overlay__ {
+			status = "disabled";
+		};
+	};
+
+	fragment@3 {
+		target = <&gpio>;
+		__overlay__ {
+			hy28b_pins: hy28b_pins {
+				brcm,pins = <17 25 18>;
+				brcm,function = <0 1 1>; /* in out out */
+			};
+		};
+	};
+
+	fragment@4 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hy28b: hy28b@0{
+				compatible = "ilitek,ili9325";
+				reg = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&hy28b_pins>;
+
+				spi-max-frequency = <48000000>;
+				spi-cpol;
+				spi-cpha;
+				rotate = <270>;
+				bgr;
+				fps = <50>;
+				buswidth = <8>;
+				startbyte = <0x70>;
+				reset-gpios = <&gpio 25 0>;
+				led-gpios = <&gpio 18 1>;
+
+				init = <0x10000e5 0x78F0
+					0x1000001 0x0100
+					0x1000002 0x0700
+				        0x1000003 0x1030
+					0x1000004 0x0000
+					0x1000008 0x0207
+					0x1000009 0x0000
+				        0x100000a 0x0000
+					0x100000c 0x0000
+					0x100000d 0x0000
+					0x100000f 0x0000
+				        0x1000010 0x0000
+					0x1000011 0x0007
+					0x1000012 0x0000
+					0x1000013 0x0000
+					0x1000007 0x0001
+				        0x2000032
+				        0x2000032
+				        0x2000032
+				        0x2000032
+					0x1000010 0x1090
+					0x1000011 0x0227
+				        0x2000032
+					0x1000012 0x001f
+				        0x2000032
+				        0x1000013 0x1500
+					0x1000029 0x0027
+					0x100002b 0x000d
+				        0x2000032
+				        0x1000020 0x0000
+					0x1000021 0x0000
+				        0x2000032
+					0x1000030 0x0000
+					0x1000031 0x0707
+					0x1000032 0x0307
+					0x1000035 0x0200
+					0x1000036 0x0008
+					0x1000037 0x0004
+					0x1000038 0x0000
+					0x1000039 0x0707
+					0x100003c 0x0002
+					0x100003d 0x1d04
+					0x1000050 0x0000
+				        0x1000051 0x00ef
+					0x1000052 0x0000
+					0x1000053 0x013f
+					0x1000060 0xa700
+				        0x1000061 0x0001
+					0x100006a 0x0000
+					0x1000080 0x0000
+					0x1000081 0x0000
+				        0x1000082 0x0000
+					0x1000083 0x0000
+					0x1000084 0x0000
+					0x1000085 0x0000
+				        0x1000090 0x0010
+					0x1000092 0x0600
+					0x1000007 0x0133>;
+				debug = <0>;
+			};
+
+			hy28b_ts: hy28b-ts@1 {
+				compatible = "ti,ads7846";
+				reg = <1>;
+
+				spi-max-frequency = <2000000>;
+				interrupts = <17 2>; /* high-to-low edge triggered */
+				interrupt-parent = <&gpio>;
+				pendown-gpio = <&gpio 17 0>;
+				ti,x-plate-ohms = /bits/ 16 <100>;
+				ti,pressure-max = /bits/ 16 <255>;
+			};
+		};
+	};
+	__overrides__ {
+		speed = 	<&hy28b>,"spi-max-frequency:0";
+		rotate = 	<&hy28b>,"rotate:0";
+		fps = 		<&hy28b>,"fps:0";
+		debug = 	<&hy28b>,"debug:0";
+		xohms =		<&hy28b_ts>,"ti,x-plate-ohms;0";
+		resetgpio =	<&hy28b>,"reset-gpios:4",
+				<&hy28b_pins>, "brcm,pins:4";
+		ledgpio =	<&hy28b>,"led-gpios:4",
+				<&hy28b_pins>, "brcm,pins:8";
+	};
+};