ODROID-XU4: add overlay support

arch/arm/boot/dts/samsung/Makefile

@@ -55,3 +55,5 @@ dtb-$(CONFIG_ARCH_S5PV210) += \
 	s5pv210-smdkc110.dtb \
 	s5pv210-smdkv210.dtb \
 	s5pv210-torbreck.dtb
+
+subdir-y += overlays

arch/arm/boot/dts/samsung/exynos5422-odroidxu4.dts

@@ -91,3 +91,38 @@
 &usbdrd_dwc3_1 {
 	dr_mode = "host";
 };
+
+&i2c_1 { 
+	status = "disabled";
+	samsung,i2c-max-bus-freq = <400000>;
+};
+
+&hsi2c_5 {
+    status = "disabled";
+    samsung,hs-mode;
+    clock-frequency = <400000>;
+};
+
+&spi_1 {
+        status = "disabled";
+        samsung,spi-src-clk = <0>;
+        num-cs = <2>;
+        cs-gpios = <&gpa2 5 GPIO_ACTIVE_HIGH>, <&gpx2 1 GPIO_ACTIVE_HIGH>;
+};
+
+&serial_0 {
+        status = "disabled";
+};
+
+&serial_1 {
+        status = "disabled";
+};
+
+&serial_2 {
+        // Debugging UART port
+        status = "okay";
+};
+
+&serial_3 {
+        status = "disabled";
+};

arch/arm/boot/dts/samsung/overlays/Makefile

@@ -0,0 +1,16 @@
+# Overlays for the Odroid platform
+
+dtbo-y += \
+	spi0.dtbo		\
+	i2c0.dtbo		\
+	i2c1.dtbo		\
+	uart0.dtbo		\
+	hktft32.dtbo		\
+	hktft35.dtbo		\
+	ads7846.dtbo		\
+	sx865x-i2c1.dtbo	\
+	onewire.dtbo		\
+	hktft-cs-ogst.dtbo
+
+targets += $(dtbo-y)
+always-y := $(dtbo-y)

arch/arm/boot/dts/samsung/overlays/ads7846.dts

@@ -0,0 +1,58 @@
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/samsung.h>
+
+/ {
+	fragment@0 {
+		// spi_1 aliased with spi0
+		target = <&spi_1>;
+
+		__overlay__ {
+			status = "okay";
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			ads7846: ads7846@1 {
+				status = "okay";
+
+				reg = <1>;
+				compatible = "ti,ads7846";
+				interrupt-parent = <&gpa0>;
+				interrupts = <3 0>;
+				spi-max-frequency = <1000000>;
+
+				/* GPA0.3 Pull-up enable */
+				pinctrl-0 = <&ts_pendown_gpio>;
+				pinctrl-names = "default";
+
+				pendown-gpio = <&gpa0 3 GPIO_ACTIVE_HIGH>;
+				vcc-supply = <&ldo30_reg>;
+
+				ti,swap-xy = <1>;
+				ti,x-min = /bits/ 16 <0>;
+				ti,x-max = /bits/ 16 <8000>;
+				ti,y-min = /bits/ 16 <0>;
+				ti,y-max = /bits/ 16 <4800>;
+				ti,x-plate-ohms = /bits/ 16 <40>;
+				ti,pressure-max = /bits/ 16 <255>;
+
+				linux,wakeup;
+
+				ts_pendown_gpio: ts-pendown-gpio {
+					samsung,pins = "gpa0-3";
+					samsung,pin-function = <EXYNOS_PIN_FUNC_INPUT>;
+					samsung,pin-pud = <EXYNOS_PIN_PULL_UP>;
+					samsung,pin-drv = <EXYNOS5420_PIN_DRV_LV1>;
+				};
+
+				controller-data {
+					cs-gpio = <&gpx2 1 GPIO_ACTIVE_HIGH>;
+					samsung,spi-feedback-delay = <0>;
+				};
+			};
+		};
+	};
+};

arch/arm/boot/dts/samsung/overlays/hktft-cs-ogst.dts

@@ -0,0 +1,48 @@
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	fragment@0 {
+		// spi_1 aliased with spi0
+		target = <&spi_1>;
+
+		__overlay__ {
+			status = "okay";
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hktft_cs_ogst: hktft_cs_ogst@0 {
+				status = "okay";
+				compatible = "odroid,hktft32";
+				reg = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&hktft_cs_ogst_pins>;
+
+				spi-max-frequency = <40000000>;
+				rotate = <270>;
+				bgr;
+				backlight;
+				fps = <20>;
+				bpp = <16>;
+				reset-gpios = <&gpx1 5 GPIO_ACTIVE_HIGH>;
+				dc-gpios = <&gpx1 6 GPIO_ACTIVE_HIGH>;
+				led-gpios = <&gpx1 2 GPIO_ACTIVE_LOW>;
+				debug = <0>;
+
+				hktft_cs_ogst_pins: hktft_cs_ogst_pins {
+					samsung,pins = "gpx1-5", /* reset */
+						"gpx1-6", /* dc */
+						"gpx1-2"; /* led */
+				};
+
+				controller-data {
+					cs-gpio = <&gpa2 5 GPIO_ACTIVE_HIGH>;
+					samsung,spi-feedback-delay = <0>;
+				};
+			};
+		};
+	};
+};

arch/arm/boot/dts/samsung/overlays/hktft32.dts

@@ -0,0 +1,46 @@
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	fragment@0 {
+		// spi_1 aliased with spi0
+		target = <&spi_1>;
+
+		__overlay__ {
+			status = "okay";
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hktft32: hktft32@0 {
+				status = "okay";
+				compatible = "odroid,hktft32";
+				reg = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&hktft32_pins>;
+
+				spi-max-frequency = <40000000>;
+				rotate = <90>;
+				bgr;
+				backlight;
+				fps = <20>;
+				bpp = <16>;
+				reset-gpios = <&gpx1 5 GPIO_ACTIVE_HIGH>;
+				dc-gpios = <&gpx1 6 GPIO_ACTIVE_HIGH>;
+				debug = <0>;
+
+				hktft32_pins: hktft32_pins {
+					samsung,pins = "gpx1-5", /* reset */
+						"gpx1-6"; /* dc */
+				};
+
+				controller-data {
+					cs-gpio = <&gpa2 5 GPIO_ACTIVE_HIGH>;
+					samsung,spi-feedback-delay = <0>;
+				};
+			};
+		};
+	};
+};

arch/arm/boot/dts/samsung/overlays/hktft35.dts

@@ -0,0 +1,55 @@
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	fragment@0 {
+		target-path = "/";
+
+		__overlay__ {
+			hktft35: hktft35 {
+				status = "okay";
+				compatible = "odroid,hktft35";
+				pinctrl-names = "default";
+				pinctrl-0 = <&hktft35_pins>;
+
+				rotate = <270>;
+				bgr;
+				fps = <20>;
+				bpp = <16>;
+				reset-gpios = <&gpa0 3 GPIO_ACTIVE_HIGH>;
+				dc-gpios = <&gpx2 4 GPIO_ACTIVE_HIGH>;
+				wr-gpios = <&gpa2 5 GPIO_ACTIVE_HIGH>;
+				cs-gpios = <&gpa0 2 GPIO_ACTIVE_HIGH>;
+				led-gpios = <&gpx2 7 GPIO_ACTIVE_HIGH>;
+				db-gpios = <&gpx1 7 GPIO_ACTIVE_HIGH>,
+					<&gpx2 0 GPIO_ACTIVE_HIGH>,
+					<&gpx1 3 GPIO_ACTIVE_HIGH>,
+					<&gpa2 4 GPIO_ACTIVE_HIGH>,
+					<&gpa2 6 GPIO_ACTIVE_HIGH>,
+					<&gpa2 7 GPIO_ACTIVE_HIGH>,
+					<&gpx1 6 GPIO_ACTIVE_HIGH>,
+					<&gpx1 5 GPIO_ACTIVE_HIGH>;
+				debug = <0>;
+
+				hktft35_pins: hktft35_pins {
+					samsung,pins = "gpa0-3", /* reset */
+						"gpx2-4", /* dc */
+						"gpa2-5", /* wr */
+						"gpa0-2", /* cs */
+						"gpx2-7", /* led */
+						"gpx1-7", /* db00 */
+						"gpx2-0", /* db01 */
+						"gpx1-3", /* db02 */
+						"gpa2-4", /* db03 */
+						"gpa2-6", /* db04 */
+						"gpa2-7", /* db05 */
+						"gpx1-6", /* db06 */
+						"gpx1-5"; /* db07 */
+					samsung,pin-function = <1>;
+				};
+			};
+		};
+	};
+};

arch/arm/boot/dts/samsung/overlays/i2c0.dts

@@ -0,0 +1,13 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+	fragment@0 {
+		// i2c_1 aliased with i2c0
+		target = <&i2c_1>;
+
+		__overlay__ {
+			status = "okay";
+		};
+	};
+};

arch/arm/boot/dts/samsung/overlays/i2c1.dts

@@ -0,0 +1,13 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+	fragment@0 {
+		// hsi2c_5 alised with i2c1
+		target = <&hsi2c_5>;
+
+		__overlay__ {
+			status = "okay";
+		};
+	};
+};

arch/arm/boot/dts/samsung/overlays/onewire.dts

@@ -0,0 +1,16 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+	fragment@0 {
+		target-path = "/";
+
+		__overlay__ {
+			onewire: onewire {
+				compatible = "w1-gpio";
+				gpios = <&gpx2 0 0>;
+				status = "okay";
+			};
+		};
+	};
+};

arch/arm/boot/dts/samsung/overlays/spi0.dts

@@ -0,0 +1,30 @@
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	fragment@0 {
+		// spi_1 aliased with spi0
+		target = <&spi_1>;
+
+		__overlay__ {
+			status = "okay";
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			spidev: spidev@0 {
+				status = "okay";
+				reg = <0>;
+				compatible = "odroid,spidev";
+				spi-max-frequency = <1000000>;
+
+				controller-data {
+					cs-gpio = <&gpa2 5 GPIO_ACTIVE_HIGH>;
+					samsung,spi-feedback-delay = <0>;
+				};
+			};
+		};
+	};
+};

arch/arm/boot/dts/samsung/overlays/sx865x-i2c1.dts

@@ -0,0 +1,34 @@
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	fragment@0 {
+		// hsi2c_5 alised with i2c1
+		target = <&hsi2c_5>;
+
+		__overlay__ {
+			status = "okay";
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			sx865x: sx865x@49 {
+				status = "okay";
+				compatible = "semtech,sx8650";
+				reg = <0x49>;
+				#clock-cells = <0>;
+
+				/* H/W Pin control setup */
+				gpio-pendown = <&gpx3 1 GPIO_ACTIVE_HIGH>;
+				gpio-reset   = <&gpx2 5 GPIO_ACTIVE_LOW>;
+
+				/* platform data setup */
+				invert-x = <0>;
+				invert-y = <1>;
+				swap-xy = <1>;
+			};
+		};
+	};
+};

arch/arm/boot/dts/samsung/overlays/uart0.dts

@@ -0,0 +1,12 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+	fragment@0 {
+		target = <&serial_0>;
+
+		__overlay__ {
+			status = "okay";
+		};
+	};
+};