Add Adafruit 3.5" TFT & touchscreen

Change-Id: I7993c961234aa968f81c8cd732d8cfa64a292ea8
Reviewed-on: https://tp-biosrd-v02/gerrit/81230
Reviewed-by: Scorpio Chang(張志賢) <Scorpio_Chang@asus.com>
Tested-by: Scorpio Chang(張志賢) <Scorpio_Chang@asus.com>

Author: yc-hou-0919

arch/arm/boot/dts/overlays/Makefile

@@ -9,6 +9,7 @@ dtbo-$(CONFIG_ARCH_ROCKCHIP) += \
 	waveshare32b-tinker.dtbo \
 	pps-gpio.dtbo \
 	w1-gpio.dtbo \
+	pitft35-resistive-tinker.dtbo \
 
 targets += dtbs dtbs_install
 targets += $(dtbo-y)

arch/arm/boot/dts/overlays/pitft35-resistive-tinker-overlay.dts

@@ -0,0 +1,86 @@
+/*
+ * Device Tree overlay for Adafruit PiTFT 3.5" resistive touch screen
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "rockchip,rk3288-miniarm", "rockchip,rk3288";
+
+	fragment@0 {
+		target = <&spi2>;
+
+		__overlay__ {
+			status = "okay";
+
+			spidev@0 {
+				status = "disabled";
+			};
+
+			spidev@1 {
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio5>;
+		__overlay__ {
+			pitft_pins: pitft_pins {
+				rockchip,pins = <5 11 0 &pcfg_pull_up>,
+				                <5 19 1 &pcfg_pull_none>;
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&spi2>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			pitft: pitft@0{
+				compatible = "himax,hx8357d";
+				reg = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&pitft_pins>;
+
+				spi-max-frequency = <16000000>;
+				rotate = <0>;
+				fps = <20>;
+				bgr;
+				buswidth = <8>;
+				dc-gpios = <&gpio5 19 0>;
+				debug = <0>;
+			};
+
+			pitft_ts@1 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				compatible = "st,stmpe610";
+				reg = <1>;
+
+				spi-max-frequency = <500000>;
+				interrupts = <11 2>; /* high-to-low edge triggered */
+				interrupt-parent = <&gpio5>;
+				interrupt-controller;
+
+				stmpe_touchscreen {
+					compatible = "st,stmpe-ts";
+					st,sample-time = <4>;
+					st,mod-12b = <1>;
+					st,ref-sel = <0>;
+					st,adc-freq = <2>;
+					st,ave-ctrl = <3>;
+					st,touch-det-delay = <4>;
+					st,settling = <2>;
+					st,fraction-z = <7>;
+					st,i-drive = <0>;
+				};
+			};
+		};
+	};
+};

arch/arm/configs/miniarm-rk3288_defconfig

@@ -439,6 +439,7 @@ CONFIG_INPUT_TOUCHSCREEN=y
 CONFIG_TOUCHSCREEN_ADS7846=y
 CONFIG_TOUCHSCREEN_ATMEL_MXT=y
 CONFIG_TOUCHSCREEN_ELAN=y
+CONFIG_TOUCHSCREEN_STMPE=y
 CONFIG_TOUCHSCREEN_USB_COMPOSITE=y
 CONFIG_TOUCHSCREEN_TINKER_FT5406=y
 CONFIG_TINKER_MCU=y
@@ -485,6 +486,8 @@ CONFIG_DW_WATCHDOG=y
 CONFIG_MFD_CROS_EC=y
 CONFIG_MFD_CROS_EC_SPI=y
 CONFIG_MFD_RK808=y
+CONFIG_MFD_STMPE=y
+CONFIG_STMPE_SPI=y
 CONFIG_MFD_TPS6586X=y
 CONFIG_REGULATOR_FIXED_VOLTAGE=y
 CONFIG_REGULATOR_ACT8865=y
@@ -620,6 +623,7 @@ CONFIG_DMADEVICES=y
 CONFIG_PL330_DMA=y
 CONFIG_STAGING=y
 CONFIG_FB_TFT=y
+CONFIG_FB_TFT_HX8357D=y
 CONFIG_FB_TFT_ILI9340=y
 CONFIG_FB_TFT_ILI9486=y
 CONFIG_FB_FLEX=y