add test overlay for fullscreen st7789v

adafruit-pitft.sh

@@ -251,8 +251,8 @@ function update_configtxt() {
     fi
 
     if [ "${pitfttype}" == "st7789_240x320" ]; then
-        dtc -@ -I dts -O dtb -o /boot/overlays/drm-minipitft20.dtbo overlays/minipitft20-overlay.dts
-        overlay="dtoverlay=drm-minipitft20,rotation=${pitftrot}"
+        dtc -@ -I dts -O dtb -o /boot/overlays/drm-st7789v_240x320.dtbo overlays/st7789v_240x320-overlay.dts
+        overlay="dtoverlay=drm-st7789v_240x320,rotation=${pitftrot}"
     fi
     
     if [ "${pitfttype}" == "st7789_240x240" ]; then

overlays/st7789v_240x320-overlay.dts

@@ -0,0 +1,78 @@
+/*
+ * Device Tree overlay for Adafruit ST7789V 240x320 Display
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			status = "okay";
+
+			spidev@0{
+				status = "disabled";
+			};
+
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			pitft_pins: pitft_pins {
+				brcm,pins = <25>; /* dc pin */
+				brcm,function = <1>; /* out */
+				brcm,pull = <0>; /* no pull */
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			pitft: pitft@0{
+				compatible = "multi-inno,mi0283qt";
+				reg = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&pitft_pins>;
+
+				spi-max-frequency = <32000000>;
+				rotation = <0>;
+				width = <240>;
+				height = <320>;
+				col_offset = <0>;
+				row_offset = <0>;
+				dc-gpios = <&gpio 25 0>;
+				backlight = <&backlight>;
+			};
+		};
+	};
+
+	fragment@3 {
+		target-path = "/soc";
+		__overlay__ {
+			backlight: backlight {
+				compatible = "gpio-backlight";
+				gpios = <&gpio 22 0>;
+			};
+		};
+	};
+
+	__overrides__ {
+		speed =       <&pitft>,"spi-max-frequency:0";
+		rotation =    <&pitft>,"rotation:0";
+		width =       <&pitft>,"width:0";
+		height =      <&pitft>,"height:0";
+		col_offset =  <&pitft>,"col_offset:0";
+		row_offset =  <&pitft>,"row_offset:0";
+	};
+};