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path: root/arch/arm/boot/dts/overlays/sh1106-spi-overlay.dts
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/*
 * Device Tree overlay for SH1106 based SPI OLED display
 *
 */

/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__ {
			sh1106_pins: sh1106_pins {
                                brcm,pins = <25 24>;
                                brcm,function = <1 1>; /* out out */
			};
		};
	};

	fragment@4 {
		target = <&spi0>;
		__overlay__ {
			/* needed to avoid dtc warning */
			#address-cells = <1>;
			#size-cells = <0>;

			sh1106: sh1106@0{
				compatible = "sinowealth,sh1106";
				reg = <0>;
				pinctrl-names = "default";
				pinctrl-0 = <&sh1106_pins>;

				spi-max-frequency = <4000000>;
				bgr = <0>;
				bpp = <1>;
				rotate = <0>;
				fps = <25>;
				buswidth = <8>;
				reset-gpios = <&gpio 25 0>;
				dc-gpios = <&gpio 24 0>;
				debug = <0>;

				sinowealth,height = <64>;
				sinowealth,width = <128>;
				sinowealth,page-offset = <0>;
			};
		};
	};

	__overrides__ {
		speed     = <&sh1106>,"spi-max-frequency:0";
		rotate    = <&sh1106>,"rotate:0";
		fps       = <&sh1106>,"fps:0";
		debug     = <&sh1106>,"debug:0";
		dc_pin    = <&sh1106>,"dc-gpios:4",
		            <&sh1106_pins>,"brcm,pins:4";
		reset_pin = <&sh1106>,"reset-gpios:4",
		            <&sh1106_pins>,"brcm,pins:0";
		height    = <&sh1106>,"sinowealth,height:0";
	};
};