/dts-v1/;
/plugin/;

/*
 * There are some devices that need an inverted Chip Select (CS) to select the
 * device signal, as an example the AZDelivery 12864 display. That means that
 * the CS polarity is active-high. To invert the CS signal the DT needs to set
 * the cs-gpio to GPIO_ACTIVE_HIGH (0) in the controller and set the
 * spi-cs-high in the peripheral property. On top of that, since this is a
 * display the DT also needs to specify the write-only property.
*/

#include <dt-bindings/gpio/gpio.h>

/ {
	compatible = "brcm,bcm2835";

	fragment@0 {
		target = <&spi0_cs_pins>;
		frag0: __overlay__ {
			brcm,pins = <8>;
		};
	};

	fragment@1 {
		target = <&spi0>;
		frag1: __overlay__ {
			cs-gpios = <&gpio 8 GPIO_ACTIVE_HIGH>;
			status = "okay";
		};
	};

	fragment@2 {
		target = <&spidev1>;
		__overlay__ {
			status = "disabled";
		};
	};

	fragment@3 {
		target = <&spi0_pins>;
		__dormant__ {
			brcm,pins = <10 11>;
		};
	};

	fragment@4 {
		target = <&spidev0>;
		__overlay__ {
			spi-cs-high;
		};
	};

	__overrides__ {
		cs0_pin  = <&frag0>,"brcm,pins:0",
			   <&frag1>,"cs-gpios:4";
		no_miso = <0>,"=3";
	};
};