sc16is752-spi1-overlay.dts

/dts-v1/;
/plugin/;

/ {
	compatible = "brcm,bcm2835";

	fragment@0 {
		target = <&gpio>;
		__overlay__ {
			spi1_pins: spi1_pins {
				brcm,pins = <19 20 21>;
				brcm,function = <3>; /* alt4 */
			};

			spi1_cs_pins: spi1_cs_pins {
				brcm,pins = <18>;
				brcm,function = <1>; /* output */
			};
		};
	};

	fragment@1 {
		target = <&spi1>;
		frag1: __overlay__ {
			#address-cells = <1>;
			#size-cells = <0>;
			pinctrl-names = "default";
			pinctrl-0 = <&spi1_pins &spi1_cs_pins>;
			cs-gpios = <&gpio 18 1>;
			status = "okay";

			sc16is752: sc16is752@0 {
				compatible = "nxp,sc16is752";
				reg = <0>; /* CE0 */
				clocks = <&sc16is752_clk>;
				interrupt-parent = <&gpio>;
				interrupts = <24 2>; /* IRQ_TYPE_EDGE_FALLING */
				#gpio-controller;
				#gpio-cells = <2>;
				spi-max-frequency = <4000000>;
			};
		};
	};

	fragment@2 {
		target = <&aux>;
		__overlay__ {
			status = "okay";
		};
	};

	fragment@3 {
		target-path = "/";
		__overlay__ {
			sc16is752_clk: sc16is752_spi1_clk {
				compatible = "fixed-clock";
				#clock-cells = <0>;
				clock-frequency = <14745600>;
			};
		};
	};

	__overrides__ {
		int_pin = <&sc16is752>,"interrupts:0";
		xtal = <&sc16is752_clk>,"clock-frequency:0";
	};
};