// setup pinmux and enable controller

&spi1 {
	status = "okay";

	pinctrl-names = "default";
	pinctrl-0 = <&spi1_pins>;
};

&am33xx_pinmux {
	spi1_pins: spi1 {
		pinctrl-single,pins = <
			// note: these pins actually have internal pull-down by default (from reset until
			// this pinmux is configured)
			AM33XX_PADCONF( AM335X_PIN_MCASP0_ACLKX,  PIN_INPUT_PULLUP, MUX_MODE3 )  // P9_31: spi1 clk out
			AM33XX_PADCONF( AM335X_PIN_MCASP0_FSX,    PIN_INPUT_PULLUP, MUX_MODE3 )  // P9_29: spi1 d0 / data in (miso)
			AM33XX_PADCONF( AM335X_PIN_MCASP0_AXR0,   PIN_INPUT_PULLUP, MUX_MODE3 )  // P9_30: spi1 d1 / data out (mosi)
			AM33XX_PADCONF( AM335X_PIN_MCASP0_AHCLKR, PIN_INPUT_PULLUP, MUX_MODE3 )  // P9_28: spi1 cs 0 out
		>;
	};
};

// declare connected device (example)

&spi1 {
	// NOTE: consider giving the node a descriptive name like flash@0

	spidev@0 {
		reg = <0>;
		compatible = "spidev";

		// create symlink (using /etc/udev/rules.d/10-of-symlink.rules)
		// NOTE: again, consider using something more descriptive
		symlink = "spi/1.0";  // create /dev/spi/1.0 symlink

		// XXX replace by actual max frequency supported by device
		spi-max-frequency = <48000000>;

		// XXX this selects SPI mode 3 by default, adjust as appropriate
		spi-cpol;
		spi-cpha;
	};
};