* Texas Instruments TRF7970A RFID/NFC/15693 Transceiver Required properties: - compatible: Should be "ti,trf7970a". - spi-max-frequency: Maximum SPI frequency (<= 2000000). - interrupt-parent: phandle of parent interrupt handler. - interrupts: A single interrupt specifier. - ti,enable-gpios: Two GPIO entries used for 'EN' and 'EN2' pins on the TRF7970A. - vin-supply: Regulator for supply voltage to VIN pin Optional SoC Specific Properties: - pinctrl-names: Contains only one value - "default". - pintctrl-0: Specifies the pin control groups used for this controller. - autosuspend-delay: Specify autosuspend delay in milliseconds. Example (for ARM-based BeagleBone with TRF7970A on SPI1): &spi1 { status = "okay"; nfc@0 { compatible = "ti,trf7970a"; reg = <0>; pinctrl-names = "default"; pinctrl-0 = <&trf7970a_default>; spi-max-frequency = <2000000>; interrupt-parent = <&gpio2>; interrupts = <14 0>; ti,enable-gpios = <&gpio2 2 GPIO_ACTIVE_LOW>, <&gpio2 5 GPIO_ACTIVE_LOW>; vin-supply = <&ldo3_reg>; autosuspend-delay = <30000>; status = "okay"; }; };