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-* Texas Instruments TRF7970A RFID/NFC/15693 Transceiver
-
-Required properties:
-- compatible: Should be "ti,trf7970a".
-- spi-max-frequency: Maximum SPI frequency (<= 2000000).
-- interrupts: A single interrupt specifier.
-- ti,enable-gpios: One or two GPIO entries used for 'EN' and 'EN2' pins on the
- TRF7970A. EN2 is optional.
-- 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.
-- irq-status-read-quirk: Specify that the trf7970a being used has the
- "IRQ Status Read" erratum.
-- en2-rf-quirk: Specify that the trf7970a being used has the "EN2 RF"
- erratum.
-- vdd-io-supply: Regulator specifying voltage for vdd-io
-- clock-frequency: Set to specify that the input frequency to the trf7970a is 13560000Hz or 27120000Hz
-
-Example (for ARM-based BeagleBone with TRF7970A on SPI1):
-
-&spi1 {
-
- 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_HIGH>,
- <&gpio2 5 GPIO_ACTIVE_HIGH>;
- vin-supply = <&ldo3_reg>;
- vdd-io-supply = <&ldo2_reg>;
- autosuspend-delay = <30000>;
- irq-status-read-quirk;
- en2-rf-quirk;
- clock-frequency = <27120000>;
- };
-};