1* NXP Semiconductors NXP NCI NFC Controllers 2 3Required properties: 4- compatible: Should be "nxp,nxp-nci-i2c". 5- clock-frequency: I²C work frequency. 6- reg: address on the bus 7- interrupts: GPIO interrupt to which the chip is connected 8- enable-gpios: Output GPIO pin used for enabling/disabling the chip 9 10Optional SoC Specific Properties: 11- pinctrl-names: Contains only one value - "default". 12- pintctrl-0: Specifies the pin control groups used for this controller. 13- firmware-gpios: Output GPIO pin used to enter firmware download mode 14 15Example (for ARM-based BeagleBone with NPC100 NFC controller on I2C2): 16 17&i2c2 { 18 19 20 npc100: npc100@29 { 21 22 compatible = "nxp,nxp-nci-i2c"; 23 24 reg = <0x29>; 25 clock-frequency = <100000>; 26 27 interrupt-parent = <&gpio1>; 28 interrupts = <29 IRQ_TYPE_LEVEL_HIGH>; 29 30 enable-gpios = <&gpio0 30 GPIO_ACTIVE_HIGH>; 31 firmware-gpios = <&gpio0 31 GPIO_ACTIVE_HIGH>; 32 }; 33}; 34