1* STMicroelectronics SAS. ST NCI NFC Controller 2 3Required properties: 4- compatible: Should be "st,st21nfcb-i2c" or "st,st21nfcc-i2c". 5- clock-frequency: I²C work frequency. 6- reg: address on the bus 7- interrupts: GPIO interrupt to which the chip is connected 8- reset-gpios: Output GPIO pin used to reset the ST21NFCB 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- ese-present: Specifies that an ese is physically connected to the nfc 14controller. 15- uicc-present: Specifies that the uicc swp signal can be physically 16connected to the nfc controller. 17 18Example (for ARM-based BeagleBoard xM with ST21NFCB on I2C2): 19 20&i2c2 { 21 22 23 st21nfcb: st21nfcb@8 { 24 25 compatible = "st,st21nfcb-i2c"; 26 27 reg = <0x08>; 28 clock-frequency = <400000>; 29 30 interrupt-parent = <&gpio5>; 31 interrupts = <2 IRQ_TYPE_LEVEL_HIGH>; 32 33 reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>; 34 35 ese-present; 36 uicc-present; 37 }; 38}; 39