1* STMicroelectronics SAS. ST21NFCA NFC Controller
2
3Required properties:
4- compatible: Should be "st,st21nfca-i2c".
5- clock-frequency: I²C work frequency.
6- reg: address on the bus
7- interrupt-parent: phandle for the interrupt gpio controller
8- interrupts: GPIO interrupt to which the chip is connected
9- enable-gpios: Output GPIO pin used for enabling/disabling the ST21NFCA
10
11Optional SoC Specific Properties:
12- pinctrl-names: Contains only one value - "default".
13- pintctrl-0: Specifies the pin control groups used for this controller.
14- ese-present: Specifies that an ese is physically connected to the nfc
15controller.
16- uicc-present: Specifies that the uicc swp signal can be physically
17connected to the nfc controller.
18
19Example (for ARM-based BeagleBoard xM with ST21NFCA on I2C2):
20
21&i2c2 {
22
23	status = "okay";
24
25	st21nfca: st21nfca@1 {
26
27		compatible = "st,st21nfca-i2c";
28
29		reg = <0x01>;
30		clock-frequency = <400000>;
31
32		interrupt-parent = <&gpio5>;
33		interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
34
35		enable-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;
36
37		ese-present;
38		uicc-present;
39	};
40};
41