1* NXP Semiconductors PN544 NFC Controller
2
3Required properties:
4- compatible: Should be "nxp,pn544-i2c".
5- clock-frequency: I�C 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 PN544
10- firmware-gpios: Output GPIO pin used to enter firmware download mode
11
12Optional SoC Specific Properties:
13- pinctrl-names: Contains only one value - "default".
14- pintctrl-0: Specifies the pin control groups used for this controller.
15
16Example (for ARM-based BeagleBone with PN544 on I2C2):
17
18&i2c2 {
19
20	status = "okay";
21
22	pn544: pn544@28 {
23
24		compatible = "nxp,pn544-i2c";
25
26		reg = <0x28>;
27		clock-frequency = <400000>;
28
29		interrupt-parent = <&gpio1>;
30		interrupts = <17 GPIO_ACTIVE_HIGH>;
31
32		enable-gpios = <&gpio3 21 GPIO_ACTIVE_HIGH>;
33		firmware-gpios = <&gpio3 19 GPIO_ACTIVE_HIGH>;
34	};
35};
36