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- * NXP Semiconductors PN544 NFC Controller
- Required properties:
- - compatible: Should be "nxp,pn544-i2c".
- - clock-frequency: I²C work frequency.
- - reg: address on the bus
- - interrupt-parent: phandle for the interrupt gpio controller
- - interrupts: GPIO interrupt to which the chip is connected
- - enable-gpios: Output GPIO pin used for enabling/disabling the PN544
- - firmware-gpios: Output GPIO pin used to enter firmware download mode
- Optional SoC Specific Properties:
- - pinctrl-names: Contains only one value - "default".
- - pintctrl-0: Specifies the pin control groups used for this controller.
- Example (for ARM-based BeagleBone with PN544 on I2C2):
- &i2c2 {
- status = "okay";
- pn544: pn544@28 {
- compatible = "nxp,pn544-i2c";
- reg = <0x28>;
- clock-frequency = <400000>;
- interrupt-parent = <&gpio1>;
- interrupts = <17 GPIO_ACTIVE_HIGH>;
- enable-gpios = <&gpio3 21 GPIO_ACTIVE_HIGH>;
- firmware-gpios = <&gpio3 19 GPIO_ACTIVE_HIGH>;
- };
- };
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