Kernel-4.18.0-80.el8_pn544

• 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 {


	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>;
	};
};