Kernel-4.18.0-80.el8_nxp-nci

• NXP Semiconductors NXP NCI NFC Controllers

Required properties:

• compatible: Should be “nxp,nxp-nci-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 chip
• 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 NPC100 NFC controller on I2C2):

&i2c2 {

npc100: npc100@29 {

    compatible = "nxp,nxp-nci-i2c";

    reg = <0x29>;
    clock-frequency = <100000>;

    interrupt-parent = <&gpio1>;
    interrupts = <29 GPIO_ACTIVE_HIGH>;

    enable-gpios = <&gpio0 30 GPIO_ACTIVE_HIGH>;
    firmware-gpios = <&gpio0 31 GPIO_ACTIVE_HIGH>;
};

};