* NXP Semiconductors PN532 NFC Controller Required properties: - compatible: Should be - "nxp,pn532" Place a node with this inside the devicetree node of the bus where the NFC chip is connected to. Currently the kernel has phy bindings for uart and i2c. - "nxp,pn532-i2c" (DEPRECATED) only works for the i2c binding. - "nxp,pn533-i2c" (DEPRECATED) only works for the i2c binding. Required properties if connected on i2c: - clock-frequency: I²C work frequency. - reg: for the I²C bus address. This is fixed at 0x24 for the PN532. - interrupts: GPIO interrupt to which the chip is connected 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 PN532 on I2C2): &i2c2 { pn532: nfc@24 { compatible = "nxp,pn532"; reg = <0x24>; clock-frequency = <400000>; interrupt-parent = <&gpio1>; interrupts = <17 IRQ_TYPE_EDGE_FALLING>; }; }; Example (for PN532 connected via uart): uart4: serial@49042000 { compatible = "ti,omap3-uart"; pn532: nfc { compatible = "nxp,pn532"; }; };