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* 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";
};
};
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