47 lines
1.2 KiB
Plaintext
47 lines
1.2 KiB
Plaintext
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* NXP Semiconductors PN532 NFC Controller
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Required properties:
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- compatible: Should be
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- "nxp,pn532" Place a node with this inside the devicetree node of the bus
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where the NFC chip is connected to.
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Currently the kernel has phy bindings for uart and i2c.
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- "nxp,pn532-i2c" (DEPRECATED) only works for the i2c binding.
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- "nxp,pn533-i2c" (DEPRECATED) only works for the i2c binding.
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Required properties if connected on i2c:
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- clock-frequency: I²C work frequency.
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- reg: for the I²C bus address. This is fixed at 0x24 for the PN532.
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- interrupts: GPIO interrupt to which the chip is connected
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Optional SoC Specific Properties:
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- pinctrl-names: Contains only one value - "default".
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- pintctrl-0: Specifies the pin control groups used for this controller.
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Example (for ARM-based BeagleBone with PN532 on I2C2):
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&i2c2 {
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pn532: nfc@24 {
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compatible = "nxp,pn532";
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reg = <0x24>;
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clock-frequency = <400000>;
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interrupt-parent = <&gpio1>;
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interrupts = <17 IRQ_TYPE_EDGE_FALLING>;
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};
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};
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Example (for PN532 connected via uart):
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uart4: serial@49042000 {
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compatible = "ti,omap3-uart";
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pn532: nfc {
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compatible = "nxp,pn532";
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};
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};
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