* NXP Semiconductors PN544 NFC Controller
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Required properties:
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- compatible: Should be "nxp,pn544-i2c".
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- clock-frequency: I²C work frequency.
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- reg: address on the bus
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- interrupts: GPIO interrupt to which the chip is connected
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- enable-gpios: Output GPIO pin used for enabling/disabling the PN544
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- firmware-gpios: Output GPIO pin used to enter firmware download mode
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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 PN544 on I2C2):
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&i2c2 {
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pn544: pn544@28 {
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compatible = "nxp,pn544-i2c";
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reg = <0x28>;
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clock-frequency = <400000>;
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interrupt-parent = <&gpio1>;
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interrupts = <17 IRQ_TYPE_LEVEL_HIGH>;
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enable-gpios = <&gpio3 21 GPIO_ACTIVE_HIGH>;
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firmware-gpios = <&gpio3 19 GPIO_ACTIVE_HIGH>;
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};
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};
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