pn544.txt

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    1 * NXP Semiconductors PN544 NFC Controller
    2 
    3 Required properties:
    4 - compatible: Should be "nxp,pn544-i2c".
    5 - clock-frequency: I²C work frequency.
    6 - reg: address on the bus
    7 - interrupts: GPIO interrupt to which the chip is connected
    8 - enable-gpios: Output GPIO pin used for enabling/disabling the PN544
    9 - firmware-gpios: Output GPIO pin used to enter firmware download mode
   10 
   11 Optional SoC Specific Properties:
   12 - pinctrl-names: Contains only one value - "default".
   13 - pintctrl-0: Specifies the pin control groups used for this controller.
   14 
   15 Example (for ARM-based BeagleBone with PN544 on I2C2):
   16 
   17 &i2c2 {
   18 
   19 
   20         pn544: pn544@28 {
   21 
   22                 compatible = "nxp,pn544-i2c";
   23 
   24                 reg = <0x28>;
   25                 clock-frequency = <400000>;
   26 
   27                 interrupt-parent = <&gpio1>;
   28                 interrupts = <17 IRQ_TYPE_LEVEL_HIGH>;
   29 
   30                 enable-gpios = <&gpio3 21 GPIO_ACTIVE_HIGH>;
   31                 firmware-gpios = <&gpio3 19 GPIO_ACTIVE_HIGH>;
   32         };
   33 };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/net/nfc/pn544.txt

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/net/nfc/pn544.txt