Kernel-4.18.0-80.el8_nfcmrvl

• Marvell International Ltd. NCI NFC Controller

Required properties:

• compatible: Should be:
  • “marvell,nfc-uart” or “mrvl,nfc-uart” for UART devices
  • “marvell,nfc-i2c” for I2C devices
  • “marvell,nfc-spi” for SPI devices

Optional SoC specific properties:

• pinctrl-names: Contains only one value - “default”.
• pintctrl-0: Specifies the pin control groups used for this controller.
• reset-n-io: Output GPIO pin used to reset the chip (active low).
• hci-muxed: Specifies that the chip is muxing NCI over HCI frames.

Optional UART-based chip specific properties:

• flow-control: Specifies that the chip is using RTS/CTS.
• break-control: Specifies that the chip needs specific break management.

Optional I2C-based chip specific properties:

• i2c-int-falling: Specifies that the chip read event shall be trigged on

         falling edge.
  

• i2c-int-rising: Specifies that the chip read event shall be trigged on

        rising edge.
  

Example (for ARM-based BeagleBoard Black with 88W8887 on UART5):

&uart5 {

nfcmrvluart: nfcmrvluart@5 {
    compatible = "marvell,nfc-uart";

    reset-n-io = <&gpio3 16 0>;

    hci-muxed;
    flow-control;
    }

};

Example (for ARM-based BeagleBoard Black with 88W8887 on I2C1):

&i2c1 {
clock-frequency = <400000>;

nfcmrvli2c0: i2c@1 {
    compatible = "marvell,nfc-i2c";

    reg = <0x8>;

    /* I2C INT configuration */
    interrupt-parent = <&gpio3>;
    interrupts = <21 0>;

    /* I2C INT trigger configuration */
    i2c-int-rising;

    /* Reset IO */
    reset-n-io = <&gpio3 19 0>;
};

};

Example (for ARM-based BeagleBoard Black on SPI0):

&spi0 {

mrvlnfcspi0: spi@0 {
    compatible = "marvell,nfc-spi";

    reg = <0>;

    /* SPI Bus configuration */
    spi-max-frequency = <3000000>;
    spi-cpha;
    spi-cpol;

    /* SPI INT configuration */
    interrupt-parent = <&gpio1>;
    interrupts = <17 0>;

    /* Reset IO */
           reset-n-io = <&gpio3 19 0>;
};

};