Documentation/devicetree/bindings/net/nfc/nfcmrvl.txt

   1 * Marvell International Ltd. NCI NFC Controller
   2
   3 Required properties:
   4 - compatible: Should be:
   5   - "marvell,nfc-uart" or "mrvl,nfc-uart" for UART devices
   6   - "marvell,nfc-i2c" for I2C devices
   7   - "marvell,nfc-spi" for SPI devices
   8
   9 Optional SoC specific properties:
  10 - pinctrl-names: Contains only one value - "default".
  11 - pintctrl-0: Specifies the pin control groups used for this controller.
  12 - reset-n-io: Output GPIO pin used to reset the chip (active low).
  13 - hci-muxed: Specifies that the chip is muxing NCI over HCI frames.
  14
  15 Optional UART-based chip specific properties:
  16 - flow-control: Specifies that the chip is using RTS/CTS.
  17 - break-control: Specifies that the chip needs specific break management.
  18
  19 Optional I2C-based chip specific properties:
  20 - i2c-int-falling: Specifies that the chip read event shall be trigged on
  21                    falling edge.
  22 - i2c-int-rising: Specifies that the chip read event shall be trigged on
  23                   rising edge.
  24
  25 Example (for ARM-based BeagleBoard Black with 88W8887 on UART5):
  26
  27 &uart5 {
  28
  29         nfcmrvluart: nfcmrvluart@5 {
  30                 compatible = "marvell,nfc-uart";
  31
  32                 reset-n-io = <&gpio3 16 0>;
  33
  34                 hci-muxed;
  35                 flow-control;
  36         }
  37 };
  38
  39
  40 Example (for ARM-based BeagleBoard Black with 88W8887 on I2C1):
  41
  42 &i2c1 {
  43         clock-frequency = <400000>;
  44
  45         nfcmrvli2c0: i2c@1 {
  46                 compatible = "marvell,nfc-i2c";
  47
  48                 reg = <0x8>;
  49
  50                 /* I2C INT configuration */
  51                 interrupt-parent = <&gpio3>;
  52                 interrupts = <21 0>;
  53
  54                 /* I2C INT trigger configuration */
  55                 i2c-int-rising;
  56
  57                 /* Reset IO */
  58                 reset-n-io = <&gpio3 19 0>;
  59         };
  60 };
  61
  62
  63 Example (for ARM-based BeagleBoard Black on SPI0):
  64
  65 &spi0 {
  66
  67         mrvlnfcspi0: spi@0 {
  68                 compatible = "marvell,nfc-spi";
  69
  70                 reg = <0>;
  71
  72                 /* SPI Bus configuration */
  73                 spi-max-frequency = <3000000>;
  74                 spi-cpha;
  75                 spi-cpol;
  76
  77                 /* SPI INT configuration */
  78                 interrupt-parent = <&gpio1>;
  79                 interrupts = <17 0>;
  80
  81                 /* Reset IO */
  82                 reset-n-io = <&gpio3 19 0>;
  83         };
  84 };