Documentation/devicetree/bindings/net/nfc/st-nci-i2c.txt

   1 * STMicroelectronics SAS. ST NCI NFC Controller
   2
   3 Required properties:
   4 - compatible: Should be "st,st21nfcb-i2c" or "st,st21nfcc-i2c".
   5 - clock-frequency: I²C work frequency.
   6 - reg: address on the bus
   7 - interrupts: GPIO interrupt to which the chip is connected
   8 - reset-gpios: Output GPIO pin used to reset the ST21NFCB
   9
  10 Optional SoC Specific Properties:
  11 - pinctrl-names: Contains only one value - "default".
  12 - pintctrl-0: Specifies the pin control groups used for this controller.
  13 - ese-present: Specifies that an ese is physically connected to the nfc
  14 controller.
  15 - uicc-present: Specifies that the uicc swp signal can be physically
  16 connected to the nfc controller.
  17
  18 Example (for ARM-based BeagleBoard xM with ST21NFCB on I2C2):
  19
  20 &i2c2 {
  21
  22
  23         st21nfcb: st21nfcb@8 {
  24
  25                 compatible = "st,st21nfcb-i2c";
  26
  27                 reg = <0x08>;
  28                 clock-frequency = <400000>;
  29
  30                 interrupt-parent = <&gpio5>;
  31                 interrupts = <2 IRQ_TYPE_LEVEL_HIGH>;
  32
  33                 reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;
  34
  35                 ese-present;
  36                 uicc-present;
  37         };
  38 };