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 - interrupt-parent: phandle for the interrupt gpio controller
   8 - interrupts: GPIO interrupt to which the chip is connected
   9 - reset-gpios: Output GPIO pin used to reset the ST21NFCB
  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 - ese-present: Specifies that an ese is physically connected to the nfc
  15 controller.
  16 - uicc-present: Specifies that the uicc swp signal can be physically
  17 connected to the nfc controller.
  18
  19 Example (for ARM-based BeagleBoard xM with ST21NFCB on I2C2):
  20
  21 &i2c2 {
  22
  23         status = "okay";
  24
  25         st21nfcb: st21nfcb@8 {
  26
  27                 compatible = "st,st21nfcb-i2c";
  28
  29                 reg = <0x08>;
  30                 clock-frequency = <400000>;
  31
  32                 interrupt-parent = <&gpio5>;
  33                 interrupts = <2 IRQ_TYPE_LEVEL_HIGH>;
  34
  35                 reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;
  36
  37                 ese-present;
  38                 uicc-present;
  39         };
  40 };