Documentation/devicetree/bindings/security/tpm/st33zp24-i2c.txt

   1 * STMicroelectronics SAS. ST33ZP24 TPM SoC
   2
   3 Required properties:
   4 - compatible: Should be "st,st33zp24-i2c".
   5 - clock-frequency: I²C work frequency.
   6 - reg: address on the bus
   7
   8 Optional ST33ZP24 Properties:
   9 - interrupt-parent: phandle for the interrupt gpio controller
  10 - interrupts: GPIO interrupt to which the chip is connected
  11 - lpcpd-gpios: Output GPIO pin used for ST33ZP24 power management D1/D2 state.
  12 If set, power must be present when the platform is going into sleep/hibernate mode.
  13
  14 Optional SoC Specific Properties:
  15 - pinctrl-names: Contains only one value - "default".
  16 - pintctrl-0: Specifies the pin control groups used for this controller.
  17
  18 Example (for ARM-based BeagleBoard xM with ST33ZP24 on I2C2):
  19
  20 &i2c2 {
  21
  22
  23         st33zp24: st33zp24@13 {
  24
  25                 compatible = "st,st33zp24-i2c";
  26
  27                 reg = <0x13>;
  28                 clock-frequency = <400000>;
  29
  30                 interrupt-parent = <&gpio5>;
  31                 interrupts = <7 IRQ_TYPE_LEVEL_HIGH>;
  32
  33                 lpcpd-gpios = <&gpio5 15 GPIO_ACTIVE_HIGH>;
  34         };
  35 };