CooCenter-System-kernel/Documentation/devicetree/bindings/security/tpm/st33zp24-i2c.txt

* STMicroelectronics SAS. ST33ZP24 TPM SoC

Required properties:
- compatible: Should be "st,st33zp24-i2c".
- clock-frequency: I²C work frequency.
- reg: address on the bus

Optional ST33ZP24 Properties:
- interrupt-parent: phandle for the interrupt gpio controller
- interrupts: GPIO interrupt to which the chip is connected
- lpcpd-gpios: Output GPIO pin used for ST33ZP24 power management D1/D2 state.
If set, power must be present when the platform is going into sleep/hibernate mode.

Optional SoC Specific Properties:
- pinctrl-names: Contains only one value - "default".
- pintctrl-0: Specifies the pin control groups used for this controller.

Example (for ARM-based BeagleBoard xM with ST33ZP24 on I2C2):

&i2c2 {

        status = "okay";

        st33zp24: st33zp24@13 {

                compatible = "st,st33zp24-i2c";

                reg = <0x13>;
                clock-frequency = <400000>;

                interrupt-parent = <&gpio5>;
                interrupts = <7 IRQ_TYPE_LEVEL_HIGH>;

                lpcpd-gpios = <&gpio5 15 GPIO_ACTIVE_HIGH>;
        };
};