| .. _device-tree/tpm: |
| |
| Trusted Platform Module (TPM) |
| ============================= |
| |
| The tpm node describes a TPM device present in the platform. It also includes |
| event log information. |
| |
| Required properties |
| ------------------- |
| |
| All these properties are consumed by skiboot and the linux kernel (tpm and |
| vtpm codes) |
| |
| :: |
| |
| compatible : should have "nuvoton,npct650" |
| |
| linux,sml-base: 64-bit base address of the reserved memory allocated for firmware event log. |
| sml stands for shared memory log. |
| |
| linux,sml-size: size of the memory allocated for firmware event log. |
| |
| |
| Optional properties |
| ------------------- |
| |
| :: |
| |
| status: indicates whether the device is enabled or disabled. "okay" for |
| enabled and "disabled" for disabled. |
| |
| Example |
| ------- |
| |
| .. code-block:: dts |
| |
| tpm@57 { |
| reg = <0x57>; |
| compatible = "nuvoton,npct650", "nuvoton,npct601"; |
| linux,sml-base = <0x7f 0xfd450000>; |
| linux,sml-size = <0x10000>; |
| status = "okay"; |
| phandle = <0x10000017>; |
| linux,phandle = <0x10000017>; |
| }; |
| |