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Diffstat (limited to 'roms/skiboot/doc/device-tree/tpm.rst')
| -rw-r--r-- | roms/skiboot/doc/device-tree/tpm.rst | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/roms/skiboot/doc/device-tree/tpm.rst b/roms/skiboot/doc/device-tree/tpm.rst new file mode 100644 index 000000000..a8e67bc0f --- /dev/null +++ b/roms/skiboot/doc/device-tree/tpm.rst @@ -0,0 +1,47 @@ +.. _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>; + }; + |