48 lines
1.1 KiB
ReStructuredText
48 lines
1.1 KiB
ReStructuredText
|
.. _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>;
|
||
|
|
};
|
||
|
|
|