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.


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>;