The PPI GUID for that TPM initialization is done. TPM initialization may be success or fail.
Include/Ppi/TpmInitialized.h

PPI Information

PPI's Guid Name	PPI's Guid
gPeiTpmInitializationDonePpiGuid	{ 0xa030d115, 0x54dd, 0x447b, { 0x90, 0x64, 0xf2, 0x6, 0x88, 0x3d, 0x7c, 0xcc }}

Refer to Header File