The series of patches add PPI support in linux kernel. The Physical Presence Interface enables the OS and the BIOS to cooperate to provide a simple and straightforward platform user experience for administering the TPM without sacrificing security. PATCH 1: drivers: Add PPI support in tpm driver PATCH 2: Documentation: sysfs for physical presence interface {.n++%ݶw{.n+{G{ayʇڙ,jfhz_(階ݢj"mG?&~iOzv^m ?I