1What: /sys/class/tee/tee{,priv}X/rpmb_routing_model 2Date: May 2024 3KernelVersion: 6.10 4Contact: op-tee@lists.trustedfirmware.org 5Description: 6 RPMB frames can be routed to the RPMB device via the 7 user-space daemon tee-supplicant or the RPMB subsystem 8 in the kernel. The value "user" means that the driver 9 will route the RPMB frames via user space. Conversely, 10 "kernel" means that the frames are routed via the RPMB 11 subsystem without assistance from tee-supplicant. It 12 should be assumed that RPMB frames are routed via user 13 space if the variable is absent. The primary purpose 14 of this variable is to let systemd know whether 15 tee-supplicant is needed in the early boot with initramfs. 16 17What: /sys/class/tee/tee{,priv}X/revision 18Date: Jan 2026 19KernelVersion: 6.19 20Contact: op-tee@lists.trustedfirmware.org 21Description: 22 Read-only revision string reported by the TEE driver. This is 23 for diagnostics only and must not be used to infer feature 24 support. Use TEE_IOC_VERSION for capability and compatibility 25 checks. 26