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1What: /sys/class/tee/tee{,priv}X/rpmb_routing_model2Date: May 20243KernelVersion: 6.104Contact: op-tee@lists.trustedfirmware.org5Description:6 RPMB frames can be routed to the RPMB device via the7 user-space daemon tee-supplicant or the RPMB subsystem8 in the kernel. The value "user" means that the driver9 will route the RPMB frames via user space. Conversely,10 "kernel" means that the frames are routed via the RPMB11 subsystem without assistance from tee-supplicant. It12 should be assumed that RPMB frames are routed via user13 space if the variable is absent. The primary purpose14 of this variable is to let systemd know whether15 tee-supplicant is needed in the early boot with initramfs.16