What: /sys/bus/dfl/devices/dfl_dev.X/type Date: Aug 2020 KernelVersion: 5.10 Contact: Xu Yilun Description: Read-only. It returns type of DFL FIU of the device. Now DFL supports 2 FIU types, 0 for FME, 1 for PORT. Format: 0x%x What: /sys/bus/dfl/devices/dfl_dev.X/feature_id Date: Aug 2020 KernelVersion: 5.10 Contact: Xu Yilun Description: Read-only. It returns feature identifier local to its DFL FIU type. Format: 0x%x