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+What: /sys/bus/platform/devices/dfl-fme.0/ports_num
+Date: June 2018
+KernelVersion: 4.19
+Contact: Wu Hao <hao.wu@intel.com>
+Description: Read-only. One DFL FPGA device may have more than 1
+ port/Accelerator Function Unit (AFU). It returns the
+ number of ports on the FPGA device when read it.
+
+What: /sys/bus/platform/devices/dfl-fme.0/bitstream_id
+Date: June 2018
+KernelVersion: 4.19
+Contact: Wu Hao <hao.wu@intel.com>
+Description: Read-only. It returns Bitstream (static FPGA region)
+ identifier number, which includes the detailed version
+ and other information of this static FPGA region.
+
+What: /sys/bus/platform/devices/dfl-fme.0/bitstream_metadata
+Date: June 2018
+KernelVersion: 4.19
+Contact: Wu Hao <hao.wu@intel.com>
+Description: Read-only. It returns Bitstream (static FPGA region) meta
+ data, which includes the synthesis date, seed and other
+ information of this static FPGA region.