What:		/sys/bus/cxl/devices/memX/firmware_version
Date:		December, 2020
KernelVersion:	v5.12
Contact:	linux-cxl@vger.kernel.org
Description:
		(RO) "FW Revision" string as reported by the Identify
		Memory Device Output Payload in the CXL-2.0
		specification.

What:		/sys/bus/cxl/devices/memX/ram/size
Date:		December, 2020
KernelVersion:	v5.12
Contact:	linux-cxl@vger.kernel.org
Description:
		(RO) "Volatile Only Capacity" as bytes. Represents the
		identically named field in the Identify Memory Device Output
		Payload in the CXL-2.0 specification.

What:		/sys/bus/cxl/devices/memX/pmem/size
Date:		December, 2020
KernelVersion:	v5.12
Contact:	linux-cxl@vger.kernel.org
Description:
		(RO) "Persistent Only Capacity" as bytes. Represents the
		identically named field in the Identify Memory Device Output
		Payload in the CXL-2.0 specification.

What:		/sys/bus/cxl/devices/*/devtype
Date:		June, 2021
KernelVersion:	v5.14
Contact:	linux-cxl@vger.kernel.org
Description:
		CXL device objects export the devtype attribute which mirrors
		the same value communicated in the DEVTYPE environment variable
		for uevents for devices on the "cxl" bus.

What:		/sys/bus/cxl/devices/portX/uport
Date:		June, 2021
KernelVersion:	v5.14
Contact:	linux-cxl@vger.kernel.org
Description:
		CXL port objects are enumerated from either a platform firmware
		device (ACPI0017 and ACPI0016) or PCIe switch upstream port with
		CXL component registers. The 'uport' symlink connects the CXL
		portX object to the device that published the CXL port
		capability.

What:		/sys/bus/cxl/devices/portX/dportY
Date:		June, 2021
KernelVersion:	v5.14
Contact:	linux-cxl@vger.kernel.org
Description:
		CXL port objects are enumerated from either a platform firmware
		device (ACPI0017 and ACPI0016) or PCIe switch upstream port with
		CXL component registers. The 'dportY' symlink identifies one or
		more downstream ports that the upstream port may target in its
		decode of CXL memory resources.  The 'Y' integer reflects the
		hardware port unique-id used in the hardware decoder target
		list.