Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) What:		/sys/devices/.../sun
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) Date:		October 2012
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) Contact:	Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 		The file contains a Slot-unique ID which provided by the _SUN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 		method in the ACPI namespace. The value is written in Advanced
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 		Configuration and Power Interface Specification as follows:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 		"The _SUN value is required to be unique among the slots of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 		the same type. It is also recommended that this number match
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 		the slot number printed on the physical slot whenever possible."
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 		So reading the sysfs file, we can identify a physical position
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 		of the slot in the system.