The subsystem IDs roughly identify the PCB a component sits on. So
unless you have multiple pluggable boards in a system there should
only be one subsystem vendor and one subsystem device id.
I agree with Eric here. I question the need for subsystem IDs in the
first
place. Is there a particular OS that requires this info???
Yes, Linux for example, for certain devices.
I agree subsystem IDs are useless in most cases. But for certain
devices there is the established practice to mark certain hardware
configurations (or device firmware type/version) with these IDs,
so coreboot will have to follow.
Segher
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