[U-Boot] [U-Boot, v3, 6/8] USB: SS: Add support for Super Speed USB interface

[Julius Werner]

>> I would reword "Additions" to "Changes" and explicitly state that these fields
>> concern the new USB 3.0 hub descriptor format, which is different and
>> exclusively applies to SuperSpeed hubs.
>
> This bit fields are actually additions to USB 3.0 framework. These
> fields are not defined in
> USB 2.0 specs, or else they are reserved there. If you insist i can
> modify this as suggested.

Yes, okay, I think we mean the same thing here. I just wanted to point
out that the USB 3.0 port status is actually a completely different
thing from the USB 2.0 port status (which is still valid for
non-SuperSpeed hubs in USB 3.0 environments, even though the spec
hasn't printed it out again). They did not just *add* a few bits to
the old status bit field, they actually *changed* existing bits (not
just reserved ones)... e.g. bit 9 means LOW_SPEED for USB 2.0 hubs but
PORT_POWER for SuperSpeed hubs. I found this very confusing when I
first read it, so I thought it might be worth making it extra obvious
through comments.