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

[Vivek Gautam]

Hi Julius,


On Tue, Apr 23, 2013 at 3:44 AM, Julius Werner <jwerner at chromium.org> wrote:
>>> 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.

Fair enough, i shall change this accordingly, Thanks !!



-- 
Best Regards
Vivek