Hi Julius,
On Tue, Apr 23, 2013 at 3:44 AM, Julius Werner <jwer...@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 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot