diff options
| author | Bin Meng <bmeng.cn@gmail.com> | 2017-07-19 21:51:21 +0800 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2017-07-28 23:34:37 +0200 |
| commit | 78e30987520870e0fc1d6b1cba5b46ce86dfff59 (patch) | |
| tree | 882420ab623b3002cef3e2c585f0613b8abb399c /board/technologic | |
| parent | 196ef8323c53b5d43fd9c244daaca1e2172ca47c (diff) | |
usb: xhci: Enable TT to support LS/FS devices behind a HS hub
So far LS/FS devices directly attached to xHC root port can be
successfully enumerated by xHCI driver, but if they are connected
behind a hub, the enumeration process fails to address the device.
It turns out xHCI driver still misses a part that in the device's
input slot context, all Transaction Translator (TT) related fields
are not programmed. The xHCI spec defines how to enable TT.
Now LS/FS devices like USB keyboard/mouse can be enumerated behind
a high speed hub.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'board/technologic')
0 files changed, 0 insertions, 0 deletions