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| author | Bin Meng <bmeng.cn@gmail.com> | 2017-07-19 13:51:21 (GMT) |
|---|---|---|
| committer | Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com> | 2017-08-08 08:42:23 (GMT) |
| commit | 59156a576c9e6f240299cbf5507ca2a4714ceeb5 (patch) | |
| tree | be2ee120a4b4e7cdb9fbf7e4cf8833fc2d26edbb /configs/ls1021atwr_sdcard_qspi_defconfig | |
| parent | cc0bad97ab50cb1efdc57d0d2144cb3cf79d9601 (diff) | |
| download | u-boot-59156a576c9e6f240299cbf5507ca2a4714ceeb5.tar.xz | |
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 'configs/ls1021atwr_sdcard_qspi_defconfig')
0 files changed, 0 insertions, 0 deletions