1. Make the xHCI driver to support xHCI controller v1.1 2. And a new function xhci_ring_doorbell(), it aims to add a memory barrier before ring the doorbell, ensure all TRB changes are written to memory. BRANCH=none BUG=chrome-os-partner:52684 TEST=boot from USB on Kevin rk3399 platform Change-Id: I4e38e04dc3c7d32ee4bb424a473c70956a3c3ea9 Signed-off-by: Liangfeng Wu <wulf@rock-chips.com> Reviewed-on: https://chromium-review.googlesource.com/346831 Commit-Ready: Brian Norris <briannorris@chromium.org> Tested-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Julius Werner <jwerner@chromium.org> |
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