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| author | Michael Brown | 2015-02-11 12:18:35 +0100 |
|---|---|---|
| committer | Michael Brown | 2015-02-11 12:18:35 +0100 |
| commit | 32d20fdd7e09ba878f9409f8604e14d411c83abc (patch) | |
| tree | b0b575402dd68198029e6c1b0a903bd6db4103ce /src/usr | |
| parent | [ecm] Add support for CDC-ECM USB Ethernet devices (diff) | |
| download | ipxe-32d20fdd7e09ba878f9409f8604e14d411c83abc.tar.gz ipxe-32d20fdd7e09ba878f9409f8604e14d411c83abc.tar.xz ipxe-32d20fdd7e09ba878f9409f8604e14d411c83abc.zip | |
[xhci] Delay after (possibly) forcing port link state to RxDetect
Some xHCI controllers (observed with a Renesas Electronics PCIe USB3
card) seem to require a delay after forcing the link state of USB3
ports to RxDetect. Omitting this delay causes strange behaviour
including system lockups.
Add an unconditional 20ms delay after writing the port link states.
This seems to be sufficient to avoid the problem.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/usr')
0 files changed, 0 insertions, 0 deletions