[Bug 258057] muge(4) crashes with large tx batches

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 28 Sep 2021 12:45:57 UTC

--- Comment #26 from Dan Kotowski <dan.kotowski@a9development.com> ---
I believe that Bjoern and I have earlier revisions of the boards, while Mark
has a more recent one. And I know Solid-Run had to fix at least 1 USB erata
(flipped TX/RX on 1 port) so I can imagine there may be others.

Of note, jnettlet has mentioned the following:

I have [usb powersaving] turned off on all my boards.  Synopsis did have a bug
with powersave and hubs in their IP which we have the errata workaround enabled
for...but even then some devices are just flaky

a patch is merged in [Linux].  the feature is called parkmode

I am setting that in UEFI though.  Unless maybe BSD is re-enabling it

If it helps, this is the raw DSDT ASL for the USB parts of the firmware:


You can easily see it setting `snps,dis_rxdet_inp3_quirk` - perhaps we ignore
or unset this?


 * @dis_rxdet_inp3_quirk: set if we disable Rx.Detect in P3

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