dwc3 PHY autosuspend feature

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Hi Paul,

Kishon has uncovered a possible 'situation' with dwc3 which we need to
clear up.

According to your commit 802fde98 (usb: dwc3: support new revisions of
DWC3 core), we don't need to suspend/resume the PHYs at all with any
version > 1.94a, but what we observe is that SUSPHY bits are never set.

What does that mean ? Would PHY autosuspend be an optional feature by
any chance ? Also, I can't find anywhere in the databook saying that
fiddling with SUSPHY should be avoided due to core IP controlling that
automatically.

Can you enlighten us ?

-- 
balbi

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