Hi Peter,

quoted

- I use the port in HOST mode by plugging in a USB pendrive over the OTG-
capable
reduction ; this works OK
- I disconnect the reduction and connect it to the computer ; here I get
"timeout waiting for 00000800 in 11".

This means the BSV bit in OTGSC register wasn't unset.

Interestingly enough, transition the other way around (first use in
gadget mode
then in host mode) works fine, but if I do host mode -> gadget mode, I
get the
timeout. Do you have any hint for me?

It means your OTG VBUS does not lower than BSV (B SESSION VALID, 0.8v)
after plugging out Micro-B-TO-A cable.

Where can I measure this?

Two possible reasons:

1. You have not gpio control for vbus toggle when role switches.

This works well.

2. Your hardware has some problems that the vbus can't lower than 0.8v.

How can I check that?

quoted

btw. what is the plan about cleaning up and upstreaming all these patches
we
have here? Is anyone working on it? I'd hate to stomp on anyones'
efforts,but
I'd also like to see this mess sorted out.

We had something un-decided before, now, things almost are cleared.
But I am a little busy recently, I hope I can begin to work on it
from next week.

Ok then, I won't interfere.

Best regards,
Marek Vasut