Re: How to proceed: usci_acpi: PPM init failed (-110)

["Samuel Čavoj" <samuel@cavoj.net>]

On 25.08.2021 11:02, Heikki Krogerus wrote:
> On Tue, Aug 24, 2021 at 06:49:42PM +0200, Samuel Čavoj wrote:
> > On 24.08.2021 13:24, Heikki Krogerus wrote:
> > > On Mon, Aug 23, 2021 at 08:06:26PM +0200, Samuel Čavoj wrote:
> > > > Hello,
> > > > 
> > > > The driver times out talking to the PPM (the message pops up 60 seconds
> > > > after loading the module, the timeout in ucsi_acpi_sync_write).
> > > > The command which times out is the first one after resetting the PPM in
> > > > ucsi_init, enabling basic notifications.
> > > > 
> > > > The laptop in question is an ASUS UM325U, with the AMD Ryzen 5700U SoC.
> > > > 
> > > > The ACPI description of the USBC000 device looks reasonable to my eyes,
> > > > but I am not an expert. The _DSM Method copies the UCSI OpRegion to (or
> > > > from) EC memory. I can provide a dump if needed.
> > > > 
> > > > I am looking for guidance on how to proceed, I am not too familiar with
> > > > the UCSI other than peeking at the spec for a short while.
> > > > 
> > > > Looking the error up online leads to various discussions usually ending
> > > > with installing an nvidia driver, however mine does not have any
> > > > dedicated GPU.
> > > 
> > > Can you send full dmesg output, and acpidump:
> > > 
> > >         % dmesg > dmesg.dump
> > >         % acpidump -o acpi.dump
> > > 
> > > If enabling the notifications fails, then I'm not sure the EC firmware
> > > on this board actually supports UCSI. That would not be unheard-of
> > > situation.
> > > 
> > > thanks,
> > > 
> > > -- 
> > > heikki
> > 
> > Hello,
> > 
> > I've attached the respective dumps, I hope they arrive in one piece.
> > 
> > I've tried poking at the firmware in Windows, using UcsiControl.exe.
> > 
> > Running
> > 
> >     UcsiControl.exe Send 0 1
> > 
> > times out after a couple seconds, I assume this is related. The command
> > is supposed to reset the controller, but maybe it then runs some commands
> > as well. Running
> > 
> >     UcsiControl.exe Send 0 6
> > 
> > responds with a result instantly, supposedly this is the GetCapability
> > command. I don't know how to interpret the results, but I can attach
> > them if needed. The program is documented at [1].
> > 
> > This leads me to think that the firmware does actually support it, but
> > has some kind of problem.
> 
> The reset command does not generate command completion event in UCSI
> (that's why we poll the responce separately in the driver, just like
> the spec tells us to do). So that command timing out may be expected.

That makes sense.

> You said that enabling the notifications with Set Notifications Enable
> fails, so can you try this:
> 
>         UcsiControl.exe Send 0 00010005

the command finishes instantly and does not seem to produce any error.

    PS C:\Program Files (x86)\USBTest\x64> .\UcsiControl.exe Send 0 00010005
    COMMAND:
    AsUInt64: 10005
    Command: 5
    DataLength: 0
    
    MESSAGE IN is empty.

Thank you,
Samuel