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Message-ID: <20180516163905.GE20425@kroah.com>
Date:   Wed, 16 May 2018 18:39:05 +0200
From:   Greg KH <greg@...ah.com>
To:     Mario.Limonciello@...l.com
Cc:     heikki.krogerus@...ux.intel.com, pmenzel+linux-usb@...gen.mpg.de,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: `ucsi_acpi: probe of USBC000:00 failed with error -12` on Dell
 XPS 13 9370

On Wed, May 16, 2018 at 04:13:31PM +0000, Mario.Limonciello@...l.com wrote:
> > > [1] When the power supply for the docking station is bigger than the
> > >     laptop's power supply, you begin to wonder what is in that thing and
> > >     stop using it after a while...
> 
> Mostly to satisfy letting the docking station work with beefier machines and
> still deliver power up to what USB PD will negotiate.
> I think they can actually run with smaller power supplies but you will need
> something "a little" bigger than regular system power supply to power the
> dock and system both.

Given the date of my docking station (2+ years old), I would be _amazed_
if it could do USB PD.  But I should go try it, my existing Dell laptop
doesn't support that, but I have an Acer here, along with some
chromebooks that do.

I guess I need to go get the latest Dell laptop, "just to test" with :)

thanks,

greg k-h

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