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Date:	Mon, 22 Dec 2014 09:37:30 -0600
From:	Felipe Balbi <>
To:	Sneeker Yeh <>
CC:	Rob Herring <>, Pawel Moll <>,
	Mark Rutland <>,
	Ian Campbell <>,
	Kumar Gala <>, Felipe Balbi <>,
	Greg Kroah-Hartman <>,
	Mathias Nyman <>,
	Grant Likely <>,
	Alan Stern <>,
	Arnd Bergmann <>, Paul Bolle <>,
	Hans de Goede <>,
	Thomas Pugliese <>,
	David Mosberger <>,
	Peter Griffin <>,
	Sylwester Nawrocki <>,
	Andrew Bresticker <>,
	Gregory CLEMENT <>,
	Yoshihiro Shimoda <>,
	<>, <>,
	<>, <>,
	Andy Green <>,
	Jassi Brar <>,
	Sneeker Yeh <>
Subject: Re: [PATCH 3/3] usb: dwc3: add a quirk for device disconnection
 issue in Synopsis dwc3 core

On Tue, Dec 16, 2014 at 10:10:28AM +0800, Sneeker Yeh wrote:
> Synopsis DesignWare USB3 IP Core integrated with a config-free
> phy needs special handling during device disconnection to avoid
> the host controller dying.
> This quirk makes sure PORT_CSC is cleared after the disable slot
> command when usb device is disconnected from internal root hub,
> otherwise, Synopsis core would fall into a state that cannot use
> any endpoint command. Consequently, device disconnection procedure
> might not be finished because sometimes endpoint need to be stop
> by endpoint stop command issuing.
> Symptom usually happens when disconnected device is keyboard,
> mouse, and hub.

you need to point us to the synopsys STARS ticket number. That's the
only way to reference this specific quirk. Add it to a comment


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