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From: Paul Bolle <pebolle-IWqWACnzNjzz+pZb47iToQ@public.gmane.org>
To: balbi-l0cyMroinI0@public.gmane.org,
	Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>
Cc: Sneeker Yeh <sneeker.yeh-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
	Ian Campbell
	<ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>,
	Kumar Gala <galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
	Greg Kroah-Hartman
	<gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>,
	Mathias Nyman
	<mathias.nyman-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	Grant Likely
	<grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
	Alan Stern
	<stern-nwvwT67g6+6dFdvTe/nMLpVzexx5G7lz@public.gmane.org>,
	Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>,
	Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	Thomas Pugliese
	<thomas.pugliese-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	David Mosberger <davidm-haPfTeumbwasTnJN9+BGXg@public.gmane.org>,
	Peter Griffin
	<peter.griffin-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
	Sylwester Nawrocki
	<s.nawrocki-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>,
	Andrew Bresticker
	<abrestic-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>,
	Gregory CLEMENT
	<gregory.clement-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
	Yoshihiro Shimoda
	<yoshihiro.shimoda.uh-zM6kxYcvzFBBDgjK7y7TUQ@public.gmane.org>,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Andy Green <andy>
Subject: Re: [PATCH 3/3] usb: dwc3: add a quirk for device disconnection issue in Synopsis dwc3 core
Date: Mon, 12 Jan 2015 18:29:43 +0100	[thread overview]
Message-ID: <1421083783.22660.69.camel@x220> (raw)
In-Reply-To: <20150112172032.GD6525@saruman>

On Mon, 2015-01-12 at 11:20 -0600, Felipe Balbi wrote:
> On Sun, Jan 11, 2015 at 11:19:55PM +0800, Sneeker Yeh wrote:
> > in case i express unclearly i also put a pdf:
> > https://drive.google.com/file/d/0B18MmcvvKjNNbDF6eEdHSzZCazA/view
> > 
> > This issue is defined by a two-way race at disconnect, between
> > 1) class driver interrupt endpoint resheduling attempts if the ISR gave an
> > ep error event due to device detach (it would try 3 times)
> > 2) Disconnect interrupt on PORTSC_CSC, which is cleared by hub thread
> > asynchronously
> > 3) The hardware IP was configured in silicon with
> >        - DWC_USB3_SUSPEND_ON_DISCONNECT_EN=1 (this is an IP configuration
> 
> yeah, aparently this is another configuration which is not exposed on
> HWPARAMS registers. Paul, can you confirm for us ? I couldn't find it on
> Databook on any of the HWPARAMS registers.

I guess you meant to ask Pawel, because I know nothing at all about all
that! 

Thanks,


Paul Bolle

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WARNING: multiple messages have this Message-ID (diff)
From: Paul Bolle <pebolle@tiscali.nl>
To: balbi@ti.com, Pawel Moll <pawel.moll@arm.com>
Cc: Sneeker Yeh <sneeker.yeh@gmail.com>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Ian Campbell <ijc+devicetree@hellion.org.uk>,
	Kumar Gala <galak@codeaurora.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Mathias Nyman <mathias.nyman@intel.com>,
	Grant Likely <grant.likely@linaro.org>,
	Alan Stern <stern@rowland.harvard.edu>,
	Arnd Bergmann <arnd@arndb.de>,
	Hans de Goede <hdegoede@redhat.com>,
	Thomas Pugliese <thomas.pugliese@gmail.com>,
	David Mosberger <davidm@egauge.net>,
	Peter Griffin <peter.griffin@linaro.org>,
	Sylwester Nawrocki <s.nawrocki@samsung.com>,
	Andrew Bresticker <abrestic@chromium.org>,
	Gregory CLEMENT <gregory.clement@free-electrons.com>,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-usb@vger.kernel.org, linux-omap@vger.kernel.org,
	Andy Green <andy.green@linaro.org>,
	Jassi Brar <jaswinder.singh@linaro.org>,
	Sneeker Yeh <Sneeker.Yeh@tw.fujitsu.com>
Subject: Re: [PATCH 3/3] usb: dwc3: add a quirk for device disconnection issue in Synopsis dwc3 core
Date: Mon, 12 Jan 2015 18:29:43 +0100	[thread overview]
Message-ID: <1421083783.22660.69.camel@x220> (raw)
In-Reply-To: <20150112172032.GD6525@saruman>

On Mon, 2015-01-12 at 11:20 -0600, Felipe Balbi wrote:
> On Sun, Jan 11, 2015 at 11:19:55PM +0800, Sneeker Yeh wrote:
> > in case i express unclearly i also put a pdf:
> > https://drive.google.com/file/d/0B18MmcvvKjNNbDF6eEdHSzZCazA/view
> > 
> > This issue is defined by a two-way race at disconnect, between
> > 1) class driver interrupt endpoint resheduling attempts if the ISR gave an
> > ep error event due to device detach (it would try 3 times)
> > 2) Disconnect interrupt on PORTSC_CSC, which is cleared by hub thread
> > asynchronously
> > 3) The hardware IP was configured in silicon with
> >        - DWC_USB3_SUSPEND_ON_DISCONNECT_EN=1 (this is an IP configuration
> 
> yeah, aparently this is another configuration which is not exposed on
> HWPARAMS registers. Paul, can you confirm for us ? I couldn't find it on
> Databook on any of the HWPARAMS registers.

I guess you meant to ask Pawel, because I know nothing at all about all
that! 

Thanks,


Paul Bolle


  reply	other threads:[~2015-01-12 17:29 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-12-16  2:10 [PATCH 0/3] Add support for Fujitsu USB host controller Sneeker Yeh
2014-12-16  2:10 ` Sneeker Yeh
2014-12-16  2:10 ` [PATCH 1/3] usb: host: f_usb20ho: add support for Fujitsu ehci/ohci USB 2.0 " Sneeker Yeh
2014-12-16  2:10   ` Sneeker Yeh
2014-12-16  9:06   ` Arnd Bergmann
2014-12-16  9:06     ` Arnd Bergmann
2014-12-17 15:33     ` Sneeker.Yeh
     [not found]       ` <830AC58E49A426478AC39824BC0FA915D8BB402BB7-BxlyW7DJwtfE0yrG4eIIn8GT06e9YD5CS4/B3AGzWvkvtab9mdV7tw@public.gmane.org>
2014-12-17 15:44         ` Arnd Bergmann
2014-12-17 15:44           ` Arnd Bergmann
2014-12-17 15:46           ` Sneeker.Yeh
2014-12-16  2:10 ` [PATCH 2/3] usb: dwc3: add Fujitsu Specific Glue layer Sneeker Yeh
2014-12-16  2:10   ` Sneeker Yeh
     [not found]   ` <1418695828-605-3-git-send-email-Sneeker.Yeh-l16TxrwUIHTQFUHtdCDX3A@public.gmane.org>
2014-12-22 15:59     ` Felipe Balbi
2014-12-22 15:59       ` Felipe Balbi
2014-12-28 17:52       ` Sneeker Yeh
2014-12-29 16:14         ` Felipe Balbi
2014-12-29 16:14           ` Felipe Balbi
2015-01-04 13:16           ` Sneeker Yeh
2015-01-05 15:52             ` Felipe Balbi
2015-01-05 15:52               ` Felipe Balbi
     [not found]         ` <CAJ1gpc0uniw3F3O9nxTLHp9M2boxrOACYDB=fgruhLOLdqg9yA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-12-30 10:12           ` Arnd Bergmann
2014-12-30 10:12             ` Arnd Bergmann
2015-01-03  1:21             ` Felipe Balbi
2015-01-03  1:21               ` Felipe Balbi
2015-01-05 15:28               ` Arnd Bergmann
2015-01-05 15:28                 ` Arnd Bergmann
2015-01-05 15:50                 ` Felipe Balbi
2015-01-05 15:50                   ` Felipe Balbi
2015-01-04 14:32             ` Sneeker Yeh
2014-12-16  2:10 ` [PATCH 3/3] usb: dwc3: add a quirk for device disconnection issue in Synopsis dwc3 core Sneeker Yeh
2014-12-16  2:10   ` Sneeker Yeh
2014-12-22 15:37   ` Felipe Balbi
2014-12-22 15:37     ` Felipe Balbi
2014-12-29  6:41     ` Sneeker Yeh
2014-12-29  8:07       ` Sneeker Yeh
     [not found]         ` <CAJ1gpc3-Wjtm54WOhO6RXjZft9BMngzyYC0-S-XnTacV-qKgMg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-12-29 16:06           ` Felipe Balbi
2014-12-29 16:06             ` Felipe Balbi
2015-01-04 12:55             ` Sneeker Yeh
     [not found]               ` <CAJ1gpc0Uu4vS2iA_o_W5NaE_QBWDYFZJio7yKvhpaR5f=qWcGA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-01-05 17:09                 ` Felipe Balbi
2015-01-05 17:09                   ` Felipe Balbi
2015-01-11 15:19                   ` Sneeker Yeh
2015-01-12 17:20                     ` Felipe Balbi
2015-01-12 17:20                       ` Felipe Balbi
2015-01-12 17:29                       ` Paul Bolle [this message]
2015-01-12 17:29                         ` Paul Bolle
2015-01-12 17:50                         ` Felipe Balbi
2015-01-12 17:50                           ` Felipe Balbi
2015-01-14  7:08                       ` Sneeker Yeh
2015-01-14 17:02                         ` Felipe Balbi
2015-01-14 17:02                           ` Felipe Balbi
2015-01-17 10:52                           ` Sneeker Yeh

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