From: NeilBrown <neilb@suse.de>
To: Peter Hurley <peter@hurleysoftware.com>
Cc: NeilBrown <neil@brown.name>, Mark Rutland <mark.rutland@arm.com>,
One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>,
Arnd Bergmann <arnd@arndb.de>,
devicetree@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Sebastian Reichel <sre@kernel.org>,
linux-kernel@vger.kernel.org,
GTA04 owners <gta04-owner@goldelico.com>,
Pavel Machek <pavel@ucw.cz>,
Grant Likely <grant.likely@linaro.org>,
Jiri Slaby <jslaby@suse.cz>
Subject: Re: [Gta04-owner] [PATCH 2/3] TTY: add support for tty_slave devices.
Date: Thu, 26 Mar 2015 08:17:29 +1100 [thread overview]
Message-ID: <20150326081729.700a7a6e@notabene.brown> (raw)
In-Reply-To: <5512E288.4020703@hurleysoftware.com>
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On Wed, 25 Mar 2015 12:30:00 -0400 Peter Hurley <peter@hurleysoftware.com>
wrote:
> On 03/18/2015 01:58 AM, NeilBrown wrote:
>
> > + * A "tty-slave" is a device permanently attached to a particularly
> > + * tty, typically wired to a UART.
>
> Why "permanently"?
> Is that a limitation of the implementation or design?
>
The slave is described in devicetree - that only happens for permanently
attached devices, doesn't it?
I guess that with device-tree overlays and 'capes' for boards you could have
a device attached to the uart "for this power session" rather than
"permanently", but I think it is a rather subtle distinction.
Did you have something else in mind?
NeilBrown
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next prev parent reply other threads:[~2015-03-25 21:17 UTC|newest]
Thread overview: 104+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-18 5:58 [PATCH 0/3] tty slave device support - version 3 NeilBrown
2015-03-18 5:58 ` [PATCH 1/3] TTY: use class_find_device to find port in uart_suspend/resume NeilBrown
[not found] ` <20150318055831.21025.27864.stgit-wvvUuzkyo1EYVZTmpyfIwg@public.gmane.org>
2015-03-25 16:20 ` Peter Hurley
2015-03-25 16:20 ` Peter Hurley
2015-03-29 21:49 ` [Gta04-owner] " NeilBrown
2015-03-18 5:58 ` [PATCH 2/3] TTY: add support for tty_slave devices NeilBrown
2015-03-18 9:11 ` Paul Bolle
2015-03-22 3:32 ` NeilBrown
2015-03-20 19:41 ` Pavel Machek
2015-03-22 3:42 ` [Gta04-owner] " NeilBrown
[not found] ` <20150322144209.14abc603-wvvUuzkyo1EYVZTmpyfIwg@public.gmane.org>
2015-03-22 7:58 ` Pavel Machek
2015-03-22 7:58 ` Pavel Machek
2015-03-24 10:31 ` Jiri Slaby
2015-03-30 23:45 ` NeilBrown
2015-03-25 16:30 ` Peter Hurley
2015-03-25 21:17 ` NeilBrown [this message]
2015-03-27 11:09 ` [Gta04-owner] " Peter Hurley
2015-03-31 0:33 ` NeilBrown
2015-03-18 5:58 ` [PATCH 3/3] tty/slaves: add a driver to power on/off UART attached devices NeilBrown
[not found] ` <20150318055831.21025.33670.stgit-wvvUuzkyo1EYVZTmpyfIwg@public.gmane.org>
2015-03-20 7:54 ` [Gta04-owner] " Dr. H. Nikolaus Schaller
2015-03-20 7:54 ` Dr. H. Nikolaus Schaller
[not found] ` <C53A3E5D-5AEA-4F0F-88A9-F9BC8CB0D0D6-xXXSsgcRVICgSpxsJD1C4w@public.gmane.org>
2015-03-20 8:54 ` NeilBrown
2015-03-20 8:54 ` NeilBrown
2015-03-20 9:34 ` Dr. H. Nikolaus Schaller
[not found] ` <14FB51CF-9568-4BF4-B917-2C019D992FDB-xXXSsgcRVICgSpxsJD1C4w@public.gmane.org>
2015-03-20 19:50 ` Pavel Machek
2015-03-20 19:50 ` Pavel Machek
2015-03-20 23:31 ` NeilBrown
2015-03-24 17:58 ` Dr. H. Nikolaus Schaller
2015-03-25 1:45 ` Sebastian Reichel
2015-03-25 7:59 ` Dr. H. Nikolaus Schaller
2015-03-25 15:21 ` Sebastian Reichel
2015-03-25 16:44 ` Dr. H. Nikolaus Schaller
2015-03-26 18:08 ` Sebastian Reichel
2015-03-27 9:22 ` Dr. H. Nikolaus Schaller
2015-03-27 16:31 ` Sebastian Reichel
2015-03-27 17:11 ` Dr. H. Nikolaus Schaller
2015-04-27 20:35 ` Pavel Machek
2015-04-29 6:56 ` Dr. H. Nikolaus Schaller
2015-03-25 20:53 ` Pavel Machek
2015-03-25 21:25 ` Dr. H. Nikolaus Schaller
2015-03-25 21:25 ` Dr. H. Nikolaus Schaller
[not found] ` <1F3B5E32-1330-457C-AE25-791319293C38-xXXSsgcRVICgSpxsJD1C4w@public.gmane.org>
2015-03-26 5:56 ` Pavel Machek
2015-03-26 5:56 ` Pavel Machek
2015-03-26 6:44 ` Dr. H. Nikolaus Schaller
[not found] ` <365B2C25-1782-4ADE-B620-190A4CC5E8E3-xXXSsgcRVICgSpxsJD1C4w@public.gmane.org>
2015-04-04 7:52 ` Pavel Machek
2015-04-04 7:52 ` Pavel Machek
2015-03-25 20:42 ` Pavel Machek
2015-03-25 21:22 ` Dr. H. Nikolaus Schaller
2015-03-25 21:22 ` Dr. H. Nikolaus Schaller
2015-03-20 7:54 ` [Gta04-owner] [PATCH 0/3] tty slave device support - version 3 Dr. H. Nikolaus Schaller
[not found] ` <80D7E742-4633-4CCD-B754-221387D82922-xXXSsgcRVICgSpxsJD1C4w@public.gmane.org>
2015-03-20 8:43 ` NeilBrown
2015-03-20 8:43 ` NeilBrown
2015-03-20 8:54 ` Dr. H. Nikolaus Schaller
2015-03-20 13:08 ` Sebastian Reichel
2015-03-20 13:57 ` Dr. H. Nikolaus Schaller
[not found] ` <72268D51-F993-497A-B4F9-707C8DB7155C-xXXSsgcRVICgSpxsJD1C4w@public.gmane.org>
2015-03-20 17:14 ` Sebastian Reichel
2015-03-20 17:14 ` Sebastian Reichel
2015-03-20 19:31 ` Pavel Machek
[not found] ` <20150318055437.21025.13990.stgit-wvvUuzkyo1EYVZTmpyfIwg@public.gmane.org>
2015-05-05 19:54 ` Peter Hurley
2015-05-05 19:54 ` Peter Hurley
2015-05-05 20:46 ` NeilBrown
[not found] ` <55492001.30806-WaGBZJeGNqdsbIuE7sb01tBPR1lH4CV8@public.gmane.org>
2015-05-06 5:19 ` [Gta04-owner] " Dr. H. Nikolaus Schaller
2015-05-06 5:19 ` Dr. H. Nikolaus Schaller
[not found] ` <DE60E7AA-1BF4-4A68-9638-E09F85FD5C72-xXXSsgcRVICgSpxsJD1C4w@public.gmane.org>
2015-05-06 9:27 ` Pavel Machek
2015-05-06 9:27 ` Pavel Machek
2015-05-06 11:50 ` Dr. H. Nikolaus Schaller
2015-05-06 11:50 ` Dr. H. Nikolaus Schaller
2015-05-06 12:05 ` Peter Hurley
2015-05-06 12:27 ` Dr. H. Nikolaus Schaller
2015-05-06 12:27 ` Dr. H. Nikolaus Schaller
2015-05-06 12:36 ` Mark Rutland
2015-05-06 13:28 ` Dr. H. Nikolaus Schaller
2015-05-06 13:28 ` Dr. H. Nikolaus Schaller
2015-05-06 14:15 ` Mark Rutland
2015-05-06 16:09 ` Dr. H. Nikolaus Schaller
2015-05-06 17:18 ` Mark Rutland
2015-05-07 12:46 ` Dr. H. Nikolaus Schaller
2015-05-07 12:46 ` Dr. H. Nikolaus Schaller
2015-05-07 14:30 ` Peter Hurley
2015-05-07 15:11 ` Dr. H. Nikolaus Schaller
2015-05-07 16:18 ` Peter Hurley
2015-05-07 16:57 ` Dr. H. Nikolaus Schaller
[not found] ` <B4D487C5-C260-497B-A441-6C381D53616C-xXXSsgcRVICgSpxsJD1C4w@public.gmane.org>
2015-05-07 14:56 ` Peter Hurley
2015-05-07 14:56 ` Peter Hurley
[not found] ` <554B7D33.602-WaGBZJeGNqdsbIuE7sb01tBPR1lH4CV8@public.gmane.org>
2015-05-07 15:34 ` Dr. H. Nikolaus Schaller
2015-05-07 15:34 ` Dr. H. Nikolaus Schaller
2015-05-07 15:51 ` Peter Hurley
2015-05-07 16:46 ` Dr. H. Nikolaus Schaller
2015-05-13 8:09 ` Dr. H. Nikolaus Schaller
2015-06-03 11:49 ` [PATCH RFC 0/3] UART slave device support Dr. H. Nikolaus Schaller
[not found] ` <56C579D3-E8F8-4B5A-B6E8-993B113F3461-xXXSsgcRVICgSpxsJD1C4w@public.gmane.org>
2015-06-06 13:09 ` Pavel Machek
2015-06-06 13:09 ` Pavel Machek
[not found] ` <463356C5-E3C6-432C-A1C5-71F0287F1FEE@goldelico.com>
2015-06-03 12:09 ` [Gta04-owner] [PATCH RFC 3/3] misc: Add w2g0004 gps receiver driver Christ van Willegen
2015-05-07 15:37 ` [Gta04-owner] [PATCH 0/3] tty slave device support - version 3 Peter Hurley
[not found] ` <A2594559-CA92-40C2-A06A-AC2483E85CB1-xXXSsgcRVICgSpxsJD1C4w@public.gmane.org>
2015-05-06 14:28 ` Pavel Machek
2015-05-06 14:28 ` Pavel Machek
2015-05-06 16:12 ` Dr. H. Nikolaus Schaller
[not found] ` <C68A105A-7147-4143-9B91-1A239726A780-xXXSsgcRVICgSpxsJD1C4w@public.gmane.org>
2015-06-06 13:09 ` Pavel Machek
2015-06-06 13:09 ` Pavel Machek
2015-06-06 18:53 ` Belisko Marek
2015-06-06 18:55 ` Belisko Marek
2015-05-07 15:48 ` Rob Herring
2015-05-07 15:48 ` Rob Herring
2015-05-06 11:10 ` Peter Hurley
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