From: Luc Verhaegen <libv@skynet.be>
To: linux-arm-kernel@lists.infradead.org
Subject: simplefb: add clock handling
Date: Wed, 13 Aug 2014 07:17:15 +0000 [thread overview]
Message-ID: <1407914239-12054-1-git-send-email-libv@skynet.be> (raw)
This is needed for the sunxi platform, where the u-boot initialized display
engine gets disabled by the clocks framework if certain clocks are not
claimed. Once these clocks are disabled, register content is lost, and there
is no turning back unless a full display driver is loaded, which kind of
beats the purpose of having simplefb running.
The lack of clock handling should plague more hardware, but so far rpi is the
best known user of simplefb, and its stepmotherly handling of the arm core
has kept these sort of issues from the kernel.
The sunxi u-boot side code can be found here:
https://groups.google.com/forum/#!topic/linux-sunxi/dPs958sIXvY
Patch 3 might be controversial, as this does not achieve anything real today,
since the status property in dt is only really evaluated when dealing with a
nodes memory. It still seems like a good idea to at least flag this memory or
node as disabled, as we really have no way back when the clocks get disabled.
Luc Verhaegen.
next reply other threads:[~2014-08-13 7:17 UTC|newest]
Thread overview: 269+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-13 7:17 Luc Verhaegen [this message]
2014-08-13 7:17 ` [PATCH 1/4] simplefb: formalize pseudo palette handling Luc Verhaegen
2014-08-13 7:25 ` David Herrmann
2014-08-13 8:46 ` Geert Uytterhoeven
2014-08-13 8:50 ` David Herrmann
2014-08-13 16:45 ` Stephen Warren
2014-08-13 7:17 ` [PATCH 2/4] simplefb: add goto error path to probe Luc Verhaegen
2014-08-13 7:27 ` David Herrmann
2014-08-14 10:29 ` Luc Verhaegen
2014-08-14 10:33 ` David Herrmann
2014-08-14 10:42 ` Luc Verhaegen
2014-08-13 7:17 ` [PATCH 3/4] simplefb: disable dt node upon remove Luc Verhaegen
2014-08-13 8:40 ` Grant Likely
2014-08-13 8:49 ` David Herrmann
2014-08-13 9:23 ` Grant Likely
2014-08-13 9:32 ` David Herrmann
2014-08-13 9:45 ` Luc Verhaegen
2014-08-13 10:19 ` [linux-sunxi] " Luc Verhaegen
2014-08-13 12:54 ` jonsmirl
2014-08-13 19:14 ` Grant Likely
2014-08-13 19:25 ` Luc Verhaegen
2014-08-13 19:58 ` Stephen Warren
2014-08-13 20:01 ` Luc Verhaegen
2014-08-13 20:00 ` Grant Likely
2014-08-13 20:19 ` Luc Verhaegen
2014-08-13 20:41 ` [linux-sunxi] " jonsmirl
2014-08-14 10:15 ` Grant Likely
2014-08-14 12:07 ` jonsmirl
2014-08-15 0:45 ` Henrik Nordström
2014-08-15 1:27 ` jonsmirl
2014-08-15 6:43 ` Maxime Ripard
2014-08-15 12:34 ` jonsmirl
2014-08-13 16:44 ` Stephen Warren
2014-08-13 17:26 ` [linux-sunxi] " jonsmirl
2014-08-13 17:34 ` Stephen Warren
2014-08-13 17:44 ` jonsmirl
2014-08-13 7:17 ` [PATCH 4/4] simplefb: add clock handling code Luc Verhaegen
2014-08-13 16:38 ` Stephen Warren
2014-08-13 16:47 ` Luc Verhaegen
2014-08-13 17:01 ` Maxime Ripard
2014-08-14 9:37 ` [linux-sunxi] " Hans de Goede
2014-08-14 10:31 ` [linux-sunxi] " Koen Kooi
2014-08-14 10:57 ` Luc Verhaegen
2014-08-14 11:18 ` Hans de Goede
2014-08-14 11:18 ` Hans de Goede
2014-08-25 12:12 ` Thierry Reding
2014-08-25 12:44 ` Maxime Ripard
2014-08-25 13:39 ` Thierry Reding
2014-08-25 13:47 ` [linux-sunxi] " Hans de Goede
2014-08-25 14:16 ` Thierry Reding
2014-08-25 14:23 ` jonsmirl
2014-08-25 14:27 ` Hans de Goede
2014-08-25 15:12 ` Thierry Reding
2014-08-25 15:18 ` Luc Verhaegen
2014-08-26 8:40 ` Thierry Reding
2014-08-26 13:22 ` Maxime Ripard
2014-08-26 13:43 ` Thierry Reding
2014-08-25 15:49 ` jonsmirl
2014-08-26 9:02 ` Hans de Goede
2014-08-25 15:01 ` Thierry Reding
2014-08-25 14:23 ` Hans de Goede
2014-08-25 14:53 ` Thierry Reding
2014-08-25 15:07 ` Maxime Ripard
2014-08-26 8:26 ` Thierry Reding
2014-08-26 9:00 ` Mark Brown
2014-08-26 9:18 ` Thierry Reding
2014-08-26 10:06 ` Mark Brown
2014-08-26 10:55 ` Thierry Reding
2014-08-26 11:33 ` Mark Brown
2014-08-26 18:40 ` Henrik Nordström
2014-08-27 7:40 ` Mark Brown
2014-08-27 8:22 ` Maxime Ripard
2014-08-27 8:37 ` Geert Uytterhoeven
2014-08-27 8:55 ` Maxime Ripard
2014-08-27 9:05 ` Geert Uytterhoeven
2014-08-27 10:32 ` Maxime Ripard
2014-08-27 10:07 ` Thierry Reding
2014-08-27 10:26 ` Henrik Nordström
2014-08-27 12:45 ` Julian Calaby
2014-08-27 13:24 ` Maxime Ripard
2014-08-25 15:08 ` jonsmirl
2014-08-25 14:58 ` Maxime Ripard
2014-08-25 15:05 ` Thierry Reding
2014-08-25 15:09 ` Luc Verhaegen
2014-08-26 7:52 ` Thierry Reding
2014-08-26 12:02 ` Luc Verhaegen
2014-08-26 12:21 ` Thierry Reding
2014-08-26 12:33 ` Luc Verhaegen
2014-08-26 14:41 ` Thierry Reding
2014-08-25 15:22 ` Maxime Ripard
2014-08-26 8:04 ` Thierry Reding
2014-08-26 8:45 ` Michal Suchanek
2014-08-26 13:53 ` Maxime Ripard
2014-08-26 14:35 ` Thierry Reding
2014-08-26 19:59 ` Hans de Goede
2014-08-27 9:31 ` Thierry Reding
2014-08-27 10:35 ` Hans de Goede
2014-08-27 12:44 ` jonsmirl
2014-08-27 12:50 ` Hans de Goede
2014-08-27 12:56 ` jonsmirl
2014-08-27 13:05 ` Thierry Reding
2014-08-27 12:56 ` Thierry Reding
2014-08-27 13:44 ` Hans de Goede
2014-08-27 14:16 ` Thierry Reding
2014-08-28 12:15 ` Hans de Goede
2014-08-28 13:22 ` jonsmirl
2014-08-28 14:20 ` Geert Uytterhoeven
2014-08-28 14:33 ` jonsmirl
2014-08-28 14:37 ` Geert Uytterhoeven
2014-08-28 15:11 ` jonsmirl
2014-08-28 16:25 ` Michal Suchanek
2014-08-28 16:34 ` jonsmirl
2014-08-28 16:50 ` Luc Verhaegen
2014-08-28 20:31 ` Michal Suchanek
2014-08-29 7:16 ` Thierry Reding
2014-08-29 7:01 ` Thierry Reding
2014-08-29 7:23 ` Hans de Goede
2014-08-29 8:12 ` Thierry Reding
2014-08-29 14:12 ` Maxime Ripard
2014-08-29 14:38 ` Thierry Reding
2014-08-29 15:25 ` Michal Suchanek
2014-09-02 9:25 ` Maxime Ripard
2014-09-27 23:56 ` Mike Turquette
2014-09-29 8:06 ` Thierry Reding
2014-09-29 8:27 ` Geert Uytterhoeven
2014-09-29 8:54 ` Thierry Reding
2014-09-29 9:10 ` Geert Uytterhoeven
2014-09-29 9:29 ` Thierry Reding
2014-09-29 9:44 ` Michal Suchanek
2014-09-29 10:40 ` Thierry Reding
2014-09-29 9:23 ` Maxime Ripard
2014-09-29 10:18 ` Thierry Reding
2014-09-29 10:35 ` Geert Uytterhoeven
2014-09-29 10:44 ` Thierry Reding
2014-09-29 11:32 ` Geert Uytterhoeven
2014-09-29 14:00 ` Thierry Reding
2014-09-29 11:34 ` Maxime Ripard
2014-09-29 13:54 ` Thierry Reding
2014-09-29 15:57 ` Maxime Ripard
2014-09-30 4:59 ` Thierry Reding
2014-09-30 7:46 ` Maxime Ripard
2014-09-30 11:43 ` Hans de Goede
2014-09-30 11:46 ` Thierry Reding
2014-09-30 21:37 ` Mike Turquette
2014-10-01 7:30 ` Thierry Reding
2014-10-01 18:17 ` Mike Turquette
2014-10-02 8:12 ` Thierry Reding
2014-09-29 11:00 ` Julian Calaby
2014-09-29 13:21 ` Thierry Reding
2014-09-29 14:46 ` Julian Calaby
2014-09-29 15:19 ` Thierry Reding
2014-09-29 15:42 ` Michal Suchanek
2014-09-30 0:10 ` Julian Calaby
2014-09-29 11:46 ` Maxime Ripard
2014-09-29 13:47 ` Thierry Reding
2014-09-29 15:04 ` Michal Suchanek
2014-09-29 15:49 ` Thierry Reding
2014-09-29 16:39 ` Michal Suchanek
2014-09-29 15:55 ` Mark Brown
2014-09-30 5:09 ` Thierry Reding
2014-09-30 17:39 ` Mark Brown
2014-10-01 7:41 ` Thierry Reding
2014-10-01 11:10 ` Javier Martinez Canillas
2014-10-01 12:32 ` Mark Brown
2014-10-01 12:48 ` Thierry Reding
2014-10-01 17:05 ` Mark Brown
2014-10-01 17:26 ` Hans de Goede
2014-10-01 17:54 ` jonsmirl
2014-10-01 18:12 ` Stephen Warren
2014-10-01 18:16 ` Luc Verhaegen
2014-10-02 6:42 ` Hans de Goede
2014-10-02 12:22 ` jonsmirl
2014-10-02 12:39 ` Hans de Goede
2014-10-02 12:56 ` jonsmirl
2014-10-02 13:14 ` Hans de Goede
2014-10-02 13:27 ` jonsmirl
2014-10-02 13:33 ` Hans de Goede
2014-10-02 13:40 ` jonsmirl
2014-10-02 14:08 ` Hans de Goede
2014-10-02 14:16 ` jonsmirl
2014-10-02 14:21 ` Hans de Goede
2014-10-02 14:41 ` jonsmirl
2014-10-02 14:50 ` Hans de Goede
2014-10-02 15:14 ` jonsmirl
2014-10-02 15:30 ` jonsmirl
2014-10-02 15:38 ` Hans de Goede
2014-10-02 15:36 ` Michal Suchanek
2014-10-02 23:31 ` Julian Calaby
2014-10-03 7:56 ` Hans de Goede
2014-11-11 16:15 ` Grant Likely
2014-10-02 14:18 ` Maxime Ripard
2014-10-02 14:23 ` Hans de Goede
2014-10-02 14:17 ` Michal Suchanek
2014-10-02 13:59 ` Michal Suchanek
2014-10-02 13:23 ` Michal Suchanek
2014-10-02 13:34 ` jonsmirl
2014-10-02 13:40 ` Hans de Goede
2014-10-02 13:44 ` jonsmirl
2014-10-02 13:46 ` Geert Uytterhoeven
2014-10-02 13:49 ` jonsmirl
2014-10-02 19:15 ` Geert Uytterhoeven
2014-10-02 15:49 ` Stephen Warren
2014-10-03 11:16 ` Hans de Goede
2014-10-03 11:45 ` Tomi Valkeinen
2014-10-03 11:53 ` Hans de Goede
2014-10-01 11:31 ` Mark Brown
2014-09-29 16:28 ` Maxime Ripard
2014-09-29 16:58 ` Luc Verhaegen
2014-09-29 22:02 ` Luc Verhaegen
2014-09-30 5:39 ` Thierry Reding
2014-09-30 8:03 ` Maxime Ripard
2014-09-30 11:02 ` Thierry Reding
2014-09-30 12:41 ` Mark Brown
2014-09-30 12:50 ` jonsmirl
2014-09-30 5:21 ` Thierry Reding
2014-09-30 7:52 ` Maxime Ripard
2014-09-30 8:54 ` Thierry Reding
2014-09-30 9:38 ` Michal Suchanek
2014-09-30 11:31 ` Thierry Reding
2014-09-30 14:12 ` Michal Suchanek
2014-09-30 12:29 ` Maxime Ripard
2014-09-29 16:11 ` Mark Brown
2014-09-30 6:03 ` Thierry Reding
2014-09-30 18:00 ` Mark Brown
2014-10-01 8:14 ` Thierry Reding
2014-10-01 12:20 ` Mark Brown
2014-10-01 12:48 ` Thierry Reding
2014-10-01 13:01 ` jonsmirl
2014-10-01 13:17 ` Michal Suchanek
2014-10-01 13:40 ` jonsmirl
2014-10-01 17:17 ` Mark Brown
2014-10-01 18:43 ` Geert Uytterhoeven
2014-10-02 8:30 ` Thierry Reding
2014-10-02 8:27 ` Thierry Reding
2014-10-01 8:17 ` Thierry Reding
2014-09-29 17:51 ` jonsmirl
2014-09-29 18:06 ` Michal Suchanek
2014-08-27 13:56 ` Maxime Ripard
2014-08-27 14:30 ` Thierry Reding
2014-08-27 13:43 ` Maxime Ripard
2014-08-26 21:02 ` Maxime Ripard
2014-08-27 6:54 ` Thierry Reding
2014-08-27 8:00 ` Hans de Goede
2014-08-27 9:37 ` Thierry Reding
2014-08-27 8:45 ` Maxime Ripard
2014-08-27 9:52 ` Thierry Reding
2014-08-27 15:42 ` Maxime Ripard
2014-08-27 20:57 ` Michal Suchanek
2014-08-28 10:08 ` Thierry Reding
2014-08-29 5:13 ` Michal Suchanek
2014-08-29 6:19 ` Thierry Reding
2014-08-29 6:48 ` Michal Suchanek
2014-08-29 7:08 ` Thierry Reding
2014-08-28 10:11 ` Thierry Reding
2014-08-28 10:32 ` Michal Suchanek
2014-08-28 20:46 ` Maxime Ripard
2014-08-29 6:29 ` Thierry Reding
2014-08-29 13:57 ` Maxime Ripard
2014-08-29 14:31 ` Thierry Reding
2014-08-27 8:17 ` Henrik Nordström
2014-08-25 15:25 ` Andreas Färber
2014-08-26 13:19 ` Maxime Ripard
2014-08-13 7:54 ` simplefb: add clock handling David Herrmann
2014-08-13 8:11 ` Luc Verhaegen
2014-08-13 8:21 ` [linux-sunxi] " Koen Kooi
2014-08-13 8:36 ` Hans de Goede
2014-08-13 10:16 ` Koen Kooi
2014-08-13 10:24 ` David Herrmann
2014-08-13 11:36 ` Hans de Goede
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