linux-omap.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
* [RFC 0/5] Clocksource driver for OMAP SoCs
@ 2014-03-13 20:35 Joel Fernandes
  2014-03-13 20:35 ` [RFC 1/5] ARM: dts: am33xx: Add clock nodes for timer1 and timer2 Joel Fernandes
                   ` (4 more replies)
  0 siblings, 5 replies; 19+ messages in thread
From: Joel Fernandes @ 2014-03-13 20:35 UTC (permalink / raw)
  To: Tony Lindgren, Rob Herring, Tero Kristo, Nishanth Menon,
	Suman Anna, Felipe Balbi
  Cc: Linux OMAP List, Linux ARM Kernel List, Linux Kernel Mailing List

Here's an RFC series for clocksource migration of OMAP timers.
This attempt is going to step-by-step attempt to migrate platforms
such that everything is kept working smoothly during migration. Currently
the series introduces a clocksource driver and migrates AM335x platform
to discuss the general idea.

The plan is to move dmtimer to clocksource (infact make a copy for now
so that platforms not migrated still work). Then we add a per-SoC clocksource
registration and select a timer as each of them are initialized by clocksource
(suggested in [1]).

We also add support for a generic timer init function which is called for
every SoC for which support in clocksource driver is available. And, we
call a generic OMAP power up function which is introduced in the mach-omap
layer in this series.

Lastly, we add clock nodes for the system timers, and setup a default-parent
so that the parent clocks are setup correctly. Due to this, the series depends
on Tero's series [2].

Please note- this effort is for system timer support. This is the first basic
step. Converting dmtimer to use any other generic framework is a completely
different topic and should not be discussed in this thread. It is something
that can be done only _after_ the work done in this series is completed, thanks.

[1] https://lkml.org/lkml/2013/11/23/88
[2] http://www.spinics.net/lists/linux-omap/msg103069.html

Joel Fernandes (5):
  ARM: dts: am33xx: Add clock nodes for timer1 and timer2
  ARM: dts: am33xx: Set parent clock for timer through DT
  ARM: OMAP2+: timer: Add clocksource initialization and powerup
    support
  clocksource: omap-timer: Introduce clocksource driver for OMAP SoCs
  ARM: AM33xx: Move to using omap_generic_timer_init for init_time

 arch/arm/boot/dts/am33xx.dtsi       |    4 +
 arch/arm/mach-omap2/board-generic.c |    2 +-
 arch/arm/mach-omap2/common.h        |    1 +
 arch/arm/mach-omap2/timer.c         |   28 +
 drivers/clocksource/Makefile        |    1 +
 drivers/clocksource/omap-timer.c    | 1157 +++++++++++++++++++++++++++++++++++
 drivers/clocksource/omap-timer.h    |  422 +++++++++++++
 7 files changed, 1614 insertions(+), 1 deletion(-)
 create mode 100644 drivers/clocksource/omap-timer.c
 create mode 100644 drivers/clocksource/omap-timer.h

-- 
1.7.9.5

^ permalink raw reply	[flat|nested] 19+ messages in thread

end of thread, other threads:[~2014-03-15  1:11 UTC | newest]

Thread overview: 19+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2014-03-13 20:35 [RFC 0/5] Clocksource driver for OMAP SoCs Joel Fernandes
2014-03-13 20:35 ` [RFC 1/5] ARM: dts: am33xx: Add clock nodes for timer1 and timer2 Joel Fernandes
2014-03-13 20:35 ` [RFC 2/5] ARM: dts: am33xx: Set parent clock for timer through DT Joel Fernandes
2014-03-14  8:08   ` Tero Kristo
2014-03-13 20:35 ` [RFC 3/5] ARM: OMAP2+: timer: Add clocksource initialization and powerup support Joel Fernandes
2014-03-13 21:52   ` Rob Herring
2014-03-13 23:36     ` Joel Fernandes
2014-03-14  8:03       ` Tero Kristo
2014-03-14 21:09       ` Kevin Hilman
2014-03-14 21:16         ` Rob Herring
2014-03-13 20:35 ` [RFC 4/5] clocksource: omap-timer: Introduce clocksource driver for OMAP SoCs Joel Fernandes
2014-03-13 20:48   ` Tony Lindgren
2014-03-13 23:49     ` Joel Fernandes
2014-03-14 15:52       ` Tony Lindgren
2014-03-14 19:32         ` Joel Fernandes
2014-03-14 19:33           ` Joel Fernandes
2014-03-15  0:13   ` Suman Anna
2014-03-15  1:11     ` Joel Fernandes
2014-03-13 20:35 ` [RFC 5/5] ARM: AM33xx: Move to using omap_generic_timer_init for init_time Joel Fernandes

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).