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Paul Walmsley f248076c0d OMAP2/3 GPTIMER: allow system tick GPTIMER to be changed in board-*.c files 
Add a function omap2_gp_clockevent_set_gptimer() for board-*.c files
to use in .init_irq functions to configure the system tick GPTIMER.
Practical choices at this point are GPTIMER1 or GPTIMER12.  Both of
these timers are in the WKUP powerdomain, and so are unaffected by
chip power management.  GPTIMER1 can use sys_clk as a source, for
applications where a high-resolution timer is more important than
power management.  GPTIMER12 has the special property that it has the
secure 32kHz oscillator as its source clock, which may be less prone
to glitches than the off-chip 32kHz oscillator.  But on HS devices, it
may not be available for Linux use.

It appears that most boards are fine with GPTIMER1, but BeagleBoard
should use GPTIMER12 when using a 32KiHz timer source, due to hardware bugs
in revisions B4 and below.  Modify board-omap3beagle.c to use GPTIMER12.

This patch originally used a Kbuild config option to select the GPTIMER,
but was changed to allow this to be specified in board-*.c files, per
Tony's request.

Kalle Vallo <kalle.valo@nokia.com> found a bug in an earlier version of
this patch - thanks Kalle.

Tested on Beagle rev B4 ES2.1, with and without CONFIG_OMAP_32K_TIMER, and
3430SDP.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Cc: Kalle Valo <kalle.valo@nokia.com>
2009-04-23 21:11:10 -06:00
..
boot arm: allow usage of string functions in linux/string.h 2009-03-31 13:05:36 +10:30
common clkdev: add possibility to get a clock based on the device name 2009-03-27 14:51:13 +01:00
configs arm: update omap_ldp defconfig to use smsc911x 2009-04-02 18:26:26 +01:00
include/asm Allow rwlocks to re-enable interrupts 2009-04-02 19:05:11 -07:00
kernel Simplify copy_thread() 2009-04-02 19:04:51 -07:00
lib Merge branch 'clps7500' into devel 2008-11-27 12:39:43 +00:00
mach-aaec2000 [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-at91 [ARM] 5441/1: Use pr_err on error paths in at91 pm 2009-04-01 22:18:19 +01:00
mach-clps711x [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-davinci dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
mach-ebsa110 [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-ep93xx Merge branch 'master' of git://git.marvell.com/orion into devel 2009-03-19 23:10:40 +00:00
mach-footbridge [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-gemini [ARM] arch_reset() now takes a second parameter 2009-03-30 10:40:12 +01:00
mach-h720x [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-imx i.MX1: remove fb support from mach-imx 2009-03-27 14:51:13 +01:00
mach-integrator [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-iop13xx dma-mapping: replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64) 2009-04-07 08:31:10 -07:00
mach-iop32x [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-iop33x [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-ixp4xx [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-ixp23xx [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-ixp2000 [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-kirkwood dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
mach-ks8695 Merge branch 'highmem' into devel 2009-03-24 22:47:45 +00:00
mach-l7200 [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-lh7a40x [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-loki [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-mmp [ARM] arch_reset() now takes a second parameter 2009-03-30 10:40:12 +01:00
mach-msm [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-mv78xx0 Merge branch 'master' of git://git.marvell.com/orion into devel 2009-03-19 23:10:40 +00:00
mach-mx1 V4L/DVB (11350): Add camera (CSI) driver for MX1 2009-04-06 21:43:58 -03:00
mach-mx2 i.MX21/27: remove ifdef CONFIG_FB_IMX 2009-03-27 14:51:14 +01:00
mach-mx3 V4L/DVB (11349): mx3-camera: adapt the clock definition and the driver to the new clock naming 2009-04-06 21:43:58 -03:00
mach-netx trivial: fix typo "virual" -> "virtual" 2009-03-30 15:21:57 +02:00
mach-ns9xxx Merge branch 'origin' into devel 2009-03-28 20:29:51 +00:00
mach-omap1 OMAP1: clock: Typo fix for clock in omap1 2009-04-23 21:11:07 -06:00
mach-omap2 OMAP2/3 GPTIMER: allow system tick GPTIMER to be changed in board-*.c files 2009-04-23 21:11:10 -06:00
mach-orion5x dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
mach-pnx4008 [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-pxa spi: pxa2xx_spi: introduce chipselect GPIO to simplify the common cases 2009-04-07 08:31:07 -07:00
mach-realview Merge branch 'smsc911x-armplatforms' of git://github.com/steveglen/linux-2.6 2009-04-02 23:22:11 +01:00
mach-rpc [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-s3c24a0/include/mach [ARM] S3C: Make IRQ_EINT sleep control common 2009-03-08 12:35:36 +00:00
mach-s3c2400 [ARM] remove a common set of __virt_to_bus definitions 2008-11-28 15:36:49 +00:00
mach-s3c2410 i2c-s3c2410: Simplify bus frequency calculation 2009-04-07 10:18:33 +01:00
mach-s3c2412 i2c-s3c2410: Simplify bus frequency calculation 2009-04-07 10:18:33 +01:00
mach-s3c2440 Merge branch 'origin' into devel 2009-03-28 20:29:51 +00:00
mach-s3c2442 [ARM] Arrange for platforms to select appropriate CPU support 2008-11-27 12:38:00 +00:00
mach-s3c2443 S3C24XX: Move and update IIS headers 2009-03-05 12:00:59 +00:00
mach-s3c6400 Merge branch 'next-s3c64xx-regs' of git://aeryn.fluff.org.uk/bjdooks/linux into devel 2009-03-26 22:46:22 +00:00
mach-s3c6410 [ARM] SMDK6410: Declare iodesc table static 2009-02-26 23:21:49 +00:00
mach-sa1100 [ARM] collie: fix two minor formatting nits 2009-03-25 10:15:00 +00:00
mach-shark [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-versatile [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-w90x900 [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mm [ARM] 5439/1: Do not clear bit 10 of DFSR during abort handling on ARMv6 2009-04-01 22:15:57 +01:00
nwfpe [ARM] Convert asm/uaccess.h to linux/uaccess.h 2008-09-06 11:35:55 +01:00
oprofile Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2009-03-28 14:03:14 -07:00
plat-iop dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
plat-mxc Merge branch 'i2c-for-2630-v2' of git://aeryn.fluff.org.uk/bjdooks/linux 2009-04-07 08:45:12 -07:00
plat-omap OMAP2/3 GPTIMER: allow system tick GPTIMER to be changed in board-*.c files 2009-04-23 21:11:10 -06:00
plat-orion Merge branch 'origin' into devel 2009-03-28 20:29:51 +00:00
plat-pxa [ARM] pxa: build arch/arm/plat-pxa/mfp.c only when PXA3xx or ARCH_MMP defined 2009-03-26 21:30:11 +08:00
plat-s3c i2c-s3c2410: Simplify bus frequency calculation 2009-04-07 10:18:33 +01:00
plat-s3c24xx Merge branch 'origin' into devel 2009-03-28 20:29:51 +00:00
plat-s3c64xx [ARM] S3C64XX: add AHB_CON and SPCON register address definitions 2009-03-10 16:33:42 +00:00
tools [ARM] update mach-types 2009-03-23 16:12:37 -04:00
vfp [ARM] 5440/1: Fix VFP state corruption due to preemption during VFP exceptions 2009-04-01 22:17:50 +01:00
Kconfig Merge branch 'for-rmk' of git://gitorious.org/linux-gemini/mainline into devel 2009-03-26 23:10:11 +00:00
Kconfig-nommu [ARM] 4532/1: allow configuration of processor ID 2007-10-12 23:43:02 +01:00
Kconfig.debug [ARM] 5412/1: XSCALE: add ice dcc support 2009-02-27 20:57:46 +00:00
Makefile Merge branch 'for-rmk' of git://gitorious.org/linux-gemini/mainline into devel 2009-03-26 23:10:11 +00:00