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df88acbbdc
linux/arch/arm/mach-omap2
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Aaro Koskinen df88acbbdc ARM: OMAP: gptimer min_delta_ns corrected 
When 32 kHz timer is used the min_delta_ns should be initialized so
that it reflects the timer programming cost. A write to the timer
device will be usually posted, but it takes roughly 3 cycles before
it is effective. If the timer is reprogrammed before that, the CPU
will stall until the previous write completes. This was pointed out by
Richard Woodruff.

Since the lower bound for min_delta_ns is 1000, the change is visible
only with tick rates less than 3 MHz.

Also note that the old value is incorrect for 32 kHz also due to
a rounding error, and it can cause the timer queue to hang (due to
clockevent code trying to program the timer with zero ticks).

Signed-off-by: Aaro Koskinen <Aaro.Koskinen@nokia.com>
Reviewed-by: Richard Woodruff <r-woodruff2@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-01-29 09:27:00 -08:00
..
board-2430sdp.c omap mmc: Add low-level initialization for hsmmc controller 2008-12-10 17:37:17 -08:00
board-apollon.c ARM: OMAP: Fix gpio by switching to generic gpio calls, v2 2009-01-15 13:09:52 +02:00
board-generic.c omap mmc: Remove broken MMC init code 2008-12-10 17:37:16 -08:00
board-h4.c omap mmc: Remove broken MMC init code 2008-12-10 17:37:16 -08:00
board-ldp.c ARM: OMAP: Fix gpio by switching to generic gpio calls, v2 2009-01-15 13:09:52 +02:00
board-omap3beagle.c ARM: OMAP: Fix compile for beagle 2009-01-15 13:09:53 +02:00
board-omap3pandora.c omap mmc: Add low-level initialization for hsmmc controller 2008-12-10 17:37:17 -08:00
board-overo.c omap mmc: Add low-level initialization for hsmmc controller 2008-12-10 17:37:17 -08:00
clock24xx.c [ARM] Convert asm/bitops.h to linux/bitops.h 2008-09-06 12:13:59 +01:00
clock24xx.h Merge branch 'i2c-next' of git://aeryn.fluff.org.uk/bjdooks/linux 2009-01-05 18:58:06 -08:00
clock34xx.c ARM: OMAP2: Use omap_rev() instead of system_rev 2008-12-10 17:36:31 -08:00
clock34xx.h omap mmc: Add better MMC low-level init 2008-12-10 17:37:16 -08:00
clock.c Merge branch 'omap-all' into devel 2008-10-14 22:24:42 +01:00
clock.h ARM: OMAP2: Misc updates from linux-omap tree 2008-10-06 15:49:36 +03:00
clockdomain.c [ARM] OMAP: clockdomain: add clkdm_get_pwrdm() 2008-08-21 21:30:19 +01:00
clockdomains.h ARM: OMAP2: Clockdomain: Integrate OMAP3 clocks with clockdomain code 2008-08-19 11:08:45 +03:00
cm-regbits-24xx.h ARM: OMAP2: Clockdomain: Encode OMAP2/3 clockdomains 2008-08-19 11:08:44 +03:00
cm-regbits-34xx.h ARM: OMAP2: Clockdomain: Encode OMAP2/3 clockdomains 2008-08-19 11:08:44 +03:00
cm.h [ARM] omap: Fix IO_ADDRESS() macros 2008-09-05 17:02:31 +01:00
control.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
devices.c ARM: OMAP: Fix hsmmc init, v2 2009-01-29 08:57:16 -08:00
gpmc.c ARM: OMAP: Fix compiler warnings in gpmc.c 2008-11-04 13:35:06 -08:00
id.c ARM: OMAP: Fix omap34xx revision detection for ES3.1 2009-01-29 08:57:16 -08:00
io.c Merge branch 'omap-all' into devel 2008-10-14 22:24:42 +01:00
irq.c ARM: OMAP3: Warn about spurious interrupts 2008-12-10 17:36:52 -08:00
Kconfig ARM: OMAP3: Add basic support for Pandora handheld console 2008-12-10 17:36:54 -08:00
mailbox.c [ARM] Convert asm/io.h to linux/io.h 2008-09-06 12:10:45 +01:00
Makefile omap mmc: Add low-level initialization for hsmmc controller 2008-12-10 17:37:17 -08:00
Makefile.boot [ARM] 3145/1: OMAP 3a/5: Add support for omap24xx 2005-11-10 14:26:51 +00:00
mcbsp.c ARM: OMAP: Fix McBSP spin_lock deadlock 2009-01-29 08:57:12 -08:00
memory.c Merge branch 'omap-all' into devel 2008-10-14 22:24:42 +01:00
memory.h ARM: OMAP2: Misc updates from linux-omap tree 2008-10-06 15:49:36 +03:00
mmc-twl4030.c omap mmc: Add low-level initialization for hsmmc controller 2008-12-10 17:37:17 -08:00
mmc-twl4030.h omap mmc: Add low-level initialization for hsmmc controller 2008-12-10 17:37:17 -08:00
mux.c ARM: OMAP3: Pin multiplexing updates for 24xx and 34xx 2008-12-10 17:36:54 -08:00
pm.c [ARM] Convert asm/io.h to linux/io.h 2008-09-06 12:10:45 +01:00
powerdomain.c [ARM] OMAP3 pwrdm: add hardware save-and-restore (SAR) support 2008-08-21 21:26:39 +01:00
powerdomains24xx.h ARM: OMAP2: Powerdomain: Add OMAP2 powerdomains 2008-08-19 11:08:42 +03:00
powerdomains34xx.h ARM: OMAP: Powerdomain: Add OMAP3 powerdomains 2008-08-19 11:08:43 +03:00
powerdomains.h ARM: OMAP: Powerdomain: Add OMAP3 powerdomains 2008-08-19 11:08:43 +03:00
prcm-common.h ARM: OMAP: Powerdomain: Add OMAP3 powerdomains 2008-08-19 11:08:43 +03:00
prcm.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
prm-regbits-24xx.h ARM: OMAP2: Powerdomain: Add OMAP2 powerdomains 2008-08-19 11:08:42 +03:00
prm-regbits-34xx.h ARM: OMAP: Powerdomain: Add OMAP3 powerdomains 2008-08-19 11:08:43 +03:00
prm.h Merge unstable branch 'omap-rmk' 2008-10-03 11:52:33 +01:00
sdrc.h [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
serial.c Merge branch 'omap-all' into devel 2008-10-14 22:24:42 +01:00
sleep24xx.S ARM: OMAP2: Move sleep.S into sleep24xx.S 2008-10-06 15:49:15 +03:00
sram34xx.S ARM: OMAP3: Add minimal omap3430 support 2008-10-09 17:51:41 +03:00
sram242x.S [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
sram243x.S [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
timer-gp.c ARM: OMAP: gptimer min_delta_ns corrected 2009-01-29 09:27:00 -08:00
usb-tusb6010.c ARM: OMAP: Switch to gpio_request/free calls 2008-12-10 17:35:30 -08:00