tmp_suning_uos_patched/arch/arm/plat-omap
Paul Walmsley 64ce2907b1 ARM: OMAP2: skip unnecessary TLDR write during non-autoreload for gptimer
The GPTIMER TLDR register does not need to be written if the GPTIMER
is not in autoreload mode.  This is the usual case for dynamic tick-enabled
kernels.

Simulation data indicate that skipping the read that occurs as part of
the write should save at least 300-320 ns for each GPTIMER1 timer
reprogram.  (This assumes L4-Wakeup is at 19MHz and GPTIMER write
posting is enabled.)  Skipping the write itself probably won't have
much impact since it should be posted on the OCP interconnect.

Tested on 2430SDP and 3430SDP.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Richard Woodruff <r-woodruff2@ti.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-12-10 17:36:34 -08:00
..
include/mach ARM: OMAP2: Use omap_rev() instead of system_rev 2008-12-10 17:36:31 -08:00
clock.c ARM: OMAP: Fix debugfs_create_*'s error checking method for arm/plat-omap 2008-11-04 13:35:07 -08:00
common.c Merge branch 'omap-all' into devel 2008-10-14 22:24:42 +01:00
cpu-omap.c [ARM] Convert asm/io.h to linux/io.h 2008-09-06 12:10:45 +01:00
debug-devices.c ARM: OMAP: Switch to gpio_request/free calls 2008-12-10 17:35:30 -08:00
debug-leds.c ARM: OMAP: switch to standard gpio get/set calls 2008-12-10 17:35:25 -08:00
devices.c Merge branch 'fixes' into for-linus 2008-10-15 23:16:07 +01:00
dma.c [ARM] omap: fix lots of 'Using plain integer as NULL pointer' 2008-09-05 17:02:33 +01:00
dmtimer.c ARM: OMAP2: skip unnecessary TLDR write during non-autoreload for gptimer 2008-12-10 17:36:34 -08:00
fb.c [ARM] Convert asm/io.h to linux/io.h 2008-09-06 12:10:45 +01:00
gpio.c ARM: OMAP: minor gpio bugfixes 2008-12-10 17:35:27 -08:00
i2c.c [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach 2008-08-07 09:55:48 +01:00
io.c ARM: OMAP3: Add minimal omap3430 support 2008-10-09 17:51:41 +03:00
Kconfig ARM: OMAP3: Add minimal omap3430 support 2008-10-09 17:51:41 +03:00
mailbox.c [ARM] Convert asm/io.h to linux/io.h 2008-09-06 12:10:45 +01:00
mailbox.h ARM: OMAP: Add mailbox support for IVA 2007-05-09 10:37:10 +01:00
Makefile [ARM] omap: allow ioremap() to use our fixed IO mappings 2008-09-05 17:02:29 +01:00
mcbsp.c ARM: OMAP: Fixes to omap_mcbsp_request function 2008-10-08 10:01:41 +03:00
mux.c [ARM] Convert asm/io.h to linux/io.h 2008-09-06 12:10:45 +01:00
ocpi.c [ARM] Convert asm/io.h to linux/io.h 2008-09-06 12:10:45 +01:00
sram.c ARM: OMAP2: Use omap_rev() instead of system_rev 2008-12-10 17:36:31 -08:00
usb.c [ARM] Convert asm/io.h to linux/io.h 2008-09-06 12:10:45 +01:00