kernel_optimize_test/arch/arm/plat-omap
Richard Woodruff 0f0d080709 ARM: OMAP: DMTimer: Use posted mode
This patch adds the use of write posting for the timer.  Previously, every
write could lock the requestor for almost 3x32KHz cycles.  This patch only
synchronizes before writes and reads instead of after them and it does
it on per register basis.  Doing it this way there is some chance to hide
some of the sync latency.  It also removes some needless reads when
non-posted mode is there.  With out this fix the read/writes take almost
2% CPU load @500MHz just waiting on tick timer registers.

Also define new 34xx only registers.

Signed-off-by: Richard Woodruff <r-woodruff2@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-07-03 12:24:30 +03:00
..
clock.c [ARM] omap: fix omap clk support build errors 2008-05-22 16:38:50 +01:00
common.c ARM: OMAP2: Change 24xx to use new register access 2008-04-14 10:29:37 -07:00
cpu-omap.c ARM: OMAP: Fix sleep under spinlock for cpufreq 2008-03-05 10:23:19 +02:00
debug-devices.c
debug-leds.c
devices.c ARM: OMAP: fix omap i2c init (regression) 2008-03-05 10:23:20 +02:00
dma.c ARM: OMAP: DMA: Don't mark channel active in omap_enable_channel_irq 2008-06-05 14:30:15 -07:00
dmtimer.c ARM: OMAP: DMTimer: Use posted mode 2008-07-03 12:24:30 +03:00
fb.c Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
gpio.c ARM: OMAP: use edge/level handlers from generic IRQ framework 2008-04-14 09:57:11 -07:00
i2c.c ARM: OMAP: Add helper module for board specific I2C bus registration 2008-02-08 10:38:00 -08:00
Kconfig ARM: OMAP: Fix clockevent support for hrtimers 2008-03-20 16:56:09 +02:00
mailbox.c ARM: OMAP: Fix Unbalanced enable for IRQ in omap mailbox 2008-05-09 10:25:03 -07:00
mailbox.h
Makefile ARM: OMAP: Timer32K: Move timer32k to mach-omap1 2008-04-14 09:57:12 -07:00
mcbsp.c ARM: OMAP: Request DSP memory for McBSP 2008-02-08 10:37:57 -08:00
mux.c ARM: OMAP2: Clean-up mux code 2008-04-14 09:57:13 -07:00
ocpi.c
sram-fn.S
sram.c
usb.c ARM: OMAP2: Add common register access for 24xx and 34xx 2008-04-14 10:27:25 -07:00