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baf46b4e37
linux/drivers
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Aaro Koskinen baf46b4e37 i2c: OMAP2/3: Fix scll/sclh calculations 
Fix scll/sclh calculations for HS and fast modes. Currently the driver
uses equal (roughly) low/high times which will result in too short
low time.

OMAP3430 TRM gives the following equations:

	F/S: tLow  = (scll + 7) * internal_clk
	     tHigh = (sclh + 5) * internal_clk
	HS:  tLow  = (scll + 7) * fclk
	     tHigh = (sclh + 5) * fclk

Furthermore, the I2C specification sets the following minimum values
for HS tLow/tHigh for capacitive bus loads 100 pF (maximum speed 3400)
and 400 pF (maximum speed 1700):

	speed	tLow		tHigh
	3400	160 ns		60 ns
	1700	320 ns		120 ns

and for F/S:

	speed	tLow		tHigh
	400	1300 ns		600 ns
	100	4700 ns		4000 ns

By using duty cycles 33/66 (HS, F) and 50/50 (S) we stay above these
minimum values.

Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-06-13 10:39:25 +01:00
..
accessibility
acpi Merge branch 'irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-06-10 15:25:41 -07:00
amba
ata Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev 2009-06-11 11:23:17 -07:00
atm
auxdisplay
base Driver Core: Rework platform suspend/resume, print warning 2009-06-12 21:32:32 +02:00
block Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze 2009-06-12 13:15:17 -07:00
bluetooth tty: fix bluetooth scribbling on low latency flags 2009-06-11 08:51:05 -07:00
cdrom block: Use accessor functions for queue limits 2009-05-22 23:22:54 +02:00
char Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2009-06-12 18:09:18 -07:00
clocksource clocksource: sh_mtu2/cmt_register() should be static. 2009-05-03 18:05:42 +09:00
connector
cpufreq cpumask: alloc zeroed cpumask for static cpumask_var_ts 2009-06-09 22:30:27 +09:30
cpuidle
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2009-05-17 15:48:05 -07:00
dca
dio
dma Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2009-05-30 07:57:44 -07:00
edac EDAC: do not enable modules by default 2009-06-10 12:19:41 +02:00
eisa
firewire
firmware [libata] ahci: Restore SB600 SATA controller 64 bit DMA 2009-06-10 11:05:00 -04:00
gpio microblaze: Kconfig: Enable drivers for Microblaze 2009-05-21 15:56:04 +02:00
gpu Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2009-06-12 18:09:18 -07:00
hid HID: add NOGET quirk for devices from CH Products 2009-05-11 17:09:21 +02:00
hwmon hwmon: (lm78) Add missing __devexit_p() 2009-06-01 13:46:49 +02:00
i2c i2c: OMAP2/3: Fix scll/sclh calculations 2009-06-13 10:39:25 +01:00
ide Merge branch 'for-2.6.31' of git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6 2009-06-12 09:29:42 -07:00
idle i7300_idle: allow testing on i5000-series hardware w/o re-compile 2009-05-28 20:52:40 -04:00
ieee1394 fs: Remove i_cindex from struct inode 2009-06-11 21:36:09 -04:00
infiniband [SCSI] libiscsi: add task aborted state 2009-05-23 15:44:13 -05:00
input Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze 2009-06-12 13:15:17 -07:00
isdn gigaset: beyond ARRAY_SIZE of iwb->data 2009-05-21 15:04:15 -07:00
leds
lguest Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-lguest 2009-06-12 09:32:26 -07:00
macintosh Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6 2009-04-24 08:16:05 -07:00
mca
md Merge branch 'for-2.6.31' of git://git.kernel.dk/linux-2.6-block 2009-06-11 11:10:35 -07:00
media ivtv: Fix PCI DMA direction 2009-06-05 08:05:23 -07:00
memstick block: Do away with the notion of hardsect_size 2009-05-22 23:22:54 +02:00
message [SCSI] Merge branch 'linus' 2009-06-12 10:02:03 -05:00
mfd mfd: pcf50633: fix unsafe disable_irq() 2009-05-19 22:22:28 +02:00
misc [SCSI] ses: fix problems caused by empty SES provided name 2009-05-15 12:20:57 -04:00
mmc Merge branch 'for-2.6.31' of git://git.kernel.dk/linux-2.6-block 2009-06-11 11:10:35 -07:00
mtd Merge branch 'for-2.6.31' of git://git.kernel.dk/linux-2.6-block 2009-06-11 11:10:35 -07:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2009-06-12 09:50:42 -07:00
nubus
of microblaze: Kconfig: Enable drivers for Microblaze 2009-05-21 15:56:04 +02:00
oprofile oprofile: fix cpu buffer size 2009-05-07 17:28:59 +02:00
parisc irq: change ->set_affinity() to return status 2009-04-28 12:21:16 +02:00
parport parport_pc: clean up the modified while loops using for 2009-06-11 08:51:03 -07:00
pci Merge branch 'irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-06-10 15:25:41 -07:00
pcmcia [ARM] 5458/1: pcmcia: pxa2xx-sharpsl: check if we do have Scoop config 2009-04-23 23:25:40 +01:00
platform eeepc-laptop: unregister_rfkill_notifier on failure 2009-05-14 11:28:27 -04:00
pnp Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2009-06-12 18:09:18 -07:00
power
ps3
rapidio
regulator regulator: da903x: add missing __devexit_p() 2009-05-18 11:21:10 +01:00
rtc Merge branches 'sh/stable-updates' and 'sh/sparseirq' 2009-05-22 13:29:37 +09:00
s390 Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6 2009-06-12 18:18:05 -07:00
sbus block: implement and enforce request peek/start/fetch 2009-05-11 09:52:18 +02:00
scsi [SCSI] Merge branch 'linus' 2009-06-12 10:02:03 -05:00
serial Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 2009-06-11 10:08:33 -07:00
sh sh: Tie sparseirq in to Kconfig. 2009-06-11 10:33:09 +03:00
sn
spi microblaze: Kconfig: Enable drivers for Microblaze 2009-05-21 15:56:04 +02:00
ssb SSB: BCM47xx: Export ssb_watchdog_timer_set 2009-06-08 16:57:50 +01:00
staging Staging: comedi: David doesn't want to get comedi patches 2009-05-08 19:39:28 -07:00
tc
telephony
thermal thermal: fix off-by-1 error in trip point trigger condition 2009-05-14 13:40:53 -04:00
uio UIO: fix specific device driver missing statement for depmod 2009-04-16 16:17:11 -07:00
usb Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze 2009-06-12 13:15:17 -07:00
uwb
video Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze 2009-06-12 13:15:17 -07:00
virtio virtio: enhance id_matching for virtio drivers 2009-06-12 22:16:40 +09:30
w1
watchdog [ARM] 5460/1: Orion: reduce namespace pollution 2009-04-23 23:25:41 +01:00
xen PM core: rename suspend and resume functions 2009-06-12 21:32:31 +02:00
zorro
Kconfig
Makefile V4L/DVB (11561a): move media after i2c 2009-04-29 15:41:13 -03:00