Afzal Mohammed 246da26d37 ARM: OMAP2+: gpmc: generic timing calculation ... Presently there are three peripherals that gets it timing by runtime calculation. Those peripherals can work with frequency scaling that affects gpmc clock. But timing calculation for them are in different ways. Here a generic runtime calculation method is proposed. Input to this function were selected so that they represent timing variables that are present in peripheral datasheets. Motive behind this was to achieve DT bindings for the inputs as is. Even though a few of the tusb6010 timings could not be made directly related to timings normally found on peripherals, expressions used were translated to those that could be justified. There are possibilities of improving the calculations, like calculating timing for read & write operations in a more similar way. Expressions derived here were tested for async onenand on omap3evm (as vanilla Kernel does not have omap3evm onenand support, local patch was used). Other peripherals, tusb6010, smc91x calculations were validated by simulating on omap3evm. Regarding "we_on" for onenand async, it was found that even for muxed address/data, it need not be greater than "adv_wr_off", but rather could be derived from write setup time for peripheral from start of access time, hence would more be in line with peripheral timings. With this method it was working fine. If it is required in some cases to have "we_on" same as "wr_data_mux_bus" (i.e. greater than "adv_wr_off"), another variable could be added to indicate it. But such a requirement is not expected though. It has been observed that "adv_rd_off" & "adv_wr_off" are currently calculated by adding an offset over "oe_on" and "we_on" respectively in the case of smc91x. But peripheral datasheet does not specify so and so "adv_rd(wr)_off" has been derived (to be specific, made ignorant of "oe_on" and "we_on") observing datasheet rather than adding an offset. Hence this generic routine is expected to work for smc91x (91C96 RX51 board). This was verified on smsc911x (9220 on OMAP3EVM) - a similar ethernet controller. Timings are calculated in ps to prevent rounding errors and converted to ns at final stage so that these values can be directly fed to gpmc_cs_set_timings(). gpmc_cs_set_timings() would be modified to take ps once all custom timing routines are replaced by the generic routine, at the same time generic timing routine would be modified to provide timings in ps. struct gpmc_timings field types are upgraded from u16 => u32 so that it can hold ps values. Whole of this exercise is being done to achieve driver and DT conversion. If timings could not be calculated in a peripheral agnostic way, either gpmc driver would have to be peripheral gnostic or a wrapper arrangement over gpmc driver would be required. Signed-off-by: Afzal Mohammed <afzal@ti.com>		2012-11-09 18:07:11 +05:30
..
ABI	SCSI misc on 20121012	2012-10-13 10:57:01 +09:00
accounting	doc: getdelays.c: remember to close() socket on error in create_nl_socket()	2012-09-01 09:58:59 -07:00
acpi	Update documentation for parameter *notrigger* in einj.txt	2012-03-30 03:30:19 -04:00
aoe	aoe: update documentation to better reflect aoe-plus-udev usage	2012-10-06 03:05:30 +09:00
arm	Merge branch 'fixes' into for-linus	2012-10-11 10:55:04 +01:00
arm64	arm64: MMU definitions	2012-09-17 13:41:56 +01:00
auxdisplay
backlight	backlight: new backlight driver for LP855x devices	2012-03-23 16:58:33 -07:00
blackfin	Documentation: Fix typo in multiple files in Documentation	2012-04-16 14:37:13 +02:00
block	block: Kill bi_destructor	2012-09-09 10:35:39 +02:00
blockdev	Documentation: remove references to /etc/modprobe.conf	2012-03-30 16:03:15 -07:00
bus-devices	ARM: OMAP2+: gpmc: generic timing calculation	2012-11-09 18:07:11 +05:30
cdrom
cgroups	memcg: trivial fixes for Documentation/cgroups/memory.txt	2012-10-09 16:22:54 +09:00
connector	connector: Move cn_test.c away from NLMSG_PUT().	2012-06-26 21:19:02 -07:00
console
cpu-freq	acpi-cpufreq: Add support for disabling dynamic overclocking	2012-09-09 22:05:12 +02:00
cpuidle	Honor state disabling in the cpuidle ladder governor	2012-09-04 01:35:44 +02:00
cris	CRIS: Update documentation	2012-04-03 13:09:18 +02:00
crypto	KEYS: Document asymmetric key type	2012-10-08 13:50:12 +10:30
development-process
device-mapper	DM RAID: Add rebuild capability for RAID10	2012-10-11 13:40:24 +11:00
devicetree	Merge branch 'i2c-embedded/for-next' of git://git.pengutronix.de/git/wsa/linux	2012-10-11 10:27:51 +09:00
DocBook	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media	2012-10-18 16:10:42 -07:00
driver-model	pwm: add devm_pwm_get() and devm_pwm_put()	2012-09-10 17:05:45 +02:00
dvb	get_dvb_firmware: fix download site for tda10046 firmware	2012-09-28 16:16:00 -03:00
early-userspace
EDID	drm: allow loading an EDID as firmware to override broken monitor	2012-03-20 10:09:28 +00:00
extcon	Documentation/extcon: porting guide for Android kernel switch driver.	2012-04-20 09:24:27 -07:00
fault-injection	fault-injection: add tool to run command with failslab or fail_page_alloc	2012-07-30 17:25:22 -07:00
fb	Documentation: remove references to /etc/modprobe.conf	2012-03-30 16:03:15 -07:00
filesystems	Merge branch 'for-3.7' of git://linux-nfs.org/~bfields/linux	2012-10-13 10:53:54 +09:00
firmware_class
frv
hid	HID: sensors: add documentation	2012-09-06 19:11:04 +01:00
hwmon	hwmon: (coretemp) Add support for Atom CE4110/4150/4170	2012-10-14 15:21:33 -07:00
i2c	i2c-mux-gpio: Update documentation	2012-10-05 22:23:54 +02:00
i2o
ia64	doc: aliasing-test: close fd on write error	2012-09-01 09:57:10 -07:00
ide	Documentation: remove references to /etc/modprobe.conf	2012-03-30 16:03:15 -07:00
infiniband	IB/ipoib: Add rtnl_link_ops support	2012-09-20 16:49:17 -04:00
input	Input: add driver for FT5x06 based EDT displays	2012-07-24 23:55:03 -07:00
ioctl	ioctl-number.txt: Remove legacy private ioctl's from media drivers	2012-08-14 00:07:39 -03:00
isdn	Documentation: remove references to /etc/modprobe.conf	2012-03-30 16:03:15 -07:00
ja_JP
kbuild	UAPI: Remove the objhdr-y export list	2012-10-02 18:01:56 +01:00
kdump	kexec: update URL of kexec homepage	2012-07-18 18:35:57 -07:00
ko_KR
laptops	Documentation: fix the VM knobs descritpion WRT pdflush	2012-08-04 12:15:09 +04:00
leds	leds-lp5523: add channel name in the platform data	2012-09-11 18:32:41 +08:00
m68k
make
memory-devices	memory: emif: add basic infrastructure for EMIF driver	2012-05-02 00:10:49 -07:00
mips
misc-devices	lis3lv02d: Add STMicroelectronics lis331dlh digital accelerometer	2012-09-05 13:44:04 -07:00
mmc
mn10300
mtd
namespaces
netlabel
networking	vxlan: virtual extensible lan	2012-10-01 18:39:45 -04:00
nfc	NFC: Error management documentation	2012-07-09 16:42:11 -04:00
parisc	Documentation: Fix typo in multiple files in Documentation	2012-04-16 14:37:13 +02:00
PCI
pcmcia
power	1. New drivers:	2012-10-07 17:29:24 +09:00
powerpc	Revert "powerpc/hw-breakpoint: Use generic hw-breakpoint interfaces for new PPC ptrace flags"	2012-05-22 14:37:24 +10:00
pps
prctl	security: Minor improvements to no_new_privs documentation	2012-07-08 00:25:48 +10:00
pti
ptp
rapidio
RCU	Merge branches 'bigrt.2012.09.23a', 'doctorture.2012.09.23a', 'fixes.2012.09.23a', 'hotplug.2012.09.23a' and 'idlechop.2012.09.23a' into HEAD	2012-09-24 20:02:22 -07:00
s390	Documentation: remove references to /etc/modprobe.conf	2012-03-30 16:03:15 -07:00
scheduler	sched: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW	2012-09-13 16:52:04 +02:00
scsi	[SCSI] megaraid_sas: Version, Changelog, Copyright update	2012-10-09 11:21:48 +01:00
security	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
serial	firmware: remove computone driver firmware and documentation	2012-08-16 12:31:18 -07:00
sh
sound	Merge branch 'topic/tlv-chmap' into for-next	2012-09-15 16:32:31 +02:00
spi	spi: Updates for v3.7	2012-10-02 17:26:42 -07:00
sysctl	coredump: add support for %d=__get_dumpable() in core name	2012-10-06 03:05:15 +09:00
target	target: Simplify fabric sense data length handling	2012-09-17 17:12:58 -07:00
telephony
thermal	hwmon: exynos4: move thermal sensor driver to driver/thermal directory	2012-09-24 14:44:38 +08:00
timers
trace	doc: fix old config name of kprobetrace	2012-09-27 12:11:29 +02:00
usb	usb: add decriptor of persist fail for some morph usb devices	2012-08-10 12:06:39 -07:00
vDSO
video4linux	[media] media: v4l2-ctrl: add a helper function to add standard control with driver specific menu	2012-10-05 21:48:03 -03:00
virtual	Merge branch 'for-linus-37rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml	2012-10-10 11:15:20 +09:00
vm	mm: remove vma arg from page_evictable	2012-10-09 16:22:55 +09:00
w1	1-Wire: Add support for the maxim ds1825 temperature sensor	2012-08-16 12:33:59 -07:00
watchdog	watchdog: fix watchdog-test.c build warning	2012-08-29 17:12:58 +02:00
wimax
x86	x86/mce: Provide boot argument to honour bios-set CMCI threshold	2012-09-27 10:08:00 -07:00
zh_CN	Documentation: Fixes some translation error in Documentation/zh_CN/gpio.txt	2012-09-26 13:12:32 -07:00
.gitignore
00-INDEX	prio_tree: remove	2012-10-09 16:22:40 +09:00
applying-patches.txt
atomic_ops.txt
bad_memory.txt
basic_profiling.txt
binfmt_misc.txt
braille-console.txt
bt8xxgpio.txt
btmrvl.txt
BUG-HUNTING
bus-virt-phys-mapping.txt
cachetlb.txt
Changes
circular-buffers.txt
clk.txt	Documentation: common clk API	2012-03-16 20:35:01 +00:00
coccinelle.txt
CodingStyle	CodingStyle: add networking specific block comment style	2012-10-06 03:04:59 +09:00
cpu-hotplug.txt	documentation: remove references to cpu_*_map.	2012-03-29 15:38:31 +10:30
cpu-load.txt
cputopology.txt
crc32.txt	crc32: move long comment about crc32 fundamentals to Documentation/	2012-03-23 16:58:37 -07:00
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt
dell_rbu.txt
devices.txt	Doc: document max raw dev number	2012-06-03 12:05:50 +02:00
digsig.txt
DMA-API-HOWTO.txt
DMA-API.txt
DMA-attributes.txt	common: DMA-mapping: add DMA_ATTR_SKIP_CPU_SYNC attribute	2012-07-30 12:25:47 +02:00
dma-buf-sharing.txt	dma-buf: add initial vmap documentation	2012-05-25 12:51:11 +05:30
DMA-ISA-LPC.txt
dmaengine.txt
dontdiff	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2012-10-01 09:06:36 -07:00
dynamic-debug-howto.txt	dynamic_debug: update Documentation/*, Kconfig.debug	2012-04-30 16:26:30 -04:00
edac.txt	Merge branch 'devel'	2012-07-29 21:11:05 -03:00
eisa.txt	MCA: delete all remaining traces of microchannel bus support.	2012-05-17 19:06:13 -04:00
email-clients.txt
flexible-arrays.txt
futex-requeue-pi.txt
gcov.txt
gpio.txt	gpio: add flags to export GPIOs when requesting	2012-04-05 21:24:06 -07:00
highuid.txt
HOWTO	docs: update HOWTO for 2.6.x -> 3.x versioning	2012-04-19 19:13:08 -07:00
hw_random.txt
hwspinlock.txt
init.txt
initrd.txt	Documentation/initrd.txt: Change the location of util-linux	2012-05-25 16:18:34 +02:00
intel_txt.txt
Intel-IOMMU.txt
io_ordering.txt
io-mapping.txt
iostats.txt
IPMI.txt	IPMI: Remove SMBus driver info from the docs	2012-10-16 18:07:12 -07:00
IRQ-affinity.txt
IRQ-domain.txt	irq_domain: Standardise legacy/linear domain selection	2012-07-11 14:59:17 +01:00
IRQ.txt
irqflags-tracing.txt
isapnp.txt
java.txt
kernel-doc-nano-HOWTO.txt
kernel-docs.txt
kernel-parameters.txt	Merge branch 'modules-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux	2012-10-14 13:39:34 -07:00
kmemcheck.txt
kmemleak.txt
kobject.txt	Documentation: Fix "struct kobj_type" to include newer members.	2012-09-04 16:06:34 -07:00
kprobes.txt
kref.txt
ldm.txt
local_ops.txt
lockdep-design.txt
lockstat.txt
lockup-watchdogs.txt
logo.gif
logo.txt
magic-number.txt
Makefile	mei: move doc files Documentation/misc-devices/mei	2012-05-09 13:59:09 -07:00
ManagementStyle	Documentation: ManagementStyle: fixed typo	2012-06-28 12:03:15 +02:00
md.txt
media-framework.txt	[media] media: Add link_validate() op to check links to the sink pad	2012-05-14 08:44:11 -03:00
memory-barriers.txt
memory-hotplug.txt	Documentation: Fix typo in multiple files in Documentation	2012-04-16 14:37:13 +02:00
mono.txt	Documentation: remove references to /etc/modprobe.conf	2012-03-30 16:03:15 -07:00
mutex-design.txt
nommu-mmap.txt
numastat.txt
oops-tracing.txt
padata.txt
parport-lowlevel.txt
parport.txt	Documentation: remove references to /etc/modprobe.conf	2012-03-30 16:03:15 -07:00
percpu-rw-semaphore.txt	percpu-rw-semaphore: fix documentation typos	2012-09-26 19:56:15 +02:00
pi-futex.txt
pinctrl.txt	pinctrl: document semantics vs GPIO	2012-09-17 10:53:57 +02:00
pnp.txt
preempt-locking.txt
printk-formats.txt	lib/vsprintf: update documentation to cover all of %p[Mm][FR]	2012-10-06 03:04:50 +09:00
pwm.txt	pwm: add devm_pwm_get() and devm_pwm_put()	2012-09-10 17:05:45 +02:00
ramoops.txt	pstore/ftrace: Convert to its own enable/disable debugfs knob	2012-09-06 22:16:58 -07:00
rbtree.txt	rbtree: move augmented rbtree functionality to rbtree_augmented.h	2012-10-09 16:22:40 +09:00
remoteproc.txt	remoteproc: add rproc_report_crash function to notify rproc crashes	2012-09-18 12:53:22 +03:00
rfkill.txt
robust-futex-ABI.txt
robust-futexes.txt
rpmsg.txt
rt-mutex-design.txt
rt-mutex.txt
rtc.txt	rtc-proc: permit the /proc/driver/rtc device to use other devices	2012-10-06 03:05:01 +09:00
SAK.txt
SecurityBugs
serial-console.txt
sgi-ioc4.txt
sgi-visws.txt
SM501.txt
smsc_ece1099.txt	mfd: smsc: Add support for smsc gpio io/keypad driver	2012-10-01 15:27:48 +02:00
sparse.txt
spinlocks.txt
stable_api_nonsense.txt
stable_kernel_rules.txt	stable: Allow merging of backports for serious user-visible performance issues	2012-06-25 12:11:58 -07:00
static-keys.txt	Documentation: Fix typo in multiple files in Documentation	2012-04-16 14:37:13 +02:00
SubmitChecklist
SubmittingDrivers
SubmittingPatches	Documentation/SubmittingPatches: suggested the use of scripts/get_maintainer.pl	2012-05-25 16:18:30 +02:00
svga.txt
sysfs-rules.txt
sysrq.txt	sparc64: Add global PMU register dumping via sysrq.	2012-10-16 09:34:01 -07:00
unaligned-memory-access.txt
unicode.txt
unshare.txt
vfio.txt	vfio: Trivial Documentation correction	2012-09-21 10:48:03 -06:00
VGA-softcursor.txt
vgaarbiter.txt
video-output.txt
vme_api.txt	VME: Move API documentation to Documentation folder	2012-05-08 16:01:34 -07:00
volatile-considered-harmful.txt
workqueue.txt	workqueue: reimplement WQ_HIGHPRI using a separate worker_pool	2012-07-13 22:24:45 -07:00
xz.txt
zorro.txt