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linux/arch/arm/lib
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Russell King 57ca654bef ARM: ensure delay timer has sufficient accuracy for delays 
We have recently had an example of someone wanting to use a 90kHz timer
for the software delay loop.

udelay() needs to have at least microsecond resolution to allow drivers
access to a delay mechanism with a reasonable chance of delaying the
period they requested within at least a 50% marging of error, especially
for small delays.

Discussion about the udelay() accuracy can be found at:
	https://lkml.org/lkml/2011/1/9/37

Reject timers which are unable to supply this level of resolution.

Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-04-14 22:28:07 +01:00
..
ashldi3.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
ashrdi3.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
backtrace.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
bitops.h ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
bswapsdi2.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
call_with_stack.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
changebit.S
clear_user.S ARM: 8322/1: keep .text and .fixup regions closer together 2015-03-29 23:11:56 +01:00
clearbit.S
copy_from_user.S ARM: 8225/1: Add unwinding support for memory copy functions 2014-11-27 16:00:25 +00:00
copy_page.S
copy_template.S ARM: 8225/1: Add unwinding support for memory copy functions 2014-11-27 16:00:25 +00:00
copy_to_user.S ARM: 8322/1: keep .text and .fixup regions closer together 2015-03-29 23:11:56 +01:00
csumipv6.S
csumpartial.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
csumpartialcopy.S
csumpartialcopygeneric.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
csumpartialcopyuser.S ARM: 8322/1: keep .text and .fixup regions closer together 2015-03-29 23:11:56 +01:00
delay-loop.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
delay.c ARM: ensure delay timer has sufficient accuracy for delays 2015-04-14 22:28:07 +01:00
div64.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
ecard.S
findbit.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
floppydma.S
getuser.S ARM: 8137/1: fix get_user BE behavior for target variable with size of 8 bytes 2014-09-12 17:38:59 +01:00
io-acorn.S
io-readsb.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
io-readsl.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
io-readsw-armv3.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
io-readsw-armv4.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
io-writesb.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
io-writesl.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
io-writesw-armv3.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
io-writesw-armv4.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
lib1funcs.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
lshrdi3.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
Makefile ARM: 8285/1: remove ARMv3 user access code again 2015-01-16 14:49:08 +00:00
memchr.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
memcpy.S ARM: 8225/1: Add unwinding support for memory copy functions 2014-11-27 16:00:25 +00:00
memmove.S ARM: 8224/1: Add unwinding support for memmove function 2014-11-27 16:00:24 +00:00
memset.S ARM: 8204/1: Add unwinding support for memset function 2014-11-21 15:24:49 +00:00
memzero.S ARM: 8223/1: Add unwinding support for __memzero function 2014-11-27 16:00:23 +00:00
muldi3.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
putuser.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
setbit.S
strchr.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
strrchr.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
testchangebit.S
testclearbit.S
testsetbit.S
uaccess_with_memcpy.c
ucmpdi2.S ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+ 2014-07-18 12:29:04 +01:00
xor-neon.c