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

ARM: 7171/1: unwind: add unwind directives to bitops assembly macros

2011-11-26 21:58:53 +00:00

clear_user.S

ARM: 8322/1: keep .text and .fixup regions closer together

2015-03-29 23:11:56 +01:00

clearbit.S

ARM: 7171/1: unwind: add unwind directives to bitops assembly macros

2011-11-26 21:58:53 +00:00

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

ARM: 5701/1: ARM: copy_page.S: take into account the size of the cache line

2009-09-15 22:07:02 +01:00

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

ARM: remove unnecessary mach/hardware.h includes

2011-07-12 11:19:27 -05:00

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

arch: remove direct definitions of KERN_<LEVEL> uses

2012-07-30 17:25:13 -07:00

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

ARM: 7171/1: unwind: add unwind directives to bitops assembly macros

2011-11-26 21:58:53 +00:00

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

ARM: 7171/1: unwind: add unwind directives to bitops assembly macros

2011-11-26 21:58:53 +00:00

testclearbit.S

ARM: 7171/1: unwind: add unwind directives to bitops assembly macros

2011-11-26 21:58:53 +00:00

testsetbit.S

ARM: 7171/1: unwind: add unwind directives to bitops assembly macros

2011-11-26 21:58:53 +00:00

uaccess_with_memcpy.c

ARM: 7858/1: mm: make UACCESS_WITH_MEMCPY huge page aware

2013-10-29 11:06:15 +00:00

ucmpdi2.S

ARM: convert all "mov.* pc, reg" to "bx reg" for ARMv6+

2014-07-18 12:29:04 +01:00

xor-neon.c

ARM: 7835/2: fix modular build of xor_blocks() with NEON enabled

2013-09-09 15:24:47 +01:00