Soren Brinkmann b3e90722f6 clocksource/cadence_ttc: Overhaul clocksource frequency adjustment ...

The currently used method adjusting the clocksource to a changing input
frequency does not work on kernels from 3.11 on.
The new approach is to keep the timer frequency as constant as possible.
I.e.
 - due to the TTC's prescaler limitations, allow frequency changes
   only if the frequency scales by a power of 2
 - adjust the counter's divider on the fly when a frequency change
   occurs

This limits cpufreq to scale by certain factors only.
But we may keep the time base somewhat constant, so that sleep() & co
keep working as expected, while supporting cpufreq.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Michal Simek <michal.simek@xilinx.com>

2014-03-11 23:10:03 +01:00

..

acpi_pm.c

treewide: Fix printks with 0x%#

2013-08-27 10:49:38 +02:00

arm_arch_timer.c

clocksource: arch_timer: Set dynamic irq affinity on mmio clockevent

2014-03-11 23:04:39 +01:00

arm_global_timer.c

clocksource: arm_global_timer: Switch to sched_clock_register()

2013-12-11 11:40:23 +01:00

bcm2835_timer.c

clocksource: bcm2835: Switch to sched_clock_register()

2013-07-30 11:24:51 -07:00

bcm_kona_timer.c

clocksource: kona: Add basic use of external clock

2014-01-31 21:04:01 -08:00

cadence_ttc_timer.c

clocksource/cadence_ttc: Overhaul clocksource frequency adjustment

2014-03-11 23:10:03 +01:00

clksrc-dbx500-prcmu.c

clocksource: dbx500-prcmu: Switch to sched_clock_register()

2013-07-30 11:24:52 -07:00

clksrc-of.c

Merge branch 'clockevents/3.14' of git://git.linaro.org/people/daniel.lezcano/linux into timers/core

2014-01-14 14:33:29 +01:00

cs5535-clockevt.c

clocksource: misc drivers: Remove deprecated IRQF_DISABLED

2013-12-11 11:40:27 +01:00

cyclone.c

…

dummy_timer.c

clocksource+irqchip: delete __cpuinit usage from all related files

2013-07-14 19:36:57 -04:00

dw_apb_timer_of.c

clocksource: dw_apb_timer_of: Fix support for dts binding "snps,dw-apb-timer"

2013-12-10 19:49:18 +01:00

dw_apb_timer.c

clocksource: misc drivers: Remove deprecated IRQF_DISABLED

2013-12-11 11:40:27 +01:00

em_sti.c

clocksource: em_sti: convert to clk_prepare/unprepare

2013-10-22 22:36:24 +02:00

exynos_mct.c

clocksource: mct: extend mct to support 8 local interrupts for Exynos5420

2013-12-16 04:47:34 +09:00

i8253.c

…

Kconfig

clocksource: Add Kconfig entries for CMT, MTU2, TMU and STI

2014-03-11 23:05:15 +01:00

Makefile

clocksource: timer-keystone: introduce clocksource driver for Keystone

2014-03-11 23:04:56 +01:00

metag_generic.c

clocksource+irqchip: delete __cpuinit usage from all related files

2013-07-14 19:36:57 -04:00

mmio.c

…

moxart_timer.c

ARM: clocksource: moxart: Add bitops.h include

2013-08-01 01:13:34 +02:00

mxs_timer.c

clocksource: mxs_timer: Switch to sched_clock_register()

2013-07-30 11:24:52 -07:00

nomadik-mtu.c

Merge tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2014-01-23 18:45:38 -08:00

samsung_pwm_timer.c

clocksource: misc drivers: Remove deprecated IRQF_DISABLED

2013-12-11 11:40:27 +01:00

scx200_hrt.c

…

sh_cmt.c

Merge branch 'clockevents/for-Simon-3.13-rc2' into clockevents/3.14

2013-12-18 15:14:36 +01:00

sh_mtu2.c

Merge branch 'clockevents/3.14' of git://git.linaro.org/people/daniel.lezcano/linux into timers/core

2014-01-14 14:33:29 +01:00

sh_tmu.c

Merge branch 'clockevents/3.14' of git://git.linaro.org/people/daniel.lezcano/linux into timers/core

2014-01-14 14:33:29 +01:00

sun4i_timer.c

clocksource: sunxi: Add new compatibles

2014-03-11 23:04:46 +01:00

tcb_clksrc.c

clocksource: tcb_clksrc: Remove IRQF_DISABLED

2013-10-03 16:28:40 +02:00

tegra20_timer.c

clocksource: tegra: Remove deprecated IRQF_DISABLED

2013-12-11 11:40:28 +01:00

time-armada-370-xp.c

clocksource: armada-370-xp: Use atomic access for shared registers

2014-03-11 23:05:05 +01:00

time-efm32.c

clocksource: Provide timekeeping for efm32 SoCs

2013-10-22 22:36:33 +02:00

time-orion.c

clocksource: orion: Use atomic access for shared registers

2014-03-11 23:05:02 +01:00

timer-keystone.c

clocksource: timer-keystone: Delete unnecessary variable

2014-03-11 23:05:00 +01:00

timer-marco.c

Merge tag 'remove-local-timers' of git://git.kernel.org/pub/scm/linux/kernel/git/davidb/linux-msm into next/cleanup

2013-07-23 16:54:15 -07:00

timer-prima2.c

clocksource: sirf: Switch to sched_clock_register() and use 64 bits

2013-07-30 11:24:55 -07:00

timer-sun5i.c

clocksource: Timer-sun5i: Switch to sched_clock_register()

2014-01-19 13:23:23 +01:00

timer-u300.c

ARM: u300: move timer driver to clocksource

2014-03-11 23:04:43 +01:00

vf_pit_timer.c

clocksource: vf_pit_timer: Switch to sched_clock_register()

2013-07-30 11:24:56 -07:00

vt8500_timer.c

clocksource: vt8500: Remove deprecated IRQF_DISABLED

2013-12-11 11:40:28 +01:00

zevio-timer.c

clocksource: Add TI-Nspire timer support

2013-06-06 17:23:13 +02:00