Scott Wood f6dc1576cd arm64: arch_timer: Work around QorIQ Erratum A-008585 ... Erratum A-008585 says that the ARM generic timer counter "has the potential to contain an erroneous value for a small number of core clock cycles every time the timer value changes". Accesses to TVAL (both read and write) are also affected due to the implicit counter read. Accesses to CVAL are not affected. The workaround is to reread TVAL and count registers until successive reads return the same value. Writes to TVAL are replaced with an equivalent write to CVAL. The workaround is to reread TVAL and count registers until successive reads return the same value, and when writing TVAL to retry until counter reads before and after the write return the same value. The workaround is enabled if the fsl,erratum-a008585 property is found in the timer node in the device tree. This can be overridden with the clocksource.arm_arch_timer.fsl-a008585 boot parameter, which allows KVM users to enable the workaround until a mechanism is implemented to automatically communicate this information. This erratum can be found on LS1043A and LS2080A. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Scott Wood <oss@buserror.net> [will: renamed read macro to reflect that it's not usually unstable] Signed-off-by: Will Deacon <will.deacon@arm.com>		2016-09-23 17:19:25 +01:00
..
acpi_pm.c	clocksource/drivers/acpi_pm: Convert to pr_* macros	2015-12-29 12:52:57 +01:00
arm_arch_timer.c	arm64: arch_timer: Work around QorIQ Erratum A-008585	2016-09-23 17:19:25 +01:00
arm_global_timer.c	clocksource/arm_global_timer: Convert to hotplug state machine	2016-07-15 10:41:44 +02:00
armv7m_systick.c	clocksource/drivers/armv7m_systick: Add the COMPILE_TEST option	2016-06-28 10:22:05 +02:00
asm9260_timer.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
bcm2835_timer.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
bcm_kona_timer.c	clocksource/drivers/kona: Fix get_counter() error handling	2016-08-17 13:08:31 +02:00
cadence_ttc_timer.c	clocksource/drivers/cadence_ttc: fix a return value in case of error	2016-07-07 09:44:38 +02:00
clksrc_st_lpc.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
clksrc-dbx500-prcmu.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
clksrc-probe.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
clps711x-timer.c	ARM: SoC driver updates for v4.8	2016-08-01 18:36:01 -04:00
cs5535-clockevt.c	clockevents/drivers/cs5535: Migrate to new 'set-state' interface	2015-08-06 12:16:42 +02:00
dummy_timer.c	clocksource/dummy_timer: Convert to hotplug state machine	2016-07-15 10:40:24 +02:00
dw_apb_timer_of.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
dw_apb_timer.c	clockevents/drivers/dw_apb_timer: Implement ->set_state_oneshot_stopped()	2016-04-28 15:09:03 +02:00
em_sti.c	clocksource/drivers/em_sti: Remove unneeded memset()s	2015-10-15 17:41:59 +02:00
exynos_mct.c	clocksource/exynos_mct: Convert to hotplug state machine	2016-07-15 10:41:44 +02:00
fsl_ftm_timer.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
h8300_timer8.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
h8300_timer16.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
h8300_tpu.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
i8253.c	clockevents/drivers/i8253: Migrate to new 'set-state' interface	2015-08-10 11:40:30 +02:00
Kconfig	arm64: arch_timer: Work around QorIQ Erratum A-008585	2016-09-23 17:19:25 +01:00
Makefile	clocksource/drivers/integrator-ap: Add the COMPILE_TEST option	2016-06-28 10:22:16 +02:00
meson6_timer.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
metag_generic.c	clocksource/metag: Convert to hotplug state machine	2016-07-15 10:40:25 +02:00
mips-gic-timer.c	clocksource/drivers/mips-gic-timer: Make gic_clocksource_of_init() return int	2016-08-17 13:08:32 +02:00
mmio.c	clocksource: Mmio: remove artificial 32bit limitation	2015-12-10 19:37:18 +01:00
moxart_timer.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
mps2-timer.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
mtk_timer.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
mxs_timer.c	clocksource/drivers/mxs: Remove useless header <asm/mach/time.h>	2016-06-28 10:22:09 +02:00
nomadik-mtu.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
numachip.c	x86/numachip: Fix timer build conflict	2015-09-23 05:39:20 +02:00
pxa_timer.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
qcom-timer.c	clocksource/qcom-timer: Convert to hotplug state machine	2016-07-15 10:40:25 +02:00
rockchip_timer.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
samsung_pwm_timer.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
scx200_hrt.c	clocksource: scx200_hrt: Fix the build	2012-02-22 13:25:16 +01:00
sh_cmt.c	clocksource/drivers/sh_cmt: Remove unneeded memset() in sh_cmt_setup()	2015-10-15 17:42:00 +02:00
sh_mtu2.c	clocksource/drivers/sh_mtu2: Fix multiple shutdown call issue	2015-10-28 15:22:56 +01:00
sh_tmu.c	clocksource/drivers/sh_tmu: Fix traceback spotted in -next	2015-08-10 11:40:57 +02:00
sun4i_timer.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
tango_xtal.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
tcb_clksrc.c	clockevents/tcb_clksrc: Prevent disabling an already disabled clock	2016-01-15 11:40:44 +01:00
tegra20_timer.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
time-armada-370-xp.c	clocksource/drivers/time-armada-370-xp: Fix the clock reference	2016-08-17 13:08:31 +02:00
time-efm32.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
time-lpc32xx.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
time-orion.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
time-pistachio.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
timer-atlas7.c	clocksource/atlas7: Convert to hotplug state machine	2016-07-15 10:41:45 +02:00
timer-atmel-pit.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
timer-atmel-st.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
timer-digicolor.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
timer-imx-gpt.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
timer-integrator-ap.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
timer-keystone.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
timer-nps.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
timer-oxnas-rps.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
timer-prima2.c	clocksource/drivers/prima2: Remove useless header <asm/mach/time.h>	2016-06-28 10:22:11 +02:00
timer-sp804.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
timer-sp.h	ARM: 8366/1: move Dual-Timer SP804 driver to drivers/clocksource	2015-06-02 09:58:18 +01:00
timer-stm32.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
timer-sun5i.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
timer-ti-32k.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
timer-u300.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
versatile.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
vf_pit_timer.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
vt8500_timer.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00
zevio-timer.c	clocksources: Switch back to the clksrc table	2016-06-28 10:19:35 +02:00