Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Jisheng Zhang 9115df89d1 clocksource/drivers/dw_apb_timer_of: Implement ARM delay timer ... Implement an ARM delay timer to be used for udelay(). This allows us to skip the delay loop calibration at boot on Marvell BG2, BG2Q, BG2CD platforms. And after this patch, udelay() will be unaffected by CPU frequency changes. Note: Although in case there are several possible delay timers, we may not select the "best" delay timer. Take one Marvell Berlin platform for example: we have arch timer and dw-apb timer. The arch timer freq is 25MHZ while the dw-apb timer freq is 100MHZ, current selection would choose the dw-apb timer. But the dw apb timer is on the APB bus while arch timer sits in CPU, the cost of accessing the apb timer is higher than the arch timer. We could introduce "rating" concept to delay timer, but this approach "brings a lot of complexity and workarounds in the code for a small benefit" as pointed out by Daniel. Later, Arnd pointed out "However, we could argue that this actually doesn't matter at all, because the entire point of the ndelay()/ udelay()/mdelay() functions is to waste CPU cycles doing not much at all, so we can just as well waste them reading the timer register than spinning on the CPU reading the arch timer more often.", so we just simply register the dw apb base delay timer. Signed-off-by: Jisheng Zhang <jszhang@marvell.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>		2015-12-15 09:42:00 +01:00
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acpi_pm.c
arm_arch_timer.c	clocksource / arm_arch_timer: Convert to ACPI probing	2015-10-01 02:18:39 +02:00
arm_global_timer.c	clocksource/drivers/arm_global_timer: Prevent ftrace recursion	2015-10-27 01:32:33 +01:00
armv7m_systick.c
asm9260_timer.c
bcm2835_timer.c
bcm_kona_timer.c
cadence_ttc_timer.c	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-09-01 14:04:50 -07:00
clksrc-dbx500-prcmu.c
clksrc-probe.c	clocksource: cosmetic: Drop OF 'dependency' from symbols	2015-10-01 02:18:39 +02:00
clksrc_st_lpc.c
clps711x-timer.c
cs5535-clockevt.c
dummy_timer.c
dw_apb_timer.c	clockevents/drivers/dw_apb_timer: Add dynamic irq flag to the timer	2015-08-10 11:40:53 +02:00
dw_apb_timer_of.c	clocksource/drivers/dw_apb_timer_of: Implement ARM delay timer	2015-12-15 09:42:00 +01:00
em_sti.c	clocksource/drivers/em_sti: Remove unneeded memset()s	2015-10-15 17:41:59 +02:00
exynos_mct.c	clocksource/drivers/exynos_mct: Use container_of() instead of this_cpu_ptr()	2015-10-15 17:42:03 +02:00
fsl_ftm_timer.c	clocksource/fsl: Avoid harmless 64-bit warnings	2015-11-16 19:07:08 +01:00
h8300_timer8.c	clocksource/drivers/h8300_*: Remove unneeded memset()s	2015-10-15 17:42:02 +02:00
h8300_timer16.c	clocksource/drivers/h8300_*: Remove unneeded memset()s	2015-10-15 17:42:02 +02:00
h8300_tpu.c	clocksource/drivers/h8300_*: Remove unneeded memset()s	2015-10-15 17:42:02 +02:00
i8253.c
Kconfig	clocksource/drivers/Kconfig: Add missing GENERIC_CLOCKEVENTS dependency	2015-12-15 09:41:58 +01:00
Makefile	ARM: SoC cleanups for v4.4	2015-11-10 14:48:36 -08:00
meson6_timer.c
metag_generic.c
mips-gic-timer.c	MIPS: VDSO: Add implementations of gettimeofday() and clock_gettime()	2015-11-11 08:36:41 +01:00
mmio.c
moxart_timer.c
mtk_timer.c	clocksource/drivers/mtk_timer: Fix memleak in mtk_timer_init()	2015-12-15 09:41:04 +01:00
mxs_timer.c
nomadik-mtu.c
numachip.c	x86/numachip: Fix timer build conflict	2015-09-23 05:39:20 +02:00
pxa_timer.c
qcom-timer.c
rockchip_timer.c	clocksource/drivers/rockchip: Remove dsb() usage	2015-12-15 09:41:11 +01:00
samsung_pwm_timer.c	clocksource/drivers/samsung_pwm_timer: Prevent ftrace recursion	2015-10-27 01:33:41 +01:00
scx200_hrt.c
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
tango_xtal.c	clocksource/drivers/tango_xtal: Add new timer for Tango SoCs	2015-10-16 14:09:57 +02:00
tcb_clksrc.c	misc: atmel_tclib: get and use slow clock	2015-10-06 12:33:14 +02:00
tegra20_timer.c	clocksource/drivers/tegra: Allow timer irq affinity change	2015-12-15 09:41:06 +01:00
time-armada-370-xp.c	clocksource/drivers/armada-370-xp: Implement ARM delay timer	2015-10-19 22:42:14 +02:00
time-efm32.c
time-lpc32xx.c
time-orion.c
time-pistachio.c	clocksource/drivers/pistachio: Prevent ftrace recursion	2015-10-27 01:33:18 +01:00
timer-atlas7.c
timer-atmel-pit.c	clockevents/drivers/timer-atmel-pit: Fix typo in structure initialization	2015-08-10 11:40:56 +02:00
timer-atmel-st.c	clocksource: atmel-st: get and use slow clock	2015-10-06 12:25:11 +02:00
timer-digicolor.c	clocksource/drivers/digicolor: Prevent ftrace recursion	2015-10-27 01:34:17 +01:00
timer-imx-gpt.c	clocksource/drivers/imx: Allow timer irq affinity change	2015-10-15 17:42:05 +02:00
timer-integrator-ap.c	clockevents/drivers/integrator: Migrate to new 'set-state' interface	2015-08-10 11:40:46 +02:00
timer-keystone.c	clocksource/drivers/keystone: Fix bad NO_IRQ usage	2015-09-29 14:33:51 +02:00
timer-prima2.c	clocksource/drivers/prima2: Prevent ftrace recursion	2015-10-27 01:33:50 +01:00
timer-sp.h
timer-sp804.c	clockevents/drivers/timer-sp804: Migrate to new 'set-state' interface	2015-08-10 11:40:55 +02:00
timer-stm32.c	clockevents/drivers/stm32: Migrate to new 'set-state' interface	2015-08-10 11:40:48 +02:00
timer-sun5i.c	clockevents/drivers/sun5i: Migrate to new 'set-state' interface	2015-08-10 11:40:49 +02:00
timer-ti-32k.c	clocksource: add TI 32.768 Hz counter driver	2015-10-16 11:06:24 -05:00
timer-u300.c	clockevents/drivers/u300: Migrate to new 'set-state' interface	2015-08-10 11:40:49 +02:00
versatile.c
vf_pit_timer.c	clocksource/drivers/vf_pit_timer: Prevent ftrace recursion	2015-10-27 01:33:58 +01:00
vt8500_timer.c	clocksource/drivers/vt8500: Remove unneeded header	2015-12-15 09:41:40 +01:00
zevio-timer.c	clockevents/drivers/zevio: Migrate to new 'set-state' interface	2015-08-10 11:40:51 +02:00