mirror of
https://github.com/torvalds/linux.git
synced 2024-11-11 14:42:24 +00:00
8a284c062e
Pull timer updates from Thomas Gleixner:
"The timer department delivers this time:
- Support for cross clock domain timestamps in the core code plus a
first user. That allows more precise timestamping for PTP and
later for audio and other peripherals.
The ptp/e1000e patches have been acked by the relevant maintainers
and are carried in the timer tree to avoid merge ordering issues.
- Support for unregistering the current clocksource watchdog. That
lifts a limitation for switching clocksources which has been there
from day 1
- The usual pile of fixes and updates to the core and the drivers.
Nothing outstanding and exciting"
* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (26 commits)
time/timekeeping: Work around false positive GCC warning
e1000e: Adds hardware supported cross timestamp on e1000e nic
ptp: Add PTP_SYS_OFFSET_PRECISE for driver crosstimestamping
x86/tsc: Always Running Timer (ART) correlated clocksource
hrtimer: Revert CLOCK_MONOTONIC_RAW support
time: Add history to cross timestamp interface supporting slower devices
time: Add driver cross timestamp interface for higher precision time synchronization
time: Remove duplicated code in ktime_get_raw_and_real()
time: Add timekeeping snapshot code capturing system time and counter
time: Add cycles to nanoseconds translation
jiffies: Use CLOCKSOURCE_MASK instead of constant
clocksource: Introduce clocksource_freq2mult()
clockevents/drivers/exynos_mct: Implement ->set_state_oneshot_stopped()
clockevents/drivers/arm_global_timer: Implement ->set_state_oneshot_stopped()
clockevents/drivers/arm_arch_timer: Implement ->set_state_oneshot_stopped()
clocksource/drivers/arm_global_timer: Register delay timer
clocksource/drivers/lpc32xx: Support timer-based ARM delay
clocksource/drivers/lpc32xx: Support periodic mode
clocksource/drivers/lpc32xx: Don't use the prescaler counter for clockevents
clocksource/drivers/rockchip: Add err handle for rk_timer_init
...
415 lines
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415 lines
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Plaintext
menu "Clock Source drivers"
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depends on !ARCH_USES_GETTIMEOFFSET
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config CLKSRC_OF
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bool
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select CLKSRC_PROBE
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config CLKSRC_ACPI
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bool
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select CLKSRC_PROBE
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config CLKSRC_PROBE
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bool
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config CLKSRC_I8253
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bool
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config CLKEVT_I8253
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bool
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config I8253_LOCK
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bool
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config CLKBLD_I8253
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def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
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config CLKSRC_MMIO
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bool
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config DIGICOLOR_TIMER
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bool "Digicolor timer driver" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS
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select CLKSRC_MMIO
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depends on HAS_IOMEM
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help
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Enables the support for the digicolor timer driver.
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config DW_APB_TIMER
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bool "DW APB timer driver" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS
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help
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Enables the support for the dw_apb timer.
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config DW_APB_TIMER_OF
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bool
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select DW_APB_TIMER
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select CLKSRC_OF
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config ROCKCHIP_TIMER
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bool "Rockchip timer driver" if COMPILE_TEST
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depends on ARM || ARM64
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select CLKSRC_OF
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help
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Enables the support for the rockchip timer driver.
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config ARMADA_370_XP_TIMER
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bool "Armada 370 and XP timer driver" if COMPILE_TEST
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depends on ARM
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select CLKSRC_OF
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select CLKSRC_MMIO
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help
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Enables the support for the Armada 370 and XP timer driver.
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config MESON6_TIMER
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bool "Meson6 timer driver" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS
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select CLKSRC_MMIO
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help
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Enables the support for the Meson6 timer driver.
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config ORION_TIMER
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bool "Orion timer driver" if COMPILE_TEST
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depends on ARM
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select CLKSRC_OF
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select CLKSRC_MMIO
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help
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Enables the support for the Orion timer driver
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config SUN4I_TIMER
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bool "Sun4i timer driver" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS
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depends on HAS_IOMEM
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select CLKSRC_MMIO
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help
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Enables support for the Sun4i timer.
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config SUN5I_HSTIMER
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bool "Sun5i timer driver" if COMPILE_TEST
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select CLKSRC_MMIO
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depends on COMMON_CLK
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help
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Enables support the Sun5i timer.
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config TEGRA_TIMER
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bool "Tegra timer driver" if COMPILE_TEST
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select CLKSRC_MMIO
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depends on ARM
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help
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Enables support for the Tegra driver.
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config VT8500_TIMER
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bool "VT8500 timer driver" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS
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depends on HAS_IOMEM
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help
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Enables support for the VT8500 driver.
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config CADENCE_TTC_TIMER
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bool "Cadence TTC timer driver" if COMPILE_TEST
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depends on COMMON_CLK
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help
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Enables support for the cadence ttc driver.
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config ASM9260_TIMER
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bool "ASM9260 timer driver" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS
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select CLKSRC_MMIO
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select CLKSRC_OF
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help
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Enables support for the ASM9260 timer.
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config CLKSRC_NOMADIK_MTU
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bool "Nomakdik clocksource driver" if COMPILE_TEST
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depends on ARM
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select CLKSRC_MMIO
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help
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Support for Multi Timer Unit. MTU provides access
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to multiple interrupt generating programmable
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32-bit free running decrementing counters.
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config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
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bool
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depends on CLKSRC_NOMADIK_MTU
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help
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Use the Multi Timer Unit as the sched_clock.
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config CLKSRC_DBX500_PRCMU
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bool "Clocksource PRCMU Timer" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS
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depends on HAS_IOMEM
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help
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Use the always on PRCMU Timer as clocksource
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config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
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bool "Clocksource PRCMU Timer sched_clock"
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depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
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default y
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help
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Use the always on PRCMU Timer as sched_clock
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config CLKSRC_EFM32
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bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
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depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
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select CLKSRC_MMIO
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default ARCH_EFM32
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help
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Support to use the timers of EFM32 SoCs as clock source and clock
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event device.
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config CLKSRC_LPC32XX
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bool "Clocksource for LPC32XX" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
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depends on ARM
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select CLKSRC_MMIO
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select CLKSRC_OF
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help
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Support for the LPC32XX clocksource.
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config CLKSRC_PISTACHIO
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bool "Clocksource for Pistachio SoC" if COMPILE_TEST
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depends on HAS_IOMEM
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select CLKSRC_OF
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help
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Enables the clocksource for the Pistachio SoC.
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config CLKSRC_TI_32K
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bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
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depends on GENERIC_SCHED_CLOCK
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select CLKSRC_OF if OF
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help
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This option enables support for Texas Instruments 32.768 Hz clocksource
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available on many OMAP-like platforms.
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config CLKSRC_STM32
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bool "Clocksource for STM32 SoCs" if !ARCH_STM32
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depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
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select CLKSRC_MMIO
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config ARM_ARCH_TIMER
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bool
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select CLKSRC_OF if OF
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select CLKSRC_ACPI if ACPI
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config ARM_ARCH_TIMER_EVTSTREAM
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bool "Support for ARM architected timer event stream generation"
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default y if ARM_ARCH_TIMER
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depends on ARM_ARCH_TIMER
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help
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This option enables support for event stream generation based on
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the ARM architected timer. It is used for waking up CPUs executing
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the wfe instruction at a frequency represented as a power-of-2
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divisor of the clock rate.
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The main use of the event stream is wfe-based timeouts of userspace
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locking implementations. It might also be useful for imposing timeout
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on wfe to safeguard against any programming errors in case an expected
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event is not generated.
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This must be disabled for hardware validation purposes to detect any
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hardware anomalies of missing events.
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config ARM_GLOBAL_TIMER
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bool
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select CLKSRC_OF if OF
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help
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This options enables support for the ARM global timer unit
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config ARM_TIMER_SP804
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bool "Support for Dual Timer SP804 module"
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depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
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select CLKSRC_MMIO
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select CLKSRC_OF if OF
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config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
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bool
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depends on ARM_GLOBAL_TIMER
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default y
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help
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Use ARM global timer clock source as sched_clock
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config ARMV7M_SYSTICK
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bool
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select CLKSRC_OF if OF
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select CLKSRC_MMIO
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help
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This options enables support for the ARMv7M system timer unit
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config ATMEL_PIT
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select CLKSRC_OF if OF
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def_bool SOC_AT91SAM9 || SOC_SAMA5
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config ATMEL_ST
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bool
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select CLKSRC_OF
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select MFD_SYSCON
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config CLKSRC_METAG_GENERIC
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def_bool y if METAG
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help
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This option enables support for the Meta per-thread timers.
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config CLKSRC_EXYNOS_MCT
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bool "Exynos multi core timer driver" if COMPILE_TEST
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depends on ARM
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help
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Support for Multi Core Timer controller on Exynos SoCs.
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config CLKSRC_SAMSUNG_PWM
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bool "PWM timer drvier for Samsung S3C, S5P" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS
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depends on HAS_IOMEM
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help
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This is a new clocksource driver for the PWM timer found in
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Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
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for all devicetree enabled platforms. This driver will be
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needed only on systems that do not have the Exynos MCT available.
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config FSL_FTM_TIMER
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bool "Freescale FlexTimer Module driver" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS
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depends on HAS_IOMEM
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select CLKSRC_MMIO
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help
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Support for Freescale FlexTimer Module (FTM) timer.
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config VF_PIT_TIMER
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bool
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select CLKSRC_MMIO
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help
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Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
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config SYS_SUPPORTS_SH_CMT
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bool
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config MTK_TIMER
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bool "Mediatek timer driver" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
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select CLKSRC_OF
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select CLKSRC_MMIO
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help
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Support for Mediatek timer driver.
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config SYS_SUPPORTS_SH_MTU2
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bool
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config SYS_SUPPORTS_SH_TMU
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bool
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config SYS_SUPPORTS_EM_STI
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bool
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config SH_TIMER_CMT
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bool "Renesas CMT timer driver" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS
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depends on HAS_IOMEM
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default SYS_SUPPORTS_SH_CMT
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help
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This enables build of a clocksource and clockevent driver for
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the Compare Match Timer (CMT) hardware available in 16/32/48-bit
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variants on a wide range of Mobile and Automotive SoCs from Renesas.
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config SH_TIMER_MTU2
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bool "Renesas MTU2 timer driver" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS
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depends on HAS_IOMEM
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default SYS_SUPPORTS_SH_MTU2
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help
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This enables build of a clockevent driver for the Multi-Function
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Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
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This hardware comes with 16 bit-timer registers.
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config SH_TIMER_TMU
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bool "Renesas TMU timer driver" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS
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depends on HAS_IOMEM
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default SYS_SUPPORTS_SH_TMU
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help
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This enables build of a clocksource and clockevent driver for
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the 32-bit Timer Unit (TMU) hardware available on a wide range
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SoCs from Renesas.
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config EM_TIMER_STI
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bool "Renesas STI timer driver" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
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default SYS_SUPPORTS_EM_STI
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help
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This enables build of a clocksource and clockevent driver for
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the 48-bit System Timer (STI) hardware available on a SoCs
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such as EMEV2 from former NEC Electronics.
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config CLKSRC_QCOM
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bool "Qualcomm MSM timer" if COMPILE_TEST
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depends on ARM
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select CLKSRC_OF
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help
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This enables the clocksource and the per CPU clockevent driver for the
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Qualcomm SoCs.
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config CLKSRC_VERSATILE
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bool "ARM Versatile (Express) reference platforms clock source"
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depends on PLAT_VERSATILE && GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
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select CLKSRC_OF
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default y if MFD_VEXPRESS_SYSREG
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help
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This option enables clock source based on free running
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counter available in the "System Registers" block of
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ARM Versatile, RealView and Versatile Express reference
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platforms.
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config CLKSRC_MIPS_GIC
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bool
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depends on MIPS_GIC
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select CLKSRC_OF
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config CLKSRC_TANGO_XTAL
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bool "Clocksource for Tango SoC" if COMPILE_TEST
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depends on ARM
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select CLKSRC_OF
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select CLKSRC_MMIO
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help
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This enables the clocksource for Tango SoC
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config CLKSRC_PXA
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bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS
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depends on HAS_IOMEM
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select CLKSRC_MMIO
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help
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This enables OST0 support available on PXA and SA-11x0
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platforms.
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config H8300_TMR8
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bool "Clockevent timer for the H8300 platform" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
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help
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This enables the 8 bits timer for the H8300 platform.
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config H8300_TMR16
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bool "Clockevent timer for the H83069 platform" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
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help
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This enables the 16 bits timer for the H8300 platform with the
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H83069 cpu.
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config H8300_TPU
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bool "Clocksource for the H8300 platform" if COMPILE_TEST
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depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
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help
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This enables the clocksource for the H8300 platform with the
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H8S2678 cpu.
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config CLKSRC_IMX_GPT
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bool "Clocksource using i.MX GPT" if COMPILE_TEST
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depends on ARM && CLKDEV_LOOKUP
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select CLKSRC_MMIO
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config CLKSRC_ST_LPC
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bool "Low power clocksource found in the LPC" if COMPILE_TEST
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select CLKSRC_OF if OF
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depends on HAS_IOMEM
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select CLKSRC_MMIO
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help
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Enable this option to use the Low Power controller timer
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as clocksource.
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endmenu
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