560b803067
Core:
- Yet another round of improvements to make the clocksource watchdog
more robust:
- Relax the clocksource-watchdog skew criteria to match the NTP
criteria.
- Temporarily skip the watchdog when high memory latencies are
detected which can lead to false-positives.
- Provide an option to enable TSC skew detection even on systems
where TSC is marked as reliable.
Sigh!
- Initialize the restart block in the nanosleep syscalls to be directed
to the no restart function instead of doing a partial setup on entry.
This prevents an erroneous restart_syscall() invocation from
corrupting user space data. While such a situation is clearly a user
space bug, preventing this is a correctness issue and caters to the
least suprise principle.
- Ignore the hrtimer slack for realtime tasks in schedule_hrtimeout()
to align it with the nanosleep semantics.
Drivers:
- The obligatory new driver bindings for Mediatek, Rockchip and RISC-V
variants.
- Add support for the C3STOP misfeature to the RISC-V timer to handle
the case where the timer stops in deeper idle state.
- Set up a static key in the RISC-V timer correctly before first use.
- The usual small improvements and fixes all over the place
-----BEGIN PGP SIGNATURE-----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=I67j
-----END PGP SIGNATURE-----
Merge tag 'timers-core-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
"Updates for timekeeping, timers and clockevent/source drivers:
Core:
- Yet another round of improvements to make the clocksource watchdog
more robust:
- Relax the clocksource-watchdog skew criteria to match the NTP
criteria.
- Temporarily skip the watchdog when high memory latencies are
detected which can lead to false-positives.
- Provide an option to enable TSC skew detection even on systems
where TSC is marked as reliable.
Sigh!
- Initialize the restart block in the nanosleep syscalls to be
directed to the no restart function instead of doing a partial
setup on entry.
This prevents an erroneous restart_syscall() invocation from
corrupting user space data. While such a situation is clearly a
user space bug, preventing this is a correctness issue and caters
to the least suprise principle.
- Ignore the hrtimer slack for realtime tasks in schedule_hrtimeout()
to align it with the nanosleep semantics.
Drivers:
- The obligatory new driver bindings for Mediatek, Rockchip and
RISC-V variants.
- Add support for the C3STOP misfeature to the RISC-V timer to handle
the case where the timer stops in deeper idle state.
- Set up a static key in the RISC-V timer correctly before first use.
- The usual small improvements and fixes all over the place"
* tag 'timers-core-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (30 commits)
clocksource/drivers/timer-sun4i: Add CLOCK_EVT_FEAT_DYNIRQ
clocksource/drivers/em_sti: Mark driver as non-removable
clocksource/drivers/sh_tmu: Mark driver as non-removable
clocksource/drivers/riscv: Patch riscv_clock_next_event() jump before first use
clocksource/drivers/timer-microchip-pit64b: Add delay timer
clocksource/drivers/timer-microchip-pit64b: Select driver only on ARM
dt-bindings: timer: sifive,clint: add comaptibles for T-Head's C9xx
dt-bindings: timer: mediatek,mtk-timer: add MT8365
clocksource/drivers/riscv: Get rid of clocksource_arch_init() callback
clocksource/drivers/sh_cmt: Mark driver as non-removable
clocksource/drivers/timer-microchip-pit64b: Drop obsolete dependency on COMPILE_TEST
clocksource/drivers/riscv: Increase the clock source rating
clocksource/drivers/timer-riscv: Set CLOCK_EVT_FEAT_C3STOP based on DT
dt-bindings: timer: Add bindings for the RISC-V timer device
RISC-V: time: initialize hrtimer based broadcast clock event device
dt-bindings: timer: rk-timer: Add rktimer for rv1126
time/debug: Fix memory leak with using debugfs_lookup()
clocksource: Enable TSC watchdog checking of HPET and PMTMR only when requested
posix-timers: Use atomic64_try_cmpxchg() in __update_gt_cputime()
clocksource: Verify HPET and PMTMR when TSC unverified
...
725 lines
19 KiB
Plaintext
725 lines
19 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
|
|
menu "Clock Source drivers"
|
|
depends on GENERIC_CLOCKEVENTS
|
|
|
|
config TIMER_OF
|
|
bool
|
|
select TIMER_PROBE
|
|
|
|
config TIMER_ACPI
|
|
bool
|
|
select TIMER_PROBE
|
|
|
|
config TIMER_PROBE
|
|
bool
|
|
|
|
config CLKSRC_I8253
|
|
bool
|
|
|
|
config CLKEVT_I8253
|
|
bool
|
|
|
|
config I8253_LOCK
|
|
bool
|
|
|
|
config OMAP_DM_SYSTIMER
|
|
bool
|
|
select TIMER_OF
|
|
|
|
config CLKBLD_I8253
|
|
def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
|
|
|
|
config CLKSRC_MMIO
|
|
bool
|
|
|
|
config BCM2835_TIMER
|
|
bool "BCM2835 timer driver" if COMPILE_TEST
|
|
select CLKSRC_MMIO
|
|
help
|
|
Enables the support for the BCM2835 timer driver.
|
|
|
|
config BCM_KONA_TIMER
|
|
bool "BCM mobile timer driver" if COMPILE_TEST
|
|
select CLKSRC_MMIO
|
|
help
|
|
Enables the support for the BCM Kona mobile timer driver.
|
|
|
|
config DAVINCI_TIMER
|
|
bool "Texas Instruments DaVinci timer driver" if COMPILE_TEST
|
|
help
|
|
Enables the support for the TI DaVinci timer driver.
|
|
|
|
config DIGICOLOR_TIMER
|
|
bool "Digicolor timer driver" if COMPILE_TEST
|
|
select CLKSRC_MMIO
|
|
depends on HAS_IOMEM
|
|
help
|
|
Enables the support for the digicolor timer driver.
|
|
|
|
config OMAP_DM_TIMER
|
|
bool "OMAP dual-mode timer driver" if ARCH_K3 || COMPILE_TEST
|
|
default y if ARCH_K3
|
|
select TIMER_OF
|
|
help
|
|
Enables the support for the TI dual-mode timer driver.
|
|
|
|
config DW_APB_TIMER
|
|
bool "DW APB timer driver" if COMPILE_TEST
|
|
help
|
|
Enables the support for the dw_apb timer.
|
|
|
|
config DW_APB_TIMER_OF
|
|
bool
|
|
select DW_APB_TIMER
|
|
select TIMER_OF
|
|
|
|
config FTTMR010_TIMER
|
|
bool "Faraday Technology timer driver" if COMPILE_TEST
|
|
depends on HAS_IOMEM
|
|
select CLKSRC_MMIO
|
|
select TIMER_OF
|
|
select MFD_SYSCON
|
|
help
|
|
Enables support for the Faraday Technology timer block
|
|
FTTMR010.
|
|
|
|
config IXP4XX_TIMER
|
|
bool "Intel XScale IXP4xx timer driver" if COMPILE_TEST
|
|
depends on HAS_IOMEM
|
|
select CLKSRC_MMIO
|
|
select TIMER_OF
|
|
help
|
|
Enables support for the Intel XScale IXP4xx SoC timer.
|
|
|
|
config ROCKCHIP_TIMER
|
|
bool "Rockchip timer driver" if COMPILE_TEST
|
|
depends on ARM || ARM64
|
|
select TIMER_OF
|
|
select CLKSRC_MMIO
|
|
help
|
|
Enables the support for the Rockchip timer driver.
|
|
|
|
config ARMADA_370_XP_TIMER
|
|
bool "Armada 370 and XP timer driver" if COMPILE_TEST
|
|
depends on ARM
|
|
select TIMER_OF
|
|
select CLKSRC_MMIO
|
|
help
|
|
Enables the support for the Armada 370 and XP timer driver.
|
|
|
|
config MESON6_TIMER
|
|
bool "Meson6 timer driver" if COMPILE_TEST
|
|
select CLKSRC_MMIO
|
|
help
|
|
Enables the support for the Meson6 timer driver.
|
|
|
|
config ORION_TIMER
|
|
bool "Orion timer driver" if COMPILE_TEST
|
|
depends on ARM
|
|
select TIMER_OF
|
|
select CLKSRC_MMIO
|
|
help
|
|
Enables the support for the Orion timer driver
|
|
|
|
config OWL_TIMER
|
|
bool "Owl timer driver" if COMPILE_TEST
|
|
select CLKSRC_MMIO
|
|
help
|
|
Enables the support for the Actions Semi Owl timer driver.
|
|
|
|
config RDA_TIMER
|
|
bool "RDA timer driver" if COMPILE_TEST
|
|
select CLKSRC_MMIO
|
|
select TIMER_OF
|
|
help
|
|
Enables the support for the RDA Micro timer driver.
|
|
|
|
config SUN4I_TIMER
|
|
bool "Sun4i timer driver" if COMPILE_TEST
|
|
depends on HAS_IOMEM
|
|
select CLKSRC_MMIO
|
|
select TIMER_OF
|
|
help
|
|
Enables support for the Sun4i timer.
|
|
|
|
config SUN5I_HSTIMER
|
|
bool "Sun5i timer driver" if COMPILE_TEST
|
|
select CLKSRC_MMIO
|
|
depends on COMMON_CLK
|
|
help
|
|
Enables support the Sun5i timer.
|
|
|
|
config TEGRA_TIMER
|
|
bool "Tegra timer driver" if COMPILE_TEST
|
|
select CLKSRC_MMIO
|
|
select TIMER_OF
|
|
depends on ARCH_TEGRA || COMPILE_TEST
|
|
help
|
|
Enables support for the Tegra driver.
|
|
|
|
config TEGRA186_TIMER
|
|
bool "NVIDIA Tegra186 timer driver"
|
|
depends on ARCH_TEGRA || COMPILE_TEST
|
|
depends on WATCHDOG && WATCHDOG_CORE
|
|
help
|
|
Enables support for the timers and watchdogs found on NVIDIA
|
|
Tegra186 and later SoCs.
|
|
|
|
config VT8500_TIMER
|
|
bool "VT8500 timer driver" if COMPILE_TEST
|
|
depends on HAS_IOMEM
|
|
help
|
|
Enables support for the VT8500 driver.
|
|
|
|
config NPCM7XX_TIMER
|
|
bool "NPCM7xx timer driver" if COMPILE_TEST
|
|
depends on HAS_IOMEM
|
|
select TIMER_OF
|
|
select CLKSRC_MMIO
|
|
help
|
|
Enable 24-bit TIMER0 and TIMER1 counters in the NPCM7xx architecture,
|
|
where TIMER0 serves as clockevent and TIMER1 serves as clocksource.
|
|
|
|
config CADENCE_TTC_TIMER
|
|
bool "Cadence TTC timer driver" if COMPILE_TEST
|
|
depends on COMMON_CLK
|
|
help
|
|
Enables support for the Cadence TTC driver.
|
|
|
|
config ASM9260_TIMER
|
|
bool "ASM9260 timer driver" if COMPILE_TEST
|
|
select CLKSRC_MMIO
|
|
select TIMER_OF
|
|
help
|
|
Enables support for the ASM9260 timer.
|
|
|
|
config CLKSRC_NOMADIK_MTU
|
|
bool "Nomakdik clocksource driver" if COMPILE_TEST
|
|
depends on ARM
|
|
select CLKSRC_MMIO
|
|
help
|
|
Support for Multi Timer Unit. MTU provides access
|
|
to multiple interrupt generating programmable
|
|
32-bit free running decrementing counters.
|
|
|
|
config CLKSRC_DBX500_PRCMU
|
|
bool "Clocksource PRCMU Timer" if COMPILE_TEST
|
|
depends on HAS_IOMEM
|
|
help
|
|
Use the always on PRCMU Timer as clocksource.
|
|
|
|
config CLPS711X_TIMER
|
|
bool "Cirrus Logic timer driver" if COMPILE_TEST
|
|
select CLKSRC_MMIO
|
|
help
|
|
Enables support for the Cirrus Logic PS711 timer.
|
|
|
|
config MXS_TIMER
|
|
bool "MXS timer driver" if COMPILE_TEST
|
|
select CLKSRC_MMIO
|
|
select STMP_DEVICE
|
|
help
|
|
Enables support for the MXS timer.
|
|
|
|
config NSPIRE_TIMER
|
|
bool "NSpire timer driver" if COMPILE_TEST
|
|
select CLKSRC_MMIO
|
|
help
|
|
Enables support for the Nspire timer.
|
|
|
|
config KEYSTONE_TIMER
|
|
bool "Keystone timer driver" if COMPILE_TEST
|
|
depends on ARM || ARM64
|
|
select CLKSRC_MMIO
|
|
help
|
|
Enables support for the Keystone timer.
|
|
|
|
config INTEGRATOR_AP_TIMER
|
|
bool "Integrator-AP timer driver" if COMPILE_TEST
|
|
select CLKSRC_MMIO
|
|
help
|
|
Enables support for the Integrator-AP timer.
|
|
|
|
config CLKSRC_LPC32XX
|
|
bool "Clocksource for LPC32XX" if COMPILE_TEST
|
|
depends on HAS_IOMEM
|
|
depends on ARM
|
|
select CLKSRC_MMIO
|
|
select TIMER_OF
|
|
help
|
|
Support for the LPC32XX clocksource.
|
|
|
|
config CLKSRC_PISTACHIO
|
|
bool "Clocksource for Pistachio SoC"
|
|
depends on HAS_IOMEM
|
|
depends on MIPS || COMPILE_TEST
|
|
select TIMER_OF
|
|
help
|
|
Enables the clocksource for the Pistachio SoC.
|
|
|
|
config CLKSRC_TI_32K
|
|
bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
|
|
depends on GENERIC_SCHED_CLOCK
|
|
select TIMER_OF if OF
|
|
help
|
|
This option enables support for Texas Instruments 32.768 Hz clocksource
|
|
available on many OMAP-like platforms.
|
|
|
|
config CLKSRC_STM32
|
|
bool "Clocksource for STM32 SoCs" if !ARCH_STM32
|
|
depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
|
|
select CLKSRC_MMIO
|
|
select TIMER_OF
|
|
|
|
config CLKSRC_STM32_LP
|
|
bool "Low power clocksource for STM32 SoCs"
|
|
depends on MFD_STM32_LPTIMER || COMPILE_TEST
|
|
|
|
config CLKSRC_MPS2
|
|
bool "Clocksource for MPS2 SoCs" if COMPILE_TEST
|
|
depends on GENERIC_SCHED_CLOCK
|
|
select CLKSRC_MMIO
|
|
select TIMER_OF
|
|
|
|
config ARC_TIMERS
|
|
bool "Support for 32-bit TIMERn counters in ARC Cores" if COMPILE_TEST
|
|
depends on GENERIC_SCHED_CLOCK
|
|
select TIMER_OF
|
|
help
|
|
These are legacy 32-bit TIMER0 and TIMER1 counters found on all ARC cores
|
|
(ARC700 as well as ARC HS38).
|
|
TIMER0 serves as clockevent while TIMER1 provides clocksource.
|
|
|
|
config ARC_TIMERS_64BIT
|
|
bool "Support for 64-bit counters in ARC HS38 cores" if COMPILE_TEST
|
|
depends on ARC_TIMERS
|
|
select TIMER_OF
|
|
help
|
|
This enables 2 different 64-bit timers: RTC (for UP) and GFRC (for SMP).
|
|
RTC is implemented inside the core, while GFRC sits outside the core in
|
|
ARConnect IP block. Driver automatically picks one of them for clocksource
|
|
as appropriate.
|
|
|
|
config ARM_ARCH_TIMER
|
|
bool
|
|
select TIMER_OF if OF
|
|
select TIMER_ACPI if ACPI
|
|
|
|
config ARM_ARCH_TIMER_EVTSTREAM
|
|
bool "Enable ARM architected timer event stream generation by default"
|
|
default y if ARM_ARCH_TIMER
|
|
depends on ARM_ARCH_TIMER
|
|
help
|
|
This option enables support by default for event stream generation
|
|
based on the ARM architected timer. It is used for waking up CPUs
|
|
executing the wfe instruction at a frequency represented as a
|
|
power-of-2 divisor of the clock rate. The behaviour can also be
|
|
overridden on the command line using the
|
|
clocksource.arm_arch_timer.evtstream parameter.
|
|
The main use of the event stream is wfe-based timeouts of userspace
|
|
locking implementations. It might also be useful for imposing timeout
|
|
on wfe to safeguard against any programming errors in case an expected
|
|
event is not generated.
|
|
This must be disabled for hardware validation purposes to detect any
|
|
hardware anomalies of missing events.
|
|
|
|
config ARM_ARCH_TIMER_OOL_WORKAROUND
|
|
bool
|
|
|
|
config FSL_ERRATUM_A008585
|
|
bool "Workaround for Freescale/NXP Erratum A-008585"
|
|
default y
|
|
depends on ARM_ARCH_TIMER && ARM64
|
|
select ARM_ARCH_TIMER_OOL_WORKAROUND
|
|
help
|
|
This option enables a workaround for Freescale/NXP Erratum
|
|
A-008585 ("ARM generic timer may contain an erroneous
|
|
value"). The workaround will only be active if the
|
|
fsl,erratum-a008585 property is found in the timer node.
|
|
|
|
config HISILICON_ERRATUM_161010101
|
|
bool "Workaround for Hisilicon Erratum 161010101"
|
|
default y
|
|
select ARM_ARCH_TIMER_OOL_WORKAROUND
|
|
depends on ARM_ARCH_TIMER && ARM64
|
|
help
|
|
This option enables a workaround for Hisilicon Erratum
|
|
161010101. The workaround will be active if the hisilicon,erratum-161010101
|
|
property is found in the timer node.
|
|
|
|
config ARM64_ERRATUM_858921
|
|
bool "Workaround for Cortex-A73 erratum 858921"
|
|
default y
|
|
select ARM_ARCH_TIMER_OOL_WORKAROUND
|
|
depends on ARM_ARCH_TIMER && ARM64
|
|
help
|
|
This option enables a workaround applicable to Cortex-A73
|
|
(all versions), whose counter may return incorrect values.
|
|
The workaround will be dynamically enabled when an affected
|
|
core is detected.
|
|
|
|
config SUN50I_ERRATUM_UNKNOWN1
|
|
bool "Workaround for Allwinner A64 erratum UNKNOWN1"
|
|
default y
|
|
depends on ARM_ARCH_TIMER && ARM64 && ARCH_SUNXI
|
|
select ARM_ARCH_TIMER_OOL_WORKAROUND
|
|
help
|
|
This option enables a workaround for instability in the timer on
|
|
the Allwinner A64 SoC. The workaround will only be active if the
|
|
allwinner,erratum-unknown1 property is found in the timer node.
|
|
|
|
config ARM_GLOBAL_TIMER
|
|
bool "Support for the ARM global timer" if COMPILE_TEST
|
|
select TIMER_OF if OF
|
|
depends on ARM
|
|
help
|
|
This option enables support for the ARM global timer unit.
|
|
|
|
config ARM_GT_INITIAL_PRESCALER_VAL
|
|
int "ARM global timer initial prescaler value"
|
|
default 2 if ARCH_ZYNQ
|
|
default 1
|
|
depends on ARM_GLOBAL_TIMER
|
|
help
|
|
When the ARM global timer initializes, its current rate is declared
|
|
to the kernel and maintained forever. Should its parent clock
|
|
change, the driver tries to fix the timer's internal prescaler.
|
|
On some machs (i.e. Zynq) the initial prescaler value thus poses
|
|
bounds about how much the parent clock is allowed to decrease or
|
|
increase wrt the initial clock value.
|
|
This affects CPU_FREQ max delta from the initial frequency.
|
|
|
|
config ARM_TIMER_SP804
|
|
bool "Support for Dual Timer SP804 module" if COMPILE_TEST
|
|
depends on GENERIC_SCHED_CLOCK && HAVE_CLK
|
|
select CLKSRC_MMIO
|
|
select TIMER_OF if OF
|
|
|
|
config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
|
|
bool
|
|
depends on ARM_GLOBAL_TIMER
|
|
default y
|
|
help
|
|
Use ARM global timer clock source as sched_clock.
|
|
|
|
config ARMV7M_SYSTICK
|
|
bool "Support for the ARMv7M system time" if COMPILE_TEST
|
|
select TIMER_OF if OF
|
|
select CLKSRC_MMIO
|
|
help
|
|
This option enables support for the ARMv7M system timer unit.
|
|
|
|
config ATMEL_PIT
|
|
bool "Atmel PIT support" if COMPILE_TEST
|
|
depends on HAS_IOMEM
|
|
select TIMER_OF if OF
|
|
help
|
|
Support for the Periodic Interval Timer found on Atmel SoCs.
|
|
|
|
config ATMEL_ST
|
|
bool "Atmel ST timer support" if COMPILE_TEST
|
|
depends on HAS_IOMEM
|
|
select TIMER_OF
|
|
select MFD_SYSCON
|
|
help
|
|
Support for the Atmel ST timer.
|
|
|
|
config ATMEL_TCB_CLKSRC
|
|
bool "Atmel TC Block timer driver" if COMPILE_TEST
|
|
depends on ARM && HAS_IOMEM
|
|
select TIMER_OF if OF
|
|
help
|
|
Support for Timer Counter Blocks on Atmel SoCs.
|
|
|
|
config CLKSRC_EXYNOS_MCT
|
|
bool "Exynos multi core timer driver" if COMPILE_TEST
|
|
depends on ARM || ARM64
|
|
depends on ARCH_ARTPEC || ARCH_EXYNOS || COMPILE_TEST
|
|
help
|
|
Support for Multi Core Timer controller on Exynos SoCs.
|
|
|
|
config CLKSRC_SAMSUNG_PWM
|
|
bool "PWM timer driver for Samsung S3C, S5P" if COMPILE_TEST
|
|
depends on HAS_IOMEM
|
|
depends on ARCH_EXYNOS || ARCH_S3C64XX || ARCH_S5PV210 || COMPILE_TEST
|
|
help
|
|
This is a new clocksource driver for the PWM timer found in
|
|
Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
|
|
for all devicetree enabled platforms. This driver will be
|
|
needed only on systems that do not have the Exynos MCT available.
|
|
|
|
config FSL_FTM_TIMER
|
|
bool "Freescale FlexTimer Module driver" if COMPILE_TEST
|
|
depends on HAS_IOMEM
|
|
select CLKSRC_MMIO
|
|
help
|
|
Support for Freescale FlexTimer Module (FTM) timer.
|
|
|
|
config VF_PIT_TIMER
|
|
bool
|
|
select CLKSRC_MMIO
|
|
help
|
|
Support for Periodic Interrupt Timer on Freescale Vybrid Family SoCs.
|
|
|
|
config OXNAS_RPS_TIMER
|
|
bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST
|
|
select TIMER_OF
|
|
select CLKSRC_MMIO
|
|
help
|
|
This enables support for the Oxford Semiconductor OXNAS RPS timers.
|
|
|
|
config SYS_SUPPORTS_SH_CMT
|
|
bool
|
|
|
|
config MTK_TIMER
|
|
bool "Mediatek timer driver" if COMPILE_TEST
|
|
depends on HAS_IOMEM
|
|
select TIMER_OF
|
|
select CLKSRC_MMIO
|
|
help
|
|
Support for Mediatek timer driver.
|
|
|
|
config SPRD_TIMER
|
|
bool "Spreadtrum timer driver" if EXPERT
|
|
depends on HAS_IOMEM
|
|
depends on (ARCH_SPRD || COMPILE_TEST)
|
|
default ARCH_SPRD
|
|
select TIMER_OF
|
|
help
|
|
Enables support for the Spreadtrum timer driver.
|
|
|
|
config SYS_SUPPORTS_SH_MTU2
|
|
bool
|
|
|
|
config SYS_SUPPORTS_SH_TMU
|
|
bool
|
|
|
|
config SYS_SUPPORTS_EM_STI
|
|
bool
|
|
|
|
config CLKSRC_JCORE_PIT
|
|
bool "J-Core PIT timer driver" if COMPILE_TEST
|
|
depends on OF
|
|
depends on HAS_IOMEM
|
|
select CLKSRC_MMIO
|
|
help
|
|
This enables build of clocksource and clockevent driver for
|
|
the integrated PIT in the J-Core synthesizable, open source SoC.
|
|
|
|
config SH_TIMER_CMT
|
|
bool "Renesas CMT timer driver" if COMPILE_TEST
|
|
depends on HAS_IOMEM
|
|
default SYS_SUPPORTS_SH_CMT
|
|
help
|
|
This enables build of a clocksource and clockevent driver for
|
|
the Compare Match Timer (CMT) hardware available in 16/32/48-bit
|
|
variants on a wide range of Mobile and Automotive SoCs from Renesas.
|
|
|
|
config SH_TIMER_MTU2
|
|
bool "Renesas MTU2 timer driver" if COMPILE_TEST
|
|
depends on HAS_IOMEM
|
|
default SYS_SUPPORTS_SH_MTU2
|
|
help
|
|
This enables build of a clockevent driver for the Multi-Function
|
|
Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
|
|
This hardware comes with 16-bit timer registers.
|
|
|
|
config RENESAS_OSTM
|
|
bool "Renesas OSTM timer driver"
|
|
depends on ARCH_RENESAS || COMPILE_TEST
|
|
select CLKSRC_MMIO
|
|
select TIMER_OF
|
|
help
|
|
Enables the support for the Renesas OSTM.
|
|
|
|
config SH_TIMER_TMU
|
|
bool "Renesas TMU timer driver" if COMPILE_TEST
|
|
depends on HAS_IOMEM
|
|
default SYS_SUPPORTS_SH_TMU
|
|
help
|
|
This enables build of a clocksource and clockevent driver for
|
|
the 32-bit Timer Unit (TMU) hardware available on a wide range
|
|
SoCs from Renesas.
|
|
|
|
config EM_TIMER_STI
|
|
bool "Renesas STI timer driver" if COMPILE_TEST
|
|
depends on HAS_IOMEM
|
|
default SYS_SUPPORTS_EM_STI
|
|
help
|
|
This enables build of a clocksource and clockevent driver for
|
|
the 48-bit System Timer (STI) hardware available on a SoCs
|
|
such as EMEV2 from former NEC Electronics.
|
|
|
|
config CLKSRC_QCOM
|
|
bool "Qualcomm MSM timer" if COMPILE_TEST
|
|
depends on ARM
|
|
select TIMER_OF
|
|
help
|
|
This enables the clocksource and the per CPU clockevent driver for the
|
|
Qualcomm SoCs.
|
|
|
|
config CLKSRC_VERSATILE
|
|
bool "ARM Versatile (Express) reference platforms clock source" if COMPILE_TEST
|
|
depends on GENERIC_SCHED_CLOCK
|
|
select TIMER_OF
|
|
default y if (ARCH_VEXPRESS || ARCH_VERSATILE) && ARM
|
|
help
|
|
This option enables clock source based on free running
|
|
counter available in the "System Registers" block of
|
|
ARM Versatile and Versatile Express reference platforms.
|
|
|
|
config CLKSRC_MIPS_GIC
|
|
bool
|
|
depends on MIPS_GIC
|
|
select CLOCKSOURCE_WATCHDOG
|
|
select TIMER_OF
|
|
|
|
config CLKSRC_PXA
|
|
bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
|
|
depends on HAS_IOMEM
|
|
select CLKSRC_MMIO
|
|
help
|
|
This enables OST0 support available on PXA and SA-11x0
|
|
platforms.
|
|
|
|
config CLKSRC_IMX_GPT
|
|
bool "Clocksource using i.MX GPT" if COMPILE_TEST
|
|
depends on (ARM || ARM64) && HAVE_CLK
|
|
select CLKSRC_MMIO
|
|
|
|
config CLKSRC_IMX_TPM
|
|
bool "Clocksource using i.MX TPM" if COMPILE_TEST
|
|
depends on (ARM || ARM64) && HAVE_CLK
|
|
select CLKSRC_MMIO
|
|
select TIMER_OF
|
|
help
|
|
Enable this option to use IMX Timer/PWM Module (TPM) timer as
|
|
clocksource.
|
|
|
|
config TIMER_IMX_SYS_CTR
|
|
bool "i.MX system counter timer" if COMPILE_TEST
|
|
select TIMER_OF
|
|
help
|
|
Enable this option to use i.MX system counter timer as a
|
|
clockevent.
|
|
|
|
config CLKSRC_ST_LPC
|
|
bool "Low power clocksource found in the LPC" if COMPILE_TEST
|
|
select TIMER_OF if OF
|
|
depends on HAS_IOMEM
|
|
select CLKSRC_MMIO
|
|
help
|
|
Enable this option to use the Low Power controller timer
|
|
as clocksource.
|
|
|
|
config GXP_TIMER
|
|
bool "GXP timer driver" if COMPILE_TEST && !ARCH_HPE
|
|
default ARCH_HPE
|
|
select TIMER_OF if OF
|
|
help
|
|
Provides a driver for the timer control found on HPE
|
|
GXP SOCs. This is required for all GXP SOCs.
|
|
|
|
config RISCV_TIMER
|
|
bool "Timer for the RISC-V platform" if COMPILE_TEST
|
|
depends on GENERIC_SCHED_CLOCK && RISCV && RISCV_SBI
|
|
select TIMER_PROBE
|
|
select TIMER_OF
|
|
help
|
|
This enables the per-hart timer built into all RISC-V systems, which
|
|
is accessed via both the SBI and the rdcycle instruction. This is
|
|
required for all RISC-V systems.
|
|
|
|
config CLINT_TIMER
|
|
bool "CLINT Timer for the RISC-V platform" if COMPILE_TEST
|
|
depends on GENERIC_SCHED_CLOCK && RISCV
|
|
select TIMER_PROBE
|
|
select TIMER_OF
|
|
help
|
|
This option enables the CLINT timer for RISC-V systems. The CLINT
|
|
driver is usually used for NoMMU RISC-V systems.
|
|
|
|
config CSKY_MP_TIMER
|
|
bool "SMP Timer for the C-SKY platform" if COMPILE_TEST
|
|
depends on CSKY
|
|
select TIMER_OF
|
|
help
|
|
Say yes here to enable C-SKY SMP timer driver used for C-SKY SMP
|
|
system.
|
|
csky,mptimer is not only used in SMP system, it also could be used in
|
|
single core system. It's not a mmio reg and it uses mtcr/mfcr instruction.
|
|
|
|
config GX6605S_TIMER
|
|
bool "Gx6605s SOC system timer driver" if COMPILE_TEST
|
|
depends on CSKY
|
|
select CLKSRC_MMIO
|
|
select TIMER_OF
|
|
help
|
|
This option enables support for gx6605s SOC's timer.
|
|
|
|
config MILBEAUT_TIMER
|
|
bool "Milbeaut timer driver" if COMPILE_TEST
|
|
depends on OF
|
|
depends on ARM
|
|
select TIMER_OF
|
|
select CLKSRC_MMIO
|
|
help
|
|
Enables the support for Milbeaut timer driver.
|
|
|
|
config MSC313E_TIMER
|
|
bool "MSC313E timer driver" if COMPILE_TEST
|
|
select TIMER_OF
|
|
select CLKSRC_MMIO
|
|
help
|
|
Enables support for the MStar MSC313E timer driver.
|
|
This provides access to multiple interrupt generating
|
|
programmable 32-bit free running incrementing counters.
|
|
|
|
config INGENIC_TIMER
|
|
bool "Clocksource/timer using the TCU in Ingenic JZ SoCs"
|
|
default MACH_INGENIC
|
|
depends on MIPS || COMPILE_TEST
|
|
depends on COMMON_CLK
|
|
select MFD_SYSCON
|
|
select TIMER_OF
|
|
select IRQ_DOMAIN
|
|
help
|
|
Support for the timer/counter unit of the Ingenic JZ SoCs.
|
|
|
|
config INGENIC_SYSOST
|
|
bool "Clocksource/timer using the SYSOST in Ingenic X SoCs"
|
|
depends on MIPS || COMPILE_TEST
|
|
depends on COMMON_CLK
|
|
select MFD_SYSCON
|
|
select TIMER_OF
|
|
select IRQ_DOMAIN
|
|
help
|
|
Support for the SYSOST of the Ingenic X Series SoCs.
|
|
|
|
config INGENIC_OST
|
|
bool "Clocksource using the OST in Ingenic JZ SoCs"
|
|
depends on MIPS || COMPILE_TEST
|
|
depends on COMMON_CLK
|
|
select MFD_SYSCON
|
|
help
|
|
Support for the Operating System Timer of the Ingenic JZ SoCs.
|
|
|
|
config MICROCHIP_PIT64B
|
|
bool "Microchip PIT64B support"
|
|
depends on OF && ARM
|
|
select TIMER_OF
|
|
help
|
|
This option enables Microchip PIT64B timer for Atmel
|
|
based system. It supports the oneshot, the periodic
|
|
modes and high resolution. It is used as a clocksource
|
|
and a clockevent.
|
|
|
|
config GOLDFISH_TIMER
|
|
bool "Clocksource using goldfish-rtc"
|
|
depends on M68K || COMPILE_TEST
|
|
depends on RTC_DRV_GOLDFISH
|
|
help
|
|
Support for the timer/counter of goldfish-rtc
|
|
|
|
endmenu
|