menu "Clock Source drivers" config CLKSRC_OF bool config CLKSRC_I8253 bool config CLKEVT_I8253 bool config I8253_LOCK bool config CLKBLD_I8253 def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK config CLKSRC_MMIO bool config DIGICOLOR_TIMER bool config DW_APB_TIMER bool config DW_APB_TIMER_OF bool select DW_APB_TIMER select CLKSRC_OF config ROCKCHIP_TIMER bool select CLKSRC_OF config ARMADA_370_XP_TIMER bool select CLKSRC_OF config MESON6_TIMER bool select CLKSRC_MMIO config ORION_TIMER select CLKSRC_OF select CLKSRC_MMIO bool config SUN4I_TIMER select CLKSRC_MMIO bool config SUN5I_HSTIMER select CLKSRC_MMIO bool config TEGRA_TIMER bool config VT8500_TIMER bool config CADENCE_TTC_TIMER bool config ASM9260_TIMER bool select CLKSRC_MMIO select CLKSRC_OF config CLKSRC_NOMADIK_MTU bool depends on (ARCH_NOMADIK || ARCH_U8500) 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_NOMADIK_MTU_SCHED_CLOCK bool depends on CLKSRC_NOMADIK_MTU help Use the Multi Timer Unit as the sched_clock. config CLKSRC_DBX500_PRCMU bool "Clocksource PRCMU Timer" depends on UX500_SOC_DB8500 default y help Use the always on PRCMU Timer as clocksource config CLKSRC_DBX500_PRCMU_SCHED_CLOCK bool "Clocksource PRCMU Timer sched_clock" depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK) default y help Use the always on PRCMU Timer as sched_clock config CLKSRC_EFM32 bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32 depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST) select CLKSRC_MMIO default ARCH_EFM32 help Support to use the timers of EFM32 SoCs as clock source and clock event device. config ARM_ARCH_TIMER bool select CLKSRC_OF if OF config ARM_ARCH_TIMER_EVTSTREAM bool "Support for ARM architected timer event stream generation" default y if ARM_ARCH_TIMER depends on ARM_ARCH_TIMER help This option enables support 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 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_GLOBAL_TIMER bool select CLKSRC_OF if OF help This options enables support for the ARM global timer unit 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 ATMEL_PIT select CLKSRC_OF if OF def_bool SOC_AT91SAM9 || SOC_SAMA5 config ATMEL_ST bool select CLKSRC_OF select MFD_SYSCON config CLKSRC_METAG_GENERIC def_bool y if METAG help This option enables support for the Meta per-thread timers. config CLKSRC_EXYNOS_MCT def_bool y if ARCH_EXYNOS depends on !ARM64 help Support for Multi Core Timer controller on Exynos SoCs. config CLKSRC_SAMSUNG_PWM bool 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 help Support for Freescale FlexTimer Module (FTM) timer. config VF_PIT_TIMER bool help Support for Period Interrupt Timer on Freescale Vybrid Family SoCs. config SYS_SUPPORTS_SH_CMT bool config MTK_TIMER select CLKSRC_OF select CLKSRC_MMIO bool config SYS_SUPPORTS_SH_MTU2 bool config SYS_SUPPORTS_SH_TMU bool config SYS_SUPPORTS_EM_STI bool config SH_TIMER_CMT bool "Renesas CMT timer driver" if COMPILE_TEST depends on GENERIC_CLOCKEVENTS 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 GENERIC_CLOCKEVENTS 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 SH_TIMER_TMU bool "Renesas TMU timer driver" if COMPILE_TEST depends on GENERIC_CLOCKEVENTS 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 GENERIC_CLOCKEVENTS && 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 config CLKSRC_VERSATILE bool "ARM Versatile (Express) reference platforms clock source" depends on PLAT_VERSATILE && GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET select CLKSRC_OF default y if MFD_VEXPRESS_SYSREG help This option enables clock source based on free running counter available in the "System Registers" block of ARM Versatile, RealView and Versatile Express reference platforms. config CLKSRC_MIPS_GIC bool depends on MIPS_GIC select CLKSRC_OF config CLKSRC_PXA def_bool y if ARCH_PXA || ARCH_SA1100 select CLKSRC_OF if USE_OF help This enables OST0 support available on PXA and SA-11x0 platforms. endmenu