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_TIMER bool 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 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 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 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 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 depends on ARM help Enables support for the Tegra driver. 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 CLKSRC_MMIO help Enable 24-bit TIMER0 and TIMER1 counters in the NPCM7xx architecture, While 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_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" 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 ATLAS7_TIMER bool "Atlas7 timer driver" if COMPILE_TEST select CLKSRC_MMIO help Enables support for the Atlas7 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 PRIMA2_TIMER bool "Prima2 timer driver" if COMPILE_TEST select CLKSRC_MMIO help Enables support for the Prima2 timer. config U300_TIMER bool "U300 timer driver" if COMPILE_TEST depends on ARM select CLKSRC_MMIO help Enables support for the U300 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_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 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" if COMPILE_TEST depends on HAS_IOMEM 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_NPS bool "NPS400 clocksource driver" if COMPILE_TEST depends on !PHYS_ADDR_T_64BIT select CLKSRC_MMIO select TIMER_OF if OF help NPS400 clocksource support. Got 64 bit counter with update rate up to 1000MHz. This counter is accessed via couple of 32 bit memory mapped registers. 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_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 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 ARM_GLOBAL_TIMER bool "Support for the ARM global timer" if COMPILE_TEST select TIMER_OF if OF depends on ARM help This options enables support for the ARM global timer unit config ARM_TIMER_SP804 bool "Support for Dual Timer SP804 module" depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP 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 options enables support for the ARMv7M system timer unit config ATMEL_PIT select TIMER_OF if OF def_bool SOC_AT91SAM9 || SOC_SAMA5 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 CLKSRC_EXYNOS_MCT bool "Exynos multi core timer driver" if COMPILE_TEST depends on ARM || ARM64 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 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 Period 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" if COMPILE_TEST select CLKSRC_MMIO 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 && !ARCH_USES_GETTIMEOFFSET select TIMER_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 TIMER_OF config CLKSRC_TANGO_XTAL bool "Clocksource for Tango SoC" if COMPILE_TEST depends on ARM select TIMER_OF select CLKSRC_MMIO help This enables the clocksource for Tango SoC 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 H8300_TMR8 bool "Clockevent timer for the H8300 platform" if COMPILE_TEST depends on HAS_IOMEM help This enables the 8 bits timer for the H8300 platform. config H8300_TMR16 bool "Clockevent timer for the H83069 platform" if COMPILE_TEST depends on HAS_IOMEM help This enables the 16 bits timer for the H8300 platform with the H83069 cpu. config H8300_TPU bool "Clocksource for the H8300 platform" if COMPILE_TEST depends on HAS_IOMEM help This enables the clocksource for the H8300 platform with the H8S2678 cpu. config CLKSRC_IMX_GPT bool "Clocksource using i.MX GPT" if COMPILE_TEST depends on ARM && CLKDEV_LOOKUP select CLKSRC_MMIO config CLKSRC_IMX_TPM bool "Clocksource using i.MX TPM" if COMPILE_TEST depends on ARM && CLKDEV_LOOKUP select CLKSRC_MMIO help Enable this option to use IMX Timer/PWM Module (TPM) timer as clocksource. 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 ATCPIT100_TIMER bool "ATCPIT100 timer driver" depends on NDS32 || COMPILE_TEST depends on HAS_IOMEM select TIMER_OF default NDS32 help This option enables support for the Andestech ATCPIT100 timers. config RISCV_TIMER bool "Timer for the RISC-V platform" depends on RISCV default y 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 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 single core system. It's not a mmio reg and it use mtcr/mfcr instruction. endmenu