# 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" 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 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 MTK_CPUX_TIMER bool "MediaTek CPUX timer driver" if COMPILE_TEST depends on HAS_IOMEM default ARCH_MEDIATEK select TIMER_OF select CLKSRC_MMIO help Support for MediaTek CPUXGPT 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_LOONGSON1_PWM bool "Clocksource using Loongson1 PWM" depends on MACH_LOONGSON32 || COMPILE_TEST select MIPS_EXTERNAL_TIMER select TIMER_OF help Enable this option to use Loongson1 PWM timer as clocksource instead of the performance counter. 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