# SPDX-License-Identifier: GPL-2.0-only
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menu "Clock Source drivers"
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depends on GENERIC_CLOCKEVENTS
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config TIMER_OF
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bool
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select TIMER_PROBE
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config TIMER_ACPI
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bool
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select TIMER_PROBE
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config TIMER_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 OMAP_DM_TIMER
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bool
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select TIMER_OF
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imply GENERIC_CLOCKSOURCE_VDSO
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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 BCM2835_TIMER
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bool "BCM2835 timer driver" if COMPILE_TEST
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select CLKSRC_MMIO
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help
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Enables the support for the BCM2835 timer driver.
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config BCM_KONA_TIMER
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bool "BCM mobile timer driver" if COMPILE_TEST
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select CLKSRC_MMIO
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help
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Enables the support for the BCM Kona mobile timer driver.
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config DAVINCI_TIMER
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bool "Texas Instruments DaVinci timer driver" if COMPILE_TEST
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help
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Enables the support for the TI DaVinci timer driver.
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config DIGICOLOR_TIMER
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bool "Digicolor timer driver" if COMPILE_TEST
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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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select CLKSRC_MMIO
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imply GENERIC_CLOCKSOURCE_VDSO
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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 TIMER_OF
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config FTTMR010_TIMER
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bool "Faraday Technology timer driver" if COMPILE_TEST
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depends on HAS_IOMEM
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select CLKSRC_MMIO
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select TIMER_OF
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select MFD_SYSCON
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help
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Enables support for the Faraday Technology timer block
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FTTMR010.
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config IXP4XX_TIMER
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bool "Intel XScale IXP4xx timer driver" if COMPILE_TEST
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depends on HAS_IOMEM
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select CLKSRC_MMIO
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select TIMER_OF if OF
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help
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Enables support for the Intel XScale IXP4xx SoC timer.
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config ROCKCHIP_TIMER
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tristate "Rockchip timer driver"
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default ARCH_ROCKCHIP
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depends on ARCH_ROCKCHIP || COMPILE_TEST
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depends on ARM || ARM64
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select TIMER_OF
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select CLKSRC_MMIO
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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 TIMER_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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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 TIMER_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 OWL_TIMER
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bool "Owl timer driver" if COMPILE_TEST
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select CLKSRC_MMIO
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help
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Enables the support for the Actions Semi Owl timer driver.
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config RDA_TIMER
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bool "RDA timer driver" if COMPILE_TEST
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select CLKSRC_MMIO
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select TIMER_OF
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help
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Enables the support for the RDA Micro timer driver.
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config SUN4I_TIMER
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bool "Sun4i timer driver"
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depends on HAS_IOMEM
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select CLKSRC_MMIO
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select TIMER_OF
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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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select TIMER_OF
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depends on ARCH_TEGRA || COMPILE_TEST
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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 HAS_IOMEM
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help
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Enables support for the VT8500 driver.
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config NPCM7XX_TIMER
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bool "NPCM7xx timer driver" if COMPILE_TEST
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depends on HAS_IOMEM
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select TIMER_OF
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select CLKSRC_MMIO
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help
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Enable 24-bit TIMER0 and TIMER1 counters in the NPCM7xx architecture,
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where TIMER0 serves as clockevent and TIMER1 serves as clocksource.
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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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select CLKSRC_MMIO
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select TIMER_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_DBX500_PRCMU
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bool "Clocksource PRCMU Timer" if COMPILE_TEST
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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 CLPS711X_TIMER
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bool "Cirrus Logic timer driver" if COMPILE_TEST
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select CLKSRC_MMIO
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help
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Enables support for the Cirrus Logic PS711 timer.
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config ATLAS7_TIMER
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bool "Atlas7 timer driver" if COMPILE_TEST
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select CLKSRC_MMIO
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help
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Enables support for the Atlas7 timer.
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config MXS_TIMER
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bool "MXS timer driver" if COMPILE_TEST
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select CLKSRC_MMIO
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select STMP_DEVICE
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help
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Enables support for the MXS timer.
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config PRIMA2_TIMER
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bool "Prima2 timer driver" if COMPILE_TEST
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select CLKSRC_MMIO
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help
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Enables support for the Prima2 timer.
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config U300_TIMER
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bool "U300 timer 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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Enables support for the U300 timer.
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config NSPIRE_TIMER
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bool "NSpire timer driver" if COMPILE_TEST
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select CLKSRC_MMIO
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help
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Enables support for the Nspire timer.
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config KEYSTONE_TIMER
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bool "Keystone timer driver" if COMPILE_TEST
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depends on ARM || ARM64
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select CLKSRC_MMIO
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help
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Enables support for the Keystone timer.
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config INTEGRATOR_AP_TIMER
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bool "Integrator-AP timer driver" if COMPILE_TEST
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select CLKSRC_MMIO
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help
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Enables support for the Integrator-AP timer.
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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 HAS_IOMEM
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depends on ARM
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select CLKSRC_MMIO
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select TIMER_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 TIMER_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 TIMER_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_NPS
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bool "NPS400 clocksource driver" if COMPILE_TEST
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depends on !PHYS_ADDR_T_64BIT
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select CLKSRC_MMIO
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select TIMER_OF if OF
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help
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NPS400 clocksource support.
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It has a 64-bit counter with update rate up to 1000MHz.
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This counter is accessed via couple of 32-bit memory-mapped registers.
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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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select TIMER_OF
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config CLKSRC_STM32_LP
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bool "Low power clocksource for STM32 SoCs"
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depends on MFD_STM32_LPTIMER || COMPILE_TEST
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config CLKSRC_MPS2
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bool "Clocksource for MPS2 SoCs" if COMPILE_TEST
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depends on GENERIC_SCHED_CLOCK
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select CLKSRC_MMIO
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select TIMER_OF
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config ARC_TIMERS
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bool "Support for 32-bit TIMERn counters in ARC Cores" if COMPILE_TEST
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depends on GENERIC_SCHED_CLOCK
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select TIMER_OF
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help
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These are legacy 32-bit TIMER0 and TIMER1 counters found on all ARC cores
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(ARC700 as well as ARC HS38).
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TIMER0 serves as clockevent while TIMER1 provides clocksource.
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config ARC_TIMERS_64BIT
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bool "Support for 64-bit counters in ARC HS38 cores" if COMPILE_TEST
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depends on ARC_TIMERS
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select TIMER_OF
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help
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This enables 2 different 64-bit timers: RTC (for UP) and GFRC (for SMP).
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RTC is implemented inside the core, while GFRC sits outside the core in
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ARConnect IP block. Driver automatically picks one of them for clocksource
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as appropriate.
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config ARM_ARCH_TIMER
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bool
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select TIMER_OF if OF
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select TIMER_ACPI if ACPI
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config ARM_ARCH_TIMER_EVTSTREAM
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bool "Enable ARM architected timer event stream generation by default"
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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 by default for event stream generation
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based on the ARM architected timer. It is used for waking up CPUs
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executing the wfe instruction at a frequency represented as a
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power-of-2 divisor of the clock rate. The behaviour can also be
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overridden on the command line using the
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clocksource.arm_arch_timer.evtstream parameter.
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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_ARCH_TIMER_OOL_WORKAROUND
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bool
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config FSL_ERRATUM_A008585
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bool "Workaround for Freescale/NXP Erratum A-008585"
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default y
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depends on ARM_ARCH_TIMER && ARM64
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select ARM_ARCH_TIMER_OOL_WORKAROUND
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help
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This option enables a workaround for Freescale/NXP Erratum
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A-008585 ("ARM generic timer may contain an erroneous
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value"). The workaround will only be active if the
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fsl,erratum-a008585 property is found in the timer node.
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config HISILICON_ERRATUM_161010101
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bool "Workaround for Hisilicon Erratum 161010101"
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default y
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select ARM_ARCH_TIMER_OOL_WORKAROUND
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depends on ARM_ARCH_TIMER && ARM64
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help
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This option enables a workaround for Hisilicon Erratum
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161010101. The workaround will be active if the hisilicon,erratum-161010101
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property is found in the timer node.
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config ARM64_ERRATUM_858921
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bool "Workaround for Cortex-A73 erratum 858921"
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default y
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select ARM_ARCH_TIMER_OOL_WORKAROUND
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depends on ARM_ARCH_TIMER && ARM64
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help
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This option enables a workaround applicable to Cortex-A73
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(all versions), whose counter may return incorrect values.
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The workaround will be dynamically enabled when an affected
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core is detected.
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config SUN50I_ERRATUM_UNKNOWN1
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bool "Workaround for Allwinner A64 erratum UNKNOWN1"
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default y
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depends on ARM_ARCH_TIMER && ARM64 && ARCH_SUNXI
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select ARM_ARCH_TIMER_OOL_WORKAROUND
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help
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This option enables a workaround for instability in the timer on
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the Allwinner A64 SoC. The workaround will only be active if the
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allwinner,erratum-unknown1 property is found in the timer node.
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config ARM_GLOBAL_TIMER
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bool "Support for the ARM global timer" if COMPILE_TEST
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select TIMER_OF if OF
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imply GENERIC_CLOCKSOURCE_VDSO
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depends on ARM
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help
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This option 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" if COMPILE_TEST
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depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
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select CLKSRC_MMIO
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select TIMER_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 "Support for the ARMv7M system time" if COMPILE_TEST
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select TIMER_OF if OF
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select CLKSRC_MMIO
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help
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This option enables support for the ARMv7M system timer unit.
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config ATMEL_PIT
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bool "Atmel PIT support" if COMPILE_TEST
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depends on HAS_IOMEM
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select TIMER_OF if OF
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help
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Support for the Periodic Interval Timer found on Atmel SoCs.
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config ATMEL_ST
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bool "Atmel ST timer support" if COMPILE_TEST
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depends on HAS_IOMEM
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select TIMER_OF
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select MFD_SYSCON
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help
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Support for the Atmel ST timer.
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config ATMEL_TCB_CLKSRC
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bool "Atmel TC Block timer driver" if COMPILE_TEST
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depends on ARM && HAS_IOMEM
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select TIMER_OF if OF
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help
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Support for Timer Counter Blocks on Atmel SoCs.
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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 || ARM64
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imply GENERIC_CLOCKSOURCE_VDSO
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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 driver for Samsung S3C, S5P" if COMPILE_TEST
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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 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 Periodic Interrupt Timer on Freescale Vybrid Family SoCs.
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config OXNAS_RPS_TIMER
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bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST
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select TIMER_OF
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select CLKSRC_MMIO
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help
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This enables support for the Oxford Semiconductor OXNAS RPS timers.
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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"
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depends on HAS_IOMEM
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select TIMER_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 SPRD_TIMER
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bool "Spreadtrum timer driver" if EXPERT
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depends on HAS_IOMEM
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depends on (ARCH_SPRD || COMPILE_TEST)
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default ARCH_SPRD
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select TIMER_OF
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help
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Enables support for the Spreadtrum 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 CLKSRC_JCORE_PIT
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bool "J-Core PIT timer driver" if COMPILE_TEST
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depends on 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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This enables build of clocksource and clockevent driver for
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the integrated PIT in the J-Core synthesizable, open source SoC.
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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 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 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 RENESAS_OSTM
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bool "Renesas OSTM timer driver" if COMPILE_TEST
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select CLKSRC_MMIO
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select TIMER_OF
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help
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Enables the support for the Renesas OSTM.
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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 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
|
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 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
|
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
|
select TIMER_OF
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help
|
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" if COMPILE_TEST
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depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
|
select TIMER_OF
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default y if (ARCH_VEXPRESS || ARCH_VERSATILE) && ARM
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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.
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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 CLOCKSOURCE_WATCHDOG
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select TIMER_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
|
select TIMER_OF
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select CLKSRC_MMIO
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help
|
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 HAS_IOMEM
|
select CLKSRC_MMIO
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help
|
This enables OST0 support available on PXA and SA-11x0
|
platforms.
|
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config H8300_TMR8
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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.
|
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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 HAS_IOMEM
|
help
|
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 HAS_IOMEM
|
help
|
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 || ARM64) && CLKDEV_LOOKUP
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imply GENERIC_CLOCKSOURCE_VDSO
|
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config CLKSRC_IMX_TPM
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bool "Clocksource using i.MX TPM" if COMPILE_TEST
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depends on (ARM || ARM64) && CLKDEV_LOOKUP
|
select CLKSRC_MMIO
|
select TIMER_OF
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help
|
Enable this option to use IMX Timer/PWM Module (TPM) timer as
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clocksource.
|
|
config TIMER_IMX_SYS_CTR
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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
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clockevent.
|
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config CLKSRC_ST_LPC
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bool "Low power clocksource found in the LPC" if COMPILE_TEST
|
select TIMER_OF if OF
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depends on HAS_IOMEM
|
imply GENERIC_CLOCKSOURCE_VDSO
|
help
|
Enable this option to use the Low Power controller timer
|
as clocksource.
|
|
config ATCPIT100_TIMER
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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" 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 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 || COMPILE_TEST
|
select CLKSRC_MMIO
|
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.
|
|
endmenu
|
