62b0194368
The RISC-V ISA defines a per-hart real-time clock and timer, which is present on all systems. The clock is accessed via the 'rdtime' pseudo-instruction (which reads a CSR), and the timer is set via an SBI call. Contains various improvements from Atish Patra <atish.patra@wdc.com>. Signed-off-by: Dmitriy Cherkasov <dmitriy@oss-tech.org> Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com> [hch: remove dead code, add SPDX tags, used riscv_of_processor_hart(), minor cleanups, merged hotplug cpu support and other improvements from Atish] Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Atish Patra <atish.patra@wdc.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
623 lines
16 KiB
Text
623 lines
16 KiB
Text
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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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 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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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 ROCKCHIP_TIMER
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bool "Rockchip timer driver" if 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 SUN4I_TIMER
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bool "Sun4i 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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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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depends on ARM
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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 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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While 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_NOMADIK_MTU_SCHED_CLOCK
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bool
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depends on CLKSRC_NOMADIK_MTU
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help
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Use the Multi Timer Unit as the sched_clock.
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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_DBX500_PRCMU_SCHED_CLOCK
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bool "Clocksource PRCMU Timer sched_clock"
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depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
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default y
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help
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Use the always on PRCMU Timer as sched_clock
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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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Got 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_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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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 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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depends on ARM
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help
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This options 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"
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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 options enables support for the ARMv7M system timer unit
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config ATMEL_PIT
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select TIMER_OF if OF
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def_bool SOC_AT91SAM9 || SOC_SAMA5
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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 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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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 Period 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" 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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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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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
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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
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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.
|
|
|
|
endmenu
|