drivers/clocksource/Kconfig

   1 menu "Clock Source drivers"
   2         depends on !ARCH_USES_GETTIMEOFFSET
   3
   4 config TIMER_OF
   5         bool
   6         depends on GENERIC_CLOCKEVENTS
   7         select TIMER_PROBE
   8
   9 config TIMER_ACPI
  10         bool
  11         select TIMER_PROBE
  12
  13 config TIMER_PROBE
  14         bool
  15
  16 config CLKSRC_I8253
  17         bool
  18
  19 config CLKEVT_I8253
  20         bool
  21
  22 config I8253_LOCK
  23         bool
  24
  25 config CLKBLD_I8253
  26         def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
  27
  28 config CLKSRC_MMIO
  29         bool
  30
  31 config BCM2835_TIMER
  32         bool "BCM2835 timer driver" if COMPILE_TEST
  33         depends on GENERIC_CLOCKEVENTS
  34         select CLKSRC_MMIO
  35         help
  36           Enables the support for the BCM2835 timer driver.
  37
  38 config BCM_KONA_TIMER
  39         bool "BCM mobile timer driver" if COMPILE_TEST
  40         depends on GENERIC_CLOCKEVENTS
  41         select CLKSRC_MMIO
  42         help
  43           Enables the support for the BCM Kona mobile timer driver.
  44
  45 config DIGICOLOR_TIMER
  46         bool "Digicolor timer driver" if COMPILE_TEST
  47         depends on GENERIC_CLOCKEVENTS
  48         select CLKSRC_MMIO
  49         depends on HAS_IOMEM
  50         help
  51           Enables the support for the digicolor timer driver.
  52
  53 config DW_APB_TIMER
  54         bool "DW APB timer driver" if COMPILE_TEST
  55         depends on GENERIC_CLOCKEVENTS
  56         help
  57           Enables the support for the dw_apb timer.
  58
  59 config DW_APB_TIMER_OF
  60         bool
  61         select DW_APB_TIMER
  62         select TIMER_OF
  63
  64 config FTTMR010_TIMER
  65         bool "Faraday Technology timer driver" if COMPILE_TEST
  66         depends on GENERIC_CLOCKEVENTS
  67         depends on HAS_IOMEM
  68         select CLKSRC_MMIO
  69         select TIMER_OF
  70         select MFD_SYSCON
  71         help
  72           Enables support for the Faraday Technology timer block
  73           FTTMR010.
  74
  75 config ROCKCHIP_TIMER
  76         bool "Rockchip timer driver" if COMPILE_TEST
  77         depends on ARM || ARM64
  78         select TIMER_OF
  79         select CLKSRC_MMIO
  80         help
  81           Enables the support for the rockchip timer driver.
  82
  83 config ARMADA_370_XP_TIMER
  84         bool "Armada 370 and XP timer driver" if COMPILE_TEST
  85         depends on ARM
  86         select TIMER_OF
  87         select CLKSRC_MMIO
  88         help
  89           Enables the support for the Armada 370 and XP timer driver.
  90
  91 config MESON6_TIMER
  92         bool "Meson6 timer driver" if COMPILE_TEST
  93         depends on GENERIC_CLOCKEVENTS
  94         select CLKSRC_MMIO
  95         help
  96           Enables the support for the Meson6 timer driver.
  97
  98 config ORION_TIMER
  99         bool "Orion timer driver" if COMPILE_TEST
 100         depends on ARM
 101         select TIMER_OF
 102         select CLKSRC_MMIO
 103         help
 104           Enables the support for the Orion timer driver
 105
 106 config OWL_TIMER
 107         bool "Owl timer driver" if COMPILE_TEST
 108         depends on GENERIC_CLOCKEVENTS
 109         select CLKSRC_MMIO
 110         help
 111           Enables the support for the Actions Semi Owl timer driver.
 112
 113 config SUN4I_TIMER
 114         bool "Sun4i timer driver" if COMPILE_TEST
 115         depends on GENERIC_CLOCKEVENTS
 116         depends on HAS_IOMEM
 117         select CLKSRC_MMIO
 118         select TIMER_OF
 119         help
 120           Enables support for the Sun4i timer.
 121
 122 config SUN5I_HSTIMER
 123         bool "Sun5i timer driver" if COMPILE_TEST
 124         select CLKSRC_MMIO
 125         depends on COMMON_CLK
 126         help
 127           Enables support the Sun5i timer.
 128
 129 config TEGRA_TIMER
 130         bool "Tegra timer driver" if COMPILE_TEST
 131         select CLKSRC_MMIO
 132         depends on ARM
 133         help
 134           Enables support for the Tegra driver.
 135
 136 config VT8500_TIMER
 137         bool "VT8500 timer driver" if COMPILE_TEST
 138         depends on GENERIC_CLOCKEVENTS
 139         depends on HAS_IOMEM
 140         help
 141           Enables support for the VT8500 driver.
 142
 143 config CADENCE_TTC_TIMER
 144         bool "Cadence TTC timer driver" if COMPILE_TEST
 145         depends on COMMON_CLK
 146         help
 147           Enables support for the cadence ttc driver.
 148
 149 config ASM9260_TIMER
 150         bool "ASM9260 timer driver" if COMPILE_TEST
 151         depends on GENERIC_CLOCKEVENTS
 152         select CLKSRC_MMIO
 153         select TIMER_OF
 154         help
 155           Enables support for the ASM9260 timer.
 156
 157 config CLKSRC_NOMADIK_MTU
 158         bool "Nomakdik clocksource driver" if COMPILE_TEST
 159         depends on ARM
 160         select CLKSRC_MMIO
 161         help
 162           Support for Multi Timer Unit. MTU provides access
 163           to multiple interrupt generating programmable
 164           32-bit free running decrementing counters.
 165
 166 config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
 167         bool
 168         depends on CLKSRC_NOMADIK_MTU
 169         help
 170           Use the Multi Timer Unit as the sched_clock.
 171
 172 config CLKSRC_DBX500_PRCMU
 173         bool "Clocksource PRCMU Timer" if COMPILE_TEST
 174         depends on GENERIC_CLOCKEVENTS
 175         depends on HAS_IOMEM
 176         help
 177           Use the always on PRCMU Timer as clocksource
 178
 179 config CLPS711X_TIMER
 180         bool "Cirrus logic timer driver" if COMPILE_TEST
 181         depends on GENERIC_CLOCKEVENTS
 182         select CLKSRC_MMIO
 183         help
 184           Enables support for the Cirrus Logic PS711 timer.
 185
 186 config ATLAS7_TIMER
 187         bool "Atlas7 timer driver" if COMPILE_TEST
 188         depends on GENERIC_CLOCKEVENTS
 189         select CLKSRC_MMIO
 190         help
 191           Enables support for the Atlas7 timer.
 192
 193 config MXS_TIMER
 194         bool "Mxs timer driver" if COMPILE_TEST
 195         depends on GENERIC_CLOCKEVENTS
 196         select CLKSRC_MMIO
 197         select STMP_DEVICE
 198         help
 199           Enables support for the Mxs timer.
 200
 201 config PRIMA2_TIMER
 202         bool "Prima2 timer driver" if COMPILE_TEST
 203         depends on GENERIC_CLOCKEVENTS
 204         select CLKSRC_MMIO
 205         help
 206           Enables support for the Prima2 timer.
 207
 208 config U300_TIMER
 209         bool "U300 timer driver" if COMPILE_TEST
 210         depends on GENERIC_CLOCKEVENTS
 211         depends on ARM
 212         select CLKSRC_MMIO
 213         help
 214           Enables support for the U300 timer.
 215
 216 config NSPIRE_TIMER
 217         bool "NSpire timer driver" if COMPILE_TEST
 218         depends on GENERIC_CLOCKEVENTS
 219         select CLKSRC_MMIO
 220         help
 221           Enables support for the Nspire timer.
 222
 223 config KEYSTONE_TIMER
 224         bool "Keystone timer driver" if COMPILE_TEST
 225         depends on GENERIC_CLOCKEVENTS
 226         depends on ARM || ARM64
 227         select CLKSRC_MMIO
 228         help
 229           Enables support for the Keystone timer.
 230
 231 config INTEGRATOR_AP_TIMER
 232         bool "Integrator-ap timer driver" if COMPILE_TEST
 233         depends on GENERIC_CLOCKEVENTS
 234         select CLKSRC_MMIO
 235         help
 236           Enables support for the Integrator-ap timer.
 237
 238 config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
 239         bool "Clocksource PRCMU Timer sched_clock"
 240         depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
 241         default y
 242         help
 243           Use the always on PRCMU Timer as sched_clock
 244
 245 config CLKSRC_EFM32
 246         bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
 247         depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
 248         select CLKSRC_MMIO
 249         default ARCH_EFM32
 250         help
 251           Support to use the timers of EFM32 SoCs as clock source and clock
 252           event device.
 253
 254 config CLKSRC_LPC32XX
 255         bool "Clocksource for LPC32XX" if COMPILE_TEST
 256         depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
 257         depends on ARM
 258         select CLKSRC_MMIO
 259         select TIMER_OF
 260         help
 261           Support for the LPC32XX clocksource.
 262
 263 config CLKSRC_PISTACHIO
 264         bool "Clocksource for Pistachio SoC" if COMPILE_TEST
 265         depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
 266         select TIMER_OF
 267         help
 268           Enables the clocksource for the Pistachio SoC.
 269
 270 config CLKSRC_TI_32K
 271         bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
 272         depends on GENERIC_SCHED_CLOCK
 273         select TIMER_OF if OF
 274         help
 275           This option enables support for Texas Instruments 32.768 Hz clocksource
 276           available on many OMAP-like platforms.
 277
 278 config CLKSRC_NPS
 279         bool "NPS400 clocksource driver" if COMPILE_TEST
 280         depends on !PHYS_ADDR_T_64BIT
 281         select CLKSRC_MMIO
 282         select TIMER_OF if OF
 283         help
 284           NPS400 clocksource support.
 285           Got 64 bit counter with update rate up to 1000MHz.
 286           This counter is accessed via couple of 32 bit memory mapped registers.
 287
 288 config CLKSRC_STM32
 289         bool "Clocksource for STM32 SoCs" if !ARCH_STM32
 290         depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
 291         select CLKSRC_MMIO
 292
 293 config CLKSRC_MPS2
 294         bool "Clocksource for MPS2 SoCs" if COMPILE_TEST
 295         depends on GENERIC_SCHED_CLOCK
 296         select CLKSRC_MMIO
 297         select TIMER_OF
 298
 299 config ARC_TIMERS
 300         bool "Support for 32-bit TIMERn counters in ARC Cores" if COMPILE_TEST
 301         depends on GENERIC_CLOCKEVENTS
 302         select TIMER_OF
 303         help
 304           These are legacy 32-bit TIMER0 and TIMER1 counters found on all ARC cores
 305           (ARC700 as well as ARC HS38).
 306           TIMER0 serves as clockevent while TIMER1 provides clocksource
 307
 308 config ARC_TIMERS_64BIT
 309         bool "Support for 64-bit counters in ARC HS38 cores" if COMPILE_TEST
 310         depends on GENERIC_CLOCKEVENTS
 311         depends on ARC_TIMERS
 312         select TIMER_OF
 313         help
 314           This enables 2 different 64-bit timers: RTC (for UP) and GFRC (for SMP)
 315           RTC is implemented inside the core, while GFRC sits outside the core in
 316           ARConnect IP block. Driver automatically picks one of them for clocksource
 317           as appropriate.
 318
 319 config ARM_ARCH_TIMER
 320         bool
 321         select TIMER_OF if OF
 322         select TIMER_ACPI if ACPI
 323
 324 config ARM_ARCH_TIMER_EVTSTREAM
 325         bool "Enable ARM architected timer event stream generation by default"
 326         default y if ARM_ARCH_TIMER
 327         depends on ARM_ARCH_TIMER
 328         help
 329           This option enables support by default for event stream generation
 330           based on the ARM architected timer. It is used for waking up CPUs
 331           executing the wfe instruction at a frequency represented as a
 332           power-of-2 divisor of the clock rate. The behaviour can also be
 333           overridden on the command line using the
 334           clocksource.arm_arch_timer.evtstream parameter.
 335           The main use of the event stream is wfe-based timeouts of userspace
 336           locking implementations. It might also be useful for imposing timeout
 337           on wfe to safeguard against any programming errors in case an expected
 338           event is not generated.
 339           This must be disabled for hardware validation purposes to detect any
 340           hardware anomalies of missing events.
 341
 342 config ARM_ARCH_TIMER_OOL_WORKAROUND
 343         bool
 344
 345 config FSL_ERRATUM_A008585
 346         bool "Workaround for Freescale/NXP Erratum A-008585"
 347         default y
 348         depends on ARM_ARCH_TIMER && ARM64
 349         select ARM_ARCH_TIMER_OOL_WORKAROUND
 350         help
 351           This option enables a workaround for Freescale/NXP Erratum
 352           A-008585 ("ARM generic timer may contain an erroneous
 353           value").  The workaround will only be active if the
 354           fsl,erratum-a008585 property is found in the timer node.
 355
 356 config HISILICON_ERRATUM_161010101
 357         bool "Workaround for Hisilicon Erratum 161010101"
 358         default y
 359         select ARM_ARCH_TIMER_OOL_WORKAROUND
 360         depends on ARM_ARCH_TIMER && ARM64
 361         help
 362           This option enables a workaround for Hisilicon Erratum
 363           161010101. The workaround will be active if the hisilicon,erratum-161010101
 364           property is found in the timer node.
 365
 366 config ARM64_ERRATUM_858921
 367         bool "Workaround for Cortex-A73 erratum 858921"
 368         default y
 369         select ARM_ARCH_TIMER_OOL_WORKAROUND
 370         depends on ARM_ARCH_TIMER && ARM64
 371         help
 372           This option enables a workaround applicable to Cortex-A73
 373           (all versions), whose counter may return incorrect values.
 374           The workaround will be dynamically enabled when an affected
 375           core is detected.
 376
 377 config ARM_GLOBAL_TIMER
 378         bool "Support for the ARM global timer" if COMPILE_TEST
 379         select TIMER_OF if OF
 380         depends on ARM
 381         help
 382           This options enables support for the ARM global timer unit
 383
 384 config ARM_TIMER_SP804
 385         bool "Support for Dual Timer SP804 module"
 386         depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
 387         select CLKSRC_MMIO
 388         select TIMER_OF if OF
 389
 390 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
 391         bool
 392         depends on ARM_GLOBAL_TIMER
 393         default y
 394         help
 395          Use ARM global timer clock source as sched_clock
 396
 397 config ARMV7M_SYSTICK
 398         bool "Support for the ARMv7M system time" if COMPILE_TEST
 399         select TIMER_OF if OF
 400         select CLKSRC_MMIO
 401         help
 402           This options enables support for the ARMv7M system timer unit
 403
 404 config ATMEL_PIT
 405         select TIMER_OF if OF
 406         def_bool SOC_AT91SAM9 || SOC_SAMA5
 407
 408 config ATMEL_ST
 409         bool "Atmel ST timer support" if COMPILE_TEST
 410         depends on GENERIC_CLOCKEVENTS
 411         select TIMER_OF
 412         select MFD_SYSCON
 413         help
 414           Support for the Atmel ST timer.
 415
 416 config CLKSRC_METAG_GENERIC
 417         def_bool y if METAG
 418         help
 419           This option enables support for the Meta per-thread timers.
 420
 421 config CLKSRC_EXYNOS_MCT
 422         bool "Exynos multi core timer driver" if COMPILE_TEST
 423         depends on ARM || ARM64
 424         help
 425           Support for Multi Core Timer controller on Exynos SoCs.
 426
 427 config CLKSRC_SAMSUNG_PWM
 428         bool "PWM timer driver for Samsung S3C, S5P" if COMPILE_TEST
 429         depends on GENERIC_CLOCKEVENTS
 430         depends on HAS_IOMEM
 431         help
 432           This is a new clocksource driver for the PWM timer found in
 433           Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
 434           for all devicetree enabled platforms. This driver will be
 435           needed only on systems that do not have the Exynos MCT available.
 436
 437 config FSL_FTM_TIMER
 438         bool "Freescale FlexTimer Module driver" if COMPILE_TEST
 439         depends on GENERIC_CLOCKEVENTS
 440         depends on HAS_IOMEM
 441         select CLKSRC_MMIO
 442         help
 443           Support for Freescale FlexTimer Module (FTM) timer.
 444
 445 config VF_PIT_TIMER
 446         bool
 447         select CLKSRC_MMIO
 448         help
 449           Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
 450
 451 config OXNAS_RPS_TIMER
 452         bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST
 453         depends on GENERIC_CLOCKEVENTS
 454         select TIMER_OF
 455         select CLKSRC_MMIO
 456         help
 457           This enables support for the Oxford Semiconductor OXNAS RPS timers.
 458
 459 config SYS_SUPPORTS_SH_CMT
 460         bool
 461
 462 config MTK_TIMER
 463         bool "Mediatek timer driver" if COMPILE_TEST
 464         depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
 465         select TIMER_OF
 466         select CLKSRC_MMIO
 467         help
 468           Support for Mediatek timer driver.
 469
 470 config SYS_SUPPORTS_SH_MTU2
 471         bool
 472
 473 config SYS_SUPPORTS_SH_TMU
 474         bool
 475
 476 config SYS_SUPPORTS_EM_STI
 477         bool
 478
 479 config CLKSRC_JCORE_PIT
 480         bool "J-Core PIT timer driver" if COMPILE_TEST
 481         depends on OF
 482         depends on GENERIC_CLOCKEVENTS
 483         depends on HAS_IOMEM
 484         select CLKSRC_MMIO
 485         help
 486           This enables build of clocksource and clockevent driver for
 487           the integrated PIT in the J-Core synthesizable, open source SoC.
 488
 489 config SH_TIMER_CMT
 490         bool "Renesas CMT timer driver" if COMPILE_TEST
 491         depends on GENERIC_CLOCKEVENTS
 492         depends on HAS_IOMEM
 493         default SYS_SUPPORTS_SH_CMT
 494         help
 495           This enables build of a clocksource and clockevent driver for
 496           the Compare Match Timer (CMT) hardware available in 16/32/48-bit
 497           variants on a wide range of Mobile and Automotive SoCs from Renesas.
 498
 499 config SH_TIMER_MTU2
 500         bool "Renesas MTU2 timer driver" if COMPILE_TEST
 501         depends on GENERIC_CLOCKEVENTS
 502         depends on HAS_IOMEM
 503         default SYS_SUPPORTS_SH_MTU2
 504         help
 505           This enables build of a clockevent driver for the Multi-Function
 506           Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
 507           This hardware comes with 16 bit-timer registers.
 508
 509 config RENESAS_OSTM
 510         bool "Renesas OSTM timer driver" if COMPILE_TEST
 511         depends on GENERIC_CLOCKEVENTS
 512         select CLKSRC_MMIO
 513         help
 514           Enables the support for the Renesas OSTM.
 515
 516 config SH_TIMER_TMU
 517         bool "Renesas TMU timer driver" if COMPILE_TEST
 518         depends on GENERIC_CLOCKEVENTS
 519         depends on HAS_IOMEM
 520         default SYS_SUPPORTS_SH_TMU
 521         help
 522           This enables build of a clocksource and clockevent driver for
 523           the 32-bit Timer Unit (TMU) hardware available on a wide range
 524           SoCs from Renesas.
 525
 526 config EM_TIMER_STI
 527         bool "Renesas STI timer driver" if COMPILE_TEST
 528         depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
 529         default SYS_SUPPORTS_EM_STI
 530         help
 531           This enables build of a clocksource and clockevent driver for
 532           the 48-bit System Timer (STI) hardware available on a SoCs
 533           such as EMEV2 from former NEC Electronics.
 534
 535 config CLKSRC_QCOM
 536         bool "Qualcomm MSM timer" if COMPILE_TEST
 537         depends on ARM
 538         select TIMER_OF
 539         help
 540           This enables the clocksource and the per CPU clockevent driver for the
 541           Qualcomm SoCs.
 542
 543 config CLKSRC_VERSATILE
 544         bool "ARM Versatile (Express) reference platforms clock source" if COMPILE_TEST
 545         depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
 546         select TIMER_OF
 547         default y if MFD_VEXPRESS_SYSREG
 548         help
 549           This option enables clock source based on free running
 550           counter available in the "System Registers" block of
 551           ARM Versatile, RealView and Versatile Express reference
 552           platforms.
 553
 554 config CLKSRC_MIPS_GIC
 555         bool
 556         depends on MIPS_GIC
 557         select TIMER_OF
 558
 559 config CLKSRC_TANGO_XTAL
 560         bool "Clocksource for Tango SoC" if COMPILE_TEST
 561         depends on ARM
 562         select TIMER_OF
 563         select CLKSRC_MMIO
 564         help
 565           This enables the clocksource for Tango SoC
 566
 567 config CLKSRC_PXA
 568         bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST
 569         depends on GENERIC_CLOCKEVENTS
 570         depends on HAS_IOMEM
 571         select CLKSRC_MMIO
 572         help
 573           This enables OST0 support available on PXA and SA-11x0
 574           platforms.
 575
 576 config H8300_TMR8
 577         bool "Clockevent timer for the H8300 platform" if COMPILE_TEST
 578         depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
 579         help
 580           This enables the 8 bits timer for the H8300 platform.
 581
 582 config H8300_TMR16
 583         bool "Clockevent timer for the H83069 platform" if COMPILE_TEST
 584         depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
 585         help
 586           This enables the 16 bits timer for the H8300 platform with the
 587           H83069 cpu.
 588
 589 config H8300_TPU
 590         bool "Clocksource for the H8300 platform" if COMPILE_TEST
 591         depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
 592         help
 593           This enables the clocksource for the H8300 platform with the
 594           H8S2678 cpu.
 595
 596 config CLKSRC_IMX_GPT
 597         bool "Clocksource using i.MX GPT" if COMPILE_TEST
 598         depends on ARM && CLKDEV_LOOKUP
 599         select CLKSRC_MMIO
 600
 601 config CLKSRC_IMX_TPM
 602         bool "Clocksource using i.MX TPM" if COMPILE_TEST
 603         depends on ARM && CLKDEV_LOOKUP && GENERIC_CLOCKEVENTS
 604         select CLKSRC_MMIO
 605         help
 606           Enable this option to use IMX Timer/PWM Module (TPM) timer as
 607           clocksource.
 608
 609 config CLKSRC_ST_LPC
 610         bool "Low power clocksource found in the LPC" if COMPILE_TEST
 611         select TIMER_OF if OF
 612         depends on HAS_IOMEM
 613         select CLKSRC_MMIO
 614         help
 615           Enable this option to use the Low Power controller timer
 616           as clocksource.
 617
 618 endmenu