drivers/clocksource/Kconfig

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