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