1menu "Clock Source drivers" 2 depends on !ARCH_USES_GETTIMEOFFSET 3 4config TIMER_OF 5 bool 6 depends on GENERIC_CLOCKEVENTS 7 select TIMER_PROBE 8 9config TIMER_ACPI 10 bool 11 select TIMER_PROBE 12 13config TIMER_PROBE 14 bool 15 16config CLKSRC_I8253 17 bool 18 19config CLKEVT_I8253 20 bool 21 22config I8253_LOCK 23 bool 24 25config CLKBLD_I8253 26 def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK 27 28config CLKSRC_MMIO 29 bool 30 31config 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 38config 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 45config 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 53config 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 59config DW_APB_TIMER_OF 60 bool 61 select DW_APB_TIMER 62 select TIMER_OF 63 64config 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 75config 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 83config 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 91config 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 98config 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 106config 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 113config 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 122config 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 129config 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 136config 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 143config 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 149config 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 157config 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 166config 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 172config 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 179config 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 186config 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 193config 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 201config 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 208config 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 216config 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 223config 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 231config 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 238config 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 245config 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 254config 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 263config 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 270config 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 278config 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 288config 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 293config 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 299config 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 308config 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 319config ARM_ARCH_TIMER 320 bool 321 select TIMER_OF if OF 322 select TIMER_ACPI if ACPI 323 324config 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 342config ARM_ARCH_TIMER_OOL_WORKAROUND 343 bool 344 345config 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 356config 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 366config 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 377config 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 384config 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 390config 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 397config 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 404config ATMEL_PIT 405 select TIMER_OF if OF 406 def_bool SOC_AT91SAM9 || SOC_SAMA5 407 408config 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 416config CLKSRC_METAG_GENERIC 417 def_bool y if METAG 418 help 419 This option enables support for the Meta per-thread timers. 420 421config 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 427config 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 437config 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 445config VF_PIT_TIMER 446 bool 447 select CLKSRC_MMIO 448 help 449 Support for Period Interrupt Timer on Freescale Vybrid Family SoCs. 450 451config 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 459config SYS_SUPPORTS_SH_CMT 460 bool 461 462config 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 470config SYS_SUPPORTS_SH_MTU2 471 bool 472 473config SYS_SUPPORTS_SH_TMU 474 bool 475 476config SYS_SUPPORTS_EM_STI 477 bool 478 479config 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 489config 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 499config 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 509config 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 516config 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 526config 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 535config 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 543config 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 554config CLKSRC_MIPS_GIC 555 bool 556 depends on MIPS_GIC 557 select TIMER_OF 558 559config 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 567config 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 576config 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 582config 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 589config 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 596config CLKSRC_IMX_GPT 597 bool "Clocksource using i.MX GPT" if COMPILE_TEST 598 depends on ARM && CLKDEV_LOOKUP 599 select CLKSRC_MMIO 600 601config 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 609config 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 618endmenu 619