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