tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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kernel / drivers / clocksource / Kconfig
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1# SPDX-License-Identifier: GPL-2.0-only 2menu "Clock Source drivers" 3 depends on GENERIC_CLOCKEVENTS 4 5config TIMER_OF 6 bool 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 OMAP_DM_SYSTIMER 26 bool 27 select TIMER_OF 28 29config CLKBLD_I8253 30 def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK 31 32config CLKSRC_MMIO 33 bool 34 35config BCM2835_TIMER 36 bool "BCM2835 timer driver" if COMPILE_TEST 37 select CLKSRC_MMIO 38 help 39 Enables the support for the BCM2835 timer driver. 40 41config BCM_KONA_TIMER 42 bool "BCM mobile timer driver" if COMPILE_TEST 43 select CLKSRC_MMIO 44 help 45 Enables the support for the BCM Kona mobile timer driver. 46 47config DAVINCI_TIMER 48 bool "Texas Instruments DaVinci timer driver" if COMPILE_TEST 49 help 50 Enables the support for the TI DaVinci timer driver. 51 52config DIGICOLOR_TIMER 53 bool "Digicolor timer driver" if COMPILE_TEST 54 select CLKSRC_MMIO 55 depends on HAS_IOMEM 56 help 57 Enables the support for the digicolor timer driver. 58 59config OMAP_DM_TIMER 60 bool "OMAP dual-mode timer driver" if ARCH_K3 || COMPILE_TEST 61 default y if ARCH_K3 62 select TIMER_OF 63 help 64 Enables the support for the TI dual-mode timer driver. 65 66config DW_APB_TIMER 67 bool "DW APB timer driver" if COMPILE_TEST 68 help 69 Enables the support for the dw_apb timer. 70 71config DW_APB_TIMER_OF 72 bool 73 select DW_APB_TIMER 74 select TIMER_OF 75 76config ECONET_EN751221_TIMER 77 bool "EcoNet EN751221 High Precision Timer" if COMPILE_TEST 78 depends on HAS_IOMEM 79 select CLKSRC_MMIO 80 select TIMER_OF 81 help 82 Support for CPU timer found on EcoNet MIPS based SoCs. 83 84config FTTMR010_TIMER 85 bool "Faraday Technology timer driver" if COMPILE_TEST 86 depends on HAS_IOMEM 87 select CLKSRC_MMIO 88 select TIMER_OF 89 select MFD_SYSCON 90 help 91 Enables support for the Faraday Technology timer block 92 FTTMR010. 93 94config IXP4XX_TIMER 95 bool "Intel XScale IXP4xx timer driver" if COMPILE_TEST 96 depends on HAS_IOMEM 97 select CLKSRC_MMIO 98 select TIMER_OF 99 help 100 Enables support for the Intel XScale IXP4xx SoC timer. 101 102config ROCKCHIP_TIMER 103 bool "Rockchip timer driver" if COMPILE_TEST 104 depends on ARM || ARM64 105 select TIMER_OF 106 select CLKSRC_MMIO 107 help 108 Enables the support for the Rockchip timer driver. 109 110config ARMADA_370_XP_TIMER 111 bool "Armada 370 and XP timer driver" if COMPILE_TEST 112 depends on ARM 113 select TIMER_OF 114 select CLKSRC_MMIO 115 help 116 Enables the support for the Armada 370 and XP timer driver. 117 118config MESON6_TIMER 119 bool "Meson6 timer driver" if COMPILE_TEST 120 select CLKSRC_MMIO 121 help 122 Enables the support for the Meson6 timer driver. 123 124config ORION_TIMER 125 bool "Orion timer driver" if COMPILE_TEST 126 depends on ARM 127 select TIMER_OF 128 select CLKSRC_MMIO 129 help 130 Enables the support for the Orion timer driver 131 132config OWL_TIMER 133 bool "Owl timer driver" if COMPILE_TEST 134 select CLKSRC_MMIO 135 help 136 Enables the support for the Actions Semi Owl timer driver. 137 138config RDA_TIMER 139 bool "RDA timer driver" if COMPILE_TEST 140 select CLKSRC_MMIO 141 select TIMER_OF 142 help 143 Enables the support for the RDA Micro timer driver. 144 145config REALTEK_OTTO_TIMER 146 bool "Clocksource/timer for the Realtek Otto platform" if COMPILE_TEST 147 select TIMER_OF 148 help 149 This driver adds support for the timers found in the Realtek RTL83xx 150 and RTL93xx SoCs series. This includes chips such as RTL8380, RTL8381 151 and RTL832, as well as chips from the RTL839x series, such as RTL8390 152 RT8391, RTL8392, RTL8393 and RTL8396 and chips of the RTL930x series 153 such as RTL9301, RTL9302 or RTL9303. 154 155config SUN4I_TIMER 156 bool "Sun4i timer driver" if COMPILE_TEST 157 depends on HAS_IOMEM 158 select CLKSRC_MMIO 159 select TIMER_OF 160 help 161 Enables support for the Sun4i timer. 162 163config SUN5I_HSTIMER 164 bool "Sun5i timer driver" if COMPILE_TEST 165 select CLKSRC_MMIO 166 depends on COMMON_CLK 167 help 168 Enables support the Sun5i timer. 169 170config TEGRA_TIMER 171 bool "Tegra timer driver" if COMPILE_TEST 172 select CLKSRC_MMIO 173 select TIMER_OF 174 depends on ARCH_TEGRA || COMPILE_TEST 175 help 176 Enables support for the Tegra driver. 177 178config TEGRA186_TIMER 179 bool "NVIDIA Tegra186 timer driver" 180 depends on ARCH_TEGRA || COMPILE_TEST 181 depends on WATCHDOG && WATCHDOG_CORE 182 help 183 Enables support for the timers and watchdogs found on NVIDIA 184 Tegra186 and later SoCs. 185 186config VT8500_TIMER 187 bool "VT8500 timer driver" if COMPILE_TEST 188 depends on HAS_IOMEM 189 help 190 Enables support for the VT8500 driver. 191 192config NPCM7XX_TIMER 193 bool "NPCM7xx timer driver" if COMPILE_TEST 194 depends on HAS_IOMEM 195 select TIMER_OF 196 select CLKSRC_MMIO 197 help 198 Enable 24-bit TIMER0 and TIMER1 counters in the NPCM7xx architecture, 199 where TIMER0 serves as clockevent and TIMER1 serves as clocksource. 200 201config CADENCE_TTC_TIMER 202 bool "Cadence TTC timer driver" if COMPILE_TEST 203 depends on COMMON_CLK 204 help 205 Enables support for the Cadence TTC driver. 206 207config ASM9260_TIMER 208 bool "ASM9260 timer driver" if COMPILE_TEST 209 select CLKSRC_MMIO 210 select TIMER_OF 211 help 212 Enables support for the ASM9260 timer. 213 214config CLKSRC_NOMADIK_MTU 215 bool "Nomakdik clocksource driver" if COMPILE_TEST 216 depends on ARM 217 select CLKSRC_MMIO 218 help 219 Support for Multi Timer Unit. MTU provides access 220 to multiple interrupt generating programmable 221 32-bit free running decrementing counters. 222 223config CLKSRC_DBX500_PRCMU 224 bool "Clocksource PRCMU Timer" if COMPILE_TEST 225 depends on HAS_IOMEM 226 help 227 Use the always on PRCMU Timer as clocksource. 228 229config CLPS711X_TIMER 230 bool "Cirrus Logic timer driver" if COMPILE_TEST 231 select CLKSRC_MMIO 232 help 233 Enables support for the Cirrus Logic PS711 timer. 234 235config MXS_TIMER 236 bool "MXS timer driver" if COMPILE_TEST 237 select CLKSRC_MMIO 238 select STMP_DEVICE 239 help 240 Enables support for the MXS timer. 241 242config NSPIRE_TIMER 243 bool "NSpire timer driver" if COMPILE_TEST 244 select CLKSRC_MMIO 245 help 246 Enables support for the Nspire timer. 247 248config KEYSTONE_TIMER 249 bool "Keystone timer driver" if COMPILE_TEST 250 depends on ARM || ARM64 251 select CLKSRC_MMIO 252 help 253 Enables support for the Keystone timer. 254 255config INTEGRATOR_AP_TIMER 256 bool "Integrator-AP timer driver" if COMPILE_TEST 257 select CLKSRC_MMIO 258 help 259 Enables support for the Integrator-AP timer. 260 261config CLKSRC_LPC32XX 262 bool "Clocksource for LPC32XX" if COMPILE_TEST 263 depends on HAS_IOMEM 264 depends on ARM 265 select CLKSRC_MMIO 266 select TIMER_OF 267 help 268 Support for the LPC32XX clocksource. 269 270config CLKSRC_PISTACHIO 271 bool "Clocksource for Pistachio SoC" 272 depends on HAS_IOMEM 273 depends on MIPS || COMPILE_TEST 274 select TIMER_OF 275 help 276 Enables the clocksource for the Pistachio SoC. 277 278config CLKSRC_TI_32K 279 bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST 280 depends on GENERIC_SCHED_CLOCK 281 select TIMER_OF if OF 282 help 283 This option enables support for Texas Instruments 32.768 Hz clocksource 284 available on many OMAP-like platforms. 285 286config CLKSRC_STM32 287 bool "Clocksource for STM32 SoCs" if !ARCH_STM32 288 depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST) 289 select CLKSRC_MMIO 290 select TIMER_OF 291 292config CLKSRC_STM32_LP 293 bool "Low power clocksource for STM32 SoCs" 294 depends on MFD_STM32_LPTIMER || COMPILE_TEST 295 296config CLKSRC_MPS2 297 bool "Clocksource for MPS2 SoCs" if COMPILE_TEST 298 depends on GENERIC_SCHED_CLOCK 299 select CLKSRC_MMIO 300 select TIMER_OF 301 302config ARC_TIMERS 303 bool "Support for 32-bit TIMERn counters in ARC Cores" if COMPILE_TEST 304 depends on GENERIC_SCHED_CLOCK 305 select TIMER_OF 306 help 307 These are legacy 32-bit TIMER0 and TIMER1 counters found on all ARC cores 308 (ARC700 as well as ARC HS38). 309 TIMER0 serves as clockevent while TIMER1 provides clocksource. 310 311config ARC_TIMERS_64BIT 312 bool "Support for 64-bit counters in ARC HS38 cores" if COMPILE_TEST 313 depends on ARC_TIMERS 314 select TIMER_OF 315 help 316 This enables 2 different 64-bit timers: RTC (for UP) and GFRC (for SMP). 317 RTC is implemented inside the core, while GFRC sits outside the core in 318 ARConnect IP block. Driver automatically picks one of them for clocksource 319 as appropriate. 320 321config ARM_ARCH_TIMER 322 bool 323 select TIMER_OF if OF 324 select TIMER_ACPI if ACPI 325 326config ARM_ARCH_TIMER_EVTSTREAM 327 bool "Enable ARM architected timer event stream generation by default" 328 default y if ARM_ARCH_TIMER 329 depends on ARM_ARCH_TIMER 330 help 331 This option enables support by default for event stream generation 332 based on the ARM architected timer. It is used for waking up CPUs 333 executing the wfe instruction at a frequency represented as a 334 power-of-2 divisor of the clock rate. The behaviour can also be 335 overridden on the command line using the 336 clocksource.arm_arch_timer.evtstream parameter. 337 The main use of the event stream is wfe-based timeouts of userspace 338 locking implementations. It might also be useful for imposing timeout 339 on wfe to safeguard against any programming errors in case an expected 340 event is not generated. 341 This must be disabled for hardware validation purposes to detect any 342 hardware anomalies of missing events. 343 344config ARM_ARCH_TIMER_OOL_WORKAROUND 345 bool 346 347config FSL_ERRATUM_A008585 348 bool "Workaround for Freescale/NXP Erratum A-008585" 349 default y 350 depends on ARM_ARCH_TIMER && ARM64 351 select ARM_ARCH_TIMER_OOL_WORKAROUND 352 help 353 This option enables a workaround for Freescale/NXP Erratum 354 A-008585 ("ARM generic timer may contain an erroneous 355 value"). The workaround will only be active if the 356 fsl,erratum-a008585 property is found in the timer node. 357 358config HISILICON_ERRATUM_161010101 359 bool "Workaround for Hisilicon Erratum 161010101" 360 default y 361 select ARM_ARCH_TIMER_OOL_WORKAROUND 362 depends on ARM_ARCH_TIMER && ARM64 363 help 364 This option enables a workaround for Hisilicon Erratum 365 161010101. The workaround will be active if the hisilicon,erratum-161010101 366 property is found in the timer node. 367 368config ARM64_ERRATUM_858921 369 bool "Workaround for Cortex-A73 erratum 858921" 370 default y 371 select ARM_ARCH_TIMER_OOL_WORKAROUND 372 depends on ARM_ARCH_TIMER && ARM64 373 help 374 This option enables a workaround applicable to Cortex-A73 375 (all versions), whose counter may return incorrect values. 376 The workaround will be dynamically enabled when an affected 377 core is detected. 378 379config SUN50I_ERRATUM_UNKNOWN1 380 bool "Workaround for Allwinner A64 erratum UNKNOWN1" 381 default y 382 depends on ARM_ARCH_TIMER && ARM64 && ARCH_SUNXI 383 select ARM_ARCH_TIMER_OOL_WORKAROUND 384 help 385 This option enables a workaround for instability in the timer on 386 the Allwinner A64 SoC. The workaround will only be active if the 387 allwinner,erratum-unknown1 property is found in the timer node. 388 389config ARM_GLOBAL_TIMER 390 bool "Support for the ARM global timer" if COMPILE_TEST 391 select TIMER_OF if OF 392 depends on ARM 393 help 394 This option enables support for the ARM global timer unit. 395 396config ARM_GT_INITIAL_PRESCALER_VAL 397 int "ARM global timer initial prescaler value" 398 default 0 399 depends on ARM_GLOBAL_TIMER 400 help 401 When the ARM global timer initializes, its current rate is declared 402 to the kernel and maintained forever. Should its parent clock 403 change, the driver tries to fix the timer's internal prescaler. 404 On some machs (i.e. Zynq) the initial prescaler value thus poses 405 bounds about how much the parent clock is allowed to decrease or 406 increase wrt the initial clock value. 407 This affects CPU_FREQ max delta from the initial frequency. 408 Use 0 to use auto-detection in the driver. 409 410config ARM_TIMER_SP804 411 bool "Support for Dual Timer SP804 module" 412 depends on ARM || ARM64 || COMPILE_TEST 413 depends on GENERIC_SCHED_CLOCK && HAVE_CLK 414 select CLKSRC_MMIO 415 select TIMER_OF if OF 416 417config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK 418 bool 419 depends on ARM_GLOBAL_TIMER 420 default y 421 help 422 Use ARM global timer clock source as sched_clock. 423 424config ARMV7M_SYSTICK 425 bool "Support for the ARMv7M system time" if COMPILE_TEST 426 select TIMER_OF if OF 427 select CLKSRC_MMIO 428 help 429 This option enables support for the ARMv7M system timer unit. 430 431config ATMEL_PIT 432 bool "Atmel PIT support" if COMPILE_TEST 433 depends on HAS_IOMEM 434 select TIMER_OF if OF 435 help 436 Support for the Periodic Interval Timer found on Atmel SoCs. 437 438config ATMEL_ST 439 bool "Atmel ST timer support" if COMPILE_TEST 440 depends on HAS_IOMEM 441 select TIMER_OF 442 select MFD_SYSCON 443 help 444 Support for the Atmel ST timer. 445 446config ATMEL_TCB_CLKSRC 447 bool "Atmel TC Block timer driver" if COMPILE_TEST 448 depends on ARM && OF && HAS_IOMEM 449 select TIMER_OF 450 help 451 Support for Timer Counter Blocks on Atmel SoCs. 452 453config CLKSRC_EXYNOS_MCT 454 bool "Exynos multi core timer driver" if COMPILE_TEST 455 depends on ARM || ARM64 456 depends on ARCH_ARTPEC || ARCH_EXYNOS || COMPILE_TEST 457 help 458 Support for Multi Core Timer controller on Exynos SoCs. 459 460config CLKSRC_SAMSUNG_PWM 461 bool "PWM timer driver for Samsung S3C, S5P" if COMPILE_TEST 462 depends on HAS_IOMEM 463 depends on ARCH_EXYNOS || ARCH_S3C64XX || ARCH_S5PV210 || COMPILE_TEST 464 help 465 This is a new clocksource driver for the PWM timer found in 466 Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver 467 for all devicetree enabled platforms. This driver will be 468 needed only on systems that do not have the Exynos MCT available. 469 470config FSL_FTM_TIMER 471 bool "Freescale FlexTimer Module driver" if COMPILE_TEST 472 depends on HAS_IOMEM 473 select CLKSRC_MMIO 474 help 475 Support for Freescale FlexTimer Module (FTM) timer. 476 477config NXP_PIT_TIMER 478 bool "NXP Periodic Interrupt Timer" if COMPILE_TEST 479 select CLKSRC_MMIO 480 help 481 Support for Periodic Interrupt Timer on Freescale / NXP 482 SoCs. This periodic timer is found on the Vybrid Family and 483 the Automotive S32G2/3 platforms. It contains 4 channels 484 where two can be coupled to form a 64 bits channel. 485 486config SYS_SUPPORTS_SH_CMT 487 bool 488 489config MTK_TIMER 490 bool "Mediatek timer driver" if COMPILE_TEST 491 depends on HAS_IOMEM 492 select TIMER_OF 493 select CLKSRC_MMIO 494 help 495 Support for Mediatek timer driver. 496 497config MTK_CPUX_TIMER 498 bool "MediaTek CPUX timer driver" if COMPILE_TEST 499 depends on HAS_IOMEM 500 default ARCH_MEDIATEK 501 select TIMER_OF 502 select CLKSRC_MMIO 503 help 504 Support for MediaTek CPUXGPT timer driver. 505 506config SPRD_TIMER 507 bool "Spreadtrum timer driver" if EXPERT 508 depends on HAS_IOMEM 509 depends on (ARCH_SPRD || COMPILE_TEST) 510 default ARCH_SPRD 511 select TIMER_OF 512 help 513 Enables support for the Spreadtrum timer driver. 514 515config SYS_SUPPORTS_SH_MTU2 516 bool 517 518config SYS_SUPPORTS_SH_TMU 519 bool 520 521config SYS_SUPPORTS_EM_STI 522 bool 523 524config CLKSRC_JCORE_PIT 525 bool "J-Core PIT timer driver" if COMPILE_TEST 526 depends on OF 527 depends on HAS_IOMEM 528 select CLKSRC_MMIO 529 help 530 This enables build of clocksource and clockevent driver for 531 the integrated PIT in the J-Core synthesizable, open source SoC. 532 533config SH_TIMER_CMT 534 bool "Renesas CMT timer driver" if COMPILE_TEST 535 depends on HAS_IOMEM 536 default SYS_SUPPORTS_SH_CMT 537 help 538 This enables build of a clocksource and clockevent driver for 539 the Compare Match Timer (CMT) hardware available in 16/32/48-bit 540 variants on a wide range of Mobile and Automotive SoCs from Renesas. 541 542config SH_TIMER_MTU2 543 bool "Renesas MTU2 timer driver" if COMPILE_TEST 544 depends on HAS_IOMEM 545 default SYS_SUPPORTS_SH_MTU2 546 help 547 This enables build of a clockevent driver for the Multi-Function 548 Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas. 549 This hardware comes with 16-bit timer registers. 550 551config RENESAS_OSTM 552 bool "Renesas OSTM timer driver" 553 depends on ARCH_RENESAS || COMPILE_TEST 554 select CLKSRC_MMIO 555 select TIMER_OF 556 help 557 Enables the support for the Renesas OSTM. 558 559config SH_TIMER_TMU 560 bool "Renesas TMU timer driver" if COMPILE_TEST 561 depends on HAS_IOMEM 562 default SYS_SUPPORTS_SH_TMU 563 help 564 This enables build of a clocksource and clockevent driver for 565 the 32-bit Timer Unit (TMU) hardware available on a wide range 566 SoCs from Renesas. 567 568config EM_TIMER_STI 569 bool "Renesas STI timer driver" if COMPILE_TEST 570 depends on HAS_IOMEM 571 default SYS_SUPPORTS_EM_STI 572 help 573 This enables build of a clocksource and clockevent driver for 574 the 48-bit System Timer (STI) hardware available on a SoCs 575 such as EMEV2 from former NEC Electronics. 576 577config CLKSRC_QCOM 578 bool "Qualcomm MSM timer" if COMPILE_TEST 579 depends on ARM 580 select TIMER_OF 581 help 582 This enables the clocksource and the per CPU clockevent driver for the 583 Qualcomm SoCs. 584 585config CLKSRC_VERSATILE 586 bool "ARM Versatile (Express) reference platforms clock source" if COMPILE_TEST 587 depends on GENERIC_SCHED_CLOCK 588 select TIMER_OF 589 default y if (ARCH_VEXPRESS || ARCH_VERSATILE) && ARM 590 help 591 This option enables clock source based on free running 592 counter available in the "System Registers" block of 593 ARM Versatile and Versatile Express reference platforms. 594 595config CLKSRC_MIPS_GIC 596 bool 597 depends on MIPS_GIC 598 select CLOCKSOURCE_WATCHDOG 599 select TIMER_OF 600 601config CLKSRC_PXA 602 bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST 603 depends on HAS_IOMEM 604 select CLKSRC_MMIO 605 help 606 This enables OST0 support available on PXA and SA-11x0 607 platforms. 608 609config CLKSRC_IMX_GPT 610 bool "Clocksource using i.MX GPT" if COMPILE_TEST 611 depends on (ARM || ARM64) && HAVE_CLK 612 select CLKSRC_MMIO 613 614config CLKSRC_IMX_TPM 615 bool "Clocksource using i.MX TPM" if COMPILE_TEST 616 depends on (ARM || ARM64) && HAVE_CLK 617 select CLKSRC_MMIO 618 select TIMER_OF 619 help 620 Enable this option to use IMX Timer/PWM Module (TPM) timer as 621 clocksource. 622 623config TIMER_IMX_SYS_CTR 624 bool "i.MX system counter timer" if COMPILE_TEST 625 select TIMER_OF 626 help 627 Enable this option to use i.MX system counter timer as a 628 clockevent. 629 630config CLKSRC_LOONGSON1_PWM 631 bool "Clocksource using Loongson1 PWM" 632 depends on MACH_LOONGSON32 || COMPILE_TEST 633 select MIPS_EXTERNAL_TIMER 634 select TIMER_OF 635 help 636 Enable this option to use Loongson1 PWM timer as clocksource 637 instead of the performance counter. 638 639config CLKSRC_ST_LPC 640 bool "Low power clocksource found in the LPC" if COMPILE_TEST 641 select TIMER_OF if OF 642 depends on HAS_IOMEM 643 select CLKSRC_MMIO 644 help 645 Enable this option to use the Low Power controller timer 646 as clocksource. 647 648config GXP_TIMER 649 bool "GXP timer driver" if COMPILE_TEST && !ARCH_HPE 650 default ARCH_HPE 651 select TIMER_OF if OF 652 help 653 Provides a driver for the timer control found on HPE 654 GXP SOCs. This is required for all GXP SOCs. 655 656config RISCV_TIMER 657 bool "Timer for the RISC-V platform" if COMPILE_TEST 658 depends on GENERIC_SCHED_CLOCK && RISCV && RISCV_SBI 659 select TIMER_PROBE 660 select TIMER_OF 661 help 662 This enables the per-hart timer built into all RISC-V systems, which 663 is accessed via both the SBI and the rdcycle instruction. This is 664 required for all RISC-V systems. 665 666config CLINT_TIMER 667 bool "CLINT Timer for the RISC-V platform" if COMPILE_TEST 668 depends on GENERIC_SCHED_CLOCK && RISCV 669 select TIMER_PROBE 670 select TIMER_OF 671 help 672 This option enables the CLINT timer for RISC-V systems. The CLINT 673 driver is usually used for NoMMU RISC-V systems. 674 675config CSKY_MP_TIMER 676 bool "SMP Timer for the C-SKY platform" if COMPILE_TEST 677 depends on CSKY 678 select TIMER_OF 679 help 680 Say yes here to enable C-SKY SMP timer driver used for C-SKY SMP 681 system. 682 csky,mptimer is not only used in SMP system, it also could be used in 683 single core system. It's not a mmio reg and it uses mtcr/mfcr instruction. 684 685config GX6605S_TIMER 686 bool "Gx6605s SOC system timer driver" if COMPILE_TEST 687 depends on CSKY 688 select CLKSRC_MMIO 689 select TIMER_OF 690 help 691 This option enables support for gx6605s SOC's timer. 692 693config MILBEAUT_TIMER 694 bool "Milbeaut timer driver" if COMPILE_TEST 695 depends on OF 696 depends on ARM 697 select TIMER_OF 698 select CLKSRC_MMIO 699 help 700 Enables the support for Milbeaut timer driver. 701 702config MSC313E_TIMER 703 bool "MSC313E timer driver" if COMPILE_TEST 704 select TIMER_OF 705 select CLKSRC_MMIO 706 help 707 Enables support for the MStar MSC313E timer driver. 708 This provides access to multiple interrupt generating 709 programmable 32-bit free running incrementing counters. 710 711config INGENIC_TIMER 712 bool "Clocksource/timer using the TCU in Ingenic JZ SoCs" 713 default MACH_INGENIC 714 depends on MIPS || COMPILE_TEST 715 depends on COMMON_CLK 716 select MFD_SYSCON 717 select TIMER_OF 718 select IRQ_DOMAIN 719 help 720 Support for the timer/counter unit of the Ingenic JZ SoCs. 721 722config INGENIC_SYSOST 723 bool "Clocksource/timer using the SYSOST in Ingenic X SoCs" 724 depends on MIPS || COMPILE_TEST 725 depends on COMMON_CLK 726 select MFD_SYSCON 727 select TIMER_OF 728 select IRQ_DOMAIN 729 help 730 Support for the SYSOST of the Ingenic X Series SoCs. 731 732config INGENIC_OST 733 bool "Clocksource using the OST in Ingenic JZ SoCs" 734 depends on MIPS || COMPILE_TEST 735 depends on COMMON_CLK 736 select MFD_SYSCON 737 help 738 Support for the Operating System Timer of the Ingenic JZ SoCs. 739 740config MICROCHIP_PIT64B 741 bool "Microchip PIT64B support" 742 depends on OF && ARM 743 select TIMER_OF 744 help 745 This option enables Microchip PIT64B timer for Atmel 746 based system. It supports the oneshot, the periodic 747 modes and high resolution. It is used as a clocksource 748 and a clockevent. 749 750config GOLDFISH_TIMER 751 bool "Clocksource using goldfish-rtc" 752 depends on M68K || COMPILE_TEST 753 depends on RTC_DRV_GOLDFISH 754 help 755 Support for the timer/counter of goldfish-rtc 756 757config EP93XX_TIMER 758 bool "Cirrus Logic ep93xx timer driver" if COMPILE_TEST 759 depends on ARCH_EP93XX 760 depends on GENERIC_CLOCKEVENTS 761 depends on HAS_IOMEM 762 select CLKSRC_MMIO 763 select TIMER_OF 764 help 765 Enables support for the Cirrus Logic timer block 766 EP93XX. 767 768config RALINK_TIMER 769 bool "Ralink System Tick Counter" 770 depends on SOC_RT305X || SOC_MT7620 || COMPILE_TEST 771 select CLKSRC_MMIO 772 select TIMER_OF 773 help 774 Enables support for system tick counter present on 775 Ralink SoCs RT3352 and MT7620. 776 777config NXP_STM_TIMER 778 bool "NXP System Timer Module driver" 779 depends on ARCH_S32 || COMPILE_TEST 780 select CLKSRC_MMIO 781 help 782 Enables the support for NXP System Timer Module found in the 783 s32g NXP platform series. 784 785config RTK_SYSTIMER 786 bool "Realtek SYSTIMER support" 787 depends on ARM || ARM64 788 depends on ARCH_REALTEK || COMPILE_TEST 789 select TIMER_OF 790 help 791 This option enables the driver that registers the global 1 MHz hardware 792 counter as a clock event device on Realtek SoCs. Make sure to enable 793 this option only when building for a Realtek platform or for compilation 794 testing. 795 796endmenu