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 DIGICOLOR_TIMER
  31         bool
  32
  33 config DW_APB_TIMER
  34         bool
  35
  36 config DW_APB_TIMER_OF
  37         bool
  38         select DW_APB_TIMER
  39         select CLKSRC_OF
  40
  41 config ROCKCHIP_TIMER
  42         bool
  43         select CLKSRC_OF
  44
  45 config ARMADA_370_XP_TIMER
  46         bool
  47         select CLKSRC_OF
  48
  49 config MESON6_TIMER
  50         bool
  51         select CLKSRC_MMIO
  52
  53 config ORION_TIMER
  54         select CLKSRC_OF
  55         select CLKSRC_MMIO
  56         bool
  57
  58 config SUN4I_TIMER
  59         select CLKSRC_MMIO
  60         bool
  61
  62 config SUN5I_HSTIMER
  63         select CLKSRC_MMIO
  64         bool
  65
  66 config TEGRA_TIMER
  67         bool
  68
  69 config VT8500_TIMER
  70         bool
  71
  72 config CADENCE_TTC_TIMER
  73         bool
  74
  75 config ASM9260_TIMER
  76         bool
  77         select CLKSRC_MMIO
  78         select CLKSRC_OF
  79
  80 config CLKSRC_NOMADIK_MTU
  81         bool
  82         depends on (ARCH_NOMADIK || ARCH_U8500)
  83         select CLKSRC_MMIO
  84         help
  85           Support for Multi Timer Unit. MTU provides access
  86           to multiple interrupt generating programmable
  87           32-bit free running decrementing counters.
  88
  89 config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
  90         bool
  91         depends on CLKSRC_NOMADIK_MTU
  92         help
  93           Use the Multi Timer Unit as the sched_clock.
  94
  95 config CLKSRC_DBX500_PRCMU
  96         bool "Clocksource PRCMU Timer"
  97         depends on UX500_SOC_DB8500
  98         default y
  99         help
 100           Use the always on PRCMU Timer as clocksource
 101
 102 config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
 103         bool "Clocksource PRCMU Timer sched_clock"
 104         depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
 105         default y
 106         help
 107           Use the always on PRCMU Timer as sched_clock
 108
 109 config CLKSRC_EFM32
 110         bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
 111         depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
 112         select CLKSRC_MMIO
 113         default ARCH_EFM32
 114         help
 115           Support to use the timers of EFM32 SoCs as clock source and clock
 116           event device.
 117
 118 config CLKSRC_LPC32XX
 119         bool
 120         select CLKSRC_MMIO
 121         select CLKSRC_OF
 122
 123 config CLKSRC_PISTACHIO
 124         bool
 125         select CLKSRC_OF
 126
 127 config CLKSRC_TI_32K
 128         bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
 129         depends on GENERIC_SCHED_CLOCK
 130         select CLKSRC_OF if OF
 131         help
 132           This option enables support for Texas Instruments 32.768 Hz clocksource
 133           available on many OMAP-like platforms.
 134
 135 config CLKSRC_STM32
 136         bool "Clocksource for STM32 SoCs" if !ARCH_STM32
 137         depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
 138         select CLKSRC_MMIO
 139
 140 config ARM_ARCH_TIMER
 141         bool
 142         select CLKSRC_OF if OF
 143         select CLKSRC_ACPI if ACPI
 144
 145 config ARM_ARCH_TIMER_EVTSTREAM
 146         bool "Support for ARM architected timer event stream generation"
 147         default y if ARM_ARCH_TIMER
 148         depends on ARM_ARCH_TIMER
 149         help
 150           This option enables support for event stream generation based on
 151           the ARM architected timer. It is used for waking up CPUs executing
 152           the wfe instruction at a frequency represented as a power-of-2
 153           divisor of the clock rate.
 154           The main use of the event stream is wfe-based timeouts of userspace
 155           locking implementations. It might also be useful for imposing timeout
 156           on wfe to safeguard against any programming errors in case an expected
 157           event is not generated.
 158           This must be disabled for hardware validation purposes to detect any
 159           hardware anomalies of missing events.
 160
 161 config ARM_ARCH_TIMER_VCT_ACCESS
 162         bool "Support for ARM architected timer virtual counter access in userspace"
 163         default !ARM64
 164         depends on ARM_ARCH_TIMER
 165         help
 166           This option enables support for reading the ARM architected timer's
 167           virtual counter in userspace.
 168
 169 config ARM_GLOBAL_TIMER
 170         bool
 171         select CLKSRC_OF if OF
 172         help
 173           This options enables support for the ARM global timer unit
 174
 175 config ARM_TIMER_SP804
 176         bool "Support for Dual Timer SP804 module"
 177         depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
 178         select CLKSRC_MMIO
 179         select CLKSRC_OF if OF
 180
 181 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
 182         bool
 183         depends on ARM_GLOBAL_TIMER
 184         default y
 185         help
 186          Use ARM global timer clock source as sched_clock
 187
 188 config ARMV7M_SYSTICK
 189         bool
 190         select CLKSRC_OF if OF
 191         select CLKSRC_MMIO
 192         help
 193           This options enables support for the ARMv7M system timer unit
 194
 195 config ATMEL_PIT
 196         select CLKSRC_OF if OF
 197         def_bool SOC_AT91SAM9 || SOC_SAMA5
 198
 199 config ATMEL_ST
 200         bool
 201         select CLKSRC_OF
 202         select MFD_SYSCON
 203
 204 config CLKSRC_METAG_GENERIC
 205         def_bool y if METAG
 206         help
 207           This option enables support for the Meta per-thread timers.
 208
 209 config CLKSRC_EXYNOS_MCT
 210         def_bool y if ARCH_EXYNOS
 211         help
 212           Support for Multi Core Timer controller on Exynos SoCs.
 213
 214 config CLKSRC_SAMSUNG_PWM
 215         bool
 216         help
 217           This is a new clocksource driver for the PWM timer found in
 218           Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
 219           for all devicetree enabled platforms. This driver will be
 220           needed only on systems that do not have the Exynos MCT available.
 221
 222 config FSL_FTM_TIMER
 223         bool
 224         help
 225           Support for Freescale FlexTimer Module (FTM) timer.
 226
 227 config VF_PIT_TIMER
 228         bool
 229         help
 230           Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
 231
 232 config SYS_SUPPORTS_SH_CMT
 233         bool
 234
 235 config MTK_TIMER
 236         select CLKSRC_OF
 237         select CLKSRC_MMIO
 238         bool
 239
 240 config SYS_SUPPORTS_SH_MTU2
 241         bool
 242
 243 config SYS_SUPPORTS_SH_TMU
 244         bool
 245
 246 config SYS_SUPPORTS_EM_STI
 247         bool
 248
 249 config SH_TIMER_CMT
 250         bool "Renesas CMT timer driver" if COMPILE_TEST
 251         depends on GENERIC_CLOCKEVENTS
 252         depends on HAS_IOMEM
 253         default SYS_SUPPORTS_SH_CMT
 254         help
 255           This enables build of a clocksource and clockevent driver for
 256           the Compare Match Timer (CMT) hardware available in 16/32/48-bit
 257           variants on a wide range of Mobile and Automotive SoCs from Renesas.
 258
 259 config SH_TIMER_MTU2
 260         bool "Renesas MTU2 timer driver" if COMPILE_TEST
 261         depends on GENERIC_CLOCKEVENTS
 262         depends on HAS_IOMEM
 263         default SYS_SUPPORTS_SH_MTU2
 264         help
 265           This enables build of a clockevent driver for the Multi-Function
 266           Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
 267           This hardware comes with 16 bit-timer registers.
 268
 269 config SH_TIMER_TMU
 270         bool "Renesas TMU timer driver" if COMPILE_TEST
 271         depends on GENERIC_CLOCKEVENTS
 272         depends on HAS_IOMEM
 273         default SYS_SUPPORTS_SH_TMU
 274         help
 275           This enables build of a clocksource and clockevent driver for
 276           the 32-bit Timer Unit (TMU) hardware available on a wide range
 277           SoCs from Renesas.
 278
 279 config EM_TIMER_STI
 280         bool "Renesas STI timer driver" if COMPILE_TEST
 281         depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
 282         default SYS_SUPPORTS_EM_STI
 283         help
 284           This enables build of a clocksource and clockevent driver for
 285           the 48-bit System Timer (STI) hardware available on a SoCs
 286           such as EMEV2 from former NEC Electronics.
 287
 288 config CLKSRC_QCOM
 289         bool
 290
 291 config CLKSRC_VERSATILE
 292         bool "ARM Versatile (Express) reference platforms clock source"
 293         depends on PLAT_VERSATILE && GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
 294         select CLKSRC_OF
 295         default y if MFD_VEXPRESS_SYSREG
 296         help
 297           This option enables clock source based on free running
 298           counter available in the "System Registers" block of
 299           ARM Versatile, RealView and Versatile Express reference
 300           platforms.
 301
 302 config CLKSRC_MIPS_GIC
 303         bool
 304         depends on MIPS_GIC
 305         select CLKSRC_OF
 306
 307 config CLKSRC_TANGO_XTAL
 308         bool
 309         select CLKSRC_OF
 310
 311 config CLKSRC_PXA
 312         def_bool y if ARCH_PXA || ARCH_SA1100
 313         select CLKSRC_OF if OF
 314         help
 315           This enables OST0 support available on PXA and SA-11x0
 316           platforms.
 317
 318 config H8300_TMR16
 319         bool
 320
 321 config H8300_TPU
 322         bool
 323
 324 config CLKSRC_IMX_GPT
 325         bool "Clocksource using i.MX GPT" if COMPILE_TEST
 326         depends on ARM && CLKDEV_LOOKUP
 327         select CLKSRC_MMIO
 328
 329 config CLKSRC_ST_LPC
 330         bool
 331         depends on ARCH_STI
 332         select CLKSRC_OF if OF
 333         help
 334           Enable this option to use the Low Power controller timer
 335           as clocksource.
 336
 337 endmenu