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_GLOBAL_TIMER
 162         bool
 163         select CLKSRC_OF if OF
 164         help
 165           This options enables support for the ARM global timer unit
 166
 167 config ARM_TIMER_SP804
 168         bool "Support for Dual Timer SP804 module"
 169         depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
 170         select CLKSRC_MMIO
 171         select CLKSRC_OF if OF
 172
 173 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
 174         bool
 175         depends on ARM_GLOBAL_TIMER
 176         default y
 177         help
 178          Use ARM global timer clock source as sched_clock
 179
 180 config ARMV7M_SYSTICK
 181         bool
 182         select CLKSRC_OF if OF
 183         select CLKSRC_MMIO
 184         help
 185           This options enables support for the ARMv7M system timer unit
 186
 187 config ATMEL_PIT
 188         select CLKSRC_OF if OF
 189         def_bool SOC_AT91SAM9 || SOC_SAMA5
 190
 191 config ATMEL_ST
 192         bool
 193         select CLKSRC_OF
 194         select MFD_SYSCON
 195
 196 config CLKSRC_METAG_GENERIC
 197         def_bool y if METAG
 198         help
 199           This option enables support for the Meta per-thread timers.
 200
 201 config CLKSRC_EXYNOS_MCT
 202         def_bool y if ARCH_EXYNOS
 203         depends on !ARM64
 204         help
 205           Support for Multi Core Timer controller on Exynos SoCs.
 206
 207 config CLKSRC_SAMSUNG_PWM
 208         bool
 209         help
 210           This is a new clocksource driver for the PWM timer found in
 211           Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
 212           for all devicetree enabled platforms. This driver will be
 213           needed only on systems that do not have the Exynos MCT available.
 214
 215 config FSL_FTM_TIMER
 216         bool
 217         help
 218           Support for Freescale FlexTimer Module (FTM) timer.
 219
 220 config VF_PIT_TIMER
 221         bool
 222         help
 223           Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
 224
 225 config SYS_SUPPORTS_SH_CMT
 226         bool
 227
 228 config MTK_TIMER
 229         select CLKSRC_OF
 230         select CLKSRC_MMIO
 231         bool
 232
 233 config SYS_SUPPORTS_SH_MTU2
 234         bool
 235
 236 config SYS_SUPPORTS_SH_TMU
 237         bool
 238
 239 config SYS_SUPPORTS_EM_STI
 240         bool
 241
 242 config SH_TIMER_CMT
 243         bool "Renesas CMT timer driver" if COMPILE_TEST
 244         depends on GENERIC_CLOCKEVENTS
 245         depends on HAS_IOMEM
 246         default SYS_SUPPORTS_SH_CMT
 247         help
 248           This enables build of a clocksource and clockevent driver for
 249           the Compare Match Timer (CMT) hardware available in 16/32/48-bit
 250           variants on a wide range of Mobile and Automotive SoCs from Renesas.
 251
 252 config SH_TIMER_MTU2
 253         bool "Renesas MTU2 timer driver" if COMPILE_TEST
 254         depends on GENERIC_CLOCKEVENTS
 255         depends on HAS_IOMEM
 256         default SYS_SUPPORTS_SH_MTU2
 257         help
 258           This enables build of a clockevent driver for the Multi-Function
 259           Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
 260           This hardware comes with 16 bit-timer registers.
 261
 262 config SH_TIMER_TMU
 263         bool "Renesas TMU timer driver" if COMPILE_TEST
 264         depends on GENERIC_CLOCKEVENTS
 265         depends on HAS_IOMEM
 266         default SYS_SUPPORTS_SH_TMU
 267         help
 268           This enables build of a clocksource and clockevent driver for
 269           the 32-bit Timer Unit (TMU) hardware available on a wide range
 270           SoCs from Renesas.
 271
 272 config EM_TIMER_STI
 273         bool "Renesas STI timer driver" if COMPILE_TEST
 274         depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
 275         default SYS_SUPPORTS_EM_STI
 276         help
 277           This enables build of a clocksource and clockevent driver for
 278           the 48-bit System Timer (STI) hardware available on a SoCs
 279           such as EMEV2 from former NEC Electronics.
 280
 281 config CLKSRC_QCOM
 282         bool "Qualcomm MSM timer" if COMPILE_TEST
 283         depends on ARM
 284         select CLKSRC_OF
 285         help
 286           This enables the clocksource and the per CPU clockevent driver for the
 287           Qualcomm SoCs.
 288
 289 config CLKSRC_VERSATILE
 290         bool "ARM Versatile (Express) reference platforms clock source"
 291         depends on PLAT_VERSATILE && GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
 292         select CLKSRC_OF
 293         default y if MFD_VEXPRESS_SYSREG
 294         help
 295           This option enables clock source based on free running
 296           counter available in the "System Registers" block of
 297           ARM Versatile, RealView and Versatile Express reference
 298           platforms.
 299
 300 config CLKSRC_MIPS_GIC
 301         bool
 302         depends on MIPS_GIC
 303         select CLKSRC_OF
 304
 305 config CLKSRC_TANGO_XTAL
 306         bool
 307         select CLKSRC_OF
 308
 309 config CLKSRC_PXA
 310         def_bool y if ARCH_PXA || ARCH_SA1100
 311         select CLKSRC_OF if OF
 312         help
 313           This enables OST0 support available on PXA and SA-11x0
 314           platforms.
 315
 316 config H8300_TMR16
 317         bool
 318
 319 config H8300_TPU
 320         bool
 321
 322 config CLKSRC_IMX_GPT
 323         bool "Clocksource using i.MX GPT" if COMPILE_TEST
 324         depends on ARM && CLKDEV_LOOKUP
 325         select CLKSRC_MMIO
 326
 327 config CLKSRC_ST_LPC
 328         bool
 329         select CLKSRC_OF if OF
 330         help
 331           Enable this option to use the Low Power controller timer
 332           as clocksource.
 333
 334 endmenu