drivers/clocksource/Kconfig

   1 menu "Clock Source drivers"
   2
   3 config CLKSRC_OF
   4         bool
   5         select CLKSRC_PROBE
   6
   7 config CLKSRC_ACPI
   8         bool
   9         select CLKSRC_PROBE
  10
  11 config CLKSRC_PROBE
  12         bool
  13
  14 config CLKSRC_I8253
  15         bool
  16
  17 config CLKEVT_I8253
  18         bool
  19
  20 config I8253_LOCK
  21         bool
  22
  23 config CLKBLD_I8253
  24         def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
  25
  26 config CLKSRC_MMIO
  27         bool
  28
  29 config DIGICOLOR_TIMER
  30         bool
  31
  32 config DW_APB_TIMER
  33         bool
  34
  35 config DW_APB_TIMER_OF
  36         bool
  37         select DW_APB_TIMER
  38         select CLKSRC_OF
  39
  40 config ROCKCHIP_TIMER
  41         bool
  42         select CLKSRC_OF
  43
  44 config ARMADA_370_XP_TIMER
  45         bool
  46         select CLKSRC_OF
  47
  48 config MESON6_TIMER
  49         bool
  50         select CLKSRC_MMIO
  51
  52 config ORION_TIMER
  53         select CLKSRC_OF
  54         select CLKSRC_MMIO
  55         bool
  56
  57 config SUN4I_TIMER
  58         select CLKSRC_MMIO
  59         bool
  60
  61 config SUN5I_HSTIMER
  62         select CLKSRC_MMIO
  63         bool
  64
  65 config TEGRA_TIMER
  66         bool
  67
  68 config VT8500_TIMER
  69         bool
  70
  71 config CADENCE_TTC_TIMER
  72         bool
  73
  74 config ASM9260_TIMER
  75         bool
  76         select CLKSRC_MMIO
  77         select CLKSRC_OF
  78
  79 config CLKSRC_NOMADIK_MTU
  80         bool
  81         depends on (ARCH_NOMADIK || ARCH_U8500)
  82         select CLKSRC_MMIO
  83         help
  84           Support for Multi Timer Unit. MTU provides access
  85           to multiple interrupt generating programmable
  86           32-bit free running decrementing counters.
  87
  88 config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
  89         bool
  90         depends on CLKSRC_NOMADIK_MTU
  91         help
  92           Use the Multi Timer Unit as the sched_clock.
  93
  94 config CLKSRC_DBX500_PRCMU
  95         bool "Clocksource PRCMU Timer"
  96         depends on UX500_SOC_DB8500
  97         default y
  98         help
  99           Use the always on PRCMU Timer as clocksource
 100
 101 config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
 102         bool "Clocksource PRCMU Timer sched_clock"
 103         depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
 104         default y
 105         help
 106           Use the always on PRCMU Timer as sched_clock
 107
 108 config CLKSRC_EFM32
 109         bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
 110         depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
 111         select CLKSRC_MMIO
 112         default ARCH_EFM32
 113         help
 114           Support to use the timers of EFM32 SoCs as clock source and clock
 115           event device.
 116
 117 config CLKSRC_LPC32XX
 118         bool
 119         select CLKSRC_MMIO
 120         select CLKSRC_OF
 121
 122 config CLKSRC_PISTACHIO
 123         bool
 124         select CLKSRC_OF
 125
 126 config CLKSRC_STM32
 127         bool "Clocksource for STM32 SoCs" if !ARCH_STM32
 128         depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
 129         select CLKSRC_MMIO
 130
 131 config ARM_ARCH_TIMER
 132         bool
 133         select CLKSRC_OF if OF
 134         select CLKSRC_ACPI if ACPI
 135
 136 config ARM_ARCH_TIMER_EVTSTREAM
 137         bool "Support for ARM architected timer event stream generation"
 138         default y if ARM_ARCH_TIMER
 139         depends on ARM_ARCH_TIMER
 140         help
 141           This option enables support for event stream generation based on
 142           the ARM architected timer. It is used for waking up CPUs executing
 143           the wfe instruction at a frequency represented as a power-of-2
 144           divisor of the clock rate.
 145           The main use of the event stream is wfe-based timeouts of userspace
 146           locking implementations. It might also be useful for imposing timeout
 147           on wfe to safeguard against any programming errors in case an expected
 148           event is not generated.
 149           This must be disabled for hardware validation purposes to detect any
 150           hardware anomalies of missing events.
 151
 152 config ARM_GLOBAL_TIMER
 153         bool
 154         select CLKSRC_OF if OF
 155         help
 156           This options enables support for the ARM global timer unit
 157
 158 config ARM_TIMER_SP804
 159         bool "Support for Dual Timer SP804 module"
 160         depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
 161         select CLKSRC_MMIO
 162         select CLKSRC_OF if OF
 163
 164 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
 165         bool
 166         depends on ARM_GLOBAL_TIMER
 167         default y
 168         help
 169          Use ARM global timer clock source as sched_clock
 170
 171 config ARMV7M_SYSTICK
 172         bool
 173         select CLKSRC_OF if OF
 174         select CLKSRC_MMIO
 175         help
 176           This options enables support for the ARMv7M system timer unit
 177
 178 config ATMEL_PIT
 179         select CLKSRC_OF if OF
 180         def_bool SOC_AT91SAM9 || SOC_SAMA5
 181
 182 config ATMEL_ST
 183         bool
 184         select CLKSRC_OF
 185         select MFD_SYSCON
 186
 187 config CLKSRC_METAG_GENERIC
 188         def_bool y if METAG
 189         help
 190           This option enables support for the Meta per-thread timers.
 191
 192 config CLKSRC_EXYNOS_MCT
 193         def_bool y if ARCH_EXYNOS
 194         depends on !ARM64
 195         help
 196           Support for Multi Core Timer controller on Exynos SoCs.
 197
 198 config CLKSRC_SAMSUNG_PWM
 199         bool
 200         help
 201           This is a new clocksource driver for the PWM timer found in
 202           Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
 203           for all devicetree enabled platforms. This driver will be
 204           needed only on systems that do not have the Exynos MCT available.
 205
 206 config FSL_FTM_TIMER
 207         bool
 208         help
 209           Support for Freescale FlexTimer Module (FTM) timer.
 210
 211 config VF_PIT_TIMER
 212         bool
 213         help
 214           Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
 215
 216 config SYS_SUPPORTS_SH_CMT
 217         bool
 218
 219 config MTK_TIMER
 220         select CLKSRC_OF
 221         select CLKSRC_MMIO
 222         bool
 223
 224 config SYS_SUPPORTS_SH_MTU2
 225         bool
 226
 227 config SYS_SUPPORTS_SH_TMU
 228         bool
 229
 230 config SYS_SUPPORTS_EM_STI
 231         bool
 232
 233 config SH_TIMER_CMT
 234         bool "Renesas CMT timer driver" if COMPILE_TEST
 235         depends on GENERIC_CLOCKEVENTS
 236         depends on HAS_IOMEM
 237         default SYS_SUPPORTS_SH_CMT
 238         help
 239           This enables build of a clocksource and clockevent driver for
 240           the Compare Match Timer (CMT) hardware available in 16/32/48-bit
 241           variants on a wide range of Mobile and Automotive SoCs from Renesas.
 242
 243 config SH_TIMER_MTU2
 244         bool "Renesas MTU2 timer driver" if COMPILE_TEST
 245         depends on GENERIC_CLOCKEVENTS
 246         depends on HAS_IOMEM
 247         default SYS_SUPPORTS_SH_MTU2
 248         help
 249           This enables build of a clockevent driver for the Multi-Function
 250           Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
 251           This hardware comes with 16 bit-timer registers.
 252
 253 config SH_TIMER_TMU
 254         bool "Renesas TMU timer driver" if COMPILE_TEST
 255         depends on GENERIC_CLOCKEVENTS
 256         depends on HAS_IOMEM
 257         default SYS_SUPPORTS_SH_TMU
 258         help
 259           This enables build of a clocksource and clockevent driver for
 260           the 32-bit Timer Unit (TMU) hardware available on a wide range
 261           SoCs from Renesas.
 262
 263 config EM_TIMER_STI
 264         bool "Renesas STI timer driver" if COMPILE_TEST
 265         depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
 266         default SYS_SUPPORTS_EM_STI
 267         help
 268           This enables build of a clocksource and clockevent driver for
 269           the 48-bit System Timer (STI) hardware available on a SoCs
 270           such as EMEV2 from former NEC Electronics.
 271
 272 config CLKSRC_QCOM
 273         bool
 274
 275 config CLKSRC_VERSATILE
 276         bool "ARM Versatile (Express) reference platforms clock source"
 277         depends on PLAT_VERSATILE && GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
 278         select CLKSRC_OF
 279         default y if MFD_VEXPRESS_SYSREG
 280         help
 281           This option enables clock source based on free running
 282           counter available in the "System Registers" block of
 283           ARM Versatile, RealView and Versatile Express reference
 284           platforms.
 285
 286 config CLKSRC_MIPS_GIC
 287         bool
 288         depends on MIPS_GIC
 289         select CLKSRC_OF
 290
 291 config CLKSRC_TANGO_XTAL
 292         bool
 293         select CLKSRC_OF
 294
 295 config CLKSRC_PXA
 296         def_bool y if ARCH_PXA || ARCH_SA1100
 297         select CLKSRC_OF if OF
 298         help
 299           This enables OST0 support available on PXA and SA-11x0
 300           platforms.
 301
 302 config H8300_TMR16
 303         bool
 304
 305 config H8300_TPU
 306         bool
 307
 308 config CLKSRC_IMX_GPT
 309         bool "Clocksource using i.MX GPT" if COMPILE_TEST
 310         depends on ARM && CLKDEV_LOOKUP
 311         select CLKSRC_MMIO
 312
 313 config CLKSRC_ST_LPC
 314         bool
 315         depends on ARCH_STI
 316         select CLKSRC_OF if OF
 317         help
 318           Enable this option to use the Low Power controller timer
 319           as clocksource.
 320
 321 endmenu