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_TI_32K
 127         bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
 128         depends on GENERIC_SCHED_CLOCK
 129         select CLKSRC_OF if OF
 130         help
 131           This option enables support for Texas Instruments 32.768 Hz clocksource
 132           available on many OMAP-like platforms.
 133
 134 config CLKSRC_STM32
 135         bool "Clocksource for STM32 SoCs" if !ARCH_STM32
 136         depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
 137         select CLKSRC_MMIO
 138
 139 config ARM_ARCH_TIMER
 140         bool
 141         select CLKSRC_OF if OF
 142         select CLKSRC_ACPI if ACPI
 143
 144 config ARM_ARCH_TIMER_EVTSTREAM
 145         bool "Support for ARM architected timer event stream generation"
 146         default y if ARM_ARCH_TIMER
 147         depends on ARM_ARCH_TIMER
 148         help
 149           This option enables support for event stream generation based on
 150           the ARM architected timer. It is used for waking up CPUs executing
 151           the wfe instruction at a frequency represented as a power-of-2
 152           divisor of the clock rate.
 153           The main use of the event stream is wfe-based timeouts of userspace
 154           locking implementations. It might also be useful for imposing timeout
 155           on wfe to safeguard against any programming errors in case an expected
 156           event is not generated.
 157           This must be disabled for hardware validation purposes to detect any
 158           hardware anomalies of missing events.
 159
 160 config ARM_GLOBAL_TIMER
 161         bool
 162         select CLKSRC_OF if OF
 163         help
 164           This options enables support for the ARM global timer unit
 165
 166 config ARM_TIMER_SP804
 167         bool "Support for Dual Timer SP804 module"
 168         depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
 169         select CLKSRC_MMIO
 170         select CLKSRC_OF if OF
 171
 172 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
 173         bool
 174         depends on ARM_GLOBAL_TIMER
 175         default y
 176         help
 177          Use ARM global timer clock source as sched_clock
 178
 179 config ARMV7M_SYSTICK
 180         bool
 181         select CLKSRC_OF if OF
 182         select CLKSRC_MMIO
 183         help
 184           This options enables support for the ARMv7M system timer unit
 185
 186 config ATMEL_PIT
 187         select CLKSRC_OF if OF
 188         def_bool SOC_AT91SAM9 || SOC_SAMA5
 189
 190 config ATMEL_ST
 191         bool
 192         select CLKSRC_OF
 193         select MFD_SYSCON
 194
 195 config CLKSRC_METAG_GENERIC
 196         def_bool y if METAG
 197         help
 198           This option enables support for the Meta per-thread timers.
 199
 200 config CLKSRC_EXYNOS_MCT
 201         def_bool y if ARCH_EXYNOS
 202         depends on !ARM64
 203         help
 204           Support for Multi Core Timer controller on Exynos SoCs.
 205
 206 config CLKSRC_SAMSUNG_PWM
 207         bool
 208         help
 209           This is a new clocksource driver for the PWM timer found in
 210           Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
 211           for all devicetree enabled platforms. This driver will be
 212           needed only on systems that do not have the Exynos MCT available.
 213
 214 config FSL_FTM_TIMER
 215         bool
 216         help
 217           Support for Freescale FlexTimer Module (FTM) timer.
 218
 219 config VF_PIT_TIMER
 220         bool
 221         help
 222           Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
 223
 224 config SYS_SUPPORTS_SH_CMT
 225         bool
 226
 227 config MTK_TIMER
 228         select CLKSRC_OF
 229         select CLKSRC_MMIO
 230         bool
 231
 232 config SYS_SUPPORTS_SH_MTU2
 233         bool
 234
 235 config SYS_SUPPORTS_SH_TMU
 236         bool
 237
 238 config SYS_SUPPORTS_EM_STI
 239         bool
 240
 241 config SH_TIMER_CMT
 242         bool "Renesas CMT timer driver" if COMPILE_TEST
 243         depends on GENERIC_CLOCKEVENTS
 244         depends on HAS_IOMEM
 245         default SYS_SUPPORTS_SH_CMT
 246         help
 247           This enables build of a clocksource and clockevent driver for
 248           the Compare Match Timer (CMT) hardware available in 16/32/48-bit
 249           variants on a wide range of Mobile and Automotive SoCs from Renesas.
 250
 251 config SH_TIMER_MTU2
 252         bool "Renesas MTU2 timer driver" if COMPILE_TEST
 253         depends on GENERIC_CLOCKEVENTS
 254         depends on HAS_IOMEM
 255         default SYS_SUPPORTS_SH_MTU2
 256         help
 257           This enables build of a clockevent driver for the Multi-Function
 258           Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
 259           This hardware comes with 16 bit-timer registers.
 260
 261 config SH_TIMER_TMU
 262         bool "Renesas TMU timer driver" if COMPILE_TEST
 263         depends on GENERIC_CLOCKEVENTS
 264         depends on HAS_IOMEM
 265         default SYS_SUPPORTS_SH_TMU
 266         help
 267           This enables build of a clocksource and clockevent driver for
 268           the 32-bit Timer Unit (TMU) hardware available on a wide range
 269           SoCs from Renesas.
 270
 271 config EM_TIMER_STI
 272         bool "Renesas STI timer driver" if COMPILE_TEST
 273         depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
 274         default SYS_SUPPORTS_EM_STI
 275         help
 276           This enables build of a clocksource and clockevent driver for
 277           the 48-bit System Timer (STI) hardware available on a SoCs
 278           such as EMEV2 from former NEC Electronics.
 279
 280 config CLKSRC_QCOM
 281         bool
 282
 283 config CLKSRC_VERSATILE
 284         bool "ARM Versatile (Express) reference platforms clock source"
 285         depends on PLAT_VERSATILE && GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
 286         select CLKSRC_OF
 287         default y if MFD_VEXPRESS_SYSREG
 288         help
 289           This option enables clock source based on free running
 290           counter available in the "System Registers" block of
 291           ARM Versatile, RealView and Versatile Express reference
 292           platforms.
 293
 294 config CLKSRC_MIPS_GIC
 295         bool
 296         depends on MIPS_GIC
 297         select CLKSRC_OF
 298
 299 config CLKSRC_TANGO_XTAL
 300         bool
 301         select CLKSRC_OF
 302
 303 config CLKSRC_PXA
 304         def_bool y if ARCH_PXA || ARCH_SA1100
 305         select CLKSRC_OF if OF
 306         help
 307           This enables OST0 support available on PXA and SA-11x0
 308           platforms.
 309
 310 config H8300_TMR16
 311         bool
 312
 313 config H8300_TPU
 314         bool
 315
 316 config CLKSRC_IMX_GPT
 317         bool "Clocksource using i.MX GPT" if COMPILE_TEST
 318         depends on ARM && CLKDEV_LOOKUP
 319         select CLKSRC_MMIO
 320
 321 config CLKSRC_ST_LPC
 322         bool
 323         depends on ARCH_STI
 324         select CLKSRC_OF if OF
 325         help
 326           Enable this option to use the Low Power controller timer
 327           as clocksource.
 328
 329 endmenu