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