drivers/clocksource/Kconfig

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