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 ARM_ARCH_TIMER
 115         bool
 116         select CLKSRC_OF if OF
 117
 118 config ARM_ARCH_TIMER_EVTSTREAM
 119         bool "Support for ARM architected timer event stream generation"
 120         default y if ARM_ARCH_TIMER
 121         depends on ARM_ARCH_TIMER
 122         help
 123           This option enables support for event stream generation based on
 124           the ARM architected timer. It is used for waking up CPUs executing
 125           the wfe instruction at a frequency represented as a power-of-2
 126           divisor of the clock rate.
 127           The main use of the event stream is wfe-based timeouts of userspace
 128           locking implementations. It might also be useful for imposing timeout
 129           on wfe to safeguard against any programming errors in case an expected
 130           event is not generated.
 131           This must be disabled for hardware validation purposes to detect any
 132           hardware anomalies of missing events.
 133
 134 config ARM_GLOBAL_TIMER
 135         bool
 136         select CLKSRC_OF if OF
 137         help
 138           This options enables support for the ARM global timer unit
 139
 140 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
 141         bool
 142         depends on ARM_GLOBAL_TIMER
 143         default y
 144         help
 145          Use ARM global timer clock source as sched_clock
 146
 147 config ARMV7M_SYSTICK
 148         bool
 149         select CLKSRC_OF if OF
 150         select CLKSRC_MMIO
 151         help
 152           This options enables support for the ARMv7M system timer unit
 153
 154 config ATMEL_PIT
 155         select CLKSRC_OF if OF
 156         def_bool SOC_AT91SAM9 || SOC_SAMA5
 157
 158 config ATMEL_ST
 159         bool
 160         select CLKSRC_OF
 161         select MFD_SYSCON
 162
 163 config CLKSRC_METAG_GENERIC
 164         def_bool y if METAG
 165         help
 166           This option enables support for the Meta per-thread timers.
 167
 168 config CLKSRC_EXYNOS_MCT
 169         def_bool y if ARCH_EXYNOS
 170         depends on !ARM64
 171         help
 172           Support for Multi Core Timer controller on Exynos SoCs.
 173
 174 config CLKSRC_SAMSUNG_PWM
 175         bool
 176         help
 177           This is a new clocksource driver for the PWM timer found in
 178           Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
 179           for all devicetree enabled platforms. This driver will be
 180           needed only on systems that do not have the Exynos MCT available.
 181
 182 config FSL_FTM_TIMER
 183         bool
 184         help
 185           Support for Freescale FlexTimer Module (FTM) timer.
 186
 187 config VF_PIT_TIMER
 188         bool
 189         help
 190           Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
 191
 192 config SYS_SUPPORTS_SH_CMT
 193         bool
 194
 195 config MTK_TIMER
 196         select CLKSRC_OF
 197         select CLKSRC_MMIO
 198         bool
 199
 200 config SYS_SUPPORTS_SH_MTU2
 201         bool
 202
 203 config SYS_SUPPORTS_SH_TMU
 204         bool
 205
 206 config SYS_SUPPORTS_EM_STI
 207         bool
 208
 209 config SH_TIMER_CMT
 210         bool "Renesas CMT timer driver" if COMPILE_TEST
 211         depends on GENERIC_CLOCKEVENTS
 212         depends on HAS_IOMEM
 213         default SYS_SUPPORTS_SH_CMT
 214         help
 215           This enables build of a clocksource and clockevent driver for
 216           the Compare Match Timer (CMT) hardware available in 16/32/48-bit
 217           variants on a wide range of Mobile and Automotive SoCs from Renesas.
 218
 219 config SH_TIMER_MTU2
 220         bool "Renesas MTU2 timer driver" if COMPILE_TEST
 221         depends on GENERIC_CLOCKEVENTS
 222         depends on HAS_IOMEM
 223         default SYS_SUPPORTS_SH_MTU2
 224         help
 225           This enables build of a clockevent driver for the Multi-Function
 226           Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
 227           This hardware comes with 16 bit-timer registers.
 228
 229 config SH_TIMER_TMU
 230         bool "Renesas TMU timer driver" if COMPILE_TEST
 231         depends on GENERIC_CLOCKEVENTS
 232         depends on HAS_IOMEM
 233         default SYS_SUPPORTS_SH_TMU
 234         help
 235           This enables build of a clocksource and clockevent driver for
 236           the 32-bit Timer Unit (TMU) hardware available on a wide range
 237           SoCs from Renesas.
 238
 239 config EM_TIMER_STI
 240         bool "Renesas STI timer driver" if COMPILE_TEST
 241         depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
 242         default SYS_SUPPORTS_EM_STI
 243         help
 244           This enables build of a clocksource and clockevent driver for
 245           the 48-bit System Timer (STI) hardware available on a SoCs
 246           such as EMEV2 from former NEC Electronics.
 247
 248 config CLKSRC_QCOM
 249         bool
 250
 251 config CLKSRC_VERSATILE
 252         bool "ARM Versatile (Express) reference platforms clock source"
 253         depends on PLAT_VERSATILE && GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
 254         select CLKSRC_OF
 255         default y if MFD_VEXPRESS_SYSREG
 256         help
 257           This option enables clock source based on free running
 258           counter available in the "System Registers" block of
 259           ARM Versatile, RealView and Versatile Express reference
 260           platforms.
 261
 262 config CLKSRC_MIPS_GIC
 263         bool
 264         depends on MIPS_GIC
 265         select CLKSRC_OF
 266
 267 config CLKSRC_PXA
 268         def_bool y if ARCH_PXA || ARCH_SA1100
 269         select CLKSRC_OF if USE_OF
 270         help
 271           This enables OST0 support available on PXA and SA-11x0
 272           platforms.
 273 endmenu