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 ARM_ARCH_TIMER
 110         bool
 111         select CLKSRC_OF if OF
 112
 113 config ARM_ARCH_TIMER_EVTSTREAM
 114         bool "Support for ARM architected timer event stream generation"
 115         default y if ARM_ARCH_TIMER
 116         depends on ARM_ARCH_TIMER
 117         help
 118           This option enables support for event stream generation based on
 119           the ARM architected timer. It is used for waking up CPUs executing
 120           the wfe instruction at a frequency represented as a power-of-2
 121           divisor of the clock rate.
 122           The main use of the event stream is wfe-based timeouts of userspace
 123           locking implementations. It might also be useful for imposing timeout
 124           on wfe to safeguard against any programming errors in case an expected
 125           event is not generated.
 126           This must be disabled for hardware validation purposes to detect any
 127           hardware anomalies of missing events.
 128
 129 config ARM_GLOBAL_TIMER
 130         bool
 131         select CLKSRC_OF if OF
 132         help
 133           This options enables support for the ARM global timer unit
 134
 135 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
 136         bool
 137         depends on ARM_GLOBAL_TIMER
 138         default y
 139         help
 140          Use ARM global timer clock source as sched_clock
 141
 142 config ATMEL_PIT
 143         select CLKSRC_OF if OF
 144         def_bool SOC_AT91SAM9 || SOC_SAMA5
 145
 146 config ATMEL_ST
 147         bool
 148         select CLKSRC_OF
 149         select MFD_SYSCON
 150
 151 config CLKSRC_METAG_GENERIC
 152         def_bool y if METAG
 153         help
 154           This option enables support for the Meta per-thread timers.
 155
 156 config CLKSRC_EXYNOS_MCT
 157         def_bool y if ARCH_EXYNOS
 158         depends on !ARM64
 159         help
 160           Support for Multi Core Timer controller on Exynos SoCs.
 161
 162 config CLKSRC_SAMSUNG_PWM
 163         bool
 164         help
 165           This is a new clocksource driver for the PWM timer found in
 166           Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
 167           for all devicetree enabled platforms. This driver will be
 168           needed only on systems that do not have the Exynos MCT available.
 169
 170 config FSL_FTM_TIMER
 171         bool
 172         help
 173           Support for Freescale FlexTimer Module (FTM) timer.
 174
 175 config VF_PIT_TIMER
 176         bool
 177         help
 178           Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
 179
 180 config SYS_SUPPORTS_SH_CMT
 181         bool
 182
 183 config MTK_TIMER
 184         select CLKSRC_OF
 185         select CLKSRC_MMIO
 186         bool
 187
 188 config SYS_SUPPORTS_SH_MTU2
 189         bool
 190
 191 config SYS_SUPPORTS_SH_TMU
 192         bool
 193
 194 config SYS_SUPPORTS_EM_STI
 195         bool
 196
 197 config SH_TIMER_CMT
 198         bool "Renesas CMT timer driver" if COMPILE_TEST
 199         depends on GENERIC_CLOCKEVENTS
 200         depends on HAS_IOMEM
 201         default SYS_SUPPORTS_SH_CMT
 202         help
 203           This enables build of a clocksource and clockevent driver for
 204           the Compare Match Timer (CMT) hardware available in 16/32/48-bit
 205           variants on a wide range of Mobile and Automotive SoCs from Renesas.
 206
 207 config SH_TIMER_MTU2
 208         bool "Renesas MTU2 timer driver" if COMPILE_TEST
 209         depends on GENERIC_CLOCKEVENTS
 210         depends on HAS_IOMEM
 211         default SYS_SUPPORTS_SH_MTU2
 212         help
 213           This enables build of a clockevent driver for the Multi-Function
 214           Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
 215           This hardware comes with 16 bit-timer registers.
 216
 217 config SH_TIMER_TMU
 218         bool "Renesas TMU timer driver" if COMPILE_TEST
 219         depends on GENERIC_CLOCKEVENTS
 220         depends on HAS_IOMEM
 221         default SYS_SUPPORTS_SH_TMU
 222         help
 223           This enables build of a clocksource and clockevent driver for
 224           the 32-bit Timer Unit (TMU) hardware available on a wide range
 225           SoCs from Renesas.
 226
 227 config EM_TIMER_STI
 228         bool "Renesas STI timer driver" if COMPILE_TEST
 229         depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
 230         default SYS_SUPPORTS_EM_STI
 231         help
 232           This enables build of a clocksource and clockevent driver for
 233           the 48-bit System Timer (STI) hardware available on a SoCs
 234           such as EMEV2 from former NEC Electronics.
 235
 236 config CLKSRC_QCOM
 237         bool
 238
 239 config CLKSRC_VERSATILE
 240         bool "ARM Versatile (Express) reference platforms clock source"
 241         depends on PLAT_VERSATILE && GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
 242         select CLKSRC_OF
 243         default y if MFD_VEXPRESS_SYSREG
 244         help
 245           This option enables clock source based on free running
 246           counter available in the "System Registers" block of
 247           ARM Versatile, RealView and Versatile Express reference
 248           platforms.
 249
 250 config CLKSRC_MIPS_GIC
 251         bool
 252         depends on MIPS_GIC
 253         select CLKSRC_OF
 254
 255 config CLKSRC_PXA
 256         def_bool y if ARCH_PXA || ARCH_SA1100
 257         select CLKSRC_OF if USE_OF
 258         help
 259           This enables OST0 support available on PXA and SA-11x0
 260           platforms.
 261 endmenu