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 CLKSRC_NOMADIK_MTU
  67         bool
  68         depends on (ARCH_NOMADIK || ARCH_U8500)
  69         select CLKSRC_MMIO
  70         help
  71           Support for Multi Timer Unit. MTU provides access
  72           to multiple interrupt generating programmable
  73           32-bit free running decrementing counters.
  74
  75 config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
  76         bool
  77         depends on CLKSRC_NOMADIK_MTU
  78         help
  79           Use the Multi Timer Unit as the sched_clock.
  80
  81 config CLKSRC_DBX500_PRCMU
  82         bool "Clocksource PRCMU Timer"
  83         depends on UX500_SOC_DB8500
  84         default y
  85         help
  86           Use the always on PRCMU Timer as clocksource
  87
  88 config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
  89         bool "Clocksource PRCMU Timer sched_clock"
  90         depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
  91         default y
  92         help
  93           Use the always on PRCMU Timer as sched_clock
  94
  95 config CLKSRC_EFM32
  96         bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
  97         depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
  98         select CLKSRC_MMIO
  99         default ARCH_EFM32
 100         help
 101           Support to use the timers of EFM32 SoCs as clock source and clock
 102           event device.
 103
 104 config ARM_ARCH_TIMER
 105         bool
 106         select CLKSRC_OF if OF
 107
 108 config ARM_ARCH_TIMER_EVTSTREAM
 109         bool "Support for ARM architected timer event stream generation"
 110         default y if ARM_ARCH_TIMER
 111         depends on ARM_ARCH_TIMER
 112         help
 113           This option enables support for event stream generation based on
 114           the ARM architected timer. It is used for waking up CPUs executing
 115           the wfe instruction at a frequency represented as a power-of-2
 116           divisor of the clock rate.
 117           The main use of the event stream is wfe-based timeouts of userspace
 118           locking implementations. It might also be useful for imposing timeout
 119           on wfe to safeguard against any programming errors in case an expected
 120           event is not generated.
 121           This must be disabled for hardware validation purposes to detect any
 122           hardware anomalies of missing events.
 123
 124 config ARM_GLOBAL_TIMER
 125         bool
 126         select CLKSRC_OF if OF
 127         help
 128           This options enables support for the ARM global timer unit
 129
 130 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
 131         bool
 132         depends on ARM_GLOBAL_TIMER
 133         default y
 134         help
 135          Use ARM global timer clock source as sched_clock
 136
 137 config ATMEL_PIT
 138         select CLKSRC_OF if OF
 139         def_bool SOC_AT91SAM9 || SOC_SAMA5
 140
 141 config CLKSRC_METAG_GENERIC
 142         def_bool y if METAG
 143         help
 144           This option enables support for the Meta per-thread timers.
 145
 146 config CLKSRC_EXYNOS_MCT
 147         def_bool y if ARCH_EXYNOS
 148         depends on !ARM64
 149         help
 150           Support for Multi Core Timer controller on Exynos SoCs.
 151
 152 config CLKSRC_SAMSUNG_PWM
 153         bool
 154         help
 155           This is a new clocksource driver for the PWM timer found in
 156           Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
 157           for all devicetree enabled platforms. This driver will be
 158           needed only on systems that do not have the Exynos MCT available.
 159
 160 config FSL_FTM_TIMER
 161         bool
 162         help
 163           Support for Freescale FlexTimer Module (FTM) timer.
 164
 165 config VF_PIT_TIMER
 166         bool
 167         help
 168           Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
 169
 170 config SYS_SUPPORTS_SH_CMT
 171         bool
 172
 173 config MTK_TIMER
 174         select CLKSRC_OF
 175         select CLKSRC_MMIO
 176         bool
 177
 178 config SYS_SUPPORTS_SH_MTU2
 179         bool
 180
 181 config SYS_SUPPORTS_SH_TMU
 182         bool
 183
 184 config SYS_SUPPORTS_EM_STI
 185         bool
 186
 187 config SH_TIMER_CMT
 188         bool "Renesas CMT timer driver" if COMPILE_TEST
 189         depends on GENERIC_CLOCKEVENTS
 190         default SYS_SUPPORTS_SH_CMT
 191         help
 192           This enables build of a clocksource and clockevent driver for
 193           the Compare Match Timer (CMT) hardware available in 16/32/48-bit
 194           variants on a wide range of Mobile and Automotive SoCs from Renesas.
 195
 196 config SH_TIMER_MTU2
 197         bool "Renesas MTU2 timer driver" if COMPILE_TEST
 198         depends on GENERIC_CLOCKEVENTS
 199         default SYS_SUPPORTS_SH_MTU2
 200         help
 201           This enables build of a clockevent driver for the Multi-Function
 202           Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
 203           This hardware comes with 16 bit-timer registers.
 204
 205 config SH_TIMER_TMU
 206         bool "Renesas TMU timer driver" if COMPILE_TEST
 207         depends on GENERIC_CLOCKEVENTS
 208         default SYS_SUPPORTS_SH_TMU
 209         help
 210           This enables build of a clocksource and clockevent driver for
 211           the 32-bit Timer Unit (TMU) hardware available on a wide range
 212           SoCs from Renesas.
 213
 214 config EM_TIMER_STI
 215         bool "Renesas STI timer driver" if COMPILE_TEST
 216         depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
 217         default SYS_SUPPORTS_EM_STI
 218         help
 219           This enables build of a clocksource and clockevent driver for
 220           the 48-bit System Timer (STI) hardware available on a SoCs
 221           such as EMEV2 from former NEC Electronics.
 222
 223 config CLKSRC_QCOM
 224         bool
 225
 226 config CLKSRC_VERSATILE
 227         bool "ARM Versatile (Express) reference platforms clock source"
 228         depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
 229         select CLKSRC_OF
 230         default y if MFD_VEXPRESS_SYSREG
 231         help
 232           This option enables clock source based on free running
 233           counter available in the "System Registers" block of
 234           ARM Versatile, RealView and Versatile Express reference
 235           platforms.
 236
 237 config CLKSRC_MIPS_GIC
 238         bool
 239         depends on MIPS_GIC
 240         select CLKSRC_OF
 241
 242 config CLKSRC_PXA
 243         def_bool y if ARCH_PXA || ARCH_SA1100
 244         select CLKSRC_OF if USE_OF
 245         help
 246           This enables OST0 support available on PXA and SA-11x0
 247           platforms.
 248
 249 config ASM9260_TIMER
 250         bool "Alphascale ASM9260 timer driver"
 251         depends on GENERIC_CLOCKEVENTS
 252         select CLKSRC_MMIO
 253         select CLKSRC_OF
 254         default y if MACH_ASM9260
 255         help
 256           This enables build of a clocksource and clockevent driver for
 257           the 32-bit System Timer hardware available on a Alphascale ASM9260.
 258
 259 endmenu