drivers/clocksource/Kconfig

   1 config CLKSRC_OF
   2         bool
   3
   4 config CLKSRC_I8253
   5         bool
   6
   7 config CLKEVT_I8253
   8         bool
   9
  10 config I8253_LOCK
  11         bool
  12
  13 config CLKBLD_I8253
  14         def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
  15
  16 config CLKSRC_MMIO
  17         bool
  18
  19 config DW_APB_TIMER
  20         bool
  21
  22 config DW_APB_TIMER_OF
  23         bool
  24         select DW_APB_TIMER
  25         select CLKSRC_OF
  26
  27 config ARMADA_370_XP_TIMER
  28         bool
  29         select CLKSRC_OF
  30
  31 config ORION_TIMER
  32         select CLKSRC_OF
  33         select CLKSRC_MMIO
  34         bool
  35
  36 config SUN4I_TIMER
  37         select CLKSRC_MMIO
  38         bool
  39
  40 config SUN5I_HSTIMER
  41         select CLKSRC_MMIO
  42         bool
  43
  44 config VT8500_TIMER
  45         bool
  46
  47 config CADENCE_TTC_TIMER
  48         bool
  49
  50 config CLKSRC_NOMADIK_MTU
  51         bool
  52         depends on (ARCH_NOMADIK || ARCH_U8500)
  53         select CLKSRC_MMIO
  54         help
  55           Support for Multi Timer Unit. MTU provides access
  56           to multiple interrupt generating programmable
  57           32-bit free running decrementing counters.
  58
  59 config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
  60         bool
  61         depends on CLKSRC_NOMADIK_MTU
  62         help
  63           Use the Multi Timer Unit as the sched_clock.
  64
  65 config CLKSRC_DBX500_PRCMU
  66         bool "Clocksource PRCMU Timer"
  67         depends on UX500_SOC_DB8500
  68         default y
  69         help
  70           Use the always on PRCMU Timer as clocksource
  71
  72 config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
  73         bool "Clocksource PRCMU Timer sched_clock"
  74         depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
  75         default y
  76         help
  77           Use the always on PRCMU Timer as sched_clock
  78
  79 config CLKSRC_EFM32
  80         bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
  81         depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
  82         select CLKSRC_MMIO
  83         default ARCH_EFM32
  84         help
  85           Support to use the timers of EFM32 SoCs as clock source and clock
  86           event device.
  87
  88 config ARM_ARCH_TIMER
  89         bool
  90         select CLKSRC_OF if OF
  91
  92 config ARM_ARCH_TIMER_EVTSTREAM
  93         bool "Support for ARM architected timer event stream generation"
  94         default y if ARM_ARCH_TIMER
  95         depends on ARM_ARCH_TIMER
  96         help
  97           This option enables support for event stream generation based on
  98           the ARM architected timer. It is used for waking up CPUs executing
  99           the wfe instruction at a frequency represented as a power-of-2
 100           divisor of the clock rate.
 101           The main use of the event stream is wfe-based timeouts of userspace
 102           locking implementations. It might also be useful for imposing timeout
 103           on wfe to safeguard against any programming errors in case an expected
 104           event is not generated.
 105           This must be disabled for hardware validation purposes to detect any
 106           hardware anomalies of missing events.
 107
 108 config ARM_GLOBAL_TIMER
 109         bool
 110         select CLKSRC_OF if OF
 111         help
 112           This options enables support for the ARM global timer unit
 113
 114 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
 115         bool
 116         depends on ARM_GLOBAL_TIMER
 117         default y
 118         help
 119          Use ARM global timer clock source as sched_clock
 120
 121 config CLKSRC_METAG_GENERIC
 122         def_bool y if METAG
 123         help
 124           This option enables support for the Meta per-thread timers.
 125
 126 config CLKSRC_EXYNOS_MCT
 127         def_bool y if ARCH_EXYNOS
 128         help
 129           Support for Multi Core Timer controller on Exynos SoCs.
 130
 131 config CLKSRC_SAMSUNG_PWM
 132         bool
 133         help
 134           This is a new clocksource driver for the PWM timer found in
 135           Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
 136           for all devicetree enabled platforms. This driver will be
 137           needed only on systems that do not have the Exynos MCT available.
 138
 139 config VF_PIT_TIMER
 140         bool
 141         help
 142           Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
 143
 144 config SYS_SUPPORTS_SH_CMT
 145         bool
 146
 147 config SYS_SUPPORTS_SH_MTU2
 148         bool
 149
 150 config SYS_SUPPORTS_SH_TMU
 151         bool
 152
 153 config SYS_SUPPORTS_EM_STI
 154         bool
 155
 156 config SH_TIMER_CMT
 157         bool "Renesas CMT timer driver" if COMPILE_TEST
 158         depends on GENERIC_CLOCKEVENTS
 159         default SYS_SUPPORTS_SH_CMT
 160         help
 161           This enables build of a clocksource and clockevent driver for
 162           the Compare Match Timer (CMT) hardware available in 16/32/48-bit
 163           variants on a wide range of Mobile and Automotive SoCs from Renesas.
 164
 165 config SH_TIMER_MTU2
 166         bool "Renesas MTU2 timer driver" if COMPILE_TEST
 167         depends on GENERIC_CLOCKEVENTS
 168         default SYS_SUPPORTS_SH_MTU2
 169         help
 170           This enables build of a clockevent driver for the Multi-Function
 171           Timer Pulse Unit 2 (TMU2) hardware available on SoCs from Renesas.
 172           This hardware comes with 16 bit-timer registers.
 173
 174 config SH_TIMER_TMU
 175         bool "Renesas TMU timer driver" if COMPILE_TEST
 176         depends on GENERIC_CLOCKEVENTS
 177         default SYS_SUPPORTS_SH_TMU
 178         help
 179           This enables build of a clocksource and clockevent driver for
 180           the 32-bit Timer Unit (TMU) hardware available on a wide range
 181           SoCs from Renesas.
 182
 183 config EM_TIMER_STI
 184         bool "Renesas STI timer driver" if COMPILE_TEST
 185         depends on GENERIC_CLOCKEVENTS
 186         default SYS_SUPPORTS_EM_STI
 187         help
 188           This enables build of a clocksource and clockevent driver for
 189           the 48-bit System Timer (STI) hardware available on a SoCs
 190           such as EMEV2 from former NEC Electronics.
 191
 192 config CLKSRC_QCOM
 193         bool
 194
 195 config CLKSRC_VERSATILE
 196         bool "ARM Versatile (Express) reference platforms clock source"
 197         depends on GENERIC_SCHED_CLOCK
 198         select CLKSRC_OF
 199         default y if MFD_VEXPRESS_SYSREG
 200         help
 201           This option enables clock source based on free running
 202           counter available in the "System Registers" block of
 203           ARM Versatile, RealView and Versatile Express reference
 204           platforms.