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 VT8500_TIMER
  41         bool
  42
  43 config CADENCE_TTC_TIMER
  44         bool
  45
  46 config CLKSRC_NOMADIK_MTU
  47         bool
  48         depends on (ARCH_NOMADIK || ARCH_U8500)
  49         select CLKSRC_MMIO
  50         help
  51           Support for Multi Timer Unit. MTU provides access
  52           to multiple interrupt generating programmable
  53           32-bit free running decrementing counters.
  54
  55 config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
  56         bool
  57         depends on CLKSRC_NOMADIK_MTU
  58         help
  59           Use the Multi Timer Unit as the sched_clock.
  60
  61 config CLKSRC_DBX500_PRCMU
  62         bool "Clocksource PRCMU Timer"
  63         depends on UX500_SOC_DB8500
  64         default y
  65         help
  66           Use the always on PRCMU Timer as clocksource
  67
  68 config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
  69         bool "Clocksource PRCMU Timer sched_clock"
  70         depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
  71         default y
  72         help
  73           Use the always on PRCMU Timer as sched_clock
  74
  75 config CLKSRC_EFM32
  76         bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
  77         depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
  78         default ARCH_EFM32
  79         help
  80           Support to use the timers of EFM32 SoCs as clock source and clock
  81           event device.
  82
  83 config ARM_ARCH_TIMER
  84         bool
  85         select CLKSRC_OF if OF
  86
  87 config ARM_ARCH_TIMER_EVTSTREAM
  88         bool "Support for ARM architected timer event stream generation"
  89         default y if ARM_ARCH_TIMER
  90         depends on ARM_ARCH_TIMER
  91         help
  92           This option enables support for event stream generation based on
  93           the ARM architected timer. It is used for waking up CPUs executing
  94           the wfe instruction at a frequency represented as a power-of-2
  95           divisor of the clock rate.
  96           The main use of the event stream is wfe-based timeouts of userspace
  97           locking implementations. It might also be useful for imposing timeout
  98           on wfe to safeguard against any programming errors in case an expected
  99           event is not generated.
 100           This must be disabled for hardware validation purposes to detect any
 101           hardware anomalies of missing events.
 102
 103 config ARM_GLOBAL_TIMER
 104         bool
 105         select CLKSRC_OF if OF
 106         help
 107           This options enables support for the ARM global timer unit
 108
 109 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
 110         bool
 111         depends on ARM_GLOBAL_TIMER
 112         default y
 113         help
 114          Use ARM global timer clock source as sched_clock
 115
 116 config CLKSRC_METAG_GENERIC
 117         def_bool y if METAG
 118         help
 119           This option enables support for the Meta per-thread timers.
 120
 121 config CLKSRC_EXYNOS_MCT
 122         def_bool y if ARCH_EXYNOS
 123         help
 124           Support for Multi Core Timer controller on Exynos SoCs.
 125
 126 config CLKSRC_SAMSUNG_PWM
 127         bool
 128         help
 129           This is a new clocksource driver for the PWM timer found in
 130           Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
 131           for all devicetree enabled platforms. This driver will be
 132           needed only on systems that do not have the Exynos MCT available.
 133
 134 config VF_PIT_TIMER
 135         bool
 136         help
 137           Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.