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 DW_APB_TIMER
  22         bool
  23
  24 config DW_APB_TIMER_OF
  25         bool
  26         select DW_APB_TIMER
  27         select CLKSRC_OF
  28
  29 config ARMADA_370_XP_TIMER
  30         bool
  31         select CLKSRC_OF
  32
  33 config ORION_TIMER
  34         select CLKSRC_OF
  35         select CLKSRC_MMIO
  36         bool
  37
  38 config SUN4I_TIMER
  39         select CLKSRC_MMIO
  40         bool
  41
  42 config SUN5I_HSTIMER
  43         select CLKSRC_MMIO
  44         bool
  45
  46 config VT8500_TIMER
  47         bool
  48
  49 config CADENCE_TTC_TIMER
  50         bool
  51
  52 config CLKSRC_NOMADIK_MTU
  53         bool
  54         depends on (ARCH_NOMADIK || ARCH_U8500)
  55         select CLKSRC_MMIO
  56         help
  57           Support for Multi Timer Unit. MTU provides access
  58           to multiple interrupt generating programmable
  59           32-bit free running decrementing counters.
  60
  61 config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
  62         bool
  63         depends on CLKSRC_NOMADIK_MTU
  64         help
  65           Use the Multi Timer Unit as the sched_clock.
  66
  67 config CLKSRC_DBX500_PRCMU
  68         bool "Clocksource PRCMU Timer"
  69         depends on UX500_SOC_DB8500
  70         default y
  71         help
  72           Use the always on PRCMU Timer as clocksource
  73
  74 config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
  75         bool "Clocksource PRCMU Timer sched_clock"
  76         depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
  77         default y
  78         help
  79           Use the always on PRCMU Timer as sched_clock
  80
  81 config CLKSRC_EFM32
  82         bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
  83         depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
  84         select CLKSRC_MMIO
  85         default ARCH_EFM32
  86         help
  87           Support to use the timers of EFM32 SoCs as clock source and clock
  88           event device.
  89
  90 config ARM_ARCH_TIMER
  91         bool
  92         select CLKSRC_OF if OF
  93
  94 config ARM_ARCH_TIMER_EVTSTREAM
  95         bool "Support for ARM architected timer event stream generation"
  96         default y if ARM_ARCH_TIMER
  97         depends on ARM_ARCH_TIMER
  98         help
  99           This option enables support for event stream generation based on
 100           the ARM architected timer. It is used for waking up CPUs executing
 101           the wfe instruction at a frequency represented as a power-of-2
 102           divisor of the clock rate.
 103           The main use of the event stream is wfe-based timeouts of userspace
 104           locking implementations. It might also be useful for imposing timeout
 105           on wfe to safeguard against any programming errors in case an expected
 106           event is not generated.
 107           This must be disabled for hardware validation purposes to detect any
 108           hardware anomalies of missing events.
 109
 110 config ARM_GLOBAL_TIMER
 111         bool
 112         select CLKSRC_OF if OF
 113         help
 114           This options enables support for the ARM global timer unit
 115
 116 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
 117         bool
 118         depends on ARM_GLOBAL_TIMER
 119         default y
 120         help
 121          Use ARM global timer clock source as sched_clock
 122
 123 config CLKSRC_METAG_GENERIC
 124         def_bool y if METAG
 125         help
 126           This option enables support for the Meta per-thread timers.
 127
 128 config CLKSRC_EXYNOS_MCT
 129         def_bool y if ARCH_EXYNOS
 130         depends on !ARM64
 131         help
 132           Support for Multi Core Timer controller on Exynos SoCs.
 133
 134 config CLKSRC_SAMSUNG_PWM
 135         bool
 136         help
 137           This is a new clocksource driver for the PWM timer found in
 138           Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
 139           for all devicetree enabled platforms. This driver will be
 140           needed only on systems that do not have the Exynos MCT available.
 141
 142 config FSL_FTM_TIMER
 143         bool
 144         help
 145           Support for Freescale FlexTimer Module (FTM) timer.
 146
 147 config VF_PIT_TIMER
 148         bool
 149         help
 150           Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
 151
 152 config SYS_SUPPORTS_SH_CMT
 153         bool
 154
 155 config MTK_TIMER
 156         select CLKSRC_OF
 157         select CLKSRC_MMIO
 158         bool
 159
 160 config SYS_SUPPORTS_SH_MTU2
 161         bool
 162
 163 config SYS_SUPPORTS_SH_TMU
 164         bool
 165
 166 config SYS_SUPPORTS_EM_STI
 167         bool
 168
 169 config SH_TIMER_CMT
 170         bool "Renesas CMT timer driver" if COMPILE_TEST
 171         depends on GENERIC_CLOCKEVENTS
 172         default SYS_SUPPORTS_SH_CMT
 173         help
 174           This enables build of a clocksource and clockevent driver for
 175           the Compare Match Timer (CMT) hardware available in 16/32/48-bit
 176           variants on a wide range of Mobile and Automotive SoCs from Renesas.
 177
 178 config SH_TIMER_MTU2
 179         bool "Renesas MTU2 timer driver" if COMPILE_TEST
 180         depends on GENERIC_CLOCKEVENTS
 181         default SYS_SUPPORTS_SH_MTU2
 182         help
 183           This enables build of a clockevent driver for the Multi-Function
 184           Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
 185           This hardware comes with 16 bit-timer registers.
 186
 187 config SH_TIMER_TMU
 188         bool "Renesas TMU timer driver" if COMPILE_TEST
 189         depends on GENERIC_CLOCKEVENTS
 190         default SYS_SUPPORTS_SH_TMU
 191         help
 192           This enables build of a clocksource and clockevent driver for
 193           the 32-bit Timer Unit (TMU) hardware available on a wide range
 194           SoCs from Renesas.
 195
 196 config EM_TIMER_STI
 197         bool "Renesas STI timer driver" if COMPILE_TEST
 198         depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
 199         default SYS_SUPPORTS_EM_STI
 200         help
 201           This enables build of a clocksource and clockevent driver for
 202           the 48-bit System Timer (STI) hardware available on a SoCs
 203           such as EMEV2 from former NEC Electronics.
 204
 205 config CLKSRC_QCOM
 206         bool
 207
 208 config CLKSRC_VERSATILE
 209         bool "ARM Versatile (Express) reference platforms clock source"
 210         depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
 211         select CLKSRC_OF
 212         default y if MFD_VEXPRESS_SYSREG
 213         help
 214           This option enables clock source based on free running
 215           counter available in the "System Registers" block of
 216           ARM Versatile, RealView and Versatile Express reference
 217           platforms.
 218
 219 endmenu