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 MESON6_TIMER
  34         bool
  35         select CLKSRC_MMIO
  36
  37 config ORION_TIMER
  38         select CLKSRC_OF
  39         select CLKSRC_MMIO
  40         bool
  41
  42 config SUN4I_TIMER
  43         select CLKSRC_MMIO
  44         bool
  45
  46 config SUN5I_HSTIMER
  47         select CLKSRC_MMIO
  48         bool
  49
  50 config VT8500_TIMER
  51         bool
  52
  53 config CADENCE_TTC_TIMER
  54         bool
  55
  56 config CLKSRC_NOMADIK_MTU
  57         bool
  58         depends on (ARCH_NOMADIK || ARCH_U8500)
  59         select CLKSRC_MMIO
  60         help
  61           Support for Multi Timer Unit. MTU provides access
  62           to multiple interrupt generating programmable
  63           32-bit free running decrementing counters.
  64
  65 config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
  66         bool
  67         depends on CLKSRC_NOMADIK_MTU
  68         help
  69           Use the Multi Timer Unit as the sched_clock.
  70
  71 config CLKSRC_DBX500_PRCMU
  72         bool "Clocksource PRCMU Timer"
  73         depends on UX500_SOC_DB8500
  74         default y
  75         help
  76           Use the always on PRCMU Timer as clocksource
  77
  78 config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
  79         bool "Clocksource PRCMU Timer sched_clock"
  80         depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
  81         default y
  82         help
  83           Use the always on PRCMU Timer as sched_clock
  84
  85 config CLKSRC_EFM32
  86         bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
  87         depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
  88         select CLKSRC_MMIO
  89         default ARCH_EFM32
  90         help
  91           Support to use the timers of EFM32 SoCs as clock source and clock
  92           event device.
  93
  94 config ARM_ARCH_TIMER
  95         bool
  96         select CLKSRC_OF if OF
  97
  98 config ARM_ARCH_TIMER_EVTSTREAM
  99         bool "Support for ARM architected timer event stream generation"
 100         default y if ARM_ARCH_TIMER
 101         depends on ARM_ARCH_TIMER
 102         help
 103           This option enables support for event stream generation based on
 104           the ARM architected timer. It is used for waking up CPUs executing
 105           the wfe instruction at a frequency represented as a power-of-2
 106           divisor of the clock rate.
 107           The main use of the event stream is wfe-based timeouts of userspace
 108           locking implementations. It might also be useful for imposing timeout
 109           on wfe to safeguard against any programming errors in case an expected
 110           event is not generated.
 111           This must be disabled for hardware validation purposes to detect any
 112           hardware anomalies of missing events.
 113
 114 config ARM_GLOBAL_TIMER
 115         bool
 116         select CLKSRC_OF if OF
 117         help
 118           This options enables support for the ARM global timer unit
 119
 120 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
 121         bool
 122         depends on ARM_GLOBAL_TIMER
 123         default y
 124         help
 125          Use ARM global timer clock source as sched_clock
 126
 127 config ATMEL_PIT
 128         select CLKSRC_OF if OF
 129         def_bool SOC_AT91SAM9 || SOC_SAMA5
 130
 131 config CLKSRC_METAG_GENERIC
 132         def_bool y if METAG
 133         help
 134           This option enables support for the Meta per-thread timers.
 135
 136 config CLKSRC_EXYNOS_MCT
 137         def_bool y if ARCH_EXYNOS
 138         depends on !ARM64
 139         help
 140           Support for Multi Core Timer controller on Exynos SoCs.
 141
 142 config CLKSRC_SAMSUNG_PWM
 143         bool
 144         help
 145           This is a new clocksource driver for the PWM timer found in
 146           Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
 147           for all devicetree enabled platforms. This driver will be
 148           needed only on systems that do not have the Exynos MCT available.
 149
 150 config FSL_FTM_TIMER
 151         bool
 152         help
 153           Support for Freescale FlexTimer Module (FTM) timer.
 154
 155 config VF_PIT_TIMER
 156         bool
 157         help
 158           Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
 159
 160 config SYS_SUPPORTS_SH_CMT
 161         bool
 162
 163 config MTK_TIMER
 164         select CLKSRC_OF
 165         select CLKSRC_MMIO
 166         bool
 167
 168 config SYS_SUPPORTS_SH_MTU2
 169         bool
 170
 171 config SYS_SUPPORTS_SH_TMU
 172         bool
 173
 174 config SYS_SUPPORTS_EM_STI
 175         bool
 176
 177 config SH_TIMER_CMT
 178         bool "Renesas CMT timer driver" if COMPILE_TEST
 179         depends on GENERIC_CLOCKEVENTS
 180         default SYS_SUPPORTS_SH_CMT
 181         help
 182           This enables build of a clocksource and clockevent driver for
 183           the Compare Match Timer (CMT) hardware available in 16/32/48-bit
 184           variants on a wide range of Mobile and Automotive SoCs from Renesas.
 185
 186 config SH_TIMER_MTU2
 187         bool "Renesas MTU2 timer driver" if COMPILE_TEST
 188         depends on GENERIC_CLOCKEVENTS
 189         default SYS_SUPPORTS_SH_MTU2
 190         help
 191           This enables build of a clockevent driver for the Multi-Function
 192           Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
 193           This hardware comes with 16 bit-timer registers.
 194
 195 config SH_TIMER_TMU
 196         bool "Renesas TMU timer driver" if COMPILE_TEST
 197         depends on GENERIC_CLOCKEVENTS
 198         default SYS_SUPPORTS_SH_TMU
 199         help
 200           This enables build of a clocksource and clockevent driver for
 201           the 32-bit Timer Unit (TMU) hardware available on a wide range
 202           SoCs from Renesas.
 203
 204 config EM_TIMER_STI
 205         bool "Renesas STI timer driver" if COMPILE_TEST
 206         depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
 207         default SYS_SUPPORTS_EM_STI
 208         help
 209           This enables build of a clocksource and clockevent driver for
 210           the 48-bit System Timer (STI) hardware available on a SoCs
 211           such as EMEV2 from former NEC Electronics.
 212
 213 config CLKSRC_QCOM
 214         bool
 215
 216 config CLKSRC_VERSATILE
 217         bool "ARM Versatile (Express) reference platforms clock source"
 218         depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
 219         select CLKSRC_OF
 220         default y if MFD_VEXPRESS_SYSREG
 221         help
 222           This option enables clock source based on free running
 223           counter available in the "System Registers" block of
 224           ARM Versatile, RealView and Versatile Express reference
 225           platforms.
 226
 227 config CLKSRC_MIPS_GIC
 228         bool
 229         depends on MIPS_GIC
 230         select CLKSRC_OF
 231
 232 endmenu