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drivers
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clocksource
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Kconfig

Kconfig 5.4 KB
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  1. menu "Clock Source drivers"
    2. 

  2. 

  3. config CLKSRC_OF
    4. 

  4. 	bool
    5. 

  5. 

  6. config CLKSRC_I8253
    7. 

  7. 	bool
    8. 

  8. 

  9. config CLKEVT_I8253
    10. 

  10. 	bool
    11. 

  11. 

  12. config I8253_LOCK
    13. 

  13. 	bool
    14. 

  14. 

  15. config CLKBLD_I8253
    16. 

  16. 	def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
    17. 

  17. 

  18. config CLKSRC_MMIO
    19. 

  19. 	bool
    20. 

  20. 

  21. config DW_APB_TIMER
    22. 

  22. 	bool
    23. 

  23. 

  24. config DW_APB_TIMER_OF
    25. 

  25. 	bool
    26. 

  26. 	select DW_APB_TIMER
    27. 

  27. 	select CLKSRC_OF
    28. 

  28. 

  29. config ARMADA_370_XP_TIMER
    30. 

  30. 	bool
    31. 

  31. 	select CLKSRC_OF
    32. 

  32. 

  33. config MESON6_TIMER
    34. 

  34. 	bool
    35. 

  35. 

  36. config ORION_TIMER
    37. 

  37. 	select CLKSRC_OF
    38. 

  38. 	select CLKSRC_MMIO
    39. 

  39. 	bool
    40. 

  40. 

  41. config SUN4I_TIMER
    42. 

  42. 	select CLKSRC_MMIO
    43. 

  43. 	bool
    44. 

  44. 

  45. config SUN5I_HSTIMER
    46. 

  46. 	select CLKSRC_MMIO
    47. 

  47. 	bool
    48. 

  48. 

  49. config VT8500_TIMER
    50. 

  50. 	bool
    51. 

  51. 

  52. config CADENCE_TTC_TIMER
    53. 

  53. 	bool
    54. 

  54. 

  55. config CLKSRC_NOMADIK_MTU
    56. 

  56. 	bool
    57. 

  57. 	depends on (ARCH_NOMADIK || ARCH_U8500)
    58. 

  58. 	select CLKSRC_MMIO
    59. 

  59. 	help
    60. 

  60. 	  Support for Multi Timer Unit. MTU provides access
    61. 

  61. 	  to multiple interrupt generating programmable
    62. 

  62. 	  32-bit free running decrementing counters.
    63. 

  63. 

  64. config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
    65. 

  65. 	bool
    66. 

  66. 	depends on CLKSRC_NOMADIK_MTU
    67. 

  67. 	help
    68. 

  68. 	  Use the Multi Timer Unit as the sched_clock.
    69. 

  69. 

  70. config CLKSRC_DBX500_PRCMU
    71. 

  71. 	bool "Clocksource PRCMU Timer"
    72. 

  72. 	depends on UX500_SOC_DB8500
    73. 

  73. 	default y
    74. 

  74. 	help
    75. 

  75. 	  Use the always on PRCMU Timer as clocksource
    76. 

  76. 

  77. config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
    78. 

  78. 	bool "Clocksource PRCMU Timer sched_clock"
    79. 

  79. 	depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
    80. 

  80. 	default y
    81. 

  81. 	help
    82. 

  82. 	  Use the always on PRCMU Timer as sched_clock
    83. 

  83. 

  84. config CLKSRC_EFM32
    85. 

  85. 	bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
    86. 

  86. 	depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
    87. 

  87. 	select CLKSRC_MMIO
    88. 

  88. 	default ARCH_EFM32
    89. 

  89. 	help
    90. 

  90. 	  Support to use the timers of EFM32 SoCs as clock source and clock
    91. 

  91. 	  event device.
    92. 

  92. 

  93. config ARM_ARCH_TIMER
    94. 

  94. 	bool
    95. 

  95. 	select CLKSRC_OF if OF
    96. 

  96. 

  97. config ARM_ARCH_TIMER_EVTSTREAM
    98. 

  98. 	bool "Support for ARM architected timer event stream generation"
    99. 

  99. 	default y if ARM_ARCH_TIMER
    100. 

  100. 	depends on ARM_ARCH_TIMER
    101. 

  101. 	help
    102. 

  102. 	  This option enables support for event stream generation based on
    103. 

  103. 	  the ARM architected timer. It is used for waking up CPUs executing
    104. 

  104. 	  the wfe instruction at a frequency represented as a power-of-2
    105. 

  105. 	  divisor of the clock rate.
    106. 

  106. 	  The main use of the event stream is wfe-based timeouts of userspace
    107. 

  107. 	  locking implementations. It might also be useful for imposing timeout
    108. 

  108. 	  on wfe to safeguard against any programming errors in case an expected
    109. 

  109. 	  event is not generated.
    110. 

  110. 	  This must be disabled for hardware validation purposes to detect any
    111. 

  111. 	  hardware anomalies of missing events.
    112. 

  112. 

  113. config ARM_GLOBAL_TIMER
    114. 

  114. 	bool
    115. 

  115. 	select CLKSRC_OF if OF
    116. 

  116. 	help
    117. 

  117. 	  This options enables support for the ARM global timer unit
    118. 

  118. 

  119. config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
    120. 

  120. 	bool
    121. 

  121. 	depends on ARM_GLOBAL_TIMER
    122. 

  122. 	default y
    123. 

  123. 	help
    124. 

  124. 	 Use ARM global timer clock source as sched_clock
    125. 

  125. 

  126. config ATMEL_PIT
    127. 

  127. 	select CLKSRC_OF if OF
    128. 

  128. 	def_bool SOC_AT91SAM9 || SOC_SAMA5
    129. 

  129. 

  130. config CLKSRC_METAG_GENERIC
    131. 

  131. 	def_bool y if METAG
    132. 

  132. 	help
    133. 

  133. 	  This option enables support for the Meta per-thread timers.
    134. 

  134. 

  135. config CLKSRC_EXYNOS_MCT
    136. 

  136. 	def_bool y if ARCH_EXYNOS
    137. 

  137. 	depends on !ARM64
    138. 

  138. 	help
    139. 

  139. 	  Support for Multi Core Timer controller on Exynos SoCs.
    140. 

  140. 

  141. config CLKSRC_SAMSUNG_PWM
    142. 

  142. 	bool
    143. 

  143. 	help
    144. 

  144. 	  This is a new clocksource driver for the PWM timer found in
    145. 

  145. 	  Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
    146. 

  146. 	  for all devicetree enabled platforms. This driver will be
    147. 

  147. 	  needed only on systems that do not have the Exynos MCT available.
    148. 

  148. 

  149. config FSL_FTM_TIMER
    150. 

  150. 	bool
    151. 

  151. 	help
    152. 

  152. 	  Support for Freescale FlexTimer Module (FTM) timer.
    153. 

  153. 

  154. config VF_PIT_TIMER
    155. 

  155. 	bool
    156. 

  156. 	help
    157. 

  157. 	  Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
    158. 

  158. 

  159. config SYS_SUPPORTS_SH_CMT
    160. 

  160.         bool
    161. 

  161. 

  162. config MTK_TIMER
    163. 

  163. 	select CLKSRC_OF
    164. 

  164. 	select CLKSRC_MMIO
    165. 

  165. 	bool
    166. 

  166. 

  167. config SYS_SUPPORTS_SH_MTU2
    168. 

  168.         bool
    169. 

  169. 

  170. config SYS_SUPPORTS_SH_TMU
    171. 

  171.         bool
    172. 

  172. 

  173. config SYS_SUPPORTS_EM_STI
    174. 

  174.         bool
    175. 

  175. 

  176. config SH_TIMER_CMT
    177. 

  177. 	bool "Renesas CMT timer driver" if COMPILE_TEST
    178. 

  178. 	depends on GENERIC_CLOCKEVENTS
    179. 

  179. 	default SYS_SUPPORTS_SH_CMT
    180. 

  180. 	help
    181. 

  181. 	  This enables build of a clocksource and clockevent driver for
    182. 

  182. 	  the Compare Match Timer (CMT) hardware available in 16/32/48-bit
    183. 

  183. 	  variants on a wide range of Mobile and Automotive SoCs from Renesas.
    184. 

  184. 

  185. config SH_TIMER_MTU2
    186. 

  186. 	bool "Renesas MTU2 timer driver" if COMPILE_TEST
    187. 

  187. 	depends on GENERIC_CLOCKEVENTS
    188. 

  188. 	default SYS_SUPPORTS_SH_MTU2
    189. 

  189. 	help
    190. 

  190. 	  This enables build of a clockevent driver for the Multi-Function
    191. 

  191. 	  Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
    192. 

  192. 	  This hardware comes with 16 bit-timer registers.
    193. 

  193. 

  194. config SH_TIMER_TMU
    195. 

  195. 	bool "Renesas TMU timer driver" if COMPILE_TEST
    196. 

  196. 	depends on GENERIC_CLOCKEVENTS
    197. 

  197. 	default SYS_SUPPORTS_SH_TMU
    198. 

  198. 	help
    199. 

  199. 	  This enables build of a clocksource and clockevent driver for
    200. 

  200. 	  the 32-bit Timer Unit (TMU) hardware available on a wide range
    201. 

  201. 	  SoCs from Renesas.
    202. 

  202. 

  203. config EM_TIMER_STI
    204. 

  204. 	bool "Renesas STI timer driver" if COMPILE_TEST
    205. 

  205. 	depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
    206. 

  206. 	default SYS_SUPPORTS_EM_STI
    207. 

  207. 	help
    208. 

  208. 	  This enables build of a clocksource and clockevent driver for
    209. 

  209. 	  the 48-bit System Timer (STI) hardware available on a SoCs
    210. 

  210. 	  such as EMEV2 from former NEC Electronics.
    211. 

  211. 

  212. config CLKSRC_QCOM
    213. 

  213. 	bool
    214. 

  214. 

  215. config CLKSRC_VERSATILE
    216. 

  216. 	bool "ARM Versatile (Express) reference platforms clock source"
    217. 

  217. 	depends on GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
    218. 

  218. 	select CLKSRC_OF
    219. 

  219. 	default y if MFD_VEXPRESS_SYSREG
    220. 

  220. 	help
    221. 

  221. 	  This option enables clock source based on free running
    222. 

  222. 	  counter available in the "System Registers" block of
    223. 

  223. 	  ARM Versatile, RealView and Versatile Express reference
    224. 

  224. 	  platforms.
    225. 

  225. 

  226. endmenu
    227.