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Linux/drivers/clocksource/Kconfig

  1 menu "Clock Source drivers"
  2         depends on !ARCH_USES_GETTIMEOFFSET
  3 
  4 config CLKSRC_OF
  5         bool
  6         select CLKSRC_PROBE
  7 
  8 config CLKSRC_ACPI
  9         bool
 10         select CLKSRC_PROBE
 11 
 12 config CLKSRC_PROBE
 13         bool
 14 
 15 config CLKSRC_I8253
 16         bool
 17 
 18 config CLKEVT_I8253
 19         bool
 20 
 21 config I8253_LOCK
 22         bool
 23 
 24 config CLKBLD_I8253
 25         def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
 26 
 27 config CLKSRC_MMIO
 28         bool
 29 
 30 config DIGICOLOR_TIMER
 31         bool
 32 
 33 config DW_APB_TIMER
 34         bool
 35 
 36 config DW_APB_TIMER_OF
 37         bool
 38         select DW_APB_TIMER
 39         select CLKSRC_OF
 40 
 41 config ROCKCHIP_TIMER
 42         bool
 43         select CLKSRC_OF
 44 
 45 config ARMADA_370_XP_TIMER
 46         bool
 47         select CLKSRC_OF
 48 
 49 config MESON6_TIMER
 50         bool
 51         select CLKSRC_MMIO
 52 
 53 config ORION_TIMER
 54         select CLKSRC_OF
 55         select CLKSRC_MMIO
 56         bool
 57 
 58 config SUN4I_TIMER
 59         select CLKSRC_MMIO
 60         bool
 61 
 62 config SUN5I_HSTIMER
 63         select CLKSRC_MMIO
 64         bool
 65 
 66 config TEGRA_TIMER
 67         bool
 68 
 69 config VT8500_TIMER
 70         bool
 71 
 72 config CADENCE_TTC_TIMER
 73         bool
 74 
 75 config ASM9260_TIMER
 76         bool
 77         select CLKSRC_MMIO
 78         select CLKSRC_OF
 79 
 80 config CLKSRC_NOMADIK_MTU
 81         bool
 82         depends on (ARCH_NOMADIK || ARCH_U8500)
 83         select CLKSRC_MMIO
 84         help
 85           Support for Multi Timer Unit. MTU provides access
 86           to multiple interrupt generating programmable
 87           32-bit free running decrementing counters.
 88 
 89 config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
 90         bool
 91         depends on CLKSRC_NOMADIK_MTU
 92         help
 93           Use the Multi Timer Unit as the sched_clock.
 94 
 95 config CLKSRC_DBX500_PRCMU
 96         bool "Clocksource PRCMU Timer"
 97         depends on UX500_SOC_DB8500
 98         default y
 99         help
100           Use the always on PRCMU Timer as clocksource
101 
102 config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
103         bool "Clocksource PRCMU Timer sched_clock"
104         depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
105         default y
106         help
107           Use the always on PRCMU Timer as sched_clock
108 
109 config CLKSRC_EFM32
110         bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
111         depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
112         select CLKSRC_MMIO
113         default ARCH_EFM32
114         help
115           Support to use the timers of EFM32 SoCs as clock source and clock
116           event device.
117 
118 config CLKSRC_LPC32XX
119         bool
120         select CLKSRC_MMIO
121         select CLKSRC_OF
122 
123 config CLKSRC_PISTACHIO
124         bool
125         select CLKSRC_OF
126 
127 config CLKSRC_TI_32K
128         bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST
129         depends on GENERIC_SCHED_CLOCK
130         select CLKSRC_OF if OF
131         help
132           This option enables support for Texas Instruments 32.768 Hz clocksource
133           available on many OMAP-like platforms.
134 
135 config CLKSRC_STM32
136         bool "Clocksource for STM32 SoCs" if !ARCH_STM32
137         depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST)
138         select CLKSRC_MMIO
139 
140 config ARM_ARCH_TIMER
141         bool
142         select CLKSRC_OF if OF
143         select CLKSRC_ACPI if ACPI
144 
145 config ARM_ARCH_TIMER_EVTSTREAM
146         bool "Support for ARM architected timer event stream generation"
147         default y if ARM_ARCH_TIMER
148         depends on ARM_ARCH_TIMER
149         help
150           This option enables support for event stream generation based on
151           the ARM architected timer. It is used for waking up CPUs executing
152           the wfe instruction at a frequency represented as a power-of-2
153           divisor of the clock rate.
154           The main use of the event stream is wfe-based timeouts of userspace
155           locking implementations. It might also be useful for imposing timeout
156           on wfe to safeguard against any programming errors in case an expected
157           event is not generated.
158           This must be disabled for hardware validation purposes to detect any
159           hardware anomalies of missing events.
160 
161 config ARM_GLOBAL_TIMER
162         bool
163         select CLKSRC_OF if OF
164         help
165           This options enables support for the ARM global timer unit
166 
167 config ARM_TIMER_SP804
168         bool "Support for Dual Timer SP804 module"
169         depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP
170         select CLKSRC_MMIO
171         select CLKSRC_OF if OF
172 
173 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
174         bool
175         depends on ARM_GLOBAL_TIMER
176         default y
177         help
178          Use ARM global timer clock source as sched_clock
179 
180 config ARMV7M_SYSTICK
181         bool
182         select CLKSRC_OF if OF
183         select CLKSRC_MMIO
184         help
185           This options enables support for the ARMv7M system timer unit
186 
187 config ATMEL_PIT
188         select CLKSRC_OF if OF
189         def_bool SOC_AT91SAM9 || SOC_SAMA5
190 
191 config ATMEL_ST
192         bool
193         select CLKSRC_OF
194         select MFD_SYSCON
195 
196 config CLKSRC_METAG_GENERIC
197         def_bool y if METAG
198         help
199           This option enables support for the Meta per-thread timers.
200 
201 config CLKSRC_EXYNOS_MCT
202         def_bool y if ARCH_EXYNOS
203         depends on !ARM64
204         help
205           Support for Multi Core Timer controller on Exynos SoCs.
206 
207 config CLKSRC_SAMSUNG_PWM
208         bool
209         help
210           This is a new clocksource driver for the PWM timer found in
211           Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
212           for all devicetree enabled platforms. This driver will be
213           needed only on systems that do not have the Exynos MCT available.
214 
215 config FSL_FTM_TIMER
216         bool
217         help
218           Support for Freescale FlexTimer Module (FTM) timer.
219 
220 config VF_PIT_TIMER
221         bool
222         help
223           Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
224 
225 config SYS_SUPPORTS_SH_CMT
226         bool
227 
228 config MTK_TIMER
229         select CLKSRC_OF
230         select CLKSRC_MMIO
231         bool
232 
233 config SYS_SUPPORTS_SH_MTU2
234         bool
235 
236 config SYS_SUPPORTS_SH_TMU
237         bool
238 
239 config SYS_SUPPORTS_EM_STI
240         bool
241 
242 config SH_TIMER_CMT
243         bool "Renesas CMT timer driver" if COMPILE_TEST
244         depends on GENERIC_CLOCKEVENTS
245         depends on HAS_IOMEM
246         default SYS_SUPPORTS_SH_CMT
247         help
248           This enables build of a clocksource and clockevent driver for
249           the Compare Match Timer (CMT) hardware available in 16/32/48-bit
250           variants on a wide range of Mobile and Automotive SoCs from Renesas.
251 
252 config SH_TIMER_MTU2
253         bool "Renesas MTU2 timer driver" if COMPILE_TEST
254         depends on GENERIC_CLOCKEVENTS
255         depends on HAS_IOMEM
256         default SYS_SUPPORTS_SH_MTU2
257         help
258           This enables build of a clockevent driver for the Multi-Function
259           Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas.
260           This hardware comes with 16 bit-timer registers.
261 
262 config SH_TIMER_TMU
263         bool "Renesas TMU timer driver" if COMPILE_TEST
264         depends on GENERIC_CLOCKEVENTS
265         depends on HAS_IOMEM
266         default SYS_SUPPORTS_SH_TMU
267         help
268           This enables build of a clocksource and clockevent driver for
269           the 32-bit Timer Unit (TMU) hardware available on a wide range
270           SoCs from Renesas.
271 
272 config EM_TIMER_STI
273         bool "Renesas STI timer driver" if COMPILE_TEST
274         depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
275         default SYS_SUPPORTS_EM_STI
276         help
277           This enables build of a clocksource and clockevent driver for
278           the 48-bit System Timer (STI) hardware available on a SoCs
279           such as EMEV2 from former NEC Electronics.
280 
281 config CLKSRC_QCOM
282         bool
283 
284 config CLKSRC_VERSATILE
285         bool "ARM Versatile (Express) reference platforms clock source"
286         depends on PLAT_VERSATILE && GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET
287         select CLKSRC_OF
288         default y if MFD_VEXPRESS_SYSREG
289         help
290           This option enables clock source based on free running
291           counter available in the "System Registers" block of
292           ARM Versatile, RealView and Versatile Express reference
293           platforms.
294 
295 config CLKSRC_MIPS_GIC
296         bool
297         depends on MIPS_GIC
298         select CLKSRC_OF
299 
300 config CLKSRC_TANGO_XTAL
301         bool
302         select CLKSRC_OF
303 
304 config CLKSRC_PXA
305         def_bool y if ARCH_PXA || ARCH_SA1100
306         select CLKSRC_OF if OF
307         help
308           This enables OST0 support available on PXA and SA-11x0
309           platforms.
310 
311 config H8300_TMR16
312         bool
313 
314 config H8300_TPU
315         bool
316 
317 config CLKSRC_IMX_GPT
318         bool "Clocksource using i.MX GPT" if COMPILE_TEST
319         depends on ARM && CLKDEV_LOOKUP
320         select CLKSRC_MMIO
321 
322 config CLKSRC_ST_LPC
323         bool
324         depends on ARCH_STI
325         select CLKSRC_OF if OF
326         help
327           Enable this option to use the Low Power controller timer
328           as clocksource.
329 
330 endmenu

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