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

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