Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
1menu "Clock Source drivers"
2
3config CLKSRC_OF
4 bool
5
6config CLKSRC_I8253
7 bool
8
9config CLKEVT_I8253
10 bool
11
12config I8253_LOCK
13 bool
14
15config CLKBLD_I8253
16 def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
17
18config CLKSRC_MMIO
19 bool
20
21config DIGICOLOR_TIMER
22 bool
23
24config DW_APB_TIMER
25 bool
26
27config DW_APB_TIMER_OF
28 bool
29 select DW_APB_TIMER
30 select CLKSRC_OF
31
32config ROCKCHIP_TIMER
33 bool
34 select CLKSRC_OF
35
36config ARMADA_370_XP_TIMER
37 bool
38 select CLKSRC_OF
39
40config MESON6_TIMER
41 bool
42 select CLKSRC_MMIO
43
44config ORION_TIMER
45 select CLKSRC_OF
46 select CLKSRC_MMIO
47 bool
48
49config SUN4I_TIMER
50 select CLKSRC_MMIO
51 bool
52
53config SUN5I_HSTIMER
54 select CLKSRC_MMIO
55 bool
56
57config TEGRA_TIMER
58 bool
59
60config VT8500_TIMER
61 bool
62
63config CADENCE_TTC_TIMER
64 bool
65
66config ASM9260_TIMER
67 bool
68 select CLKSRC_MMIO
69 select CLKSRC_OF
70
71config 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
80config 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
86config 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
93config 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
100config 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
109config CLKSRC_LPC32XX
110 bool
111 select CLKSRC_MMIO
112 select CLKSRC_OF
113
114config 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
119config ARM_ARCH_TIMER
120 bool
121 select CLKSRC_OF if OF
122
123config 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
139config 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
145config 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
151config 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
158config 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
165config ATMEL_PIT
166 select CLKSRC_OF if OF
167 def_bool SOC_AT91SAM9 || SOC_SAMA5
168
169config ATMEL_ST
170 bool
171 select CLKSRC_OF
172 select MFD_SYSCON
173
174config CLKSRC_METAG_GENERIC
175 def_bool y if METAG
176 help
177 This option enables support for the Meta per-thread timers.
178
179config 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
185config 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
193config FSL_FTM_TIMER
194 bool
195 help
196 Support for Freescale FlexTimer Module (FTM) timer.
197
198config VF_PIT_TIMER
199 bool
200 help
201 Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
202
203config SYS_SUPPORTS_SH_CMT
204 bool
205
206config MTK_TIMER
207 select CLKSRC_OF
208 select CLKSRC_MMIO
209 bool
210
211config SYS_SUPPORTS_SH_MTU2
212 bool
213
214config SYS_SUPPORTS_SH_TMU
215 bool
216
217config SYS_SUPPORTS_EM_STI
218 bool
219
220config 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
230config 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
240config 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
250config 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
259config CLKSRC_QCOM
260 bool
261
262config 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
273config CLKSRC_MIPS_GIC
274 bool
275 depends on MIPS_GIC
276 select CLKSRC_OF
277
278config 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
285config H8300_TMR16
286 bool
287
288config H8300_TPU
289 bool
290
291config CLKSRC_IMX_GPT
292 bool "Clocksource using i.MX GPT" if COMPILE_TEST
293 depends on ARM && CLKDEV_LOOKUP
294 select CLKSRC_MMIO
295
296endmenu