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1config CLKSRC_I8253
2 bool
3
4config CLKEVT_I8253
5 bool
6
7config I8253_LOCK
8 bool
9
10config CLKBLD_I8253
11 def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
12
13config CLKSRC_MMIO
14 bool
15
16config DW_APB_TIMER
17 bool
1config CLKSRC_OF
2 bool
3
4config CLKSRC_I8253
5 bool
6
7config CLKEVT_I8253
8 bool
9
10config I8253_LOCK
11 bool
12
13config CLKBLD_I8253
14 def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
15
16config CLKSRC_MMIO
17 bool
18
19config DW_APB_TIMER
20 bool
21
22config DW_APB_TIMER_OF
23 bool
24 select DW_APB_TIMER
25 select CLKSRC_OF
26
27config ARMADA_370_XP_TIMER
28 bool
29 select CLKSRC_OF
30
31config ORION_TIMER
32 select CLKSRC_OF
33 select CLKSRC_MMIO
34 bool
35
36config SUN4I_TIMER
37 select CLKSRC_MMIO
38 bool
39
40config SUN5I_HSTIMER
41 select CLKSRC_MMIO
42 bool
43
44config VT8500_TIMER
45 bool
46
47config CADENCE_TTC_TIMER
48 bool
49
50config CLKSRC_NOMADIK_MTU
51 bool
52 depends on (ARCH_NOMADIK || ARCH_U8500)
53 select CLKSRC_MMIO
54 help
55 Support for Multi Timer Unit. MTU provides access
56 to multiple interrupt generating programmable
57 32-bit free running decrementing counters.
58
59config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
60 bool
61 depends on CLKSRC_NOMADIK_MTU
62 help
63 Use the Multi Timer Unit as the sched_clock.
64
65config CLKSRC_DBX500_PRCMU
66 bool "Clocksource PRCMU Timer"
67 depends on UX500_SOC_DB8500
68 default y
69 help
70 Use the always on PRCMU Timer as clocksource
71
72config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
73 bool "Clocksource PRCMU Timer sched_clock"
74 depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
75 default y
76 help
77 Use the always on PRCMU Timer as sched_clock
78
79config CLKSRC_EFM32
80 bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
81 depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
82 select CLKSRC_MMIO
83 default ARCH_EFM32
84 help
85 Support to use the timers of EFM32 SoCs as clock source and clock
86 event device.
87
88config ARM_ARCH_TIMER
89 bool
90 select CLKSRC_OF if OF
91
92config ARM_ARCH_TIMER_EVTSTREAM
93 bool "Support for ARM architected timer event stream generation"
94 default y if ARM_ARCH_TIMER
95 depends on ARM_ARCH_TIMER
96 help
97 This option enables support for event stream generation based on
98 the ARM architected timer. It is used for waking up CPUs executing
99 the wfe instruction at a frequency represented as a power-of-2
100 divisor of the clock rate.
101 The main use of the event stream is wfe-based timeouts of userspace
102 locking implementations. It might also be useful for imposing timeout
103 on wfe to safeguard against any programming errors in case an expected
104 event is not generated.
105 This must be disabled for hardware validation purposes to detect any
106 hardware anomalies of missing events.
107
108config ARM_GLOBAL_TIMER
109 bool
110 select CLKSRC_OF if OF
111 help
112 This options enables support for the ARM global timer unit
113
114config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
115 bool
116 depends on ARM_GLOBAL_TIMER
117 default y
118 help
119 Use ARM global timer clock source as sched_clock
120
121config CLKSRC_METAG_GENERIC
122 def_bool y if METAG
123 help
124 This option enables support for the Meta per-thread timers.
125
126config CLKSRC_EXYNOS_MCT
127 def_bool y if ARCH_EXYNOS
128 help
129 Support for Multi Core Timer controller on Exynos SoCs.
130
131config CLKSRC_SAMSUNG_PWM
132 bool
133 help
134 This is a new clocksource driver for the PWM timer found in
135 Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
136 for all devicetree enabled platforms. This driver will be
137 needed only on systems that do not have the Exynos MCT available.
138
139config VF_PIT_TIMER
140 bool
141 help
142 Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.
143
144config SYS_SUPPORTS_SH_CMT
145 bool
146
147config SYS_SUPPORTS_SH_MTU2
148 bool
149
150config SYS_SUPPORTS_SH_TMU
151 bool
152
153config SYS_SUPPORTS_EM_STI
154 bool
155
156config SH_TIMER_CMT
157 bool "Renesas CMT timer driver" if COMPILE_TEST
158 depends on GENERIC_CLOCKEVENTS
159 default SYS_SUPPORTS_SH_CMT
160 help
161 This enables build of a clocksource and clockevent driver for
162 the Compare Match Timer (CMT) hardware available in 16/32/48-bit
163 variants on a wide range of Mobile and Automotive SoCs from Renesas.
164
165config SH_TIMER_MTU2
166 bool "Renesas MTU2 timer driver" if COMPILE_TEST
167 depends on GENERIC_CLOCKEVENTS
168 default SYS_SUPPORTS_SH_MTU2
169 help
170 This enables build of a clockevent driver for the Multi-Function
171 Timer Pulse Unit 2 (TMU2) hardware available on SoCs from Renesas.
172 This hardware comes with 16 bit-timer registers.
173
174config SH_TIMER_TMU
175 bool "Renesas TMU timer driver" if COMPILE_TEST
176 depends on GENERIC_CLOCKEVENTS
177 default SYS_SUPPORTS_SH_TMU
178 help
179 This enables build of a clocksource and clockevent driver for
180 the 32-bit Timer Unit (TMU) hardware available on a wide range
181 SoCs from Renesas.
182
183config EM_TIMER_STI
184 bool "Renesas STI timer driver" if COMPILE_TEST
185 depends on GENERIC_CLOCKEVENTS
186 default SYS_SUPPORTS_EM_STI
187 help
188 This enables build of a clocksource and clockevent driver for
189 the 48-bit System Timer (STI) hardware available on a SoCs
190 such as EMEV2 from former NEC Electronics.
191
192config CLKSRC_QCOM
193 bool