14 def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK
22 config DW_APB_TIMER_OF
27 config ARMADA_370_XP_TIMER
43 config CADENCE_TTC_TIMER
46 config CLKSRC_NOMADIK_MTU
48 depends on (ARCH_NOMADIK || ARCH_U8500)
51 Support for Multi Timer Unit. MTU provides access
52 to multiple interrupt generating programmable
53 32-bit free running decrementing counters.
55 config CLKSRC_NOMADIK_MTU_SCHED_CLOCK
57 depends on CLKSRC_NOMADIK_MTU
59 Use the Multi Timer Unit as the sched_clock.
61 config CLKSRC_DBX500_PRCMU
62 bool "Clocksource PRCMU Timer"
63 depends on UX500_SOC_DB8500
66 Use the always on PRCMU Timer as clocksource
68 config CLKSRC_DBX500_PRCMU_SCHED_CLOCK
69 bool "Clocksource PRCMU Timer sched_clock"
70 depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK)
73 Use the always on PRCMU Timer as sched_clock
76 bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32
77 depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
80 Support to use the timers of EFM32 SoCs as clock source and clock
85 select CLKSRC_OF if OF
87 config ARM_ARCH_TIMER_EVTSTREAM
88 bool "Support for ARM architected timer event stream generation"
89 default y if ARM_ARCH_TIMER
90 depends on ARM_ARCH_TIMER
92 This option enables support for event stream generation based on
93 the ARM architected timer. It is used for waking up CPUs executing
94 the wfe instruction at a frequency represented as a power-of-2
95 divisor of the clock rate.
96 The main use of the event stream is wfe-based timeouts of userspace
97 locking implementations. It might also be useful for imposing timeout
98 on wfe to safeguard against any programming errors in case an expected
99 event is not generated.
100 This must be disabled for hardware validation purposes to detect any
101 hardware anomalies of missing events.
103 config ARM_GLOBAL_TIMER
105 select CLKSRC_OF if OF
107 This options enables support for the ARM global timer unit
109 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
111 depends on ARM_GLOBAL_TIMER
114 Use ARM global timer clock source as sched_clock
116 config CLKSRC_METAG_GENERIC
119 This option enables support for the Meta per-thread timers.
121 config CLKSRC_EXYNOS_MCT
122 def_bool y if ARCH_EXYNOS
124 Support for Multi Core Timer controller on Exynos SoCs.
126 config CLKSRC_SAMSUNG_PWM
129 This is a new clocksource driver for the PWM timer found in
130 Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
131 for all devicetree enabled platforms. This driver will be
132 needed only on systems that do not have the Exynos MCT available.
137 Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.