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)
81 Support to use the timers of EFM32 SoCs as clock source and clock
86 select CLKSRC_OF if OF
88 config ARM_ARCH_TIMER_EVTSTREAM
89 bool "Support for ARM architected timer event stream generation"
90 default y if ARM_ARCH_TIMER
91 depends on ARM_ARCH_TIMER
93 This option enables support for event stream generation based on
94 the ARM architected timer. It is used for waking up CPUs executing
95 the wfe instruction at a frequency represented as a power-of-2
96 divisor of the clock rate.
97 The main use of the event stream is wfe-based timeouts of userspace
98 locking implementations. It might also be useful for imposing timeout
99 on wfe to safeguard against any programming errors in case an expected
100 event is not generated.
101 This must be disabled for hardware validation purposes to detect any
102 hardware anomalies of missing events.
104 config ARM_GLOBAL_TIMER
106 select CLKSRC_OF if OF
108 This options enables support for the ARM global timer unit
110 config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
112 depends on ARM_GLOBAL_TIMER
115 Use ARM global timer clock source as sched_clock
117 config CLKSRC_METAG_GENERIC
120 This option enables support for the Meta per-thread timers.
122 config CLKSRC_EXYNOS_MCT
123 def_bool y if ARCH_EXYNOS
125 Support for Multi Core Timer controller on Exynos SoCs.
127 config CLKSRC_SAMSUNG_PWM
130 This is a new clocksource driver for the PWM timer found in
131 Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver
132 for all devicetree enabled platforms. This driver will be
133 needed only on systems that do not have the Exynos MCT available.
138 Support for Period Interrupt Timer on Freescale Vybrid Family SoCs.