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 VT8500_TIMER 41 bool 42 43config CADENCE_TTC_TIMER 44 bool 45 46config CLKSRC_NOMADIK_MTU 47 bool 48 depends on (ARCH_NOMADIK || ARCH_U8500) 49 select CLKSRC_MMIO 50 help 51 Support for Multi Timer Unit. MTU provides access 52 to multiple interrupt generating programmable 53 32-bit free running decrementing counters. 54 55config CLKSRC_NOMADIK_MTU_SCHED_CLOCK 56 bool 57 depends on CLKSRC_NOMADIK_MTU 58 help 59 Use the Multi Timer Unit as the sched_clock. 60 61config CLKSRC_DBX500_PRCMU 62 bool "Clocksource PRCMU Timer" 63 depends on UX500_SOC_DB8500 64 default y 65 help 66 Use the always on PRCMU Timer as clocksource 67 68config CLKSRC_DBX500_PRCMU_SCHED_CLOCK 69 bool "Clocksource PRCMU Timer sched_clock" 70 depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK) 71 default y 72 help 73 Use the always on PRCMU Timer as sched_clock 74 75config CLKSRC_EFM32 76 bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32 77 depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST) 78 default ARCH_EFM32 79 help 80 Support to use the timers of EFM32 SoCs as clock source and clock 81 event device. 82 83config ARM_ARCH_TIMER 84 bool 85 select CLKSRC_OF if OF 86 87config 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 91 help 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. 102 103config ARM_GLOBAL_TIMER 104 bool 105 select CLKSRC_OF if OF 106 help 107 This options enables support for the ARM global timer unit 108 109config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK 110 bool 111 depends on ARM_GLOBAL_TIMER 112 default y 113 help 114 Use ARM global timer clock source as sched_clock 115 116config CLKSRC_METAG_GENERIC 117 def_bool y if METAG 118 help 119 This option enables support for the Meta per-thread timers. 120 121config CLKSRC_EXYNOS_MCT 122 def_bool y if ARCH_EXYNOS 123 help 124 Support for Multi Core Timer controller on Exynos SoCs. 125 126config CLKSRC_SAMSUNG_PWM 127 bool 128 help 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. 133 134config VF_PIT_TIMER 135 bool 136 help 137 Support for Period Interrupt Timer on Freescale Vybrid Family SoCs. 138