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 194