1menu "Clock Source drivers" 2 3config CLKSRC_OF 4 bool 5 select CLKSRC_PROBE 6 7config CLKSRC_ACPI 8 bool 9 select CLKSRC_PROBE 10 11config CLKSRC_PROBE 12 bool 13 14config CLKSRC_I8253 15 bool 16 17config CLKEVT_I8253 18 bool 19 20config I8253_LOCK 21 bool 22 23config CLKBLD_I8253 24 def_bool y if CLKSRC_I8253 || CLKEVT_I8253 || I8253_LOCK 25 26config CLKSRC_MMIO 27 bool 28 29config DIGICOLOR_TIMER 30 bool 31 32config DW_APB_TIMER 33 bool 34 35config DW_APB_TIMER_OF 36 bool 37 select DW_APB_TIMER 38 select CLKSRC_OF 39 40config ROCKCHIP_TIMER 41 bool 42 select CLKSRC_OF 43 44config ARMADA_370_XP_TIMER 45 bool 46 select CLKSRC_OF 47 48config MESON6_TIMER 49 bool 50 select CLKSRC_MMIO 51 52config ORION_TIMER 53 select CLKSRC_OF 54 select CLKSRC_MMIO 55 bool 56 57config SUN4I_TIMER 58 select CLKSRC_MMIO 59 bool 60 61config SUN5I_HSTIMER 62 select CLKSRC_MMIO 63 bool 64 65config TEGRA_TIMER 66 bool 67 68config VT8500_TIMER 69 bool 70 71config CADENCE_TTC_TIMER 72 bool 73 74config ASM9260_TIMER 75 bool 76 select CLKSRC_MMIO 77 select CLKSRC_OF 78 79config CLKSRC_NOMADIK_MTU 80 bool 81 depends on (ARCH_NOMADIK || ARCH_U8500) 82 select CLKSRC_MMIO 83 help 84 Support for Multi Timer Unit. MTU provides access 85 to multiple interrupt generating programmable 86 32-bit free running decrementing counters. 87 88config CLKSRC_NOMADIK_MTU_SCHED_CLOCK 89 bool 90 depends on CLKSRC_NOMADIK_MTU 91 help 92 Use the Multi Timer Unit as the sched_clock. 93 94config CLKSRC_DBX500_PRCMU 95 bool "Clocksource PRCMU Timer" 96 depends on UX500_SOC_DB8500 97 default y 98 help 99 Use the always on PRCMU Timer as clocksource 100 101config CLKSRC_DBX500_PRCMU_SCHED_CLOCK 102 bool "Clocksource PRCMU Timer sched_clock" 103 depends on (CLKSRC_DBX500_PRCMU && !CLKSRC_NOMADIK_MTU_SCHED_CLOCK) 104 default y 105 help 106 Use the always on PRCMU Timer as sched_clock 107 108config CLKSRC_EFM32 109 bool "Clocksource for Energy Micro's EFM32 SoCs" if !ARCH_EFM32 110 depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST) 111 select CLKSRC_MMIO 112 default ARCH_EFM32 113 help 114 Support to use the timers of EFM32 SoCs as clock source and clock 115 event device. 116 117config CLKSRC_LPC32XX 118 bool 119 select CLKSRC_MMIO 120 select CLKSRC_OF 121 122config CLKSRC_PISTACHIO 123 bool 124 select CLKSRC_OF 125 126config CLKSRC_TI_32K 127 bool "Texas Instruments 32.768 Hz Clocksource" if COMPILE_TEST 128 depends on GENERIC_SCHED_CLOCK 129 select CLKSRC_OF if OF 130 help 131 This option enables support for Texas Instruments 32.768 Hz clocksource 132 available on many OMAP-like platforms. 133 134config CLKSRC_STM32 135 bool "Clocksource for STM32 SoCs" if !ARCH_STM32 136 depends on OF && ARM && (ARCH_STM32 || COMPILE_TEST) 137 select CLKSRC_MMIO 138 139config ARM_ARCH_TIMER 140 bool 141 select CLKSRC_OF if OF 142 select CLKSRC_ACPI if ACPI 143 144config ARM_ARCH_TIMER_EVTSTREAM 145 bool "Support for ARM architected timer event stream generation" 146 default y if ARM_ARCH_TIMER 147 depends on ARM_ARCH_TIMER 148 help 149 This option enables support for event stream generation based on 150 the ARM architected timer. It is used for waking up CPUs executing 151 the wfe instruction at a frequency represented as a power-of-2 152 divisor of the clock rate. 153 The main use of the event stream is wfe-based timeouts of userspace 154 locking implementations. It might also be useful for imposing timeout 155 on wfe to safeguard against any programming errors in case an expected 156 event is not generated. 157 This must be disabled for hardware validation purposes to detect any 158 hardware anomalies of missing events. 159 160config ARM_GLOBAL_TIMER 161 bool 162 select CLKSRC_OF if OF 163 help 164 This options enables support for the ARM global timer unit 165 166config ARM_TIMER_SP804 167 bool "Support for Dual Timer SP804 module" 168 depends on GENERIC_SCHED_CLOCK && CLKDEV_LOOKUP 169 select CLKSRC_MMIO 170 select CLKSRC_OF if OF 171 172config CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK 173 bool 174 depends on ARM_GLOBAL_TIMER 175 default y 176 help 177 Use ARM global timer clock source as sched_clock 178 179config ARMV7M_SYSTICK 180 bool 181 select CLKSRC_OF if OF 182 select CLKSRC_MMIO 183 help 184 This options enables support for the ARMv7M system timer unit 185 186config ATMEL_PIT 187 select CLKSRC_OF if OF 188 def_bool SOC_AT91SAM9 || SOC_SAMA5 189 190config ATMEL_ST 191 bool 192 select CLKSRC_OF 193 select MFD_SYSCON 194 195config CLKSRC_METAG_GENERIC 196 def_bool y if METAG 197 help 198 This option enables support for the Meta per-thread timers. 199 200config CLKSRC_EXYNOS_MCT 201 def_bool y if ARCH_EXYNOS 202 depends on !ARM64 203 help 204 Support for Multi Core Timer controller on Exynos SoCs. 205 206config CLKSRC_SAMSUNG_PWM 207 bool 208 help 209 This is a new clocksource driver for the PWM timer found in 210 Samsung S3C, S5P and Exynos SoCs, replacing an earlier driver 211 for all devicetree enabled platforms. This driver will be 212 needed only on systems that do not have the Exynos MCT available. 213 214config FSL_FTM_TIMER 215 bool 216 help 217 Support for Freescale FlexTimer Module (FTM) timer. 218 219config VF_PIT_TIMER 220 bool 221 help 222 Support for Period Interrupt Timer on Freescale Vybrid Family SoCs. 223 224config SYS_SUPPORTS_SH_CMT 225 bool 226 227config MTK_TIMER 228 select CLKSRC_OF 229 select CLKSRC_MMIO 230 bool 231 232config SYS_SUPPORTS_SH_MTU2 233 bool 234 235config SYS_SUPPORTS_SH_TMU 236 bool 237 238config SYS_SUPPORTS_EM_STI 239 bool 240 241config SH_TIMER_CMT 242 bool "Renesas CMT timer driver" if COMPILE_TEST 243 depends on GENERIC_CLOCKEVENTS 244 depends on HAS_IOMEM 245 default SYS_SUPPORTS_SH_CMT 246 help 247 This enables build of a clocksource and clockevent driver for 248 the Compare Match Timer (CMT) hardware available in 16/32/48-bit 249 variants on a wide range of Mobile and Automotive SoCs from Renesas. 250 251config SH_TIMER_MTU2 252 bool "Renesas MTU2 timer driver" if COMPILE_TEST 253 depends on GENERIC_CLOCKEVENTS 254 depends on HAS_IOMEM 255 default SYS_SUPPORTS_SH_MTU2 256 help 257 This enables build of a clockevent driver for the Multi-Function 258 Timer Pulse Unit 2 (MTU2) hardware available on SoCs from Renesas. 259 This hardware comes with 16 bit-timer registers. 260 261config SH_TIMER_TMU 262 bool "Renesas TMU timer driver" if COMPILE_TEST 263 depends on GENERIC_CLOCKEVENTS 264 depends on HAS_IOMEM 265 default SYS_SUPPORTS_SH_TMU 266 help 267 This enables build of a clocksource and clockevent driver for 268 the 32-bit Timer Unit (TMU) hardware available on a wide range 269 SoCs from Renesas. 270 271config EM_TIMER_STI 272 bool "Renesas STI timer driver" if COMPILE_TEST 273 depends on GENERIC_CLOCKEVENTS && HAS_IOMEM 274 default SYS_SUPPORTS_EM_STI 275 help 276 This enables build of a clocksource and clockevent driver for 277 the 48-bit System Timer (STI) hardware available on a SoCs 278 such as EMEV2 from former NEC Electronics. 279 280config CLKSRC_QCOM 281 bool 282 283config CLKSRC_VERSATILE 284 bool "ARM Versatile (Express) reference platforms clock source" 285 depends on PLAT_VERSATILE && GENERIC_SCHED_CLOCK && !ARCH_USES_GETTIMEOFFSET 286 select CLKSRC_OF 287 default y if MFD_VEXPRESS_SYSREG 288 help 289 This option enables clock source based on free running 290 counter available in the "System Registers" block of 291 ARM Versatile, RealView and Versatile Express reference 292 platforms. 293 294config CLKSRC_MIPS_GIC 295 bool 296 depends on MIPS_GIC 297 select CLKSRC_OF 298 299config CLKSRC_TANGO_XTAL 300 bool 301 select CLKSRC_OF 302 303config CLKSRC_PXA 304 def_bool y if ARCH_PXA || ARCH_SA1100 305 select CLKSRC_OF if OF 306 help 307 This enables OST0 support available on PXA and SA-11x0 308 platforms. 309 310config H8300_TMR16 311 bool 312 313config H8300_TPU 314 bool 315 316config CLKSRC_IMX_GPT 317 bool "Clocksource using i.MX GPT" if COMPILE_TEST 318 depends on ARM && CLKDEV_LOOKUP 319 select CLKSRC_MMIO 320 321config CLKSRC_ST_LPC 322 bool 323 depends on ARCH_STI 324 select CLKSRC_OF if OF 325 help 326 Enable this option to use the Low Power controller timer 327 as clocksource. 328 329endmenu 330