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