1menu "Timer Support" 2 3config TIMER 4 bool "Enable driver model for timer drivers" 5 depends on DM 6 help 7 Enable driver model for timer access. It uses the same API as 8 lib/time.c, but now implemented by the uclass. The first timer 9 will be used. The timer is usually a 32 bits free-running up 10 counter. There may be no real tick, and no timer interrupt. 11 12config SPL_TIMER 13 bool "Enable driver model for timer drivers in SPL" 14 depends on TIMER && SPL 15 help 16 Enable support for timer drivers in SPL. These can be used to get 17 a timer value when in SPL, or perhaps for implementing a delay 18 function. This enables the drivers in drivers/timer as part of an 19 SPL build. 20 21config TPL_TIMER 22 bool "Enable driver model for timer drivers in TPL" 23 depends on TIMER && TPL 24 help 25 Enable support for timer drivers in TPL. These can be used to get 26 a timer value when in TPL, or perhaps for implementing a delay 27 function. This enables the drivers in drivers/timer as part of an 28 TPL build. 29 30config TIMER_EARLY 31 bool "Allow timer to be used early in U-Boot" 32 depends on TIMER 33 help 34 In some cases the timer must be accessible before driver model is 35 active. Examples include when using CONFIG_TRACE to trace U-Boot's 36 execution before driver model is set up. Enable this option to 37 use an early timer. These functions must be supported by your timer 38 driver: timer_early_get_count() and timer_early_get_rate(). 39 40config ALTERA_TIMER 41 bool "Altera timer support" 42 depends on TIMER 43 help 44 Select this to enable a timer for Altera devices. Please find 45 details on the "Embedded Peripherals IP User Guide" of Altera. 46 47config ATMEL_PIT_TIMER 48 bool "Atmel periodic interval timer support" 49 depends on TIMER 50 help 51 Select this to enable a periodic interval timer for Atmel devices, 52 it is designed to offer maximum accuracy and efficient management, 53 even for systems with long response time. 54 55config CADENCE_TTC_TIMER 56 bool "Cadence TTC (Triple Timer Counter)" 57 depends on TIMER 58 help 59 Enables support for the cadence ttc driver. This driver is present 60 on Xilinx Zynq and ZynqMP SoCs. 61 62config DESIGNWARE_APB_TIMER 63 bool "Designware APB Timer" 64 depends on TIMER 65 help 66 Enables support for the Designware APB Timer driver. This timer is 67 present on Altera SoCFPGA SoCs. 68 69config SANDBOX_TIMER 70 bool "Sandbox timer support" 71 depends on SANDBOX && TIMER 72 help 73 Select this to enable an emulated timer for sandbox. It gets 74 time from host os. 75 76config X86_TSC_TIMER 77 bool "x86 Time-Stamp Counter (TSC) timer support" 78 depends on TIMER && X86 79 help 80 Select this to enable Time-Stamp Counter (TSC) timer for x86. 81 82config OMAP_TIMER 83 bool "Omap timer support" 84 depends on TIMER 85 help 86 Select this to enable an timer for Omap devices. 87 88config AST_TIMER 89 bool "Aspeed ast2400/ast2500 timer support" 90 depends on TIMER 91 default y if ARCH_ASPEED 92 help 93 Select this to enable timer for Aspeed ast2400/ast2500 devices. 94 This is a simple sys timer driver, it is compatible with lib/time.c, 95 but does not support any interrupts. Even though SoC has 8 hardware 96 counters, they are all treated as a single device by this driver. 97 This is mostly because they all share several registers which 98 makes it difficult to completely separate them. 99 100config STI_TIMER 101 bool "STi timer support" 102 depends on TIMER 103 default y if ARCH_STI 104 help 105 Select this to enable a timer for STi devices. 106 107config ARC_TIMER 108 bool "ARC timer support" 109 depends on TIMER && ARC && CLK 110 help 111 Select this to enable built-in ARC timers. 112 ARC cores may have up to 2 built-in timers: timer0 and timer1, 113 usually at least one of them exists. Either of them is supported 114 in U-Boot. 115 116config AG101P_TIMER 117 bool "AG101P timer support" 118 depends on TIMER && NDS32 119 help 120 Select this to enable a timer for AG01P devices. 121 122config ATCPIT100_TIMER 123 bool "ATCPIT100 timer support" 124 depends on TIMER 125 help 126 Select this to enable a ATCPIT100 timer which will be embeded 127 in AE3XX, AE250 boards. 128 129config ROCKCHIP_TIMER 130 bool "Rockchip timer support" 131 depends on TIMER 132 help 133 Select this to enable support for the timer found on 134 Rockchip devices. 135 136config STM32_TIMER 137 bool "STM32 timer support" 138 depends on TIMER 139 help 140 Select this to enable support for the timer found on 141 STM32 devices. 142 143endmenu 144