4 bool "Enable driver model for timer drivers"
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.
13 bool "Enable driver model for timer drivers in SPL"
14 depends on TIMER && SPL
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
22 bool "Enable driver model for timer drivers in TPL"
23 depends on TIMER && TPL
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
31 bool "Allow timer to be used early in U-Boot"
33 # initr_bootstage() requires a timer and is called before initr_dm()
34 # so only the early timer is available
35 default y if X86 && BOOTSTAGE
37 In some cases the timer must be accessible before driver model is
38 active. Examples include when using CONFIG_TRACE to trace U-Boot's
39 execution before driver model is set up. Enable this option to
40 use an early timer. These functions must be supported by your timer
41 driver: timer_early_get_count() and timer_early_get_rate().
44 bool "Altera timer support"
47 Select this to enable a timer for Altera devices. Please find
48 details on the "Embedded Peripherals IP User Guide" of Altera.
50 config ATMEL_PIT_TIMER
51 bool "Atmel periodic interval timer support"
54 Select this to enable a periodic interval timer for Atmel devices,
55 it is designed to offer maximum accuracy and efficient management,
56 even for systems with long response time.
58 config CADENCE_TTC_TIMER
59 bool "Cadence TTC (Triple Timer Counter)"
62 Enables support for the cadence ttc driver. This driver is present
63 on Xilinx Zynq and ZynqMP SoCs.
65 config DESIGNWARE_APB_TIMER
66 bool "Designware APB Timer"
69 Enables support for the Designware APB Timer driver. This timer is
70 present on Altera SoCFPGA SoCs.
73 bool "Sandbox timer support"
74 depends on SANDBOX && TIMER
76 Select this to enable an emulated timer for sandbox. It gets
80 bool "x86 Time-Stamp Counter (TSC) timer support"
81 depends on TIMER && X86
83 Select this to enable Time-Stamp Counter (TSC) timer for x86.
85 config X86_TSC_TIMER_EARLY_FREQ
86 int "x86 TSC timer frequency in MHz when used as the early timer"
87 depends on X86_TSC_TIMER
90 Sets the estimated CPU frequency in MHz when TSC is used as the
91 early timer and the frequency can neither be calibrated via some
92 hardware ways, nor got from device tree at the time when device
93 tree is not available yet.
96 bool "Omap timer support"
99 Select this to enable an timer for Omap devices.
102 bool "Aspeed ast2400/ast2500 timer support"
104 default y if ARCH_ASPEED
106 Select this to enable timer for Aspeed ast2400/ast2500 devices.
107 This is a simple sys timer driver, it is compatible with lib/time.c,
108 but does not support any interrupts. Even though SoC has 8 hardware
109 counters, they are all treated as a single device by this driver.
110 This is mostly because they all share several registers which
111 makes it difficult to completely separate them.
114 bool "STi timer support"
116 default y if ARCH_STI
118 Select this to enable a timer for STi devices.
121 bool "ARC timer support"
122 depends on TIMER && ARC && CLK
124 Select this to enable built-in ARC timers.
125 ARC cores may have up to 2 built-in timers: timer0 and timer1,
126 usually at least one of them exists. Either of them is supported
130 bool "AG101P timer support"
131 depends on TIMER && NDS32
133 Select this to enable a timer for AG01P devices.
135 config ATCPIT100_TIMER
136 bool "ATCPIT100 timer support"
139 Select this to enable a ATCPIT100 timer which will be embeded
140 in AE3XX, AE250 boards.
142 config ROCKCHIP_TIMER
143 bool "Rockchip timer support"
146 Select this to enable support for the timer found on
150 bool "STM32 timer support"
153 Select this to enable support for the timer found on
157 bool "MPC83xx timer support"
160 Select this to enable support for the timer found on
161 devices based on the MPC83xx family of SoCs.