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 "AG101P timer support"
45 depends on TIMER && NDS32
47 Select this to enable a timer for AG01P devices.
50 bool "Altera timer support"
53 Select this to enable a timer for Altera devices. Please find
54 details on the "Embedded Peripherals IP User Guide" of Altera.
57 bool "ARC timer support"
58 depends on TIMER && ARC && CLK
60 Select this to enable built-in ARC timers.
61 ARC cores may have up to 2 built-in timers: timer0 and timer1,
62 usually at least one of them exists. Either of them is supported
66 bool "Aspeed ast2400/ast2500 timer support"
68 default y if ARCH_ASPEED
70 Select this to enable timer for Aspeed ast2400/ast2500 devices.
71 This is a simple sys timer driver, it is compatible with lib/time.c,
72 but does not support any interrupts. Even though SoC has 8 hardware
73 counters, they are all treated as a single device by this driver.
74 This is mostly because they all share several registers which
75 makes it difficult to completely separate them.
77 config ATCPIT100_TIMER
78 bool "ATCPIT100 timer support"
81 Select this to enable a ATCPIT100 timer which will be embedded
82 in AE3XX, AE250 boards.
84 config ATMEL_PIT_TIMER
85 bool "Atmel periodic interval timer support"
88 Select this to enable a periodic interval timer for Atmel devices,
89 it is designed to offer maximum accuracy and efficient management,
90 even for systems with long response time.
92 config CADENCE_TTC_TIMER
93 bool "Cadence TTC (Triple Timer Counter)"
96 Enables support for the cadence ttc driver. This driver is present
97 on Xilinx Zynq and ZynqMP SoCs.
99 config DESIGNWARE_APB_TIMER
100 bool "Designware APB Timer"
103 Enables support for the Designware APB Timer driver. This timer is
104 present on Altera SoCFPGA SoCs.
107 bool "MPC83xx timer support"
110 Select this to enable support for the timer found on
111 devices based on the MPC83xx family of SoCs.
113 config X86_TSC_TIMER_EARLY_FREQ
114 int "x86 TSC timer frequency in MHz when used as the early timer"
115 depends on X86_TSC_TIMER
118 Sets the estimated CPU frequency in MHz when TSC is used as the
119 early timer and the frequency can neither be calibrated via some
120 hardware ways, nor got from device tree at the time when device
121 tree is not available yet.
124 bool "Omap timer support"
127 Select this to enable an timer for Omap devices.
129 config ROCKCHIP_TIMER
130 bool "Rockchip timer support"
133 Select this to enable support for the timer found on
137 bool "Sandbox timer support"
138 depends on SANDBOX && TIMER
140 Select this to enable an emulated timer for sandbox. It gets
144 bool "STi timer support"
146 default y if ARCH_STI
148 Select this to enable a timer for STi devices.
151 bool "STM32 timer support"
154 Select this to enable support for the timer found on
158 bool "x86 Time-Stamp Counter (TSC) timer support"
159 depends on TIMER && X86
161 Select this to enable Time-Stamp Counter (TSC) timer for x86.
164 bool "MediaTek timer support"
167 Select this to enable support for the timer found on