menu "Timer Support"
config TIMER
- bool "Enable Driver Model for Timer drivers"
+ bool "Enable driver model for timer drivers"
depends on DM
help
- Enable driver model for Timer access. It uses the same API as
- lib/time.c. But now implemented by the uclass. The first timer
+ Enable driver model for timer access. It uses the same API as
+ lib/time.c, but now implemented by the uclass. The first timer
will be used. The timer is usually a 32 bits free-running up
counter. There may be no real tick, and no timer interrupt.
+config SPL_TIMER
+ bool "Enable driver model for timer drivers in SPL"
+ depends on TIMER && SPL
+ help
+ Enable support for timer drivers in SPL. These can be used to get
+ a timer value when in SPL, or perhaps for implementing a delay
+ function. This enables the drivers in drivers/timer as part of an
+ SPL build.
+
+config TPL_TIMER
+ bool "Enable driver model for timer drivers in TPL"
+ depends on TIMER && TPL
+ help
+ Enable support for timer drivers in TPL. These can be used to get
+ a timer value when in TPL, or perhaps for implementing a delay
+ function. This enables the drivers in drivers/timer as part of an
+ TPL build.
+
+config TIMER_EARLY
+ bool "Allow timer to be used early in U-Boot"
+ depends on TIMER
+ help
+ In some cases the timer must be accessible before driver model is
+ active. Examples include when using CONFIG_TRACE to trace U-Boot's
+ execution before driver model is set up. Enable this option to
+ use an early timer. These functions must be supported by your timer
+ driver: timer_early_get_count() and timer_early_get_rate().
+
config ALTERA_TIMER
- bool "Altera Timer support"
+ bool "Altera timer support"
depends on TIMER
help
- Select this to enable an timer for Altera devices. Please find
+ Select this to enable a timer for Altera devices. Please find
details on the "Embedded Peripherals IP User Guide" of Altera.
+config ATMEL_PIT_TIMER
+ bool "Atmel periodic interval timer support"
+ depends on TIMER
+ help
+ Select this to enable a periodic interval timer for Atmel devices,
+ it is designed to offer maximum accuracy and efficient management,
+ even for systems with long response time.
+
+config CADENCE_TTC_TIMER
+ bool "Cadence TTC (Triple Timer Counter)"
+ depends on TIMER
+ help
+ Enables support for the cadence ttc driver. This driver is present
+ on Xilinx Zynq and ZynqMP SoCs.
+
+config SANDBOX_TIMER
+ bool "Sandbox timer support"
+ depends on SANDBOX && TIMER
+ help
+ Select this to enable an emulated timer for sandbox. It gets
+ time from host os.
+
+config X86_TSC_TIMER
+ bool "x86 Time-Stamp Counter (TSC) timer support"
+ depends on TIMER && X86
+ help
+ Select this to enable Time-Stamp Counter (TSC) timer for x86.
+
+config OMAP_TIMER
+ bool "Omap timer support"
+ depends on TIMER
+ help
+ Select this to enable an timer for Omap devices.
+
+config AST_TIMER
+ bool "Aspeed ast2400/ast2500 timer support"
+ depends on TIMER
+ default y if ARCH_ASPEED
+ help
+ Select this to enable timer for Aspeed ast2400/ast2500 devices.
+ This is a simple sys timer driver, it is compatible with lib/time.c,
+ but does not support any interrupts. Even though SoC has 8 hardware
+ counters, they are all treated as a single device by this driver.
+ This is mostly because they all share several registers which
+ makes it difficult to completely separate them.
+
+config STI_TIMER
+ bool "STi timer support"
+ depends on TIMER
+ default y if ARCH_STI
+ help
+ Select this to enable a timer for STi devices.
+
+config ARC_TIMER
+ bool "ARC timer support"
+ depends on TIMER && ARC && CLK
+ help
+ Select this to enable built-in ARC timers.
+ ARC cores may have up to 2 built-in timers: timer0 and timer1,
+ usually at least one of them exists. Either of them is supported
+ in U-Boot.
+
+config AG101P_TIMER
+ bool "AG101P timer support"
+ depends on TIMER && NDS32
+ help
+ Select this to enable a timer for AG01P devices.
+
+config ATCPIT100_TIMER
+ bool "ATCPIT100 timer support"
+ depends on TIMER
+ help
+ Select this to enable a ATCPIT100 timer which will be embeded
+ in AE3XX, AE250 boards.
+
+config ROCKCHIP_TIMER
+ bool "Rockchip timer support"
+ depends on TIMER
+ help
+ Select this to enable support for the timer found on
+ Rockchip devices.
+
+config STM32_TIMER
+ bool "STM32 timer support"
+ depends on TIMER
+ help
+ Select this to enable support for the timer found on
+ STM32 devices.
+
endmenu