menu "Timer Support"
  
  config TIMER

  	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

  	  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

  	# initr_bootstage() requires a timer and is called before initr_dm()
  	# so only the early timer is available
  	default y if X86 && BOOTSTAGE

  	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 AG101P_TIMER
  	bool "AG101P timer support"
  	depends on TIMER && NDS32
  	help
  	  Select this to enable a timer for AG01P devices.

  config ALTERA_TIMER

  	bool "Altera timer support"

  	depends on TIMER
  	help

  	  Select this to enable a timer for Altera devices. Please find

  	  details on the "Embedded Peripherals IP User Guide" of Altera.

  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 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 ATCPIT100_TIMER
  	bool "ATCPIT100 timer support"
  	depends on TIMER
  	help
  	  Select this to enable a ATCPIT100 timer which will be embedded
  	  in AE3XX, AE250 boards.

  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 DESIGNWARE_APB_TIMER
  	bool "Designware APB Timer"
  	depends on TIMER
  	help
  	  Enables support for the Designware APB Timer driver. This timer is
  	  present on Altera SoCFPGA SoCs.

  config MPC83XX_TIMER
  	bool "MPC83xx timer support"
  	depends on TIMER

  	help

  	  Select this to enable support for the timer found on
  	  devices based on the MPC83xx family of SoCs.

  config X86_TSC_TIMER_EARLY_FREQ
  	int "x86 TSC timer frequency in MHz when used as the early timer"
  	depends on X86_TSC_TIMER
  	default 1000
  	help
  	  Sets the estimated CPU frequency in MHz when TSC is used as the
  	  early timer and the frequency can neither be calibrated via some
  	  hardware ways, nor got from device tree at the time when device
  	  tree is not available yet.

  config OMAP_TIMER
  	bool "Omap timer support"
  	depends on TIMER
  	help
  	  Select this to enable an timer for Omap devices.

  config RISCV_TIMER
  	bool "RISC-V timer support"
  	depends on TIMER && RISCV
  	help
  	  Select this to enable support for the timer as defined
  	  by the RISC-V privileged architecture spec.

  config ROCKCHIP_TIMER
  	bool "Rockchip timer support"

  	depends on TIMER

  	help

  	  Select this to enable support for the timer found on
  	  Rockchip devices.
  
  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 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 STM32_TIMER

  	bool "STM32 timer support"

  	depends on TIMER
  	help
  	  Select this to enable support for the timer found on
  	  STM32 devices.

  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 MTK_TIMER
  	bool "MediaTek timer support"
  	depends on TIMER
  	help
  	  Select this to enable support for the timer found on
  	  MediaTek devices.

  endmenu