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-----BEGIN PGP SIGNATURE----- iQFQBAABCgA6FiEEqxhEmNJ6d7ZdeFLIHrMeAg6sL8gFAl960JkcHGV1Z2VuLmhy aXN0ZXZAbWljcm9jaGlwLmNvbQAKCRAesx4CDqwvyDaWCACYjvloDzXQaYaauWwR whFwgkUAQ8yjadj/12We/X2b7HGisNFNE80e/V4MU8RrJDFZmohZdLWMfRKez29X d+BG+OzVXxHWozny7ZQ2g1yYJbgCI7sVUeemQjUBZJ6aKPneQlVfwyfT2l88wOVK yQMqS+ZyVogihR9/NHCOlJHog+6OOoBmc16w1tymM6QcO8ZsYeA66ed8SLnjDb3N Rg2Ll2RR/lHuD/Fpxt1aUhybXFKSIOr4Qopo5X0hw5B3ibkp6JXGRE2wIwQYw6CA q+sKTg37CSzylipkQ5EOGdLcXD7r3KIGkSbUMb8wvt6dROarnIuQ+zJeF3sr+l2H hSoU =vHqZ -----END PGP SIGNATURE----- Merge tag 'u-boot-atmel-2021.01-a' of https://gitlab.denx.de/u-boot/custodians/u-boot-atmel into next First set of u-boot-atmel features for 2021.01 cycle: This feature set includes a new CPU driver for at91 family, new driver for PIT64B hardware timer, support for new at91 family SoC named sama7g5 which adds: clock support, including conversion of the clock tree to CCF; SoC support in mach-at91, pinctrl and mmc drivers update. The feature set also includes updates for mmc driver and some other minor fixes and features regarding building without the old Atmel PIT and the possibility to read a secondary MAC address from a second i2c EEPROM.
224 lines
6.8 KiB
Plaintext
224 lines
6.8 KiB
Plaintext
menu "Timer Support"
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config TIMER
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bool "Enable driver model for timer drivers"
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depends on DM
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help
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Enable driver model for timer access. It uses the same API as
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lib/time.c, but now implemented by the uclass. The first timer
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will be used. The timer is usually a 32 bits free-running up
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counter. There may be no real tick, and no timer interrupt.
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config SPL_TIMER
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bool "Enable driver model for timer drivers in SPL"
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depends on TIMER && SPL
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help
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Enable support for timer drivers in SPL. These can be used to get
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a timer value when in SPL, or perhaps for implementing a delay
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function. This enables the drivers in drivers/timer as part of an
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SPL build.
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config TPL_TIMER
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bool "Enable driver model for timer drivers in TPL"
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depends on TIMER && TPL
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help
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Enable support for timer drivers in TPL. These can be used to get
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a timer value when in TPL, or perhaps for implementing a delay
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function. This enables the drivers in drivers/timer as part of an
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TPL build.
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config TIMER_EARLY
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bool "Allow timer to be used early in U-Boot"
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depends on TIMER
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# initr_bootstage() requires a timer and is called before initr_dm()
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# so only the early timer is available
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default y if X86 && BOOTSTAGE
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help
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In some cases the timer must be accessible before driver model is
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active. Examples include when using CONFIG_TRACE to trace U-Boot's
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execution before driver model is set up. Enable this option to
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use an early timer. These functions must be supported by your timer
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driver: timer_early_get_count() and timer_early_get_rate().
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config AG101P_TIMER
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bool "AG101P timer support"
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depends on TIMER && NDS32
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help
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Select this to enable a timer for AG01P devices.
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config ALTERA_TIMER
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bool "Altera timer support"
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depends on TIMER
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help
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Select this to enable a timer for Altera devices. Please find
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details on the "Embedded Peripherals IP User Guide" of Altera.
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config ARC_TIMER
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bool "ARC timer support"
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depends on TIMER && ARC && CLK
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help
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Select this to enable built-in ARC timers.
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ARC cores may have up to 2 built-in timers: timer0 and timer1,
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usually at least one of them exists. Either of them is supported
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in U-Boot.
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config AST_TIMER
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bool "Aspeed ast2400/ast2500 timer support"
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depends on TIMER
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default y if ARCH_ASPEED
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help
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Select this to enable timer for Aspeed ast2400/ast2500 devices.
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This is a simple sys timer driver, it is compatible with lib/time.c,
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but does not support any interrupts. Even though SoC has 8 hardware
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counters, they are all treated as a single device by this driver.
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This is mostly because they all share several registers which
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makes it difficult to completely separate them.
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config ATCPIT100_TIMER
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bool "ATCPIT100 timer support"
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depends on TIMER
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help
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Select this to enable a ATCPIT100 timer which will be embedded
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in AE3XX, AE250 boards.
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config ATMEL_PIT_TIMER
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bool "Atmel periodic interval timer support"
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depends on TIMER
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help
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Select this to enable a periodic interval timer for Atmel devices,
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it is designed to offer maximum accuracy and efficient management,
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even for systems with long response time.
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config CADENCE_TTC_TIMER
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bool "Cadence TTC (Triple Timer Counter)"
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depends on TIMER
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help
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Enables support for the cadence ttc driver. This driver is present
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on Xilinx Zynq and ZynqMP SoCs.
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config DESIGNWARE_APB_TIMER
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bool "Designware APB Timer"
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depends on TIMER
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help
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Enables support for the Designware APB Timer driver. This timer is
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present on Altera SoCFPGA SoCs.
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config MPC83XX_TIMER
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bool "MPC83xx timer support"
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depends on TIMER
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help
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Select this to enable support for the timer found on
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devices based on the MPC83xx family of SoCs.
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config RENESAS_OSTM_TIMER
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bool "Renesas RZ/A1 R7S72100 OSTM Timer"
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depends on TIMER
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help
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Enables support for the Renesas OSTM Timer driver.
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This timer is present on Renesas RZ/A1 R7S72100 SoCs.
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config X86_TSC_TIMER_EARLY_FREQ
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int "x86 TSC timer frequency in MHz when used as the early timer"
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depends on X86_TSC_TIMER
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default 1000
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help
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Sets the estimated CPU frequency in MHz when TSC is used as the
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early timer and the frequency can neither be calibrated via some
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hardware ways, nor got from device tree at the time when device
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tree is not available yet.
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config NOMADIK_MTU_TIMER
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bool "Nomadik MTU Timer"
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depends on TIMER
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help
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Enables support for the Nomadik Multi Timer Unit (MTU),
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used in ST-Ericsson Ux500 SoCs.
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The MTU provides 4 decrementing free-running timers.
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At the moment, only the first timer is used by the driver.
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config OMAP_TIMER
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bool "Omap timer support"
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depends on TIMER
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help
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Select this to enable an timer for Omap devices.
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config RISCV_TIMER
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bool "RISC-V timer support"
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depends on TIMER && RISCV
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help
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Select this to enable support for a generic RISC-V S-Mode timer
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driver.
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config ROCKCHIP_TIMER
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bool "Rockchip timer support"
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depends on TIMER
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help
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Select this to enable support for the timer found on
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Rockchip devices.
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config SANDBOX_TIMER
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bool "Sandbox timer support"
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depends on SANDBOX && TIMER
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help
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Select this to enable an emulated timer for sandbox. It gets
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time from host os.
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config STI_TIMER
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bool "STi timer support"
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depends on TIMER
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default y if ARCH_STI
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help
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Select this to enable a timer for STi devices.
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config STM32_TIMER
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bool "STM32 timer support"
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depends on TIMER
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help
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Select this to enable support for the timer found on
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STM32 devices.
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config X86_TSC_TIMER
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bool "x86 Time-Stamp Counter (TSC) timer support"
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depends on TIMER && X86
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help
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Select this to enable Time-Stamp Counter (TSC) timer for x86.
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config X86_TSC_READ_BASE
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bool "Read the TSC timer base on start-up"
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depends on X86_TSC_TIMER
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help
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On x86 platforms the TSC timer tick starts at the value 0 on reset.
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This it makes no sense to read the timer on boot and use that as the
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base, since we will miss some time taken to load U-Boot, etc. This
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delay is controlled by the SoC and we cannot reduce it, but for
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bootstage we want to record the time since reset as accurately as
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possible.
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The only exception is when U-Boot is used as a secondary bootloader,
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where this option should be enabled.
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config TPL_X86_TSC_TIMER_NATIVE
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bool "x86 TSC timer uses native calibration"
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depends on TPL && X86_TSC_TIMER
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help
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Selects native timer calibration for TPL and don't include the other
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methods in the code. This helps to reduce code size in TPL and works
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on fairly modern Intel chips. Code-size reductions is about 700
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bytes.
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config MTK_TIMER
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bool "MediaTek timer support"
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depends on TIMER
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help
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Select this to enable support for the timer found on
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MediaTek devices.
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config MCHP_PIT64B_TIMER
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bool "Microchip 64-bit periodic interval timer support"
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depends on TIMER
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help
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Select this to enable support for Microchip 64-bit periodic
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interval timer.
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endmenu
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