100 lines
3.3 KiB
Plaintext
100 lines
3.3 KiB
Plaintext
# Timer driver configuration options
|
|
|
|
# Copyright (c) 2014-2015 Wind River Systems, Inc.
|
|
# Copyright (c) 2016 Cadence Design Systems, Inc.
|
|
# Copyright (c) 2019 Intel Corp.
|
|
# SPDX-License-Identifier: Apache-2.0
|
|
|
|
if SYS_CLOCK_EXISTS
|
|
|
|
menu "Timer drivers"
|
|
|
|
config TIMER_HAS_64BIT_CYCLE_COUNTER
|
|
bool
|
|
help
|
|
When this option is true, the k_cycle_get_64() call is
|
|
available to provide values from a 64-bit cycle counter.
|
|
|
|
config TIMER_READS_ITS_FREQUENCY_AT_RUNTIME
|
|
bool "Timer queries its hardware to find its frequency at runtime"
|
|
help
|
|
The drivers select this option automatically when needed. Do not modify
|
|
this unless you have a very good reason for it.
|
|
|
|
config SYSTEM_CLOCK_SLOPPY_IDLE
|
|
bool "Timer allowed to skew uptime clock during idle"
|
|
help
|
|
When true, the timer driver is not required to maintain a
|
|
correct system uptime count when the system enters idle.
|
|
Some platforms may take advantage of this to reduce the
|
|
overhead from regular interrupts required to handle counter
|
|
wraparound conditions.
|
|
|
|
config SYSTEM_CLOCK_INIT_PRIORITY
|
|
int "System clock driver initialization priority"
|
|
default 0
|
|
help
|
|
This options can be used to set a specific initialization priority
|
|
value for the system clock driver. As driver initialization might need
|
|
the clock to be running already, you should let the default value as it
|
|
is (0).
|
|
|
|
# Hidden option to be selected by individual SoC.
|
|
config TICKLESS_CAPABLE
|
|
bool
|
|
help
|
|
Timer drivers should select this flag if they are capable of
|
|
supporting tickless operation. That is, a call to
|
|
sys_clock_set_timeout() with a number of ticks greater than
|
|
one should be expected not to produce a call to
|
|
sys_clock_announce() (really, not to produce an interrupt at
|
|
all) until the specified expiration.
|
|
|
|
config SYSTEM_TIMER_HAS_DISABLE_SUPPORT
|
|
bool
|
|
help
|
|
This option should be selected by drivers implementing support for
|
|
sys_clock_disable() API.
|
|
|
|
config SYSTEM_CLOCK_LOCK_FREE_COUNT
|
|
bool
|
|
help
|
|
This option should be selected by drivers implementing a lock free
|
|
cycle count accessor. This is needed for instrumenting spin lock
|
|
hold times.
|
|
|
|
source "drivers/timer/Kconfig.altera_avalon"
|
|
source "drivers/timer/Kconfig.ambiq"
|
|
source "drivers/timer/Kconfig.x86"
|
|
source "drivers/timer/Kconfig.arcv2"
|
|
source "drivers/timer/Kconfig.arm_arch"
|
|
source "drivers/timer/Kconfig.cavs"
|
|
source "drivers/timer/Kconfig.cc13xx_cc26xx_rtc"
|
|
source "drivers/timer/Kconfig.cortex_m_systick"
|
|
source "drivers/timer/Kconfig.esp32"
|
|
source "drivers/timer/Kconfig.gecko"
|
|
source "drivers/timer/Kconfig.ite_it8xxx2"
|
|
source "drivers/timer/Kconfig.leon_gptimer"
|
|
source "drivers/timer/Kconfig.litex"
|
|
source "drivers/timer/Kconfig.mchp_xec_rtos"
|
|
source "drivers/timer/Kconfig.mcux_gpt"
|
|
source "drivers/timer/Kconfig.mcux_lptmr"
|
|
source "drivers/timer/Kconfig.mcux_os"
|
|
source "drivers/timer/Kconfig.mips_cp0"
|
|
source "drivers/timer/Kconfig.native_posix"
|
|
source "drivers/timer/Kconfig.npcx_itim"
|
|
source "drivers/timer/Kconfig.nrf_rtc"
|
|
source "drivers/timer/Kconfig.nrf_grtc"
|
|
source "drivers/timer/Kconfig.nrf_xrtc"
|
|
source "drivers/timer/Kconfig.rcar_cmt"
|
|
source "drivers/timer/Kconfig.riscv_machine"
|
|
source "drivers/timer/Kconfig.rv32m1_lptmr"
|
|
source "drivers/timer/Kconfig.sam0_rtc"
|
|
source "drivers/timer/Kconfig.stm32_lptim"
|
|
source "drivers/timer/Kconfig.xlnx_psttc"
|
|
source "drivers/timer/Kconfig.xtensa"
|
|
|
|
endmenu
|
|
|
|
endif # SYS_CLOCK_EXISTS
|