# Kconfig - timer driver configuration options # # Copyright (c) 2014-2015 Wind River Systems, Inc. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are met: # # 1) Redistributions of source code must retain the above copyright notice, # this list of conditions and the following disclaimer. # # 2) Redistributions in binary form must reproduce the above copyright notice, # this list of conditions and the following disclaimer in the documentation # and/or other materials provided with the distribution. # # 3) Neither the name of Wind River Systems nor the names of its contributors # may be used to endorse or promote products derived from this software without # specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE # POSSIBILITY OF SUCH DAMAGE. # menu "Timer Drivers" config HPET_TIMER bool "HPET timer" default n depends on X86_32 help This option selects High Precision Event Timer (HPET) as a system timer. config LOAPIC_TIMER bool "LOAPIC timer" depends on LOAPIC && X86_32 default n help This option selects LOAPIC timer as a system timer. config LOAPIC_TIMER_FREQ int "LOAPIC timer frequency" depends on LOAPIC_TIMER && X86_32 default 0 help This option specifies LOAPIC timer frequency in HZ. config PIT bool "PIT (i8253)" default n depends on X86_32 help This option selects legacy i8253 timer as system timer. config ARCV2_TIMER bool "ARC Timer" default y depends on ARC help This module implements a kernel device driver for the ARCv2 processor timer 0 and provides the standard "system clock driver" interfaces. config CORTEX_M_TIMER bool "Cortex-M Timer" default y depends on CPU_CORTEX_M help This module implements a kernel device driver for the Cortex-M processor systick timer and provides the standard "system clock driver" interfaces. endmenu