zephyr/drivers/ethernet/Kconfig.mcux

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# ETH_MCUX Ethernet driver configuration options
# Copyright (c) 2016-2017 ARM Ltd
# SPDX-License-Identifier: Apache-2.0
menuconfig ETH_MCUX
bool "MCUX Ethernet driver"
depends on HAS_MCUX_ENET
select NOCACHE_MEMORY if HAS_MCUX_CACHE
select ARM_MPU if CPU_CORTEX_M7
select NET_POWER_MANAGEMENT if PM_DEVICE
help
Enable MCUX Ethernet driver. Note, this driver performs one shot PHY
setup. There is no support for PHY disconnect, reconnect or
configuration change.
if ETH_MCUX
config ETH_MCUX_PROMISCUOUS_MODE
bool "Enable promiscuous mode"
help
Place the Ethernet receiver in promiscuous mode. This may be useful
for debugging and not needed for normal work.
config ETH_MCUX_RMII_EXT_CLK
bool "Enable RMII clock from external sources"
help
Setting this option will configure MCUX clock block to feed RMII
reference clock from external source (ENET_1588_CLKIN)
config ETH_MCUX_NO_PHY_SMI
bool "Do not use SMI for PHY communication"
help
Some PHY devices, with DSA capabilities do not use SMI for
communication with MAC ENET controller. Other busses - like SPI
or I2C are used instead.
config ETH_MCUX_PHY_TICK_MS
int "PHY poll period (ms)"
default 1000
range 100 30000
help
Set the PHY status polling period.
config ETH_MCUX_PHY_EXTRA_DEBUG
bool "Enable additional detailed PHY debug"
help
Enable additional PHY related debug information related to
PHY status polling.
config ETH_MCUX_RX_BUFFERS
int "Number of MCUX RX buffers"
default 1
range 1 16
help
Set the number of RX buffers provided to the MCUX driver.
config ETH_MCUX_TX_BUFFERS
int "Number of MCUX TX buffers"
default 1
range 1 1
help
Set the number of TX buffers provided to the MCUX driver.
config ETH_MCUX_HW_ACCELERATION
bool "Enable hardware acceleration"
help
Enable hardware acceleration for the following:
- IPv4, UDP and TCP checksum (both Rx and Tx)
config PTP_CLOCK_MCUX
bool "MCUX PTP clock driver support"
Kconfig: Use the first default with a satisfied condition Up until now, Zephyr has patched Kconfig to use the last 'default' with a satisfied condition, instead of the first one. I'm not sure why the patch was added (it predates Kconfiglib), but I suspect it's related to Kconfig.defconfig files. There are at least three problems with the patch: 1. It's inconsistent with how Kconfig works in other projects, which might confuse newcomers. 2. Due to oversights, earlier 'range' properties are still preferred, as well as earlier 'default' properties on choices. In addition to being inconsistent, this makes it impossible to override 'range' properties and choice 'default' properties if the base definition of the symbol/choice already has 'range'/'default' properties. I've seen errors caused by the inconsistency, and I suspect there are more. 3. A fork of Kconfiglib that adds the patch needs to be maintained. Get rid of the patch and go back to standard Kconfig behavior, as follows: 1. Include the Kconfig.defconfig files first instead of last in Kconfig.zephyr. 2. Include boards/Kconfig and arch/<arch>/Kconfig first instead of last in arch/Kconfig. 3. Include arch/<arch>/soc/*/Kconfig first instead of last in arch/<arch>/Kconfig. 4. Swap a few other 'source's to preserve behavior for some scattered symbols with multiple definitions. Swap 'source's in some no-op cases too, where it might match the intent. 5. Reverse the defaults on symbol definitions that have more than one default. Skip defaults that are mutually exclusive, e.g. where each default has an 'if <some board>' condition. They are already safe. 6. Remove the prefer-later-defaults patch from Kconfiglib. Testing was done with a Python script that lists all Kconfig symbols/choices with multiple defaults, along with a whitelist of fixed symbols. The script also verifies that there are no "unreachable" defaults hidden by defaults without conditions As an additional test, zephyr/.config was generated before and after the change for several samples and checked to be identical (after sorting). This commit includes some default-related cleanups as well: - Simplify some symbol definitions, e.g. where a default has 'if FOO' when the symbol already has 'depends on FOO'. - Remove some redundant 'default ""' for string symbols. This is the implicit default. Piggyback fixes for swapped ranges on BT_L2CAP_RX_MTU and BT_L2CAP_TX_MTU (caused by confusing inconsistency). Piggyback some fixes for style nits too, e.g. unindented help texts. Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2018-07-30 10:57:47 +02:00
default y
depends on PTP_CLOCK || (NET_PKT_TIMESTAMP && NET_GPTP)
help
Enable MCUX PTP clock support.
if PTP_CLOCK_MCUX
config ETH_MCUX_PTP_CLOCK_SRC_HZ
int "Frequency of the clock source for the PTP timer"
default 50000000
help
Set the frequency in Hz sourced to the PTP timer.
If the value is set properly, the timer will be accurate.
endif # PTP_CLOCK_MCUX
endif # ETH_MCUX