NXP MIMXRT1060-EVK

Overview

This is a set of Bridle’s extension to the original Zephyr upstream board NXP MIMXRT1060-EVK with some adaptions and improvement on Kconfig and Devicetree level.

List of extensions

Kconfig

activate self powered USB explicitly and set the maximum of electrical current consumption to 0㎃:

NXP MIMXRT1060-EVK and MIMXRT1060-EVKB

Kconfig.defconfig

config USB_SELF_POWERED
	default y
	depends on USB_DEVICE_STACK && (BOARD_MIMXRT1060_EVK || BOARD_MIMXRT1060_EVKB)

config USB_MAX_POWER
	default 0 if BOARD_MIMXRT1060_EVK	# 0mA (self powered)
	default 0 if BOARD_MIMXRT1060_EVKB	# 0mA (self powered)
	depends on USB_DEVICE_STACK && (BOARD_MIMXRT1060_EVK || BOARD_MIMXRT1060_EVKB)

change log level and startup delay only in case of use the native USB device port nxp,ehci with CDC-ACM UART zephyr,cdc-acm-uart as Zephyr console:

NXP MIMXRT1060-EVK and MIMXRT1060-EVKB

Kconfig.defconfig

# Workaround for not being able to have commas in macro arguments
DT_CHOSEN_Z_CONSOLE := zephyr,console
DT_COMPAT_Z_CDC_ACM_UART := zephyr,cdc-acm-uart
DT_COMPAT_NXP_USB := nxp,ehci

# Macros to shorten Kconfig expressions
DT_CHOSEN_CONSOLE_NODE := $(dt_chosen_path,$(DT_CHOSEN_Z_CONSOLE))
DT_CHOSEN_CONSOLE_PARENT := $(dt_node_parent,$(DT_CHOSEN_CONSOLE_NODE))

if (BOARD_MIMXRT1060_EVK || BOARD_MIMXRT1060_EVKB) && \
	$(dt_chosen_enabled,$(DT_CHOSEN_Z_CONSOLE)) && \
	$(dt_compat_on_bus,$(DT_COMPAT_Z_CDC_ACM_UART),usb) && \
	$(dt_node_has_compat,$(DT_CHOSEN_CONSOLE_PARENT),$(DT_COMPAT_NXP_USB))

# Logger cannot use itself to log
choice USB_CDC_ACM_LOG_LEVEL_CHOICE
	default USB_CDC_ACM_LOG_LEVEL_OFF
	depends on LOG
endchoice

# Set USB log level to error only
choice USB_DEVICE_LOG_LEVEL_CHOICE
	default USB_DEVICE_LOG_LEVEL_ERR
	depends on LOG
endchoice

# Wait 4000ms at startup for logging
config LOG_PROCESS_THREAD_STARTUP_DELAY_MS
	default 4000
	depends on LOG

# Wait 4000ms at startup for USB enumeration on host side
config BOOT_DELAY
	default 4000

endif # zephyr,cdc-acm-uart

Devicetree

set default entries for model and compatible of the boards:

NXP MIMXRT1060-EVK and MIMXRT1060-EVKB

mimxrt1060_evk.dtsi

/ {
	model = "NXP MIMXRT1060-EVK board @ UART Concole";
	compatible = "nxp,mimxrt1062", "nxp,mimxrt1062-uartcons";
};

FlexPWM not routed to the green user LED LED1 on the EVK B revision, thus why board DTS disables &flexpwm2_pwm3 but neither related &pwmleds node nor alias:
NXP MIMXRT1060-EVKB
mimxrt1060_evkb.overlay

/ { aliases { /delete-property/ pwm-led0; }; /delete-node/ pwmleds; };

add a zephyr,flash-disk node linked to the partition = <&storage_partition>; with the hard defined mass storage disk name disk-name = "NAND"; – also set the mass storage disk name hard on Kconfig level by a new board config file with CONFIG_MASS_STORAGE_DISK_NAME:

NXP MIMXRT1060-EVK and MIMXRT1060-EVKB

mimxrt1060_evk.dtsi

/ {
	msc_disk0 {
		compatible = "zephyr,flash-disk";
		partition = <&storage_partition>;
		disk-name = "NAND"; // CONFIG_MASS_STORAGE_DISK_NAME
		cache-size = <4096>;
	};
};

Kconfig.defconfig

#
# WARNINGS and NOTES for the disk name (CONFIG_MASS_STORAGE_DISK_NAME):
#
# 1. In principle, the disk name can be freely selected. If this is changed
#    here in Kconfig, then the corresponding property "disk-name" in the
#    corresponding Devicetree node with the compatibility "zephyr,flash-disk"
#    must also be adapted. This should be improved in the future, as it
#    represents double data storage.
#
# 2. If the FAT file system is used, the disk name defined here will also
#    be used as the mountpoint. The currently used FATFS implementation
#    automatically enters the disk name as mountpoint, which means that
#    an application can only reach the correct disk via the exact same
#    mountpoint name. Unfortunately, the current example application under
#    "zephyr/samples/subsys/usb/mass" is hard-coded at this point and only
#    expects the (disk) mountpoint name "NAND" and nothing else. This must
#    be changed, as this implicitly represents a special configuration at
#    source code level.
#

config MASS_STORAGE_DISK_NAME
	default "NAND" if (BOARD_MIMXRT1060_EVK || BOARD_MIMXRT1060_EVKB)
	depends on USB_DEVICE_STACK && USB_MASS_STORAGE