Release Notes

Based on release	Yocto: Poky 5.0, BSP: NXP L6.6.52_2.2.0, Linux: lf-6.6.y
Release tag	mx93-yocto-scarthgap-6.6.52_2.2.0-v1.0
Release manifest	imx-6.6.52-2.2.0.xml
Date	03/28/2025
Supported platforms	VAR-SOM-MX93 / DART-MX93
SOM revision	VAR-SOM-MX93: v2.0A and higher, DART-MX93: 1.0 and higher
File System build system	Yocto Scarthgap
Recovery SD card link	mx93-yocto-scarthgap-6.6.52_2.2.0-v1.0.wic.zst
Recovery SD card SHA256	f34d7b84a5b2a53633f57c629ed911a6eb029920f530d075ef26d696a8326703
Cortex M33 U-Boot support	MCUXPRESSO_2.15.0_V1.1_VAR-SOM-MX93
Cortex M33 Linux remoteproc support	MCUXPRESSO_2.15.0_V1.1_VAR-SOM-MX93

Relevant git Repositories

Source	Repository	Branch	Commit ID
U-Boot	https://github.com/varigit/uboot-imx	lf_v2024.04_6.6.52-2.2.0_var01	d25f4be00dbaa8fd718c3136831952fd2b7a2aac
Kernel	https://github.com/varigit/linux-imx	lf-6.6.y_6.6.52-2.2.0_var01	b1465219ff2166525948cb7a752447faf88d9f05
freertos-variscite	https://github.com/varigit/freertos-variscite	mcuxpresso_sdk_2.15.x-var02	f617456ed00fc750ab1dea844d2f8ea66f9fa7aa
meta-variscite-bsp-imx	https://github.com/varigit/meta-variscite-bsp-imx	scarthgap_6.6.52-2.2.0_var01	ccbb4a0e722d4aa3600f17d684a990bb9f7c8617
meta-variscite-bsp-common	https://github.com/varigit/meta-variscite-bsp-common	scarthgap_6.6.52-2.2.0_var01	b8025d86014142c4a0e4239494c68090f65c8df4
meta-variscite-sdk-imx	https://github.com/varigit/meta-variscite-sdk-imx	scarthgap_6.6.52-2.2.0_var01	5930ec188681a7828c42c1aeb63e0b4dcfac122b
meta-variscite-sdk-common	https://github.com/varigit/meta-variscite-sdk-common	scarthgap_6.6.52-2.2.0_var01	bbdcc2936516be51e416c7affba7a8db1a633847

After downloading the image, visit our Recovery SD card guide to learn how to program a recovery SD card.

Change List	Description
Release 1.0
Initial Yocto Scarthgap 6.6.52_2.2.0 release	Based on NXP Yocto Scarthgap and NXP Linux Kernel 6.6.52
Major Updates
Secure Boot	AHAB support has been added
OP-TEE	OP-TEE support has been added
Known Issues
The following NXP BSP features are not supported yet:	- Encrypted FS
The following Variscite BSP features are not supported yet:	- DART-MX93 WBE device tree - DART-MX93 native CAN and SPI-CAN controller on DT8MCustomBoard
Using a m33 device tree	When a m33 device tree, e.g., imx93-var-som-symphony-m33.dtb or imx93-var-dart-dt8mcustomboard-m33.dtb, is used, the kernel boot is delayed by the OT service.
ttyLP6 conflicts with ML	Once ethos-u firmware is kicked on the CM33, the UART ttyLP6 is not available from linux.