Hello Luc Roy,
The latest QorIQ SDK release v1.9 doesn't include LS1021AIOT.
Currently you could download LS1021AIoT SDK V1.8 release(for CPU v1.0) and LS1021A-IOT SDK 0.4(for CPU 2.0) from QorIQ LS1021A-IoT Gateway Reference Design|NXP.
If you require some specific Kernel patches from SDK 1.9 for LS1021, you could use the following method.
Please download SDK 1.9 source ISO, and set up the build environment for LS1021ATWR, run the command "bitbake virtual/kernel -c patch -f" to get the Kernel source in build_ls1021atwr/tmp/work/ls1021atwr-fsl-linux/linux-qoriq/3.12-r0/git, use “git log" command to get the patch list, and use "git format-patch <commit_id>" to get the specific patch.
Have a great day,
Yiping
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