Snapdragon X support for the Yoga Slim 7x is merged on the n1x branch
Pull request 14759 merges Snapdragon X and Yoga Slim 7x support into the n1x branch, not into quattro. A Qualcomm check keeps other machines as they are. This merge is not in version 4.0.4.
birkskyum opened the pull request, and ryanrhughes merged it. The pull request says the files include a Qualcomm check that reads the device tree, Windows-on-ARM device trees in the boot image, the kernel parameters those laptops need, firmware setup, the Adreno graphics driver on Qualcomm systems, the Yoga Slim 7x board setup, and tests.
The pull request says package-manager changes from the Dragon line are left out, because n1x already has its own. It says an Arch Linux ARM kernel still needs a Thunderbolt module setting that skips a missing module, and that this pull request does not include that setting. The author wrote that the setting goes away with linux-omarchy.