HCL/Card Readers
From ArchWiki
This page is inteded to be a list of flash media card readers (ie. Secure Digital, Compact Flash, etc) and their compatibility with Arch Linux. Please add any relevant information you may know about other hardware that fits this category.
Realtek
RTS5229
This SD Card reader is found in some Lenovo laptops. As of 3.8 a 3rd party module is not needed, device is accessible @ /dev/mmcX