# References ## Reference documents | Document title | DCN | | --- | --- | | [Qualcomm Linux Yocto Guide](https://docs.qualcomm.com/doc/80-80020-27) | 80-80020-27 | | [Qualcomm Linux Kernel Guide](https://docs.qualcomm.com/doc/80-80020-3) | 80-80020-3 | | [Qualcomm Linux Build Guide](https://docs.qualcomm.com/doc/80-80020-254) | 80-80020-254 | ## Acronyms and terms | Acronyms/terms | Definition | | --- | --- | | APM | Audio processing manager | | BSP | Board support package | | CI/CD | Continuous integration/continuous deployment | | DAI | Digital audio interface | | DCVS | Dynamic clock and voltage scaling | | DLKM | Dynamically-loadable kernel module | | DTB | Device tree blob | | DTBO | Device tree blob for overlay | | DTS | Device tree source | | DTSI | Device tree source include | | EL2 | Exception Level 2 | | FIT | Flattened image tree | | GLVND | OpenGL Vendor-Neutral Dispatch | | ICD | Installable client driver | | KAS | Configuration Automation System | | KGSL | Kernel graphics support layer | | KMD | Kernel mode driver | | KVM | Kernel-based virtual machine | | LTS | Long-term support | | LUN | Logical unit number | | PCAT | Product Configuration Assistant Tool | | QDL | Qualcomm Device Loader | | RPM | RPM Package Manager | | UEFI | Unified Extensible Firmware Interface | | UMD | User mode driver | | VFAT | Virtual file allocation table | Last Published: Mar 03, 2026 [Previous Topic Evaluate overlays using supported workflows](https://docs.qualcomm.com/bundle/publicresource/80-80020-150/topics/overlay_workflows.md)