AMD Submits RDNA 5 GPU Patches to Linux Kernel, Initiates DCN 6 Display Engine Support
AMD has submitted its latest batch of RDNA 5 GPU IP patches to the Linux kernel, formally beginning support for the sixth-generation Display Core Next (DCN6) engine. DCN6 corresponds to the GFX13 architecture, the RDNA 5 GPU family. The patches introduce a scaling integrity and cost evaluation surface, a UPSP pre-scaling unit for 4:2:0 and 4:2:2 content, and new pixel format support. This marks DCN6's first appearance in kernel code. AMD has not disclosed a mass-production shipping timeline for RDNA 5.
AMD has recently submitted its latest batch of patches for RDNA 5 GPU IP to the Linux kernel, formally beginning support for the sixth-generation Display Core Next (DCN6) display engine.
The DCN6 display engine corresponds to AMD's GFX13 architecture codename, namely the RDNA 5 GPU family. The DCN display engine handles a range of tasks from display output, image scaling, and display aspect ratio processing to pixel-level operations, and is a core component in the graphics output chain of RDNA-series graphics cards. In this update, AMD introduced a new scaling integrity and cost evaluation surface, and added a UPSP pre-scaling unit to sample 4:2:0 and 4:2:2 content before formal scaling, while also adding support for new pixel formats within the display logic.
This batch of patches marks the first appearance of the DCN6 display engine in Linux kernel code. AMD has published very little documentation on versions between DCN 4.2.1 and DCN 6.0.0, with only a single mention of the DCN5 display engine. The specific timeline for mass production and shipping of RDNA 5 GPUs has not yet been made public.
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