AMD's RDNA 5 Inches Closer as GFX13 Support Lands in Linux Driver Patches
AMD has begun integrating its next-generation graphics IP into the Linux kernel, releasing a series of eight patches that add GFX13 support to the open-source AMDGPU driver. These patches, submitted to the mailing list on November 9 by AMDGPU maintainer Alex Deucher, contain over 12,600 lines of code, excluding the typically large header files. GFX13 is anticipated to be the graphics core for RDNA 5, although AMD has not officially confirmed this connection. However, since GFX12 has been linked to RDNA 4, it is assumed that GFX13 is the correct codename for RDNA 5.
The patches introduce version 13 of three IP blocks: the "graphics" GFX block itself, the MicroEngine Scheduler (MES), and the IMU. On the compute side, the AMDKFD driver gains initial GC 13 support, a CWSR trap handler for saving and restoring compute wave state, and a temporary change that disables queue reset in the topology. The final patch enables the MGCG, CGCG, and CGLS clock gating features, which reduce power consumption when parts of the GPU are idle. Interestingly, the series mentions two specific targets, GFX 13.0.1 and GFX 13.0.4, indicating that AMD is preparing at least two graphics IP configurations. These version numbers do not correspond to any specific GPU models, so it is unclear which products they relate to. RDNA 5 is expected to be a significant advancement over RDNA 4, necessitating numerous patches to add support.
The patches introduce version 13 of three IP blocks: the "graphics" GFX block itself, the MicroEngine Scheduler (MES), and the IMU. On the compute side, the AMDKFD driver gains initial GC 13 support, a CWSR trap handler for saving and restoring compute wave state, and a temporary change that disables queue reset in the topology. The final patch enables the MGCG, CGCG, and CGLS clock gating features, which reduce power consumption when parts of the GPU are idle. Interestingly, the series mentions two specific targets, GFX 13.0.1 and GFX 13.0.4, indicating that AMD is preparing at least two graphics IP configurations. These version numbers do not correspond to any specific GPU models, so it is unclear which products they relate to. RDNA 5 is expected to be a significant advancement over RDNA 4, necessitating numerous patches to add support.
















































