A round of Intel graphics driver updates were sent today to DRM-Next in staging ahead of April’s Linux 7.1 merge window. The changes in this pull aren’t too particularly exciting with a lot of code refactoring and other work, but there are preparations made for supporting UHBR DP tunnels.
Intel engineer Jani Nikula sent out today’s drm-intel-next pull request. This pull adds C10/C20/LT PHY PLL divider verification support, Panel Self Refresh changes for Lunar Lake and newer, Display Stream Compression (DSC) improvements, and many bug fixes.
While not over the finish line yet for end users, today’s pull request also brings preparations for the Intel kernel graphics driver for UHBR DP tunnels, tunneling for Ultra-High Bit Rate (UHBR) DisplayPort (DP). UHBR with DP 2.0/2.1 allows for up to 80 Gbps bandwidth at 8K Or 4K@240. The UHBR DP tunnels allows for higher bandwidth DP tunnels for USB4 / Thunderbolt with higher resolution or higher refresh rate content.
Intel engineer Imre Deak worked through a lot of the code for improving the Intel display code for properly detecting DisplayPort Tunnels on Thunderbolt display links and enabling bandwidth allocation mode as part of helping to ensure the maximum resolution in any scenario for displays sharing the bandwidth on these USB4/Thunderbolt links.
More details on these latest drm-intel-next changes ahead of Linux 7.1 via this pull request.
