Intel Alder Lake-P CPUs to Feature Gen13 Display Engine w/ 16K Resolution Support

Intel’s (Open-Source) graphics driver team just posted the latest update for the Linux Kernel which adds support for the upcoming Alder Lake-P integrated graphics. It appears that the 12th Gen mobile processors will feature the Gen 12 Xe-LP graphics architecture, however, with the Display Engine upgrade to 13 (Display13/Xe_LPD).

This is a bit surprising as all Tiger Lake, Rocket Lake, Alder Lake-S, and DG1 all come with the default Gen 12-based GPU along with the Display 12, making ADL-P the only Intel lineup to feature the upgraded display engine. Some of the primary changes with Display 13 include support for 16K resolution, increased bandwidth requirement when Virtualization is active (VT-d) and certain power efficiency improvements.

  drm/i915/xelpd: add XE_LPD display characteristics
  drm/i915/xelpd: Handle proper AUX interrupt bits
  drm/i915/xelpd: Enhanced pipe underrun reporting
  drm/i915/xelpd: Define plane capabilities
  drm/i915/xelpd: Handle new location of outputs D and E
  drm/i915/xelpd: Add XE_LPD power wells
  drm/i915/xelpd: Increase maximum watermark lines to 255
  drm/i915/xelpd: Required bandwidth increases when VT-d is active
  drm/i915/xelpd: Add Wa_14011503030
  drm/i915/adl_p: Add dedicated SAGV watermarks
  drm/i915/adl_p: Extend PLANE_WM bits for blocks & lines



Computer Engineering dropout (3 years), writer, journalist, and amateur poet. I started my first technology blog, Techquila while in college to address my hardware passion. Although largely successful, it was a classic example of too many people trying out multiple different things but getting nothing done. Left in late 2019 and been working on Hardware Times ever since.
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