Claude review: drm/i915/vrr: Avoid vrr for PCON with HDMI2.1 sink

Claude Code Review Bot
2026-04-12T02:51:26Z

Patch Review

**R-b: Ville Syrjala**

Adds `drm_dp_is_branch()` check to `intel_vrr_is_capable()` to reject VRR on all DP branch devices. The commit message explains PCON VRR is unimplemented. The TODO is appropriate.

One consideration: the MST check (`if (connector->mst.dp) return false;`) is already above this, so this only catches non-MST branch devices. That's correct.

No issues.