Max supported speed by xe2hpd is UHBR13.5. Limit the max DP source rate to it. Bspec: 67066 Signed-off-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@xxxxxxxxx> Reviewed-by: Shekhar Chauhan <shekhar.chauhan@xxxxxxxxx> --- drivers/gpu/drm/i915/display/intel_dp.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 163da48bc406..23a4c5cca8e1 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -474,6 +474,9 @@ static int mtl_max_source_rate(struct intel_dp *intel_dp) if (intel_encoder_is_c10phy(encoder)) return 810000; + if (DISPLAY_VER_FULL(to_i915(encoder->base.dev)) == IP_VER(14, 1)) + return 1350000; + return 2000000; } -- 2.25.1
