From 98b1c87a5e51b86d1fad390ad4756cc2bc03cd05 Mon Sep 17 00:00:00 2001 From: Balasubramani Vivekanandan Date: Tue, 30 Apr 2024 10:28:46 -0700 Subject: [PATCH] drm/i915/xe2hpd: Set maximum DP rate to UHBR13.5 Max supported speed by xe2hpd is UHBR13.5. Limit the max DP source rate to it. Bspec: 67066 Signed-off-by: Balasubramani Vivekanandan Reviewed-by: Shekhar Chauhan Signed-off-by: Radhakrishna Sripada Link: https://patchwork.freedesktop.org/patch/msgid/20240430172850.1881525-16-radhakrishna.sripada@intel.com --- 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 e05e25cd4a94..486361eb0070 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -477,6 +477,9 @@ 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