On 4/3/2024 16:52, Balasubramani Vivekanandan wrote:
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 b393ddbb7b35..d9d37f4971dd 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -466,6 +466,9 @@ 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;
}
--
-shekhar
