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-rw-r--r--drivers/gpu/drm/i915/display/intel_dp.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 025ba35a2583..5aabd8ec1015 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -315,7 +315,11 @@ static int icl_max_source_rate(struct intel_dp *intel_dp)
static int ehl_max_source_rate(struct intel_dp *intel_dp)
{
- if (intel_dp_is_edp(intel_dp))
+ struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+ struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
+ enum phy phy = intel_port_to_phy(dev_priv, dig_port->base.port);
+
+ if (intel_dp_is_edp(intel_dp) || is_low_voltage_sku(dev_priv, phy))
return 540000;
return 810000;