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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 2822a9f19844..9b15ac4f2fb6 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -1256,6 +1256,9 @@ static u32 skl_get_aux_send_ctl(struct intel_dp *intel_dp,
u32 unused)
{
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+ struct drm_i915_private *i915 =
+ to_i915(intel_dig_port->base.base.dev);
+ enum phy phy = intel_port_to_phy(i915, intel_dig_port->base.port);
u32 ret;
ret = DP_AUX_CH_CTL_SEND_BUSY |
@@ -1268,7 +1271,8 @@ static u32 skl_get_aux_send_ctl(struct intel_dp *intel_dp,
DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(32) |
DP_AUX_CH_CTL_SYNC_PULSE_SKL(32);
- if (intel_dig_port->tc_mode == TC_PORT_TBT_ALT)
+ if (intel_phy_is_tc(i915, phy) &&
+ intel_dig_port->tc_mode == TC_PORT_TBT_ALT)
ret |= DP_AUX_CH_CTL_TBT_IO;
return ret;