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-rw-r--r--drivers/gpu/drm/i915/display/intel_bios.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index 28bdb936cd1f..4c543e8205ca 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -2676,6 +2676,14 @@ static void print_ddi_port(const struct intel_bios_encoder_data *devdata,
drm_dbg_kms(&i915->drm,
"Port %c VBT DP max link rate: %d\n",
port_name(port), dp_max_link_rate);
+
+ /*
+ * FIXME need to implement support for VBT
+ * vswing/preemph tables should this ever trigger.
+ */
+ drm_WARN(&i915->drm, child->use_vbt_vswing,
+ "Port %c asks to use VBT vswing/preemph tables\n",
+ port_name(port));
}
static void parse_ddi_port(struct intel_bios_encoder_data *devdata)