DisplayPort spec v1.1a, Table 2-52.
Signed-off-by: Adam Jackson <a...@redhat.com>
---
drivers/gpu/drm/i915/intel_dp.c | 5 ++---
1 files changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 77e40cf..78a75e8 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -656,10 +656,9 @@ intel_dp_mode_set(struct drm_encoder *encoder, struct
drm_display_mode *mode,
dp_priv->link_configuration[1] = dp_priv->lane_count;
/*
- * Check for DPCD version > 1.1,
- * enable enahanced frame stuff in that case
+ * Check for DPCD version > 1.1 and enhanced framing support
*/
- if (dp_priv->dpcd[0] >= 0x11) {
+ if (dp_priv->dpcd[0] >= 0x11 && (dp_priv->dpcd[2] &
DP_ENHANCED_FRAME_CAP)) {
dp_priv->link_configuration[1] |=
DP_LANE_COUNT_ENHANCED_FRAME_EN;
dp_priv->DP |= DP_ENHANCED_FRAMING;
}
--
1.7.0.1
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