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-rw-r--r--drivers/gpu/drm/i915/intel_sdvo.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index 55b8beb..dba5147 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -1617,6 +1617,10 @@ static enum drm_connector_status intel_sdvo_detect(struct drm_connector *connect
intel_sdvo_write_cmd(intel_output,
SDVO_CMD_GET_ATTACHED_DISPLAYS, NULL, 0);
+ if (sdvo_priv->is_tv) {
+ /* add 30ms delay when the output type is SDVO-TV */
+ mdelay(30);
+ }
status = intel_sdvo_read_response(intel_output, &response, 2);
DRM_DEBUG_KMS("SDVO response %d %d\n", response & 0xff, response >> 8);