From: Mika Kuoppala <mika.kuopp...@intel.com>
Add description for drm_kms_helper.poll module parameter introduced
by commit: e58f637bb96d5a0ae0919b9998b891d1ba7e47c9
Signed-off-by: Mika Kuoppala <mika.kuopp...@intel.com>
---
Documentation/kernel-parameters.txt | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/Documentation/kernel-parameters.txt
b/Documentation/kernel-parameters.txt
index f777fa9..ad97749 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -741,6 +741,17 @@ bytes respectively. Such letter suffixes can also be
entirely omitted.
if its name and a colon are prepended to the EDID
name.
+ drm_kms_helper.poll=
+ Polling for connected VGA devices on older systems
+ can be quite expensive, causing latencies of
+ several hundred milliseconds. This will cause visible
+ stalls, for example in video playback. If you
+ experience stalls in display output occurring every
+ 10 seconds (DRM_OUTPUT_POLL_PERIOD=(10*HZ)), disabling
+ polling might help.
+ Format: <bool> (1/Y/y=enable, 0/N/n=disable)
+ default: enabled
+
dscc4.setup= [NET]
dyndbg[="val"] [KNL,DYNAMIC_DEBUG]
--
1.7.9.5
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