ALSA: hda - Add description of bdl_pos_adj option

Added a brief description of the new bdl_pos_adj option to
ALSA-Configuration.txt.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

1 files changed, 3 insertions, 0 deletions

diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index ab28f7b62f29..72aff61e7315 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -755,6 +755,9 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     model       - force the model name
     position_fix - Fix DMA pointer (0 = auto, 1 = use LPIB, 2 = POSBUF)
     probe_mask  - Bitmask to probe codecs (default = -1, meaning all slots)
+    bdl_pos_adj - Specifies the DMA IRQ timing delay in samples.
+                Passing -1 will make the driver to choose the appropriate
+                value based on the controller chip.
     
     [Single (global) options]
     single_cmd  - Use single immediate commands to communicate with