X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=Documentation%2Fsound%2Falsa%2FProcfile.txt;h=25c5d648aef6c203ce98e8582f5070d4b9358ce3;hb=9213980e6a70d8473e0ffd4b39ab5b6caaba9ff5;hp=d686ea3c39eb5968bfb5362b445f3295109bdc70;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git

diff --git a/Documentation/sound/alsa/Procfile.txt b/Documentation/sound/alsa/Procfile.txt
index d686ea3c3..25c5d648a 100644
--- a/Documentation/sound/alsa/Procfile.txt
+++ b/Documentation/sound/alsa/Procfile.txt
@@ -131,6 +131,12 @@ card*/codec97#*/ac97#?-?
 card*/codec97#0/ac97#?-?+regs
 	Shows the AC97 register dump.  Useful for debugging.
 
+	When CONFIG_SND_DEBUG is enabled, you can write to this file for
+	changing an AC97 register directly.  Pass two hex numbers.
+	For example,
+
+	# echo 02 9f1f > /proc/asound/card0/codec97#0/ac97#0-0+regs
+
 
 Sequencer Information
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