[ALSA] Add description about a new option of nm256 driver
Modules: Documentation
Add description about a new option of nm256 driver.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index 46a1250..9342846 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -954,6 +954,8 @@
use_cache - 0 or 1 (disabled by default)
vaio_hack - alias buffer_top=0x25a800
reset_workaround - enable AC97 RESET workaround for some laptops
+ reset_workaround2 - enable extended AC97 RESET workaround for some
+ other laptops
Module supports autoprobe and multiple chips (max 8).
@@ -984,6 +986,11 @@
workaround is enabled automatically. For other laptops with a
hard freeze, you can try reset_workaround=1 option.
+ Note: Dell Latitude CSx laptops have another problem regarding
+ AC97 RESET. On these laptops, reset_workaround2 option is
+ turned on as default. This option is worth to try if the
+ previous reset_workaround option doesn't help.
+
Note: This driver is really crappy. It's a porting from the
OSS driver, which is a result of black-magic reverse engineering.
The detection of codec will fail if the driver is loaded *after*