[alsa-devel] Getting board to work on 2.6.30

Tony Hoyle tmh at nodomain.org
Wed Jun 24 04:37:39 CEST 2009

Tony Hoyle wrote:
> Hi,
> I'm trying to get sound working on a board I'm working with.  The sound 
> works correctly on but not 2.6.30.
OK I found the problem.  At some point the default configuration for the 
STAC92xx was changed and this broke the setup.  A simple patch reverts 
back to the 2.6.24 setting:

--- patch_sigmatel.c.old	2009-06-24 03:33:50.000000000 +0100
+++ patch_sigmatel.c	2009-06-24 03:34:19.000000000 +0100
@@ -1616,7 +1616,7 @@

  static unsigned int ref925x_pin_configs[8] = {
  	0x40c003f0, 0x424503f2, 0x01813022, 0x02a19021,
-	0x90a70320, 0x02214210, 0x01019020, 0x9033032e,
+	0x90a70320, 0x02214210, 0x400003f1, 0x9033032e,

  static unsigned int stac925xM1_pin_configs[8] = {

I have little (well, none actually) understanding of what these values 
to, but presumably it was changed for a reason... is there a case for a 
new model here?  Unfortunately I'm not sure how to detect this model.. 
other ones seem to be done using manufacturer specific codes, but there 
are none on this board...


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