[Letux-kernel] GTA04 Audio
H. Nikolaus Schaller
hns at goldelico.com
Tue Jan 10 19:43:14 CET 2017
> Am 10.01.2017 um 19:38 schrieb H. Nikolaus Schaller <hns at goldelico.com>:
> recently, I found that audio wasn't working any more on the
> By running our letux-4.6 binaries:
> I found that it is working there, when I run the ./twl4030
> demo script. This has been removed in newer kernel versions.
> There is no sound when using the (universal) ./twl script.
> It is universal in the sense that it can run the same
> demos on twl4030 and twl6040 (Pandaboard and Pyra).
> After copying back the old twl4030 script I also have
> sound on letux-4.10-rc2. There is only one minor
> root at letux:~# ./twl4030
> [ 122.537628] omap-mcbsp 49022000.mcbsp: TX Buffer Overflow!
> [ 123.733917] omap-mcbsp 49022000.mcbsp: TX Buffer Overflow!
> [ 124.601043] omap-mcbsp 49022000.mcbsp: TX Buffer Overflow!
> [ 125.232940] omap-mcbsp 49022000.mcbsp: TX Buffer Overflow!
> [ 125.338745] omap-mcbsp 49022000.mcbsp: TX Buffer Overflow!
> [ 126.163330] omap-mcbsp 49022000.mcbsp: TX Buffer Overflow!
> ^CAborted by signal Interrupt...
> root at letux:~#
> Anyways, this means that there is a bug in the ./twl script.
> Since it also reports TX Buffer Overflow, I think there is
> only a bug in the amixer setup:
There is an option -nhf (no handsfree) for the ./twl script
and the logic to enable/disable handsfree was negated.
Easy to fix :)
> PS: the GTA04A5 board work almost perfectly so far. USB works,
> internal/external GPS switch works. Audio and phone calls (software
> routing) can be tested tomorrow :)
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