On Tue, Sep 18, 2012 at 1:14 PM, Timur Tabi timur@freescale.com wrote:
Fabio Estevam wrote:
Can you please try to play a mono track on your PowerPC platform with these series applied?
I'm pretty sure this won't work. The SSI is programmed to expect a left and right sample. There is no code in fsl_ssi.c for checking the channel count and adjusting the hardware accordingly. I don't see any code like that in imx-ssi.c either, so I don't even know how it's supposed to work.
It works for me on mx6qsabrelite.
However, in order to play the mono track at the correct rate I also need:
--- a/sound/soc/codecs/sgtl5000.c +++ b/sound/soc/codecs/sgtl5000.c @@ -938,7 +938,7 @@ static struct snd_soc_dai_driver sgtl5000_dai = { .name = "sgtl5000", .playback = { .stream_name = "Playback", - .channels_min = 1, + .channels_min = 2, .channels_max = 2, /* * only support 8~48K + 96
I would like to understand when channels_min should be set to 1 or 2 in the platform driver (sound/soc/fsl/fsl_ssi.c in this case) or inside the codec. Could anyone clarify this, please?
Currently we have:
channels_min=1 for imx-ssi.c (FSL BSP also does the same) channels_min=2 for fsl_ssi.c
Which one is correct?
Adding Sascha, who originally used 'channels_min=1' for imx-ssi.c.
Regards,
Fabio Estevam