Re: [alsa-devel] [PATCH v3 1/6] ASoC: fsl_ssi: Real hardware channels max number is 32

Arnaud Mouiche wrote:

The max number of slots in TDM mode is 32:

• Frame Rate Divider Control is a 5bit value
• Time slot mask registers control 32 slots.

Signed-off-by: Arnaud Mouichearnaud.mouiche@invoxia.com

sound/soc/fsl/fsl_ssi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index 40dfd8a..cfc78b8 100644 --- a/sound/soc/fsl/fsl_ssi.c +++ b/sound/soc/fsl/fsl_ssi.c @@ -1167,14 +1167,14 @@ static struct snd_soc_dai_driver fsl_ssi_dai_template = { .playback = { .stream_name = "CPU-Playback", .channels_min = 1,

• .channels_max = 2,
  

• .channels_max = 32,
  

TDM mode is not normally used. What happens if we're not in TDM mode, and the user tries to start a stream with more than 2 channels?