+static struct snd_pcm_hardware snd_fsl_hardware = { + .info = SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_PAUSE | + SNDRV_PCM_INFO_RESUME, + .formats = SNDRV_PCM_FMTBIT_S16_LE, + .rate_min = 8000, + .channels_min = 2, + .channels_max = 2, + .buffer_bytes_max = FSL_SAI_DMABUF_SIZE, + .period_bytes_min = 4096, + .period_bytes_max = FSL_SAI_DMABUF_SIZE / TCD_NUMBER, + .periods_min = TCD_NUMBER, + .periods_max = TCD_NUMBER, + .fifo_size = 0, +};
There's a patch in -next that lets the generic dmaengine code figure out some settings from the dmacontroller rather than requiring the driver to explicitly provide configuration - it's "ASoC: dmaengine-pcm: Provide default config". Please update your driver to use this, or let's work out what it doesn't do any try to fix it.
I couldn't find the patch in the next and other trees. Does this patch has been submitted to the -next tree ? Or could you tell me how to find the patch please? Thanks very much.