On Tue, Sep 22, 2026 at 11:34:27AM +0800, shengjiu.wang at oss.nxp.com wrote:
> From: Shengjiu Wang <shengjiu.wang at nxp.com>
>
> The i.MX ASRC hardware supports three independent conversion pairs
> (A, B, C). The driver previously registered a single DAI with generic
> stream names "ASRC-Playback" and "ASRC-Capture", which prevents
> multiple independent conversion paths from being used simultaneously.
>
> Replace the single fsl_asrc_dai instance with an array of three DAI
> drivers to allow up to three independent conversion paths to be active
> at the same time:
>
> asrc-0 -- ASRC-Playback / ASRC-Capture (backward compatible)
> asrc-1 -- ASRC1-Playback / ASRC1-Capture
> asrc-2 -- ASRC2-Playback / ASRC2-Capture
>
> asrc-0 retains the original generic stream names to preserve backward
> compatibility with existing machine drivers and board configurations.
> Each DAI retains the same channel, rate and format capabilities as the
> original. Update the devm_snd_soc_register_component() call to register
> all three DAIs.
>
> Signed-off-by: Shengjiu Wang <shengjiu.wang at nxp.com>
> ---
Reviewed-by: Frank Li <Frank.Li at nxp.com>
> sound/soc/fsl/fsl_asrc.c | 89 +++++++++++++++++++++++++++++++---------
> 1 file changed, 69 insertions(+), 20 deletions(-)
>
> diff --git a/sound/soc/fsl/fsl_asrc.c b/sound/soc/fsl/fsl_asrc.c
> index 6007786aca66..56604fa1613a 100644
> --- a/sound/soc/fsl/fsl_asrc.c
> +++ b/sound/soc/fsl/fsl_asrc.c
> @@ -792,27 +792,76 @@ static const struct snd_soc_dai_ops fsl_asrc_dai_ops = {
> SNDRV_PCM_FMTBIT_S16_LE | \
> SNDRV_PCM_FMTBIT_S24_3LE)
>
> -static struct snd_soc_dai_driver fsl_asrc_dai = {
> - .playback = {
> - .stream_name = "ASRC-Playback",
> - .channels_min = 1,
> - .channels_max = 10,
> - .rate_min = 5512,
> - .rate_max = 192000,
> - .rates = SNDRV_PCM_RATE_KNOT,
> - .formats = FSL_ASRC_FORMATS |
> - SNDRV_PCM_FMTBIT_S8,
> +static struct snd_soc_dai_driver fsl_asrc_dai[] = {
> + {
> + .name = "asrc-0",
> + .playback = {
> + .stream_name = "ASRC-Playback",
> + .channels_min = 1,
> + .channels_max = 10,
> + .rate_min = 5512,
> + .rate_max = 192000,
> + .rates = SNDRV_PCM_RATE_KNOT,
> + .formats = FSL_ASRC_FORMATS |
> + SNDRV_PCM_FMTBIT_S8,
> + },
> + .capture = {
> + .stream_name = "ASRC-Capture",
> + .channels_min = 1,
> + .channels_max = 10,
> + .rate_min = 5512,
> + .rate_max = 192000,
> + .rates = SNDRV_PCM_RATE_KNOT,
> + .formats = FSL_ASRC_FORMATS,
> + },
> + .ops = &fsl_asrc_dai_ops,
> + },
> + {
> + .name = "asrc-1",
> + .playback = {
> + .stream_name = "ASRC1-Playback",
> + .channels_min = 1,
> + .channels_max = 10,
> + .rate_min = 5512,
> + .rate_max = 192000,
> + .rates = SNDRV_PCM_RATE_KNOT,
> + .formats = FSL_ASRC_FORMATS |
> + SNDRV_PCM_FMTBIT_S8,
> + },
> + .capture = {
> + .stream_name = "ASRC1-Capture",
> + .channels_min = 1,
> + .channels_max = 10,
> + .rate_min = 5512,
> + .rate_max = 192000,
> + .rates = SNDRV_PCM_RATE_KNOT,
> + .formats = FSL_ASRC_FORMATS,
> + },
> + .ops = &fsl_asrc_dai_ops,
> },
> - .capture = {
> - .stream_name = "ASRC-Capture",
> - .channels_min = 1,
> - .channels_max = 10,
> - .rate_min = 5512,
> - .rate_max = 192000,
> - .rates = SNDRV_PCM_RATE_KNOT,
> - .formats = FSL_ASRC_FORMATS,
> + {
> + .name = "asrc-2",
> + .playback = {
> + .stream_name = "ASRC2-Playback",
> + .channels_min = 1,
> + .channels_max = 10,
> + .rate_min = 5512,
> + .rate_max = 192000,
> + .rates = SNDRV_PCM_RATE_KNOT,
> + .formats = FSL_ASRC_FORMATS |
> + SNDRV_PCM_FMTBIT_S8,
> + },
> + .capture = {
> + .stream_name = "ASRC2-Capture",
> + .channels_min = 1,
> + .channels_max = 10,
> + .rate_min = 5512,
> + .rate_max = 192000,
> + .rates = SNDRV_PCM_RATE_KNOT,
> + .formats = FSL_ASRC_FORMATS,
> + },
> + .ops = &fsl_asrc_dai_ops,
> },
> - .ops = &fsl_asrc_dai_ops,
> };
>
> static bool fsl_asrc_readable_reg(struct device *dev, unsigned int reg)
> @@ -1393,7 +1442,7 @@ static int fsl_asrc_probe(struct platform_device *pdev)
> goto err_pm_get_sync;
>
> ret = devm_snd_soc_register_component(&pdev->dev, &fsl_asrc_component,
> - &fsl_asrc_dai, 1);
> + fsl_asrc_dai, ARRAY_SIZE(fsl_asrc_dai));
> if (ret) {
> dev_err(&pdev->dev, "failed to register ASoC DAI\n");
> goto err_pm_get_sync;
> --
> 2.34.1
>
>