eDMA on i.MX93 platform requires the period size to be multiple of
maxburst.
Signed-off-by: Chancel Liu <chancel.liu@xxxxxxx>
---
sound/soc/fsl/fsl_xcvr.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/sound/soc/fsl/fsl_xcvr.c b/sound/soc/fsl/fsl_xcvr.c
index b794158a7876..2a78243df752 100644
--- a/sound/soc/fsl/fsl_xcvr.c
+++ b/sound/soc/fsl/fsl_xcvr.c
@@ -22,6 +22,7 @@
struct fsl_xcvr_soc_data {
const char *fw_name;
bool spdif_only;
+ bool use_edma;
};
struct fsl_xcvr {
@@ -538,6 +539,16 @@ static int fsl_xcvr_startup(struct snd_pcm_substream *substream,
return -EBUSY;
}
+ /*
+ * EDMA controller needs period size to be a multiple of
+ * tx/rx maxburst
+ */
+ if (xcvr->soc_data->use_edma)
+ snd_pcm_hw_constraint_step(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
+ tx ? xcvr->dma_prms_tx.maxburst :
+ xcvr->dma_prms_rx.maxburst);
+
switch (xcvr->mode) {
case FSL_XCVR_MODE_SPDIF:
case FSL_XCVR_MODE_ARC:
@@ -1207,6 +1218,7 @@ static const struct fsl_xcvr_soc_data fsl_xcvr_imx8mp_data = {
static const struct fsl_xcvr_soc_data fsl_xcvr_imx93_data = {
.spdif_only = true,
+ .use_edma = true,
};
static const struct of_device_id fsl_xcvr_dt_ids[] = {
--
2.25.1
