ASoC: fsl_spdif: Add support for i.MX8ULP

On i.MX8ULP the spdif works with EDMA, so add compatible
string and soc specific data for i.MX8ULP.
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1631238562-27081-1-git-send-email-shengjiu.wang@nxp.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/fsl/fsl_spdif.c

@@ -186,6 +186,16 @@ static struct fsl_spdif_soc_data fsl_spdif_imx8mm = {
 	.tx_formats = FSL_SPDIF_FORMATS_PLAYBACK,
 };
 
+static struct fsl_spdif_soc_data fsl_spdif_imx8ulp = {
+	.imx = true,
+	.shared_root_clock = true,
+	.raw_capture_mode = false,
+	.interrupts = 1,
+	.tx_burst = 2,		/* Applied for EDMA */
+	.rx_burst = 2,		/* Applied for EDMA */
+	.tx_formats = SNDRV_PCM_FMTBIT_S24_LE,	/* Applied for EDMA */
+};
+
 /* Check if clk is a root clock that does not share clock source with others */
 static inline bool fsl_spdif_can_set_clk_rate(struct fsl_spdif_priv *spdif, int clk)
 {
@@ -1560,6 +1570,7 @@ static const struct of_device_id fsl_spdif_dt_ids[] = {
 	{ .compatible = "fsl,imx6sx-spdif", .data = &fsl_spdif_imx6sx, },
 	{ .compatible = "fsl,imx8qm-spdif", .data = &fsl_spdif_imx8qm, },
 	{ .compatible = "fsl,imx8mm-spdif", .data = &fsl_spdif_imx8mm, },
+	{ .compatible = "fsl,imx8ulp-spdif", .data = &fsl_spdif_imx8ulp, },
 	{}
 };
 MODULE_DEVICE_TABLE(of, fsl_spdif_dt_ids);