ASoC: imx-rpmsg: Set ignore_pmdown_time for dai_link

i.MX rpmsg sound cards work on codec slave mode. MCLK will be disabled
by CPU DAI driver in hw_free(). Some codec requires MCLK present at
power up/down sequence. So need to set ignore_pmdown_time to power down
codec immediately before MCLK is turned off.

Take WM8962 as an example, if MCLK is disabled before DAPM power down
playback stream, FIFO error will arise in WM8962 which will have bad
impact on playback next.

Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
Acked-by: Shengjiu Wang <shengjiu.wang@gmail.com>
Link: https://lore.kernel.org/r/20230913102656.2966757-1-chancel.liu@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/fsl/imx-rpmsg.c b/sound/soc/fsl/imx-rpmsg.c
index 3c7b95db2eacc182b9d56a71c0847e76a5c910e0..b578f9a32d7f1cd62e9bdf4d84b92063a74c334d 100644 (file)
--- a/sound/soc/fsl/imx-rpmsg.c
+++ b/sound/soc/fsl/imx-rpmsg.c
@@ -89,6 +89,14 @@ static int imx_rpmsg_probe(struct platform_device *pdev)
                            SND_SOC_DAIFMT_NB_NF |
                            SND_SOC_DAIFMT_CBC_CFC;
 
+       /*
+        * i.MX rpmsg sound cards work on codec slave mode. MCLK will be
+        * disabled by CPU DAI driver in hw_free(). Some codec requires MCLK
+        * present at power up/down sequence. So need to set ignore_pmdown_time
+        * to power down codec immediately before MCLK is turned off.
+        */
+       data->dai.ignore_pmdown_time = 1;
+
        /* Optional codec node */
        ret = of_parse_phandle_with_fixed_args(np, "audio-codec", 0, 0, &args);
        if (ret) {