From fac58baf8fcfcd7481e8f6d60206ce2a47c1476c Mon Sep 17 00:00:00 2001
From: Chancel Liu <chancel.liu@nxp.com>
Date: Wed, 13 Sep 2023 18:26:56 +0800
Subject: [PATCH] ASoC: imx-rpmsg: Set ignore_pmdown_time for dai_link
Git-commit: fac58baf8fcfcd7481e8f6d60206ce2a47c1476c
Patch-mainline: v6.6-rc3
References: git-fixes
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>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
sound/soc/fsl/imx-rpmsg.c | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/sound/soc/fsl/imx-rpmsg.c
+++ b/sound/soc/fsl/imx-rpmsg.c
@@ -66,6 +66,14 @@ static int imx_rpmsg_probe(struct platfo
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS;
+ /*
+ * 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) {