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ASoC: imx-rpmsg: Set ignore_pmdown_time for dai_link

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[ Upstream commit fac58baf8f ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Chancel Liu 2023-09-13 18:26:56 +08:00 committed by Greg Kroah-Hartman
parent 1c88886587
commit 28c3693249
1 changed files with 8 additions and 0 deletions
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8
sound/soc/fsl/imx-rpmsg.c
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@ -88,6 +88,14 @@ 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) {