From 055b082156704b85a059770359d6cdedfb24831d Mon Sep 17 00:00:00 2001 From: Shengjiu Wang Date: Tue, 7 Jul 2020 16:54:25 +0800 Subject: ASoC: fsl_spdif: Clear the validity bit for TX In IEC958 spec, "The validity bit is logical "0" if the information in the main data field is reliable, and it is logical "1" if it is not". The default value of "ValCtrl" is zero, which means "Outgoing Validity always set", then all the data is not reliable, then some spdif sink device will drop the data. So set "ValCtrl" to 1, that is to clear "Outgoing Validity" in default. Signed-off-by: Shengjiu Wang Link: https://lore.kernel.org/r/1594112066-31297-2-git-send-email-shengjiu.wang@nxp.com Signed-off-by: Mark Brown --- sound/soc/fsl/fsl_spdif.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'sound/soc/fsl/fsl_spdif.c') diff --git a/sound/soc/fsl/fsl_spdif.c b/sound/soc/fsl/fsl_spdif.c index 9fb95c6ee7ba..576370dc6e70 100644 --- a/sound/soc/fsl/fsl_spdif.c +++ b/sound/soc/fsl/fsl_spdif.c @@ -985,6 +985,10 @@ static int fsl_spdif_dai_probe(struct snd_soc_dai *dai) snd_soc_add_dai_controls(dai, fsl_spdif_ctrls, ARRAY_SIZE(fsl_spdif_ctrls)); + /*Clear the val bit for Tx*/ + regmap_update_bits(spdif_private->regmap, REG_SPDIF_SCR, + SCR_VAL_MASK, SCR_VAL_CLEAR); + return 0; } -- cgit v1.2.3-59-g8ed1b