Commit 3cc7780b authored Oct 19, 2015 by Stefan Agner Committed by Mark Brown Oct 26, 2015

ASoC: fsl_sai: fix Rx synchrounous mode



When using the Rx clock for both, transmitter and receiver, the
transmitter needs to be set to synchronous with receiver.

This reverts 855675f6 ("ASoC: fsl_sai: Set SYNC bit of TCR2 to
Asynchronous Mode"), which, judiging from the commit log, seems to
mixed up between the two synchronous modes: The boolean
sai->synchronous[TX] is indicating wheather the SAI should work in
Rx synchronous mode (sync Tx with Rx), hence if the value is true,
the SYNC field of TCR2 needs to be set to 0x1 ("Synchronous with
receiver").

Signed-off-by: Stefan Agner <stefan@agner.ch>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

parent 6ff33f39

sound/soc/fsl/fsl_sai.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -454,7 +454,8 @@ static int fsl_sai_trigger(struct snd_pcm_substream *substream, int cmd,
		* Rx sync with Tx clocks: Clear SYNC for Tx, set it for Rx.
		* Tx sync with Rx clocks: Clear SYNC for Rx, set it for Tx.
		*/
		regmap_update_bits(sai->regmap, FSL_SAI_TCR2, FSL_SAI_CR2_SYNC, 0);
		regmap_update_bits(sai->regmap, FSL_SAI_TCR2, FSL_SAI_CR2_SYNC,
		sai->synchronous[TX] ? FSL_SAI_CR2_SYNC : 0);
		regmap_update_bits(sai->regmap, FSL_SAI_RCR2, FSL_SAI_CR2_SYNC,
		sai->synchronous[RX] ? FSL_SAI_CR2_SYNC : 0);

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