ASoC: mediatek: mt8192: change mclk_multiple of TDM from 128 to 512

mclk = rate * mclk_multiple
bclk = rate * channel * sample_width

If TDM outputs 8 channels and 32 bits, bclk will be greater than mclk.

Changes the ratio from 128 to 512.

Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20210120080850.699354-4-tzungbi@google.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/mediatek/mt8192/mt8192-dai-tdm.c b/sound/soc/mediatek/mt8192/mt8192-dai-tdm.c
index 8383536b7ae0090beed80e78574cb9fb898b8b2c..f5de1d7696792daf5c38db90de2a16a2f04c809b 100644 (file)
--- a/sound/soc/mediatek/mt8192/mt8192-dai-tdm.c
+++ b/sound/soc/mediatek/mt8192/mt8192-dai-tdm.c
@@ -738,7 +738,7 @@ static struct mtk_afe_tdm_priv *init_tdm_priv_data(struct mtk_base_afe *afe)
        if (!tdm_priv)
                return NULL;
 
-       tdm_priv->mclk_multiple = 128;
+       tdm_priv->mclk_multiple = 512;
        tdm_priv->bck_id = MT8192_I2S4_BCK;
        tdm_priv->mclk_id = MT8192_I2S4_MCK;
        tdm_priv->id = MT8192_DAI_TDM;