Set Transmit Data Level(TDL) and Receive Data Level(RDL) to 16 samples. Without this setting, the TDL is default to be 0x00 (means 0 sample), and the RDL is default to be 0x1f (means 32 samples).
Signed-off-by: Jianqun Xu jay.xu@rock-chips.com --- changes since v1: - modify commit message "bit" to "sample", suggested by dgreid
sound/soc/rockchip/rockchip_i2s.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c index c74ba37..1cd7efc 100644 --- a/sound/soc/rockchip/rockchip_i2s.c +++ b/sound/soc/rockchip/rockchip_i2s.c @@ -247,6 +247,10 @@ static int rockchip_i2s_hw_params(struct snd_pcm_substream *substream,
regmap_update_bits(i2s->regmap, I2S_TXCR, I2S_TXCR_VDW_MASK, val); regmap_update_bits(i2s->regmap, I2S_RXCR, I2S_RXCR_VDW_MASK, val); + regmap_update_bits(i2s->regmap, I2S_DMACR, I2S_DMACR_TDL_MASK, + I2S_DMACR_TDL(16)); + regmap_update_bits(i2s->regmap, I2S_DMACR, I2S_DMACR_RDL_MASK, + I2S_DMACR_RDL(16));
return 0; }