ASoC: rt5645: add register setting for TDM

We need to set extra register to avoid a recording issue in TDM
mode.

Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c
index 665f8b64efe9..57afa12b2f54 100644
--- a/sound/soc/codecs/rt5645.c
+++ b/sound/soc/codecs/rt5645.c
@@ -2112,8 +2112,11 @@ static int rt5645_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
         struct snd_soc_codec *codec = dai->codec;
         unsigned int val = 0;
 
-        if (rx_mask || tx_mask)
+        if (rx_mask || tx_mask) {
                 val |= (1 << 14);
+                snd_soc_update_bits(codec, RT5645_BASS_BACK,
+                        RT5645_G_BB_BST_MASK, RT5645_G_BB_BST_25DB);
+        }
 
         switch (slots) {
         case 4: