From c68e42c4372fca48d237df398d208c6b7e181ff3 Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Sun, 3 Aug 2014 19:29:02 -0600
Subject: [PATCH] WM8904: Restore mystery bit in setup that was accidentally
 tossed before

---
 drivers/audio/wm8904.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/audio/wm8904.c b/drivers/audio/wm8904.c
index 2c63e17f0d..323ec05194 100644
--- a/drivers/audio/wm8904.c
+++ b/drivers/audio/wm8904.c
@@ -2119,9 +2119,10 @@ static void wm8904_audio_output(FAR struct wm8904_dev_s *priv)
    *   AIFADC_TDM=0                        : Normal ADCDAT operation
    *   AIFDAC_TDM_CHAN=0                   : DACDAT data input on slot 0
    *   AIFDAC_TDM=0                        : Normal DACDAT operation
+   *   Bit 14:                             : Undocumented
    */
 
-  regval = WM8904_AIF_FMT_I2S | WM8904_AIF_WL_24BITS | WM8904_BCLK_DIR;
+  regval = WM8904_AIF_FMT_I2S | WM8904_AIF_WL_24BITS | WM8904_BCLK_DIR | 0x4000;
   wm8904_writereg(priv, WM8904_AIF1, regval);
 
   /* Audio Interface 2.