ASoC: wm8962: Allow VMID time to fully ramp

commit 9d40e5582c9c4cfb6977ba2a0ca9c2ed82c56f21 upstream.

Required for reliable power up from cold.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c
index 07dd7eb..e97df24 100644 (file)
--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -3105,6 +3105,9 @@ static int wm8962_set_bias_level(struct snd_soc_codec *codec,
                /* VMID 2*250k */
                snd_soc_update_bits(codec, WM8962_PWR_MGMT_1,
                                    WM8962_VMID_SEL_MASK, 0x100);
+
+               if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
+                       msleep(100);
                break;
 
        case SND_SOC_BIAS_OFF: