[ASoC] 88pm860x - Incorporate the marvell errata regarding Audio Power-up Delay.

[Bas Vermeulen <Bas.Vermeulen@novero.com>]

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On 09/17/2011 03:32 PM, Mark Brown wrote:
>> Note that in order to be able to use playback and capture independently
>> on the I2S interface (within reason, it is not possible to use a
>> different rate for instance), I had to add a SUPPLY control to the dapm
>> widgets that turns on the I2S clock when needed.
> Can you send a patch for this please?
This patch implements the audio power-up delay errata for the 88PM8607, 
meaning the codec will actually be reset.

Regards,

Bas Vermeulen

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>From 55d78799fc7e492f582bc7feb4cb3251e8ef895d Mon Sep 17 00:00:00 2001
From: Bas Vermeulen <bas.vermeulen@novero.com>
Date: Mon, 19 Sep 2011 13:09:10 +0200
Subject: [PATCH 2/2] [ASoC] 88pm860x-codec - reset the codec correctly

Reset the codec according to the Audio power-up delay errata for the 88PM8607.

Signed-off-by: Bas Vermeulen <bas.vermeulen@novero.com>
---
 sound/soc/codecs/88pm860x-codec.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/sound/soc/codecs/88pm860x-codec.c b/sound/soc/codecs/88pm860x-codec.c
index 0198dbb..df7b4a0 100644
--- a/sound/soc/codecs/88pm860x-codec.c
+++ b/sound/soc/codecs/88pm860x-codec.c
@@ -1179,6 +1179,9 @@ static int pm860x_set_bias_level(struct snd_soc_codec *codec,
 	case SND_SOC_BIAS_STANDBY:
 		if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
 			/* Enable Audio PLL & Audio section */
+			data = AUDIO_PLL | AUDIO_SECTION_ON;
+			pm860x_reg_write(codec->control_data, REG_MISC2, data);
+			udelay(300);
 			data = AUDIO_PLL | AUDIO_SECTION_RESET
 				| AUDIO_SECTION_ON;
 			pm860x_reg_write(codec->control_data, REG_MISC2, data);
-- 
1.7.0.4


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