linux-kernel - [PATCH] [47/50] ASoC: Ensure we delay long enough for WM8994 FLL to lock

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Message-Id: <20110728234452.254642403FF@tassilo.jf.intel.com>
Date:	Thu, 28 Jul 2011 16:44:52 -0700 (PDT)
From:	Andi Kleen <andi@...stfloor.org>
To:	broonie@...nsource.wolfsonmicro.com, lrg@...com,
	ak@...ux.intel.com, linux-kernel@...r.kernel.org,
	stable@...nel.org, tim.bird@...sony.com
Subject: [PATCH] [47/50] ASoC: Ensure we delay long enough for WM8994 FLL to lock

2.6.35-longterm review patch.  If anyone has any objections, please let me know.

------------------
From: Mark Brown <broonie@...nsource.wolfsonmicro.com>

[ upstream commit 8e9ddf811ba021506d2316fcfe619faa0ab3f567 ]
 when starting

This delay is very conservative.

Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@...com>
Cc: stable@...nel.org
Signed-off-by: Andi Kleen <ak@...ux.intel.com>

Index: linux-2.6.35.y/sound/soc/codecs/wm8994.c
===================================================================
--- linux-2.6.35.y.orig/sound/soc/codecs/wm8994.c
+++ linux-2.6.35.y/sound/soc/codecs/wm8994.c
@@ -2929,6 +2929,8 @@ static int wm8994_set_fll(struct snd_soc
 		snd_soc_update_bits(codec, WM8994_FLL1_CONTROL_1 + reg_offset,
 				    WM8994_FLL1_ENA | WM8994_FLL1_FRAC,
 				    reg);
+
+		msleep(5);
 	}
 
 	wm8994->fll[id].in = freq_in;
--
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