linux-kernel - Re: [PATCH] ASoc: sam9g20_wm8731: use the proper SYSCKL value

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Message-ID: <20110525111545.GD10797@opensource.wolfsonmicro.com>
Date:	Wed, 25 May 2011 19:15:46 +0800
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Nicolas Ferre <nicolas.ferre@...el.com>
Cc:	linux-arm-kernel@...ts.infradead.org, alsa-devel@...a-project.org,
	linux-kernel@...r.kernel.org, lrg@...com
Subject: Re: [PATCH] ASoc: sam9g20_wm8731: use the proper SYSCKL value

On Tue, May 24, 2011 at 11:51:16AM +0200, Nicolas Ferre wrote:
> at91sam9g20 is providing master clock to wm8731: not using a crystal but an
> external MCLK. We can avoid conflict and save power using WM8731_SYSCLK_MCLK as
> we do not need oscillator to be powered.
> 
> Signed-off-by: Nicolas Ferre <nicolas.ferre@...el.com>

Adding Liam.

> ---
>  sound/soc/atmel/sam9g20_wm8731.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/sound/soc/atmel/sam9g20_wm8731.c b/sound/soc/atmel/sam9g20_wm8731.c
> index 28afbbf..95572d2 100644
> --- a/sound/soc/atmel/sam9g20_wm8731.c
> +++ b/sound/soc/atmel/sam9g20_wm8731.c
> @@ -146,7 +146,7 @@ static int at91sam9g20ek_wm8731_init(struct snd_soc_pcm_runtime *rtd)
>  			"at91sam9g20ek_wm8731 "
>  			": at91sam9g20ek_wm8731_init() called\n");
>  
> -	ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL,
> +	ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_MCLK,
>  		MCLK_RATE, SND_SOC_CLOCK_IN);
>  	if (ret < 0) {
>  		printk(KERN_ERR "Failed to set WM8731 SYSCLK: %d\n", ret);
> -- 
> 1.7.3
> 
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