linux-kernel - Re: [PATCHv1 4/7] ASoC: dts: kirkwood-t5325: To support simple card newest style.

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Date:	Mon, 1 Sep 2014 15:41:48 +0200
From:	Andrew Lunn <andrew@...n.ch>
To:	Xiubo Li <Li.Xiubo@...escale.com>
Cc:	broonie@...nel.org, lgirdwood@...il.com, perex@...ex.cz,
	tiwai@...e.de, kuninori.morimoto.gx@...esas.com, moinejf@...e.fr,
	andrew@...n.ch, jsarha@...com, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-sh@...r.kernel.org,
	alsa-devel@...a-project.org, shawn.guo@...escale.com,
	linux-kernel@...r.kernel.org, Jason Cooper <jason@...edaemon.net>
Subject: Re: [PATCHv1 4/7] ASoC: dts: kirkwood-t5325: To support simple card
 newest style.

On Mon, Sep 01, 2014 at 12:29:38PM +0800, Xiubo Li wrote:
> This patch depends on the following simple card patch:
> ===
> ASoC: simple-card: Merge single and muti DAI link code.

Saying what a patch depends on, is not the best of ChangeLog.

Say something like:

The simple-card binding has been changed, so that a dai-link subnode
is now required, and the properties directly under the sound node are
no longer allowed. Modify the DT to fit this new binding.

   Andrew


> 
> This patch merge single DAI link and muti-DAI links code together,
> and simply the simple-card driver code.
> 
> And also do some other improvement:
> 
> Since from the DAI format micro SND_SOC_DAIFMT_CBx_CFx, the 'CBx'
> mean Codec's bit clock is as master/slave and the 'CFx' mean Codec's
> frame clock is as master/slave.
> 
> So these same DAI formats should be informed to CPU and CODE DAIs at
> the same time. For the Codec driver will set the bit clock and frame
> clock as the DAI formats said, but for the CPU driver, if the the
> bit clock or frame clock is as Codec master, so it should be set CPU
> DAI device as bit clock or frame clock as slave, and vice versa.
> 
> The old code will cause confusion, and we should be clear that the
> letter 'C' here mean to Codec.
> ===
> 
> Signed-off-by: Xiubo Li <Li.Xiubo@...escale.com>
> ---
>  arch/arm/boot/dts/kirkwood-t5325.dts | 15 ++++++++-------
>  1 file changed, 8 insertions(+), 7 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/kirkwood-t5325.dts b/arch/arm/boot/dts/kirkwood-t5325.dts
> index 610ec0f..25d1223 100644
> --- a/arch/arm/boot/dts/kirkwood-t5325.dts
> +++ b/arch/arm/boot/dts/kirkwood-t5325.dts
> @@ -189,7 +189,6 @@
>  
>  	sound {
>  		compatible = "simple-audio-card";
> -		simple-audio-card,format = "i2s";
>  		simple-audio-card,routing =
>  			"Headphone Jack", "HPL",
>  			"Headphone Jack", "HPR",
> @@ -204,12 +203,14 @@
>  
>  		simple-audio-card,mclk-fs = <256>;
>  
> -		simple-audio-card,cpu {
> -			sound-dai = <&audio>;
> -		};
> -
> -		simple-audio-card,codec {
> -			sound-dai = <&alc5621>;
> +		simple-audio-card,dai-link {
> +			format = "i2s";
> +			cpu {
> +				sound-dai = <&audio>;
> +			};
> +			codec {
> +				sound-dai = <&alc5621>;
> +			};
>  		};
>  	};
>  };
> -- 
> 1.8.4
> 
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