linux-kernel - Re: [PATCH 6/6] ARM: dts: Add sound support to exynos5250-spring

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Message-ID: <54E5ED9A.90802@collabora.co.uk>
Date:	Thu, 19 Feb 2015 15:05:14 +0100
From:	Javier Martinez Canillas <javier.martinez@...labora.co.uk>
To:	Andreas Färber <afaerber@...e.de>,
	Sangbeom Kim <sbkim73@...sung.com>,
	alsa-devel@...a-project.org, linux-samsung-soc@...r.kernel.org
CC:	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org,
	Vincent Palatin <vpalatin@...omium.org>,
	Doug Anderson <dianders@...omium.org>,
	Tomasz Figa <tomasz.figa@...il.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Kukjin Kim <kgene@...nel.org>
Subject: Re: [PATCH 6/6] ARM: dts: Add sound support to exynos5250-spring

Hello Andreas,

On 02/18/2015 07:25 PM, Andreas Färber wrote:
> Signed-off-by: Andreas Färber <afaerber@...e.de>
> ---
>  arch/arm/boot/dts/exynos5250-spring.dts | 25 +++++++++++++++++++++++++
>  1 file changed, 25 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/exynos5250-spring.dts b/arch/arm/boot/dts/exynos5250-spring.dts
> index 866beb4e0597..142e0550e223 100644
> --- a/arch/arm/boot/dts/exynos5250-spring.dts
> +++ b/arch/arm/boot/dts/exynos5250-spring.dts
> @@ -49,6 +49,17 @@
>  		};
>  	};
>  
> +	sound {
> +		compatible = "google,snow-audio-max98089";
> +		samsung,model = "Spring-I2S-MAX98089";
> +		samsung,i2s-controller = <&i2s0>;
> +		samsung,audio-codec = <&max98089>;
> +		clocks = <&pmu_system_controller 0>;
> +		clock-names = "mclk";

Related to my comment in patch 1/6, "mclk" should be defined in the codec
device node. I know that you probably used as a reference Tushar's patch
[0] I posted recently but I just figured out that his dependency patch [1]
mentioned in [2] handled the master clock in the ASoC machine driver but
the final version merged handled it in the codec drivers.

I asked Kukjin to drop the patch to Snow and Peach Pit/Pi and will post
a correct version as a part of a series once I've sound working.

> +		pinctrl-names = "default";
> +		pinctrl-0 = <&mic_det_gpio>, <&hp_det_gpio>;
> +	};
> +

The mic and headphone jack detection are still not supported in the Snow
ASoC machine driver so this pinctrl are not needed but I guess it doesn't
hurt to have them mux'ed too.

Best regards,
Javier

[0]: https://lkml.org/lkml/2015/2/6/495
[1]: https://lkml.org/lkml/2014/5/20/4
[2]: https://patches.linaro.org/30406/
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