linux-kernel - Re: [PATCH v2 4/4] ARM: dts: Enable HDMI audio on Snow Chromebook

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Date:   Fri, 9 Mar 2018 14:01:12 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Sylwester Nawrocki <s.nawrocki@...sung.com>
Cc:     kgene@...nel.org, linux-samsung-soc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Bartłomiej Żołnierkiewicz 
        <b.zolnierkie@...sung.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>
Subject: Re: [PATCH v2 4/4] ARM: dts: Enable HDMI audio on Snow Chromebook

On Thu, Mar 8, 2018 at 5:25 PM, Sylwester Nawrocki
<s.nawrocki@...sung.com> wrote:
> This patch adds new cpu, codec subnodes according to the updated
> "google,snow-audio-max98095" DT bindings and the I2S clock tree
> configuration so sound on the HDMI interface can also be supported.
>
> Signed-off-by: Sylwester Nawrocki <s.nawrocki@...sung.com>
> ---
> Changes since v2:
>  - changed order of codec phandles in codec/cpu-dai property
>    to match the DT bindings documentation.
> ---
>  arch/arm/boot/dts/exynos5250-snow-common.dtsi | 4 ++++
>  arch/arm/boot/dts/exynos5250-snow.dts         | 8 ++++++++
>  2 files changed, 12 insertions(+)
>
> diff --git a/arch/arm/boot/dts/exynos5250-snow-common.dtsi b/arch/arm/boot/dts/exynos5250-snow-common.dtsi
> index bdf59dd3654b..932a00cfd716 100644
> --- a/arch/arm/boot/dts/exynos5250-snow-common.dtsi
> +++ b/arch/arm/boot/dts/exynos5250-snow-common.dtsi
> @@ -9,6 +9,7 @@
>  #include <dt-bindings/clock/maxim,max77686.h>
>  #include <dt-bindings/interrupt-controller/irq.h>
>  #include <dt-bindings/input/input.h>
> +#include <dt-bindings/sound/samsung-i2s.h>
>  #include "exynos5250.dtsi"
>
>  / {
> @@ -523,6 +524,9 @@
>  };
>
>  &i2s0 {
> +       assigned-clocks = <&i2s0 CLK_I2S_RCLK_SRC>;
> +       assigned-clock-parents = <&clock_audss EXYNOS_I2S_BUS>;
> +       #clock-cells = <1>;

Shouldn't this be property of exynos5250.dtsi? Along with clock-output-names?

BR,
Krzysztof

>         status = "okay";
>  };
>
> diff --git a/arch/arm/boot/dts/exynos5250-snow.dts b/arch/arm/boot/dts/exynos5250-snow.dts
> index 16e37c337a3f..75fdc5e6d423 100644
> --- a/arch/arm/boot/dts/exynos5250-snow.dts
> +++ b/arch/arm/boot/dts/exynos5250-snow.dts
> @@ -18,6 +18,14 @@
>
>                 samsung,model = "Snow-I2S-MAX98095";
>                 samsung,audio-codec = <&max98095>;
> +
> +               cpu {
> +                       sound-dai = <&i2s0 0>;
> +               };
> +
> +               codec {
> +                       sound-dai = <&max98095 0>, <&hdmi>;
> +               };
>         };
>  };
>
> --
> 2.14.2
>