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Message-ID: <CAD=FV=VSnhOSFtLX==DYF1WFszaJwgnbZY-EycP4=SNs6rqajw@mail.gmail.com>
Date:   Thu, 11 Mar 2021 11:56:52 -0800
From:   Doug Anderson <dianders@...omium.org>
To:     Srinivasa Rao Mandadapu <srivasam@...eaurora.org>
Cc:     gross@...nel.org, Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
        Rohit kumar <rohitkr@...eaurora.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Judy Hsiao <judyhsiao@...omium.org>,
        Ajit Pandey <ajitp@...eaurora.org>,
        V Sujith Kumar Reddy <vsujithk@...eaurora.org>
Subject: Re: [PATCH v4 1/2] arm64: dts: qcom: sc7180-trogdor: Add lpass dai
 link for I2S driver

Hi,

On Thu, Mar 11, 2021 at 8:49 AM Srinivasa Rao Mandadapu
<srivasam@...eaurora.org> wrote:
>
> From: Ajit Pandey <ajitp@...eaurora.org>
>
> Add dai link for supporting lpass I2S driver, which is used
> for audio capture and playback.
> Add lpass-cpu node with  pin controls and i2s primary
> and secondary dai-links
>
> Signed-off-by: Ajit Pandey <ajitp@...eaurora.org>
> Signed-off-by: V Sujith Kumar Reddy <vsujithk@...eaurora.org>
> Signed-off-by: Srinivasa Rao Mandadapu <srivasam@...eaurora.org>
> ---
>  arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi | 58 ++++++++++++++++++++
>  1 file changed, 58 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
> index 436582279dad..501e3d4c9097 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
> @@ -9,6 +9,7 @@
>  #include <dt-bindings/input/gpio-keys.h>
>  #include <dt-bindings/input/input.h>
>  #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
> +#include <dt-bindings/sound/qcom,lpass.h>

It seems marginally better to include "sc7180-lpass.h" to get this? I
don't really know the difference between the two but since unless
we're planning to delete the sc7180 version it seems like you might as
well include that one?


>  /* PMICs depend on spmi_bus label and so must come after SoC */
>  #include "pm6150.dtsi"
> @@ -283,6 +284,42 @@ keyboard_backlight: keyboard-backlight {
>                         max-brightness = <1023>;
>                 };
>         };
> +
> +       sound: sound {
> +               compatible = "google,sc7180-trogdor";
> +               model = "sc7180-rt5682-max98357a-1mic";
> +
> +               audio-routing =
> +                       "Headphone Jack", "HPOL",
> +                       "Headphone Jack", "HPOR";
> +
> +               #address-cells = <1>;
> +               #size-cells = <0>;
> +
> +               dai-link@0 {
> +                       link-name = "MultiMedia0";
> +                       reg = <MI2S_PRIMARY>;
> +                       cpu {
> +                               sound-dai = <&lpass_cpu MI2S_PRIMARY>;
> +                       };
> +
> +                       codec {
> +                               sound-dai = <&alc5682 MI2S_PRIMARY>;

I'm an audio noob but isn't "MI2S_PRIMARY" something to be used with
"lpass_cpu", not with "alc5682" ?

I have no idea what the IDs correspond to on "alc5682". Are you sure
we even need an extra ID there? The "alc5682" bindings upstream don't
talk anything about dai-cells, but maybe they're just wrong...

-Doug

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