linux-kernel - RE: [PATCH v2 5/5] arm64: dts: fsd: Add sound card node for Tesla FSD

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Message-ID: <051601d923df$a0e7b840$e2b728c0$@samsung.com>
Date:   Mon, 9 Jan 2023 09:35:33 +0530
From:   "Padmanabhan Rajanbabu" <p.rajanbabu@...sung.com>
To:     "'Krzysztof Kozlowski'" <krzysztof.kozlowski@...aro.org>,
        <lgirdwood@...il.com>, <broonie@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <s.nawrocki@...sung.com>,
        <perex@...ex.cz>, <tiwai@...e.com>, <pankaj.dubey@...sung.com>,
        <alim.akhtar@...sung.com>, <rcsekar@...sung.com>,
        <aswani.reddy@...sung.com>
Cc:     <alsa-devel@...a-project.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-samsung-soc@...r.kernel.org>
Subject: RE: [PATCH v2 5/5] arm64: dts: fsd: Add sound card node for Tesla
 FSD



> -----Original Message-----
> From: Krzysztof Kozlowski [mailto:krzysztof.kozlowski@...aro.org]
> Sent: 03 January 2023 04:43 PM
> To: Padmanabhan Rajanbabu <p.rajanbabu@...sung.com>;
> lgirdwood@...il.com; broonie@...nel.org; robh+dt@...nel.org;
> krzysztof.kozlowski+dt@...aro.org; s.nawrocki@...sung.com;
> perex@...ex.cz; tiwai@...e.com; pankaj.dubey@...sung.com;
> alim.akhtar@...sung.com; rcsekar@...sung.com;
> aswani.reddy@...sung.com
> Cc: alsa-devel@...a-project.org; devicetree@...r.kernel.org; linux-
> kernel@...r.kernel.org; linux-samsung-soc@...r.kernel.org
> Subject: Re: [PATCH v2 5/5] arm64: dts: fsd: Add sound card node for Tesla
> FSD
> 
> On 03/01/2023 05:56, Padmanabhan Rajanbabu wrote:
> > Add device tree node support for sound card on Tesla FSD board
> >
> > Signed-off-by: Padmanabhan Rajanbabu <p.rajanbabu@...sung.com>
> > ---
> >  arch/arm64/boot/dts/tesla/fsd-evb.dts | 37
> > +++++++++++++++++++++++++++
> >  1 file changed, 37 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/tesla/fsd-evb.dts
> > b/arch/arm64/boot/dts/tesla/fsd-evb.dts
> > index e2fd49774f15..ce726bddfb50 100644
> > --- a/arch/arm64/boot/dts/tesla/fsd-evb.dts
> > +++ b/arch/arm64/boot/dts/tesla/fsd-evb.dts
> > @@ -29,6 +29,43 @@
> >  		device_type = "memory";
> >  		reg = <0x0 0x80000000 0x2 0x00000000>;
> >  	};
> > +
> > +	sound {
> > +		compatible = "simple-audio-card";
> > +
> > +		#address-cells = <1>;
> > +		#size-cells = <0>;
> > +
> > +		simple-audio-card,name = "FSD Audio Card";
> > +		simple-audio-card,widgets =
> > +			"Line", "Line Out",
> 
> I don't think you need to break the line after '='.

Okay, will change the same in the next patch set.

> 
> > +			"Line", "Line In";
> > +		simple-audio-card,routing =
> > +			"Line Out", "LLOUT",
> > +			"Line Out", "RLOUT",
> > +			"MIC2L", "Line In",
> > +			"MIC2R", "Line In";
> > +
> > +		status = "okay";
> 
> Why?

Okay, I understood that if there is no status entry, it is
treated as "okay". I'll update the same in the next
patch set.

> 
> > +
> > +		simple-audio-card,dai-link@0 {
> > +			reg = <0>;
> > +			format = "i2s";
> > +			bitclock-master = <&tlv320aic3x>;
> > +			frame-master = <&tlv320aic3x>;
> > +
> > +			cpu0 {
> 
> Does not look like you tested the DTS against bindings. Please run `make
> dtbs_check` (see Documentation/devicetree/bindings/writing-schema.rst
> for instructions).

I did not encounter any error while running dtbs_check for fsd-evb.dts

This is the command I executed
make dtbs_check > output.txt 2>&1

dt-mk-schema --version: 2022.11

Please let me know if I'm missing anything here.

> 
> > +				sound-dai = <&i2s_0 0>;
> > +			};
> > +			cpu1 {
> > +				sound-dai = <&i2s_0 1>;
> > +			};
> > +			codec {
> > +				sound-dai = <&tlv320aic3x>;
> > +				system-clock-frequency = <33000000>;
> > +			};
> 
> Best regards,
> Krzysztof

Thanks,
Padmanabhan R.