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

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Message-ID: <031d01d92748$8cdef1d0$a69cd570$@samsung.com>
Date:   Fri, 13 Jan 2023 17:44:09 +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: 09 January 2023 01:58 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 09/01/2023 05:05, Padmanabhan Rajanbabu wrote:
> >
> >
> >> -----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.
> 
> You are right. I misread the pattern in simple-card.yaml. I'll fix the file, so let's
> make these nodes: cpu-0 and cpu-1.

Okay, Thank you for confirming, I'll change the node names to cpu-0 and cpu-1

> 
> Best regards,
> Krzysztof