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

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Message-ID: <a0c06803-450c-eb44-8789-8a48c577389d@linaro.org>
Date:   Mon, 9 Jan 2023 09:28:02 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
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.

Best regards,
Krzysztof