netdev - Re: [PATCH v2 4/4] arm64: dts: qcom: thinkpad-x13s: Add bluetooth

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Date:   Wed, 1 Feb 2023 08:18:21 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Steev Klimaszewski <steev@...i.org>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Marcel Holtmann <marcel@...tmann.org>,
        Johan Hedberg <johan.hedberg@...il.com>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        Sven Peter <sven@...npeter.dev>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-bluetooth@...r.kernel.org,
        Mark Pearson <markpearson@...ovo.com>
Subject: Re: [PATCH v2 4/4] arm64: dts: qcom: thinkpad-x13s: Add bluetooth

On 01/02/2023 04:13, Steev Klimaszewski wrote:
>> On 31/01/2023 05:38, Steev Klimaszewski wrote:
>>> Signed-off-by: Steev Klimaszewski <steev@...i.org>
>>> ---
>>>  .../qcom/sc8280xp-lenovo-thinkpad-x13s.dts    | 68 +++++++++++++++++++
>>>  1 file changed, 68 insertions(+)
>>>
>>> diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
>>> index f936b020a71d..951438ac5946 100644
>>> --- a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
>>> +++ b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
>>> @@ -24,6 +24,8 @@ / {
>>>  	aliases {
>>>  		i2c4 = &i2c4;
>>>  		i2c21 = &i2c21;
>>> +		serial0 = &uart17;
>>> +		serial1 = &uart2;
>>>  	};
>>>  
>>>  	wcd938x: audio-codec {
>>> @@ -712,6 +714,32 @@ &qup0 {
>>>  	status = "okay";
>>>  };
>>>  
>>> +&uart2 {
>>> +	status = "okay";
>>> +
>>> +	pinctrl-names = "default";
>>> +	pinctrl-0 = <&uart2_state>;
>>> +
>>> +	bluetooth {
>>> +		compatible = "qcom,wcn6855-bt";
>>> +
>>> +/*
> 
>> Why dead code should be in the kernel?
> 
> As mentioned in the cover letter, this is a bit closer to an RFC than ready to
> go in, and I do apologize that it wasn't clear enough.  I do not have access to
> the schematics, and based on my reading of the schema for bluetooth, these
> entries are supposed to be required, however, like the wcn6750, I have dummy
> data entered into the qca_soc_data_wcn6855 struct.  I know that these should be
> there, I just do not have access to the correct information to put, if that
> makes sense?

Keeping them commented out, does not solve the "these should be there".
Drop or add them.


Best regards,
Krzysztof