linux-kernel - Re: [PATCH 3/7] arm64: dts: qcom: msm8998-xperia: Add support for wcn3990 Bluetooth

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Date:   Thu, 9 Sep 2021 20:03:28 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>
To:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        bjorn.andersson@...aro.org
Cc:     agross@...nel.org, robh+dt@...nel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, konrad.dybcio@...ainline.org,
        marijn.suijten@...ainline.org, martin.botka@...ainline.org,
        ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        paul.bouchara@...ainline.org
Subject: Re: [PATCH 3/7] arm64: dts: qcom: msm8998-xperia: Add support for
 wcn3990 Bluetooth

Il 09/09/21 15:19, Dmitry Baryshkov ha scritto:
> On 03/09/2021 21:09, AngeloGioacchino Del Regno wrote:
>> This platform uses the WCN3990 Bluetooth chip, reachable on UART-3.
>>
>> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...ainline.org>
>> Reviewed-by: Marijn Suijten <marijn.suijten@...ainline.org>
>> ---
>>   .../dts/qcom/msm8998-sony-xperia-yoshino.dtsi   | 17 +++++++++++++++++
>>   1 file changed, 17 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/msm8998-sony-xperia-yoshino.dtsi 
>> b/arch/arm64/boot/dts/qcom/msm8998-sony-xperia-yoshino.dtsi
>> index 2fe53e4675d5..66b009ba72fe 100644
>> --- a/arch/arm64/boot/dts/qcom/msm8998-sony-xperia-yoshino.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/msm8998-sony-xperia-yoshino.dtsi
>> @@ -179,6 +179,23 @@ &blsp1_i2c5_sleep {
>>       bias-disable;
>>   };
>> +&blsp1_uart3 {
>> +    status = "okay";
>> +
>> +    bluetooth {
>> +        compatible = "qcom,wcn3990-bt";
>> +
>> +        vddio-supply = <&vreg_s4a_1p8>;
>> +        vddxo-supply = <&vreg_l7a_1p8>;
>> +        vddrf-supply = <&vreg_l17a_1p3>;
>> +        vddch0-supply = <&vreg_l25a_3p3>;
>> +        max-speed = <3200000>;
>> +
>> +        clocks = <&rpmcc RPM_SMD_RF_CLK2_PIN>;
>> +    };
>> +};
> 
> There is an ongoing proposal to rework wcn3990 (bt and wifi) bindings, so we might 
> want to delay this a bit. Not a strict requirement, since the changes would be 
> backwards-compatible.
> 
> 

Delaying this patch is not a problem on my side - but if the changes are backwards
compatible, do we really have reasons to delay it?

In any case, I trust your judgement on this: if you want to delay it, I will send
the wcn3990 support after the rework.

Cheers,
- Angelo