linux-kernel - Re: [PATCH 2/2] arm64: dts: qcom: x1e80100-yoga: add wifi calibration variant

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Message-ID: <9dc823e9-eef1-41a8-b151-43558cdd7c09@linaro.org>
Date: Tue, 16 Jul 2024 01:02:23 +0200
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Patrick Wildt <patrick@...eri.se>,
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc: Kalle Valo <kvalo@...nel.org>, Bjorn Andersson <andersson@...nel.org>,
 "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>, Steev Klimaszewski <steev@...i.org>,
 linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
 devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
 linux-kernel@...r.kernel.org, Johan Hovold <johan+linaro@...nel.org>
Subject: Re: [PATCH 2/2] arm64: dts: qcom: x1e80100-yoga: add wifi calibration
 variant

On 16.07.2024 1:00 AM, Konrad Dybcio wrote:
> On 16.07.2024 12:01 AM, Patrick Wildt wrote:
>> Am Tue, Jul 16, 2024 at 12:51:53AM +0300 schrieb Dmitry Baryshkov:
>>> On Mon, Jul 15, 2024 at 09:40:41PM GMT, Patrick Wildt wrote:
>>>> Describe the bus topology for PCIe domain 4 and add the ath12k
>>>> calibration variant so that the board file (calibration data) can be
>>>> loaded.
>>>>
>>>> Signed-off-by: Patrick Wildt <patrick@...eri.se>
>>>> ---
>>>>  .../boot/dts/qcom/x1e80100-lenovo-yoga-slim7x.dts      |  9 +++++++++
>>>>  arch/arm64/boot/dts/qcom/x1e80100.dtsi                 | 10 ++++++++++
>>>>  2 files changed, 19 insertions(+)
>>>>
>>>> diff --git a/arch/arm64/boot/dts/qcom/x1e80100-lenovo-yoga-slim7x.dts b/arch/arm64/boot/dts/qcom/x1e80100-lenovo-yoga-slim7x.dts
>>>> index fbff558f5b07..f569f0fbd1fc 100644
>>>> --- a/arch/arm64/boot/dts/qcom/x1e80100-lenovo-yoga-slim7x.dts
>>>> +++ b/arch/arm64/boot/dts/qcom/x1e80100-lenovo-yoga-slim7x.dts
>>>> @@ -635,6 +635,15 @@ &pcie4_phy {
>>>>  	status = "okay";
>>>>  };
>>>>  
>>>> +&pcie4_port0 {
>>>> +	wifi@0 {
>>>> +		compatible = "pci17cb,1107";
>>>> +		reg = <0x10000 0x0 0x0 0x0 0x0>;
>>>> +
>>>> +		qcom,ath12k-calibration-variant = "LES790";
>>>
>>> It doesn't look like it follows the rest of the calibration variants.
>>>
>>> Something like "Lenovo_Y7x" or "Lenovo_Yoga7x" sounds more logical.
>>
>> This is what's both in the DSDT
>>
>>   Device (WLN)
>>   {
>>     [...]
>>     Name (BDFE, "BDF_LES790")
>>
>> and kvalo's board-2.bin for this machine:
>>
>>   $ strings board-2.bin | grep LES
>>   bus=pci,vendor=17cb,device=1107,subsystem-vendor=17aa,subsystem-device=e0e9,qmi-chip-id=2,qmi-board-id=255,variant=LES790
>>
>> I don't think we can hand-pick these strings, they come from whoever
>> decided upon them and fed them into ACPI tables and QC's binaries.
> 
> Huh, great nod from qca!
> Looks like there's even a bit more hw supported in there..
> 
> Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>

Ref: https://git.codelinaro.org/clo/ath-firmware/ath12k-firmware/-/blob/main/WCN7850/hw2.0/board-2.bin

Konrad