linux-kernel - Re: [PATCH v3 1/2] arm64: dts: qcom: Add support for usb nodes on QCS8300

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Message-ID: <fb28e81b-2a0d-4a34-a8e6-d4e7812fbcd2@quicinc.com>
Date: Tue, 12 Nov 2024 21:17:49 +0530
From: Krishna Kurapati <quic_kriskura@...cinc.com>
To: Konrad Dybcio <konradybcio@...il.com>
CC: <linux-kernel@...r.kernel.org>, Conor Dooley <conor+dt@...nel.org>,
        "Dmitry Baryshkov" <dmitry.baryshkov@...aro.org>,
        Krzysztof Kozlowski
	<krzk+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>, Rob Herring
	<robh@...nel.org>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <quic_ppratap@...cinc.com>, <quic_jackp@...cinc.com>,
        Konrad Dybcio <konradybcio@...nel.org>
Subject: Re: [PATCH v3 1/2] arm64: dts: qcom: Add support for usb nodes on
 QCS8300



On 11/12/2024 4:34 PM, Konrad Dybcio wrote:
> 
> 
> On 11/5/24 17:49, Krishna Kurapati wrote:
>> Add support for USB controllers on QCS8300. The second
>> controller is only High Speed capable.
>>
>> Signed-off-by: Krishna Kurapati <quic_kriskura@...cinc.com>
>> ---
> 
> [...]
> 
> (the PHYs look good)
> 
>> +        usb_1: usb@...8800 {
>> +            compatible = "qcom,qcs8300-dwc3", "qcom,dwc3";
>> +            reg = <0x0 0x0a6f8800 0x0 0x400>;
>> +            #address-cells = <2>;
>> +            #size-cells = <2>;
>> +            ranges;
> 
> Please match the property style with x1e80100.dtsi's dwc3 node

Meaning adding the 3 properties to before the starting of dwc3 node ?

> 
> [...]
> 
>> +
>> +            usb_2_dwc3: usb@...0000 {
>> +                compatible = "snps,dwc3";
>> +                reg = <0x0 0x0a400000 0x0 0xe000>;
>> +                interrupts = <GIC_SPI 442 IRQ_TYPE_LEVEL_HIGH>;
>> +                iommus = <&apps_smmu 0x20 0x0>;
>> +                phys = <&usb_2_hsphy>;
>> +                phy-names = "usb2-phy";
>> +                snps,dis-u1-entry-quirk;
>> +                snps,dis-u2-entry-quirk;
>> +                snps,dis_u2_susphy_quirk;
>> +                snps,dis_u3_susphy_quirk;
>> +                snps,dis_enblslpm_quirk;
> 
> maximum-speed = "high-speed"

Ideally this is not needed for the driver to operate. Can I add this 
property when I send the patch to enable second controller on ride 
platform ? Only reason I ask is this is not a blocker and it would need 
another rebase.

Regards,
Krishna,