linux-kernel - Re: [PATCH 2/2] arm64: dts: qcom: x1e80100-romulus: Set up USB Multiport controller

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Message-ID: <eb17ba5c-d7b4-4463-a0a3-95ab584988f6@kernel.org>
Date: Mon, 2 Sep 2024 18:07:34 +0200
From: Konrad Dybcio <konradybcio@...nel.org>
To: neil.armstrong@...aro.org, Konrad Dybcio <konradybcio@...nel.org>,
 Bjorn Andersson <andersson@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>
Cc: Marijn Suijten <marijn.suijten@...ainline.org>,
 linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, Konrad Dybcio <quic_kdybcio@...cinc.com>,
 20240830-nxp-ptn3222-v2-0-4c6d8535cf6c@...aro.org
Subject: Re: [PATCH 2/2] arm64: dts: qcom: x1e80100-romulus: Set up USB
 Multiport controller

On 2.09.2024 6:01 PM, neil.armstrong@...aro.org wrote:
> On 02/09/2024 16:50, Konrad Dybcio wrote:
>> From: Konrad Dybcio <quic_kdybcio@...cinc.com>
>>
>> The USB MP controller is wired up to the USB-A port on the left side
>> and to the Surface Connector on the right side. Configure it.
>>
>> While at it, remove a stray double \n.
>>
>> Signed-off-by: Konrad Dybcio <quic_kdybcio@...cinc.com>
>> ---
>>   .../boot/dts/qcom/x1e80100-microsoft-romulus.dtsi  | 59 +++++++++++++++++++++-
>>   1 file changed, 57 insertions(+), 2 deletions(-)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi b/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
>> index 5419d0b02785..ac2acf949b70 100644
>> --- a/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
>> @@ -572,7 +572,17 @@ &i2c5 {
>>         status = "okay";
>>   -    /* Something @4f */
>> +    ptn3222: redriver@4f {
>> +        compatible = "nxp,ptn3222";
>> +        reg = <0x4f>;
>> +
>> +        reset-gpios = <&tlmm 7 GPIO_ACTIVE_LOW>;
>> +
>> +        vdd3v3-supply = <&vreg_l13b>;
>> +        vdd1v8-supply = <&vreg_l4b>;
>> +
>> +        #phy-cells = <0>;
> 
> It's unrelated to mutiport USB-A, should go in a separate change,
> and also probably in a bigger change enabling usb-c features using
> the retimer.

No, this chip converts between eUSB on the PHY and USB on the port

Konrad