linux-kernel - Re: [PATCH v6 0/8] Add multiport support for DWC3 controllers

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Date:   Thu, 13 Apr 2023 14:54:43 -0400
From:   Adrien Thierry <athierry@...hat.com>
To:     Krishna Kurapati <quic_kriskura@...cinc.com>
Cc:     Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        quic_pkondeti@...cinc.com, quic_ppratap@...cinc.com,
        quic_wcheng@...cinc.com, quic_jackp@...cinc.com,
        quic_harshq@...cinc.com, ahalaney@...hat.com,
        quic_shazhuss@...cinc.com
Subject: Re: [PATCH v6 0/8] Add multiport support for DWC3 controllers

Hi,

> Krishna Kurapati (8):
>   dt-bindings: usb: Add bindings for multiport properties on DWC3
>     controller
>   usb: dwc3: core: Access XHCI address space temporarily to read port
>     info
>   usb: dwc3: core: Skip setting event buffers for host only controllers
>   usb: dwc3: core: Refactor PHY logic to support Multiport Controller
>   usb: dwc3: qcom: Add multiport controller support for qcom wrapper
>   arm64: dts: qcom: sc8280xp: Add multiport controller node for SC8280
>   arm64: dts: qcom: sa8295p: Enable tertiary controller and its 4 USB
>     ports
>   arm64: dts: qcom: sa8540-ride: Enable first port of tertiary usb
>     controller
>
>  .../devicetree/bindings/usb/snps,dwc3.yaml    |  13 +-
>  arch/arm64/boot/dts/qcom/sa8295p-adp.dts	 |  47 +++
>  arch/arm64/boot/dts/qcom/sa8540p-ride.dts     |  22 ++
>  arch/arm64/boot/dts/qcom/sc8280xp.dtsi        |  58 +++
>  drivers/usb/dwc3/core.c                       | 373 ++++++++++++++----
>  drivers/usb/dwc3/core.h                       |  71 +++-
>  drivers/usb/dwc3/drd.c                        |  13 +-
>  drivers/usb/dwc3/dwc3-qcom.c                  |  28 +-
>  8 files changed, 523 insertions(+), 102 deletions(-)

I tested this series on the sa8540p-ride, with a USB Ethernet adapter
plugged into the board. The device shows up as expected:

# lsusb -tv
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/2p, 10000M
    ID 1d6b:0003 Linux Foundation 3.0 root hub
    |__ Port 1: Dev 2, If 0, Class=Vendor Specific Class, Driver=r8152, 5000M
        ID 0bda:8153 Realtek Semiconductor Corp. RTL8153 Gigabit Ethernet Adapter
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/4p, 480M
    ID 1d6b:0002 Linux Foundation 2.0 root hub

Tested-by: Adrien Thierry <athierry@...hat.com> # sa8540p-ride