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

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Message-ID: <20230408014251.6cyjwuvsgu7dmz53@synopsys.com>
Date:   Sat, 8 Apr 2023 01:42:57 +0000
From:   Thinh Nguyen <Thinh.Nguyen@...opsys.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-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "quic_pkondeti@...cinc.com" <quic_pkondeti@...cinc.com>,
        "quic_ppratap@...cinc.com" <quic_ppratap@...cinc.com>,
        "quic_wcheng@...cinc.com" <quic_wcheng@...cinc.com>,
        "quic_jackp@...cinc.com" <quic_jackp@...cinc.com>,
        "quic_harshq@...cinc.com" <quic_harshq@...cinc.com>,
        "ahalaney@...hat.com" <ahalaney@...hat.com>,
        "quic_shazhuss@...cinc.com" <quic_shazhuss@...cinc.com>
Subject: Re: [PATCH v6 0/8] Add multiport support for DWC3 controllers

On Wed, Apr 05, 2023, Krishna Kurapati wrote:
> Currently the DWC3 driver supports only single port controller which
> requires at most two PHYs ie HS and SS PHYs. There are SoCs that has
> DWC3 controller with multiple ports that can operate in host mode.
> Some of the port supports both SS+HS and other port supports only HS
> mode.
> 
> This change primarily refactors the Phy logic in core driver to allow
> multiport support with Generic Phy's.
> 
> Chananges have been tested on  QCOM SoC SA8295P which has 4 ports (2
> are HS+SS capable and 2 are HS only capable).
> 
> Changes in v6:
> Updated comments in code after.
> Updated variables names appropriately as per review comments.
> Updated commit text in patch-2 and added additional info as per review
> comments.
> The patch header in v5 doesn't have "PATHCH v5" notation present. Corrected
> it in this version.
> 
> Changes in v5:
> Added DT support for first port of Teritiary USB controller on SA8540-Ride
> Added support for reading port info from XHCI Extended Params registers.
> 
> Changes in RFC v4:
> Added DT support for SA8295p.
> 
> Changes in RFC v3:
> Incase any PHY init fails, then clear/exit the PHYs that
> are already initialized.
> 
> Changes in RFC v2:
> Changed dwc3_count_phys to return the number of PHY Phandles in the node.
> This will be used now in dwc3_extract_num_phys to increment num_usb2_phy 
> and num_usb3_phy.
> 
> Added new parameter "ss_idx" in dwc3_core_get_phy_ny_node and changed its
> structure such that the first half is for HS-PHY and second half is for
> SS-PHY.
> 
> In dwc3_core_get_phy, for multiport controller, only if SS-PHY phandle is
> present, pass proper SS_IDX else pass -1.
> 
> Link to v5: https://urldefense.com/v3/__https://lore.kernel.org/all/20230310163420.7582-1-quic_kriskura@quicinc.com/__;!!A4F2R9G_pg!b6YnNIov1GQE0nNkw05sW71n3ZpTM04st-Y-J5ksBUel2ZZfWr9ZA_AE4ZtBAADuCpJ4C4RCr9Di1-fOfqJk1O7oBPDywQ$ 
> Link to RFC v4: https://urldefense.com/v3/__https://lore.kernel.org/all/20230115114146.12628-1-quic_kriskura@quicinc.com/__;!!A4F2R9G_pg!b6YnNIov1GQE0nNkw05sW71n3ZpTM04st-Y-J5ksBUel2ZZfWr9ZA_AE4ZtBAADuCpJ4C4RCr9Di1-fOfqJk1O5p58Ga7A$ 
> Link to RFC v3: https://urldefense.com/v3/__https://lore.kernel.org/all/1654709787-23686-1-git-send-email-quic_harshq@quicinc.com/*r__;Iw!!A4F2R9G_pg!b6YnNIov1GQE0nNkw05sW71n3ZpTM04st-Y-J5ksBUel2ZZfWr9ZA_AE4ZtBAADuCpJ4C4RCr9Di1-fOfqJk1O5eLTSOZg$ 
> Link to RFC v2: https://urldefense.com/v3/__https://lore.kernel.org/all/1653560029-6937-1-git-send-email-quic_harshq@quicinc.com/*r__;Iw!!A4F2R9G_pg!b6YnNIov1GQE0nNkw05sW71n3ZpTM04st-Y-J5ksBUel2ZZfWr9ZA_AE4ZtBAADuCpJ4C4RCr9Di1-fOfqJk1O5CAsP83Q$ 
> 
> 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(-)
> 
> -- 
> 2.40.0
> 

Please check if your patches and mailing client. Looks like they are
corrupted.

Thanks,
Thinh