linux-kernel - Re: [PATCH v4 0/3] Skip phy initialization for DWC3 USB Controllers

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Message-ID: <20220425024858.GA7052@hu-pkondeti-hyd.qualcomm.com>
Date:   Mon, 25 Apr 2022 08:18:58 +0530
From:   Pavan Kondeti <quic_pkondeti@...cinc.com>
To:     Sandeep Maheswaram <quic_c_sanm@...cinc.com>
CC:     Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Felipe Balbi <balbi@...nel.org>,
        Stephen Boyd <swboyd@...omium.org>,
        "Doug Anderson" <dianders@...omium.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        Mathias Nyman <mathias.nyman@...el.com>,
        <devicetree@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <quic_pkondeti@...cinc.com>, <quic_ppratap@...cinc.com>,
        <quic_kriskura@...cinc.com>, <quic_vpulyala@...cinc.com>
Subject: Re: [PATCH v4 0/3] Skip phy initialization for DWC3 USB Controllers

Hi Mathias,

On Thu, Apr 21, 2022 at 10:30:52AM +0530, Sandeep Maheswaram wrote:
> Runtime suspend of phy drivers was failing from DWC3 driver as
> runtime usage value is 2 because the phy is initialized from
> DWC3 core and HCD core.
> Some controllers like DWC3 and CDNS3 manage phy in their core drivers.
> This property can be set to avoid phy initialization in HCD core.
> 
> v4:
> Added the device tree binding patch in the series.
> 
> v3:
> Coming back to this series based on discussion at below thread
> https://patchwork.kernel.org/project/linux-arm-msm/patch/1648103831-12347-4-git-send-email-quic_c_sanm@quicinc.com/
> Dropped the dt bindings PATCH 1/3 in v2
> https://patchwork.kernel.org/project/linux-arm-msm/cover/1636353710-25582-1-git-send-email-quic_c_sanm@quicinc.com/ 
> 
> v2:
> Updated the commit descriptions.
> Changed subject prefix from dwc to dwc3.
> Increased props array size.
> 
> 
> Sandeep Maheswaram (3):
>   dt-bindings: usb: usb-xhci: Add bindings for usb-skip-phy-init
>     property
>   usb: host: xhci-plat: Add device property to set XHCI_SKIP_PHY_INIT
>     quirk
>   usb: dwc3: host: Set the property usb-skip-phy-init
> 
>  Documentation/devicetree/bindings/usb/usb-xhci.yaml | 4 ++++
>  drivers/usb/dwc3/host.c                             | 4 +++-
>  drivers/usb/host/xhci-plat.c                        | 3 +++
>  3 files changed, 10 insertions(+), 1 deletion(-)
> 

This is the latest series with bindings added as per Greg's comment. Can you
please pick up this series if you don't have any further comments.

Thanks,
Pavan