linux-kernel - RE: [PATCH v3 0/2] Skip phy initialization for DWC3 USB Controllers

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Message-ID: <DM6PR02MB4857A0ADCDA1558DE58E103ADFF29@DM6PR02MB4857.namprd02.prod.outlook.com>
Date:   Tue, 19 Apr 2022 10:17:53 +0000
From:   "Sandeep Maheswaram (Temp) (QUIC)" <quic_c_sanm@...cinc.com>
To:     "Sandeep Maheswaram (Temp) (QUIC)" <quic_c_sanm@...cinc.com>,
        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>
CC:     "linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Pavan Kumar Kondeti (QUIC)" <quic_pkondeti@...cinc.com>,
        "Pratham Pratap (QUIC)" <quic_ppratap@...cinc.com>,
        "Krishna Kurapati PSSNV (QUIC)" <quic_kriskura@...cinc.com>,
        "Vidya Sagar Pulyala (Temp) (QUIC)" <quic_vpulyala@...cinc.com>
Subject: RE: [PATCH v3 0/2] Skip phy initialization for DWC3 USB Controllers 

Hi Mathias, Felipe,

> -----Original Message-----
> From: Sandeep Maheswaram (Temp) (QUIC) <quic_c_sanm@...cinc.com>
> Sent: Thursday, April 7, 2022 3:01 PM
> To: 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>
> Cc: linux-arm-msm@...r.kernel.org; linux-usb@...r.kernel.org; linux-
> kernel@...r.kernel.org; Pavan Kumar Kondeti (QUIC)
> <quic_pkondeti@...cinc.com>; Pratham Pratap (QUIC)
> <quic_ppratap@...cinc.com>; Krishna Kurapati PSSNV (QUIC)
> <quic_kriskura@...cinc.com>; Vidya Sagar Pulyala (Temp) (QUIC)
> <quic_vpulyala@...cinc.com>; Sandeep Maheswaram (Temp) (QUIC)
> <quic_c_sanm@...cinc.com>
> Subject: [PATCH v3 0/2] Skip phy initialization for DWC3 USB Controllers
> 
> 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.
> 
> 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@...cinc.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@...cinc.com/
> 
> v2:
> Updated the commit descriptions.
> Changed subject prefix from dwc to dwc3.
> Increased props array size.
> 
> Sandeep Maheswaram (2):
>   usb: host: xhci-plat: Add device property to set XHCI_SKIP_PHY_INIT
>     quirk
>   usb: dwc3: host: Set the property usb-skip-phy-init
> 
>  drivers/usb/dwc3/host.c      | 4 +++-
>  drivers/usb/host/xhci-plat.c | 3 +++
>  2 files changed, 6 insertions(+), 1 deletion(-)
> 
> --
> 2.7.4

Please let me know your opinion about this series.

Regards
Sandeep