linux-kernel - Re: [PATCH] dt-bindings: usb: dwc3: xilinx: Add interrupt-names to include hibernation interrupt

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Date:   Thu, 27 Apr 2023 09:18:14 -0500
From:   Rob Herring <robh@...nel.org>
To:     "Mehta, Piyush" <piyush.mehta@....com>
Cc:     "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        "michal.simek@...inx.com" <michal.simek@...inx.com>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Simek, Michal" <michal.simek@....com>,
        "Paladugu, Siva Durga Prasad" <siva.durga.prasad.paladugu@....com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "git (AMD-Xilinx)" <git@....com>
Subject: Re: [PATCH] dt-bindings: usb: dwc3: xilinx: Add interrupt-names to
 include hibernation interrupt

On Fri, Apr 21, 2023 at 8:28 AM Mehta, Piyush <piyush.mehta@....com> wrote:
>
> Hi
>
> > -----Original Message-----
> > From: Rob Herring <robh@...nel.org>
> > Sent: Wednesday, April 19, 2023 12:10 AM
> > To: Mehta, Piyush <piyush.mehta@....com>
> > Cc: gregkh@...uxfoundation.org; krzysztof.kozlowski+dt@...aro.org;
> > michal.simek@...inx.com; linux-usb@...r.kernel.org;
> > devicetree@...r.kernel.org; linux-kernel@...r.kernel.org; Simek, Michal
> > <michal.simek@....com>; Paladugu, Siva Durga Prasad
> > <siva.durga.prasad.paladugu@....com>; linux-arm-
> > kernel@...ts.infradead.org; git (AMD-Xilinx) <git@....com>
> > Subject: Re: [PATCH] dt-bindings: usb: dwc3: xilinx: Add interrupt-names to
> > include hibernation interrupt
> >
> > On Wed, Apr 12, 2023 at 11:38:43AM +0530, Piyush Mehta wrote:
> > > The hibernation feature enabled for Xilinx Versal NET SoC in DWC3 IP.
> > > Added host mode interrupts and "usb-wakeup" interrupt-names optional
> > > property in the binding schema to capture remote-wakeup and connect/
> > > disconnect event in the hibernation state.
> > >
> > > Xilinx dwc3-core uses "host" and "otg" interrupts interrupt-names DT
> > > properties from dwc3-core.
> >
> > Is wakeup really not implemented in the DWC3 core, but outside it?
>
> Wakeup is implemented inside the dwc3-core.

Then it goes in the dwc3 node.

> Initially we planned to implement wakeup interrupt name/interrupt optional property in the dwc3-core.
> However, looking at other vendor wakeup interrupt implementation (Commit: dd566faebe9f dt-bindings: usb: qcom,dwc3: refine interrupt requirements)
> we moved wakeup property to xilinx USB binding.

That one looks like the phy implements wake-up? I don't know really,
but doesn't seem like one to copy.

Rob