linux-kernel - RE: [PATCH v2 RESEND 1/2] usb: dwc3: core: configure TX/RX threshold for DWC3

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Message-ID: <dfe06de8a0ab44bca5b1bb51a342f5e7@realtek.com>
Date:   Tue, 12 Sep 2023 03:39:46 +0000
From:   Stanley Chang[昌育德] 
        <stanley_chang@...ltek.com>
To:     Thinh Nguyen <Thinh.Nguyen@...opsys.com>
CC:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Felipe Balbi <balbi@...nel.org>,
        "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>
Subject: RE: [PATCH v2 RESEND 1/2] usb: dwc3: core: configure TX/RX threshold for DWC3_IP

Hi Thinh,

> > > >
> > > > diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
> > > > index
> > > > 9c6bf054f15d..1f74a53816c3 100644
> > > > --- a/drivers/usb/dwc3/core.c
> > > > +++ b/drivers/usb/dwc3/core.c
> > > > @@ -1246,6 +1246,39 @@ static int dwc3_core_init(struct dwc3 *dwc)
> > > >               }
> > > >       }
> > > >
> > > > +     if (DWC3_IP_IS(DWC3)) {
> > >
> > > Would you mind also add the checks for DWC_usb31 and DWC_usb32?
> Both
> > > the
> > > DWC_usb31 and DWC_usb32 share the same field offsets within
> > > GTX/RXTHRCFG registers. The macros are already defined for those IPs.
> >
> > DWC3 and DWC31, DWC32 seem to have different register definition as
> follows.
> 
> Yes. That's what I meant. They are already define in the core.h for DWC_usb31.
> DWC_usb32 also shares the same offsets as DWC_usb31 for this.
> Can you also include the setting of GTX/RXTHRCFG logic for those 2 IPs?
> 
I understand. I will add them.

Thanks,
Stanley