From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthias Kaehlcke Subject: Re: [PATCH 1/4] dt-bindings: usb: dwc2: Document quirk to reset PHY upon wakeup Date: Fri, 12 Apr 2019 16:42:18 -0700 Message-ID: <20190412234218.GX112750@google.com> References: <20190412224149.106971-1-dianders@chromium.org> <20190412224149.106971-2-dianders@chromium.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Return-path: Content-Disposition: inline In-Reply-To: <20190412224149.106971-2-dianders@chromium.org> Sender: linux-kernel-owner@vger.kernel.org To: Douglas Anderson Cc: Rob Herring , Minas Harutyunyan , Heiko Stuebner , Felipe Balbi , amstan@chromium.org, linux-rockchip@lists.infradead.org, linux-usb@vger.kernel.org, Randy Li , ryandcase@chromium.org, jwerner@chromium.org, Elaine Zhang , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Mark Rutland List-Id: devicetree@vger.kernel.org On Fri, Apr 12, 2019 at 03:41:46PM -0700, Douglas Anderson wrote: > On Rockchip rk3288 there's a hardware quirk where we need to assert > the reset signal to the PHY when we get a remote wakeup on one of the > two ports. Document this quirk in the bindings. > > Signed-off-by: Douglas Anderson > --- > > Documentation/devicetree/bindings/usb/dwc2.txt | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/Documentation/devicetree/bindings/usb/dwc2.txt b/Documentation/devicetree/bindings/usb/dwc2.txt > index 6dc3c4a34483..f70f3aee4bfc 100644 > --- a/Documentation/devicetree/bindings/usb/dwc2.txt > +++ b/Documentation/devicetree/bindings/usb/dwc2.txt > @@ -37,6 +37,8 @@ Refer to phy/phy-bindings.txt for generic phy consumer properties > - g-rx-fifo-size: size of rx fifo size in gadget mode. > - g-np-tx-fifo-size: size of non-periodic tx fifo size in gadget mode. > - g-tx-fifo-size: size of periodic tx fifo per endpoint (except ep0) in gadget mode. > +- snps,reset-phy-on-wake: If present indicates that we need to reset the PHY when > + we detect a wakeup. This is due to a hardware errata. > > Deprecated properties: > - g-use-dma: gadget DMA mode is automatically detected Reviewed-by: Matthias Kaehlcke