From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Herring Subject: Re: [PATCH v2] net: fec: Add "phy-reset-active-low" property to DT Date: Fri, 12 Feb 2016 09:20:11 -0600 Message-ID: <20160212152011.GA28563@rob-hp-laptop> References: <1455048072-869-1-git-send-email-bernhard@bwalle.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1455048072-869-1-git-send-email-bernhard@bwalle.de> Sender: linux-kernel-owner@vger.kernel.org To: Bernhard Walle Cc: fabio.estevam@freescale.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org List-Id: devicetree@vger.kernel.org On Tue, Feb 09, 2016 at 09:01:12PM +0100, Bernhard Walle wrote: > We need that for a custom hardware that needs the reverse reset > sequence. > > Signed-off-by: Bernhard Walle > --- > Changes compared to v1: > - Add documentation to 'phy-reset-gpios' that flags are ignored > as suggested by Andrew Lunn. > > Documentation/devicetree/bindings/net/fsl-fec.txt | 7 ++++++- > drivers/net/ethernet/freescale/fec_main.c | 8 ++++++-- > 2 files changed, 12 insertions(+), 3 deletions(-) > > diff --git a/Documentation/devicetree/bindings/net/fsl-fec.txt b/Documentation/devicetree/bindings/net/fsl-fec.txt > index a9eb611..0caa429 100644 > --- a/Documentation/devicetree/bindings/net/fsl-fec.txt > +++ b/Documentation/devicetree/bindings/net/fsl-fec.txt > @@ -7,11 +7,16 @@ Required properties: > - phy-mode : See ethernet.txt file in the same directory > > Optional properties: > -- phy-reset-gpios : Should specify the gpio for phy reset > +- phy-reset-gpios : Should specify the gpio for phy reset. Additional > + flags are ignored, see the non-standard 'phy-reset-active-low' property > + instead. > - phy-reset-duration : Reset duration in milliseconds. Should present > only if property "phy-reset-gpios" is available. Missing the property > will have the duration be 1 millisecond. Numbers greater than 1000 are > invalid and 1 millisecond will be used instead. > +- phy-reset-active-low : If present then the reset sequence using the GPIO > + specified in the "phy-reset-gpios" property is reversed (H=reset state, > + L=operation state). This is what the gpio flags are for. Why can't you use that? > - phy-supply : regulator that powers the Ethernet PHY. > - phy-handle : phandle to the PHY device connected to this device. > - fixed-link : Assume a fixed link. See fixed-link.txt in the same directory.