Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751578AbdHPJNI (ORCPT ); Wed, 16 Aug 2017 05:13:08 -0400 Received: from mail-wr0-f193.google.com ([209.85.128.193]:37520 "EHLO mail-wr0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751068AbdHPJNF (ORCPT ); Wed, 16 Aug 2017 05:13:05 -0400 Date: Wed, 16 Aug 2017 11:12:54 +0200 From: Corentin Labbe To: Florian Fainelli Cc: Chen-Yu Tsai , robh+dt@kernel.org, mark.rutland@arm.com, Russell King , Maxime Ripard , Giuseppe Cavallaro , alexandre.torgue@st.com, netdev , devicetree , linux-kernel , linux-arm-kernel , andrew@lunn.ch Subject: Re: [PATCH 2/3] ARM: sun8i: sunxi-h3-h5: add phy-is-integrated property to internal PHY Message-ID: <20170816091254.GB5732@Red> References: <20170810085129.20463-1-clabbe.montjoie@gmail.com> <20170810085129.20463-3-clabbe.montjoie@gmail.com> <20170811080543.GA25147@Red> <20170811081920.GB25147@Red> <20170811132526.GD25147@Red> <302496B2-46F1-456D-A9A0-8257B5582695@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <302496B2-46F1-456D-A9A0-8257B5582695@gmail.com> User-Agent: Mutt/1.7.2 (2016-11-26) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3704 Lines: 92 On Fri, Aug 11, 2017 at 08:03:29AM -0700, Florian Fainelli wrote: > On August 11, 2017 6:25:26 AM PDT, Corentin Labbe wrote: > >On Fri, Aug 11, 2017 at 04:22:11PM +0800, Chen-Yu Tsai wrote: > >> On Fri, Aug 11, 2017 at 4:19 PM, Corentin Labbe > >> wrote: > >> > On Fri, Aug 11, 2017 at 04:11:13PM +0800, Chen-Yu Tsai wrote: > >> >> On Fri, Aug 11, 2017 at 4:05 PM, Corentin Labbe > >> >> wrote: > >> >> > On Fri, Aug 11, 2017 at 10:42:51AM +0800, Chen-Yu Tsai wrote: > >> >> >> Hi, > >> >> >> > >> >> >> On Thu, Aug 10, 2017 at 4:51 PM, Corentin Labbe > >> >> >> wrote: > >> >> >> > This patch add the new phy-is-integrated property to the > >internal PHY > >> >> >> > node. > >> >> >> > > >> >> >> > Signed-off-by: Corentin Labbe > >> >> >> > --- > >> >> >> > arch/arm/boot/dts/sunxi-h3-h5.dtsi | 1 + > >> >> >> > 1 file changed, 1 insertion(+) > >> >> >> > > >> >> >> > diff --git a/arch/arm/boot/dts/sunxi-h3-h5.dtsi > >b/arch/arm/boot/dts/sunxi-h3-h5.dtsi > >> >> >> > index 4b599b5d26f6..54fc24e4c569 100644 > >> >> >> > --- a/arch/arm/boot/dts/sunxi-h3-h5.dtsi > >> >> >> > +++ b/arch/arm/boot/dts/sunxi-h3-h5.dtsi > >> >> >> > @@ -425,6 +425,7 @@ > >> >> >> > reg = <1>; > >> >> >> > clocks = <&ccu > >CLK_BUS_EPHY>; > >> >> >> > resets = <&ccu > >RST_BUS_EPHY>; > >> >> >> > + phy-is-integrated; > >> >> >> > >> >> >> You also need to "delete" this property at the board level for > >> >> >> any board that has the external PHY at address <1>. Otherwise > >> >> >> they will stop working. This is due to the internal and > >external > >> >> >> PHYs having the same path and node name in the device tree, so > >> >> >> they are effectively the same node. > >> >> >> > >> >> >> ChenYu > >> >> >> > >> >> > > >> >> > They have not the same name, ext_rgmii_phy vs int_mii_phy. > >> >> > >> >> That is just the label. The label plays no part in device tree > >merging. The path > >> >> > >> >> /soc/ethernet@1c30000/mdio/ethernet-phy@1 > >> >> > >> >> is the same. You can look under > >> >> > >> >> /proc/device-tree/soc/ethernet@1c30000/mdio > >> >> > >> >> on the OrangePI Plus 2E or any other H3 board that uses an > >> >> external PHY at address 1. > >> >> > >> >> ChenYu > >> > > >> > Since we get the phy node by phy-handle and not by path, I think > >all should be good. > >> > >> You are not getting me. The fact that the two seemingly separate > >> nodes are merged together means, whatever properties you put in > >> the internal PHY node, also affect the external PHY node. Once > >> compiled, they are the SAME node. > > > >Hello Rob, florian, mark > > > >Adding a delete property on all external ethernet-phy@1 is a bit > >overkill, and I dont like the idea that nodes are merged. > > This is not exactly up to you that's just how DTC works. > > >What do you think about other possible solutions: > >- Using integrated-phy@1 for the integrated PHY node name > > That might be okay although you are using now a seemingly non-standard unit name. > > >- Using a fake address like 31 (see patch below) > > You could also drop the address part in the unit name although we'd probably get a DTC warning for that. > > I suspect both of your solutions and what I mentioned above will be producing DTC warnings to some extent... Rob what do you think? > I think I found an easier solution, putting phy-is-integrated on board DT nodes only. I will send an updated serie. Regards