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Wed, 20 Oct 2021 02:05:30 -0700 Received: from localhost (10.10.115.15) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.2176.14 via Frontend Transport; Wed, 20 Oct 2021 02:05:29 -0700 Date: Wed, 20 Oct 2021 11:07:03 +0200 From: Horatiu Vultur To: Rob Herring CC: Kishon Vijay Abraham I , Vinod , Andrew Lunn , Alexandre Belloni , , , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH v3 2/3] dt-bindings: phy: Add constants for lan966x serdes Message-ID: <20211020090703.sspta6qltdymylig@soft-dev3-1.localhost> References: <20211015123920.176782-1-horatiu.vultur@microchip.com> <20211015123920.176782-3-horatiu.vultur@microchip.com> <20211019091258.3uet6lp3mxaoliqt@soft-dev3-1.localhost> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211020_020532_624993_761DFA5A X-CRM114-Status: GOOD ( 29.33 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org The 10/19/2021 08:38, Rob Herring wrote: > > On Tue, Oct 19, 2021 at 4:11 AM Horatiu Vultur > wrote: > > > > The 10/18/2021 14:28, Rob Herring wrote: > > > > > > On Fri, Oct 15, 2021 at 02:39:19PM +0200, Horatiu Vultur wrote: > > > > Lan966x has: 2 integrated PHYs, 3 SerDes and 2 RGMII interfaces. Which > > > > requires to be muxed based on the HW representation. > > > > > > > > So add constants for each interface to be able to distinguish them. > > > > > > > > Signed-off-by: Horatiu Vultur > > > > --- > > > > include/dt-bindings/phy/phy-lan966x-serdes.h | 14 ++++++++++++++ > > > > 1 file changed, 14 insertions(+) > > > > create mode 100644 include/dt-bindings/phy/phy-lan966x-serdes.h > > > > > > > > diff --git a/include/dt-bindings/phy/phy-lan966x-serdes.h b/include/dt-bindings/phy/phy-lan966x-serdes.h > > > > new file mode 100644 > > > > index 000000000000..8a05f93ecf41 > > > > --- /dev/null > > > > +++ b/include/dt-bindings/phy/phy-lan966x-serdes.h > > > > @@ -0,0 +1,14 @@ > > > > +/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */ > > > > + > > > > +#ifndef __PHY_LAN966X_SERDES_H__ > > > > +#define __PHY_LAN966X_SERDES_H__ > > > > + > > > > +#define PHY(x) (x) > > > > +#define PHY_MAX PHY(2) > > > > +#define SERDES6G(x) (PHY_MAX + 1 + (x)) > > > > +#define SERDES6G_MAX SERDES6G(3) > > > > +#define RGMII(x) (SERDES6G_MAX + 1 + (x)) > > > > +#define RGMII_MAX RGMII(2) > > > > +#define SERDES_MAX (RGMII_MAX + 1) > > > > > > I still don't understand. #phy-cells description says we have: > > > > > > > > > > > > But here it's 3 numbers. How are these defines used to fill in the 2 > > > cells? > > > > Actually they are still only a number. Or maybe I am missing something. > > So all the defines apply to the 2nd cell? That's what's missing. Exactly. > The cell description needs to spell all this out. 3 different modes or > whatever. Explain what the h/w is comprised of in the top level > 'description'. I will add this description. > > > > > Maybe an example will help: > > > > --- > > serdes: serdes@e2004010 { > > compatible = "microchip,lan966x-serdes"; > > reg = <0xe202c000 0x9c>, <0xe2004010 0x4>; > > #phy-cells = <2>; > > }; > > > > &port0 { > > ... > > phys = <&serdes 0 SERDES6G(1)>; > > ... > > }; > > > > &port1 { > > ... > > phys = <&serdes 1 PHY(0)>; > > I think CU was better, just needed some comments. PHY is pretty vague. Same here, I will update it. > > > ... > > } > > > > ... > > --- > > > > Here are some existing examples based on which I have created this patch > > series: > > https://elixir.bootlin.com/linux/v5.15-rc6/source/arch/mips/boot/dts/mscc/ocelot_pcb120.dts#L99 > > None of which use PHY() or RGMII()... > > > > https://elixir.bootlin.com/linux/v5.15-rc6/source/arch/mips/boot/dts/mscc/ocelot.dtsi#L274 > > > > > > > > Rob > > > > -- > > /Horatiu -- /Horatiu -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy