From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_NEOMUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B183EECDFD0 for ; Fri, 14 Sep 2018 16:28:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6D2C820861 for ; Fri, 14 Sep 2018 16:28:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6D2C820861 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728471AbeINVn4 (ORCPT ); Fri, 14 Sep 2018 17:43:56 -0400 Received: from mail.bootlin.com ([62.4.15.54]:50220 "EHLO mail.bootlin.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727749AbeINVnz (ORCPT ); Fri, 14 Sep 2018 17:43:55 -0400 Received: by mail.bootlin.com (Postfix, from userid 110) id 78D0520877; Fri, 14 Sep 2018 18:28:39 +0200 (CEST) Received: from qschulz (LFbn-1-10589-128.w90-89.abo.wanadoo.fr [90.89.181.128]) by mail.bootlin.com (Postfix) with ESMTPSA id 20F5D207D4; Fri, 14 Sep 2018 18:28:29 +0200 (CEST) Date: Fri, 14 Sep 2018 18:28:28 +0200 From: Quentin Schulz To: Andrew Lunn Cc: alexandre.belloni@bootlin.com, ralf@linux-mips.org, paul.burton@mips.com, jhogan@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com, davem@davemloft.net, f.fainelli@gmail.com, allan.nielsen@microchip.com, linux-mips@linux-mips.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, thomas.petazzoni@bootlin.com, antoine.tenart@bootlin.com Subject: Re: [PATCH net-next 2/7] net: phy: mscc: add support for VSC8584 PHY Message-ID: <20180914162828.5e75ffh5sig4om3d@qschulz> References: <20180914131846.GG14865@lunn.ch> <20180914132930.fphdm3dm2incetbq@qschulz> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="lrvuohlm2to6nryf" Content-Disposition: inline In-Reply-To: <20180914132930.fphdm3dm2incetbq@qschulz> User-Agent: NeoMutt/20171215 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --lrvuohlm2to6nryf Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi Andrew, On Fri, Sep 14, 2018 at 03:29:30PM +0200, Quentin Schulz wrote: > Hi Andrew, >=20 > On Fri, Sep 14, 2018 at 03:18:46PM +0200, Andrew Lunn wrote: > > > Most of the init sequence of a PHY of the package is common to all PH= Ys > > > in the package, thus we use the SMI broadcast feature which enables us > > > to propagate a write in one register of one PHY to all PHYs in the > > > package. > >=20 > > Hi Quinten > >=20 > > Could you say a bit more about the broadcast. Does the SMI broadcast > > go to all PHY everywhere on an MDIO bus, or only all PHYs within one > > package? I'm just thinking about the case you need two of these > > packages to cover 8 switch ports. > >=20 >=20 > Ah sorry, that wasn't very explicit. That's a feature on the PHY side so > my wildest guess is that it wouldn't impact any other PHY outside of > this package. Affecting any other PHY on the bus is counter-intuitive to > me but I'll ask the HW engineers for confirmation. >=20 Confirmed by HW engineers, it only impacts PHYs in the same package. Quentin --lrvuohlm2to6nryf Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEXeEYjDsJh38OoyMzhLiadT7g8aMFAlub4awACgkQhLiadT7g 8aP1fg//V+Mup3knhZdlR5JAs/en28BkBQ1Tc76y+7zpzgqSMjAyP2gfg4vMoKz2 3H1Y+jQcX0QopeLDwks0To8eyHwYcq//Wvlv6XSvl7W3/8qPYqIaTXlWZD+O4smK d0+MP8u5silgh5hS9NKDBKdKheXirH7gdCDLbXDhY2TMCDYYTfrx6Xi3dwRfdivc x+Zhhmp14p5qhyvEDE7IUSzMcqGo9tKKwR6VQPHtMCyJ3+Wfe4kmTm8nkTFwL1fF T2l1V1U7ROEQXhyUni61JEH33CZzp8WwOwOkaUjvBIOsur8K+xb7LboHYvh5b0ni szCdTBqtybkKxUT4FHLm2xWexBBDb5vWQYOQUxMxybe/xfsIsGLUX2MQt9g4PNMO MTWW7H662G9H0lsqcp4/e05eyIkroBX8Qt547NuQ3dr+RjPn1C9ZbwEPz4C/14+T GaXc+sncNluq2A+VaMGTx2ZjZOo/Y+coVdhm9nuup9kMibboAd10KqchPBvtBGS0 4IqacfOHH+oNzAkoq30s6Ta4uixULZls6Exfzrn0yKLffxwOeD3fPisCwLGsW2zV DN1L0uubJWCkTFYuO5tilgZrl3HuF1f4cu/xhtl2kq0bMm3pgAVK/UXXQcqnZ/Rh bFNMfRwHSSMhAnDHKIXzmLgNf9iGE2skB/QyNuvZr9Nc+7VxlO4= =qNw+ -----END PGP SIGNATURE----- --lrvuohlm2to6nryf--