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=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 07932C2D0EE for ; Tue, 31 Mar 2020 08:19:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D28B920B80 for ; Tue, 31 Mar 2020 08:19:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b="muFJAbLQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730147AbgCaIT1 (ORCPT ); Tue, 31 Mar 2020 04:19:27 -0400 Received: from pandora.armlinux.org.uk ([78.32.30.218]:37666 "EHLO pandora.armlinux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729997AbgCaIT1 (ORCPT ); Tue, 31 Mar 2020 04:19:27 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=fYhQraFAMqVrGJISSyWmaqJBEQlzF/bEhXFhgru7//g=; b=muFJAbLQuD2T3Rm9JSGJzbEpz 6QT405MpkY3OE/Gp3IfEKaafkOiA7IxzCnKgctG0/25tdbpjddwDYq/IfNPPZv+dbWUbTesoXvOc8 tHX+XQRzoNJlqdMgRwvDQ4uGDucwH7bRzrvxc5LxJo4cnGPxdQZo8qPPiky0qSAs2prlnacrL2ybC SJWqcVoDLsAh9Rn7wMIqVsCoHHKkCnnOso5pLQoxTCttzydqLEXzXR7NEXi3z4KeAQ71Kxwl/KROJ fIhD4aq7XUVwkTuE9h7XzqML9E5meYlku7JfKHb1dMbz+yonaO1v7pgpypSXBT6+ine8tdMNxRlzL qBfrA46LA==; Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:43706) by pandora.armlinux.org.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jJC7E-00079Q-5k; Tue, 31 Mar 2020 09:19:20 +0100 Received: from linux by shell.armlinux.org.uk with local (Exim 4.92) (envelope-from ) id 1jJC7C-0007yQ-VL; Tue, 31 Mar 2020 09:19:18 +0100 Date: Tue, 31 Mar 2020 09:19:18 +0100 From: Russell King - ARM Linux admin To: Marc Kleine-Budde Cc: Florian Fainelli , Andrew Lunn , netdev@vger.kernel.org, Sascha Hauer , linux-kernel@vger.kernel.org, Oleksij Rempel , linux-imx@nxp.com, kernel@pengutronix.de, David Jander , Shawn Guo , Fabio Estevam , linux-arm-kernel@lists.infradead.org, Heiner Kallweit Subject: Re: [PATCH v2] ARM: imx: allow to disable board specific PHY fixups Message-ID: <20200331081918.GK25745@shell.armlinux.org.uk> References: <20200329110457.4113-1-o.rempel@pengutronix.de> <20200329150854.GA31812@lunn.ch> <20200330052611.2bgu7x4nmimf7pru@pengutronix.de> <40209d08-4acb-75c5-1766-6d39bb826ff9@gmail.com> <20200330174114.GG25745@shell.armlinux.org.uk> <5ae5c0de-f05c-5e3f-86e1-a9afdd3e1ef1@pengutronix.de> <20200331075457.GJ25745@shell.armlinux.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Tue, Mar 31, 2020 at 10:00:12AM +0200, Marc Kleine-Budde wrote: > On 3/31/20 9:54 AM, Russell King - ARM Linux admin wrote: > > On Tue, Mar 31, 2020 at 09:47:19AM +0200, Marc Kleine-Budde wrote: > >> On 3/30/20 7:41 PM, Russell King - ARM Linux admin wrote: > >>>>> arch/arm/mach-imx/mach-imx6q.c:167: phy_register_fixup_for_uid(PHY_ID_KSZ9021, MICREL_PHY_ID_MASK, > >>>>> arch/arm/mach-imx/mach-imx6q.c:169: phy_register_fixup_for_uid(PHY_ID_KSZ9031, MICREL_PHY_ID_MASK, > >>>>> arch/arm/mach-imx/mach-imx6q.c:171: phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffef, > >>>>> arch/arm/mach-imx/mach-imx6q.c:173: phy_register_fixup_for_uid(PHY_ID_AR8035, 0xffffffef, > >>> > >>> As far as I'm concerned, the AR8035 fixup is there with good reason. > >>> It's not just "random" but is required to make the AR8035 usable with > >>> the iMX6 SoCs. Not because of a board level thing, but because it's > >>> required for the AR8035 to be usable with an iMX6 SoC. > >> > >> Is this still ture, if the AR8035 is attached to a switch behind an iMX6? > > > > Do you know of such a setup, or are you talking about theoretical > > situations? > > Granted, not for the AR8035, but for one of the KSZ Phys. This is why > Oleksij started looking into this issue in the first place. Maybe there's an easy solution to this - check whether the PHY being fixed up is connected to the iMX6 SoC: static bool phy_connected_to(struct phy_device *phydev, const struct of_device_id *matches) { struct device_node *np, *phy_np; for_each_matching_node(np, matches) { phy_np = of_parse_phandle(np, "phy-handle", 0); if (!phy_np) phy_np = of_parse_phandle(np, "phy", 0); if (!phy_np) phy_np = of_parse_phandle(np, "phy-device", 0); if (phy_np && phydev->mdio.dev.of_node == phy_np) { of_node_put(phy_np); of_node_put(np); return true; } of_node_put(phy_np); } return false; } static struct of_device_id imx_fec_ids[] = { { .compatible = "fsl,imx6q-fec", }, ... { }, }; static bool phy_connected_to_fec(struct phy_device *phydev) { return phy_connected_to(phydev, imx_fec_ids); } and then in the fixups: if (!phy_connected_to_fec(phydev)) return 0; ? -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 10.2Mbps down 587kbps up