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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 00350C4332F for ; Wed, 9 Mar 2022 12:18:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232498AbiCIMTv (ORCPT ); Wed, 9 Mar 2022 07:19:51 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34772 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232360AbiCIMTo (ORCPT ); Wed, 9 Mar 2022 07:19:44 -0500 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 275B3128666 for ; Wed, 9 Mar 2022 04:18:46 -0800 (PST) Received: from ptx.hi.pengutronix.de ([2001:67c:670:100:1d::c0]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nRvH4-0008IN-H2; Wed, 09 Mar 2022 13:18:38 +0100 Received: from ore by ptx.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1nRvH1-0000g4-SU; Wed, 09 Mar 2022 13:18:35 +0100 Date: Wed, 9 Mar 2022 13:18:35 +0100 From: Oleksij Rempel To: "David S. Miller" , Jakub Kicinski , Andrew Lunn , Heiner Kallweit , Russell King Cc: kernel@pengutronix.de, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, netdev@vger.kernel.org, paskripkin@gmail.com Subject: net: asix: best way to handle orphan PHYs Message-ID: <20220309121835.GA15680@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline X-Sent-From: Pengutronix Hildesheim X-URL: http://www.pengutronix.de/ X-IRC: #ptxdist @freenode X-Accept-Language: de,en X-Accept-Content-Type: text/plain X-Uptime: 08:30:44 up 88 days, 16:16, 77 users, load average: 0.22, 0.28, 0.24 User-Agent: Mutt/1.10.1 (2018-07-13) X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::c0 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello all, I have ASIX based USB Ethernet adapter with two PHYs: internal and external. The internal PHY is enabled by default and there seems to be no way to disable internal PHY on the MAC level without affecting the external PHY. What is the preferred method to suspend internal PHY? Currently I have following options: - suspend PHY in the probe function of the PHY driver - get the phydev in the MAC driver and call phy_suspend() - whisper magic numbers from the MAC driver directly this the MDIO bus. Are there other options? Regards, Oleksij -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |