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=-8.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 BE8FEC433DF for ; Mon, 17 Aug 2020 13:29:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 96FD32075B for ; Mon, 17 Aug 2020 13:29:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597670955; bh=BymKps12XsZQl4YKZ1c0eB9rH+lInt76AzC41AOqUvE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=AGyZ38I7CmKDWFfH/ogrFj6ki8XhuEospd91HvXOQPkZrUzmRLfgpYovAijzhEEWM 6eKzQiTBib4DxrvBwVmyofNIAW7v8Pt6oeefjN8wd1dVwQ+gxjRgfG+12wAobka+8j jOqAzvYUmqYppWG7DdfiSrIPMXHExuwUM/f9Ac6I= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727953AbgHQN3O (ORCPT ); Mon, 17 Aug 2020 09:29:14 -0400 Received: from mail.kernel.org ([198.145.29.99]:58440 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728358AbgHQN3O (ORCPT ); Mon, 17 Aug 2020 09:29:14 -0400 Received: from dragon (80.251.214.228.16clouds.com [80.251.214.228]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 85F8D2072D; Mon, 17 Aug 2020 13:29:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597670953; bh=BymKps12XsZQl4YKZ1c0eB9rH+lInt76AzC41AOqUvE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=wpv5465BkVtFkvEjq8ovwgg4Ym9eooROzit5pFuUECfQjFRTG1KLS8YItLAfTi+ad V9ROkqnVpc3j67L3rgYU7thJeb9JGWCKI/JCqzkZhlRLgMjQRn3WzhRmQs5JuGHa3G r+SwuGpuGeix5DRooPEVYZg8yLmPs8pz7FGFBMcc= Date: Mon, 17 Aug 2020 21:29:04 +0800 From: Shawn Guo To: Chris Healy Cc: s.hauer@pengutronix.de, stefan@agner.ch, robh+dt@kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, festevam@gmail.com Subject: Re: [PATCH v2] ARM: dts: ZII: Disable HW Ethernet switch reset GPIOs Message-ID: <20200817132903.GG16951@dragon> References: <20200722203341.578651-1-cphealy@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200722203341.578651-1-cphealy@gmail.com> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Wed, Jul 22, 2020 at 01:33:41PM -0700, Chris Healy wrote: > From: Chris Healy > > Disable Ethernet switch reset GPIO with ZII platforms that have it > enabled. HW switch reset results in a reset of the copper PHYs > inside of the switch. We want to avoid this reset of the copper PHYs > in the switch as this results in unnecessary broader network disruption on > a soft reboot of the application processor. > > With the HW GPIO removed, the switch driver still performs a soft reset of > the switch core which has been shown to sufficiently meet our needs with > other ZII platforms that do not have the HW switch reset GPIO defined. > > Signed-off-by: Chris Healy Applied, thanks.