Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755814AbaBFQ5w (ORCPT ); Thu, 6 Feb 2014 11:57:52 -0500 Received: from top.free-electrons.com ([176.31.233.9]:42051 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751500AbaBFQ5u (ORCPT ); Thu, 6 Feb 2014 11:57:50 -0500 Date: Thu, 6 Feb 2014 13:57:41 -0300 From: Ezequiel Garcia To: Sebastian Hesselbarth Cc: David Miller , f.fainelli@gmail.com, mugunthanvnm@ti.com, netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Andrew Lunn Subject: Re: [PATCH v2 0/5] net: phy: Ethernet PHY powerdown optimization Message-ID: <20140206165740.GA12542@localhost> References: <1386513631-11284-1-git-send-email-sebastian.hesselbarth@gmail.com> <1386926429-28818-1-git-send-email-sebastian.hesselbarth@gmail.com> <20131217.144313.1563516273987934449.davem@davemloft.net> <52F141AE.8010402@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <52F141AE.8010402@gmail.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Sebastian, On Tue, Feb 04, 2014 at 08:38:22PM +0100, Sebastian Hesselbarth wrote: > On 12/17/2013 08:43 PM, David Miller wrote: > > From: Sebastian Hesselbarth > > Date: Fri, 13 Dec 2013 10:20:24 +0100 > > > >> This is v2 of the ethernet PHY power optimization patches to reduce > >> power consumption of network PHYs with link that are either unused or > >> the corresponding netdev is down. > >> > >> Compared to the last version, this patch set drops a patch to disable > >> unused PHYs after late initcall, as it is not compatible with a modular > >> mdio bus [1]. I'll investigate different ways to have a modular mdio bus > >> driver get notified when driver loading is done. > >> > >> Again, a branch with v2 applied to v3.13-rc2 can also be found at > >> https://github.com/shesselba/linux-dove.git topic/ethphy-power-v2 > >> > >> [1] http://www.spinics.net/lists/arm-kernel/msg293028.html > > > > Series applied, thanks. > > [..] > > as expected the above patches create a Linux to bootloader dependency > that surfaces dumb bootloaders not initializing PHYs correctly. > > Andrew has a Kirkwood based board that does not power-up and restart > auto-negotiation on the powered down PHY after a warm restart. While > this specific bootloader allows a soft-workaround by issuing the > required PHY writes before accessing the interface, others may not. > I'm also having this same issue on Kirkwood USI Topkick, running v3.14-rc1. -- Ezequiel García, Free Electrons Embedded Linux, Kernel and Android Engineering http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/