From: ezequiel.garcia@free-electrons.com (Ezequiel Garcia)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 0/5] net: phy: Ethernet PHY powerdown optimization
Date: Thu, 6 Feb 2014 13:57:41 -0300 [thread overview]
Message-ID: <20140206165740.GA12542@localhost> (raw)
In-Reply-To: <52F141AE.8010402@gmail.com>
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 <sebastian.hesselbarth@gmail.com>
> > 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 Garc?a, Free Electrons
Embedded Linux, Kernel and Android Engineering
http://free-electrons.com
next prev parent reply other threads:[~2014-02-06 16:57 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-20 20:21 [PATCH RFC v1 0/7] net: phy: Ethernet PHY powerdown optimization Sebastian Hesselbarth
2013-11-20 20:21 ` [PATCH RFC v1 1/7] net: phy: marvell: provide genphy suspend/resume Sebastian Hesselbarth
2013-11-20 20:21 ` [PATCH RFC v1 2/7] net: phy: provide phy_resume/phy_suspend helpers Sebastian Hesselbarth
2013-11-20 20:36 ` Florian Fainelli
2013-11-20 20:21 ` [PATCH RFC v1 3/7] net: phy: resume/suspend PHYs on attach/detach Sebastian Hesselbarth
2013-11-20 20:21 ` [PATCH RFC v1 4/7] net: phy: suspend unused PHYs on mdio_bus in late_initcall Sebastian Hesselbarth
2013-11-20 20:58 ` Florian Fainelli
2013-11-20 21:05 ` Sebastian Hesselbarth
2013-11-20 22:36 ` Florian Fainelli
2013-11-20 20:21 ` [PATCH RFC v1 5/7] net: mv643xx_eth: resume/suspend PHY on port start/stop Sebastian Hesselbarth
2013-11-20 20:21 ` [PATCH RFC v1 6/7] net: mvneta: " Sebastian Hesselbarth
2013-11-20 20:21 ` [PATCH RFC v1 7/7] net: cpsw: " Sebastian Hesselbarth
2013-11-20 20:48 ` Florian Fainelli
2013-11-20 20:57 ` Sebastian Hesselbarth
2013-11-21 8:35 ` Mugunthan V N
2013-11-21 8:41 ` Sebastian Hesselbarth
2013-11-20 20:36 ` [PATCH RFC v1 0/7] net: phy: Ethernet PHY powerdown optimization David Miller
2013-11-20 20:54 ` Sebastian Hesselbarth
2013-11-20 21:10 ` Florian Fainelli
2013-11-20 21:20 ` Sebastian Hesselbarth
2013-11-20 22:15 ` David Miller
2013-12-04 15:44 ` [PATCH RFCv2 0/6] " Sebastian Hesselbarth
2013-12-05 7:57 ` Mugunthan V N
2013-12-06 0:16 ` Florian Fainelli
2013-12-08 14:40 ` [PATCH v1 " Sebastian Hesselbarth
2013-12-08 14:40 ` [PATCH v1 1/6] net: mv643xx_eth: properly start/stop phy device Sebastian Hesselbarth
2013-12-11 2:52 ` David Miller
2013-12-11 2:56 ` David Miller
2013-12-11 7:06 ` Sebastian Hesselbarth
2013-12-11 17:28 ` David Miller
2013-12-08 14:40 ` [PATCH v1 2/6] net: phy: marvell: provide genphy suspend/resume Sebastian Hesselbarth
2013-12-08 14:40 ` [PATCH v1 3/6] net: phy: provide phy_resume/phy_suspend helpers Sebastian Hesselbarth
2013-12-08 14:40 ` [PATCH v1 4/6] net: phy: resume/suspend PHYs on attach/detach Sebastian Hesselbarth
2013-12-08 14:40 ` [PATCH v1 5/6] net: phy: suspend unused PHYs on mdio_bus in late_initcall Sebastian Hesselbarth
2013-12-08 14:40 ` [PATCH v1 6/6] net: phy: suspend phydev when going to HALTED Sebastian Hesselbarth
2013-12-13 9:20 ` [PATCH v2 0/5] net: phy: Ethernet PHY powerdown optimization Sebastian Hesselbarth
2013-12-17 19:43 ` David Miller
2014-02-04 19:38 ` Sebastian Hesselbarth
2014-02-04 22:51 ` Florian Fainelli
2014-02-06 16:57 ` Ezequiel Garcia [this message]
2013-12-13 9:20 ` [PATCH v2 1/5] net: mv643xx_eth: properly start/stop phy device Sebastian Hesselbarth
2013-12-13 9:20 ` [PATCH v2 2/5] net: phy: marvell: provide genphy suspend/resume Sebastian Hesselbarth
2013-12-13 9:20 ` [PATCH v2 3/5] net: phy: provide phy_resume/phy_suspend helpers Sebastian Hesselbarth
2013-12-13 9:20 ` [PATCH v2 4/5] net: phy: resume/suspend PHYs on attach/detach Sebastian Hesselbarth
2013-12-13 9:20 ` [PATCH v2 5/5] net: phy: suspend phydev when going to HALTED Sebastian Hesselbarth
2013-12-04 15:44 ` [PATCH RFCv2 1/6] net: mv643xx_eth: properly start/stop phy device Sebastian Hesselbarth
2013-12-04 15:44 ` [PATCH RFCv2 2/6] net: phy: marvell: provide genphy suspend/resume Sebastian Hesselbarth
2013-12-04 15:44 ` [PATCH RFCv2 3/6] net: phy: provide phy_resume/phy_suspend helpers Sebastian Hesselbarth
2013-12-06 0:08 ` Florian Fainelli
2013-12-04 15:44 ` [PATCH RFCv2 4/6] net: phy: resume/suspend PHYs on attach/detach Sebastian Hesselbarth
2013-12-04 15:44 ` [PATCH RFCv2 5/6] net: phy: suspend unused PHYs on mdio_bus in late_initcall Sebastian Hesselbarth
2013-12-04 21:05 ` Sergei Shtylyov
2013-12-06 0:02 ` Florian Fainelli
2013-12-04 15:44 ` [PATCH RFCv2 6/6] net: phy: suspend phydev when going to HALTED Sebastian Hesselbarth
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