On Wed, Nov 14, 2018 at 01:39:29PM +0530, Kishon Vijay Abraham I wrote: > Hi, > > On 12/11/18 5:59 PM, Russell King - ARM Linux wrote: > > Hi, > > > > This series adds support for dynamically switching between 1Gbps > > and 2.5Gbps networking for the Marvell Armada 38x SoCs, tested on > > Armada 388 on the Clearfog platform. > > > > This is necessary to be able to connect (eg) a Clearfog platform > > with a Macchiatobin platform via the SFP sockets, as Clearfog > > currently only supports 1Gbps networking via the SFP socket and > > Macchiatobin defaults to 2.5Gbps when using Fiberchannel SFPs. > > > > In order to allow dynamic switching, we need to implement a common > > phy driver to switch the ethernet serdes lane speed - 2.5Gbps is > > just 1Gbps up-clocked by 2.5x. We implement a simple comphy > > driver to achieve this, which only supports networking. > > > > With this, we are able to support both Fiberchannel SFPs operating > > at 2.5Gbps or 1Gbps, and 1G ethernet SFPs plugged into the Clearfog > > platform, dynamically selecting according to the SFPs abilities. > > > > I'm aware of the proposed changes to the PHY layer, changing > > phy_set_mode() to take the ethernet phy interface type, hence why > > this is RFC - there's also the question about how this will be > > merged. This series is currently based on 4.20-rc1, but will > > likely need to be rebased when the PHY layer changes hit. > > For this case, I'd prefer the phy_set_mode series and the phy and net changes > here (after rebasing) go via linux-phy tree. Please let me know when they've hit, thanks. -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up According to speedtest.net: 11.9Mbps down 500kbps up
