Hi Russell, On 14/11/18 4:26 PM, Russell King - ARM Linux wrote: > 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. I've merged the phy_set_mode series to linux-phy -next. Thanks Kishon >
