Re: [PATCH net-next] net: phy: phylink: add fallback from SGMII to 1000BaseX

2019-06-07 Thread Russell King - ARM Linux admin
On Fri, Jun 07, 2019 at 12:10:57PM -0600, Robert Hancock wrote: > On 2019-06-02 9:15 a.m., Russell King - ARM Linux admin wrote: > > On Fri, May 31, 2019 at 06:17:51PM -0600, Robert Hancock wrote: > >> Our device is mainly intended for fiber modules, which is why 1000BaseX > >> is being used. The v

Re: [PATCH net-next] net: phy: phylink: add fallback from SGMII to 1000BaseX

2019-06-07 Thread Robert Hancock
On 2019-06-02 9:15 a.m., Russell King - ARM Linux admin wrote: > On Fri, May 31, 2019 at 06:17:51PM -0600, Robert Hancock wrote: >> Our device is mainly intended for fiber modules, which is why 1000BaseX >> is being used. The variant of fiber modules we are using (for example, >> Finisar FCLF8520P2

Re: [PATCH net-next] net: phy: phylink: add fallback from SGMII to 1000BaseX

2019-06-02 Thread Russell King - ARM Linux admin
On Fri, May 31, 2019 at 06:17:51PM -0600, Robert Hancock wrote: > Our device is mainly intended for fiber modules, which is why 1000BaseX > is being used. The variant of fiber modules we are using (for example, > Finisar FCLF8520P2BTL) are set up for 1000BaseX, and seem like they are > kind of a ha

Re: [PATCH net-next] net: phy: phylink: add fallback from SGMII to 1000BaseX

2019-06-01 Thread Sergei Shtylyov
Hello! On 31.05.2019 22:18, Robert Hancock wrote: Some copper SFP modules support both SGMII and 1000BaseX, but some drivers/devices only support the 1000BaseX mode. Currently SGMII mode is always being selected as the desired mode for such modules, and this fails if the controller doesn't supp

Re: [PATCH net-next] net: phy: phylink: add fallback from SGMII to 1000BaseX

2019-05-31 Thread Robert Hancock
On 2019-05-31 2:18 p.m., Russell King - ARM Linux admin wrote: > On Fri, May 31, 2019 at 01:18:04PM -0600, Robert Hancock wrote: >> Some copper SFP modules support both SGMII and 1000BaseX, > > The situation is way worse than that. Some copper SFP modules are > programmed to support SGMII only.

Re: [PATCH net-next] net: phy: phylink: add fallback from SGMII to 1000BaseX

2019-05-31 Thread Russell King - ARM Linux admin
On Fri, May 31, 2019 at 01:18:04PM -0600, Robert Hancock wrote: > Some copper SFP modules support both SGMII and 1000BaseX, The situation is way worse than that. Some copper SFP modules are programmed to support SGMII only. Others are programmed to support 1000baseX only. There is no way to tel