Fwd: Question abount VSOL/CarlitoxxPro SFP Patch on Marvell Armada (MCBIN DS)

[Giammarco lynx]

Hi Russell,

here is the output of devmem without sfp-bus.c quirk:

root at mcbin:~# devmem 0xf4133e10
0x0000600A
root at mcbin:~#

Thanks

Il giorno mar 8 mar 2022 alle ore 12:15 Russell King (Oracle)
<linux at armlinux.org.uk> ha scritto:
>
> On Tue, Mar 08, 2022 at 11:08:34AM +0100, Giammarco lynx wrote:
> > Hi Russell,
> >
> > i've tried to change quirks on the sfp-bus.c, but without success:
>
> Thanks for trying.
>
> > Please note that this stick should supporto HiSGMII (2500base-x), but
> > currently the firmware on-top seems stuck so link only at 1000base-x
>
> I've seen that with some of the other modules (the alcatel/lucent ones)
> where they won't switch to 2.5G unless they are on the PON network and
> have been configured.
>
> So this brings up a question - if it isn't switching to 2500base-X then
> why doesn't it link when we're in 1000base-X mode. The only other
> possibility I can think of would be SGMII, which will sync, but won't
> complete the negotiation. The only way to know that would be to read
> the GMAC STATUS0 register to see if bit 14 is set (meaning it has
> gained sync) without bit 0 (link up.)
>
> If you have devmem2, boot without the sfp-bus.c patch applied, bring
> eth3 up, and then run:
>
> # devmem2 0xf4133e10
>
> which should dump the status0 register for eth3.
>
> > At the moment we don't have any other solution than put interface UP
> > and then un-plug/plug module again?
>
> At the moment, sadly, yes.
>
> --
> RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
> FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!