...
yes I've just noticed Russell's patch mentioning mvneta,
and found the phylink patches to mvneta in net-next (until then I'd
been reading the vanilla, where they haven't landed yet).
https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git/tre
On 21 Mar 2018 at 11:47, Andrew Lunn , net...@vger.ker wrote:
> Another question is, how to write the driver's initialization
> sequence, for it to correctly decide if the SFP is SERDES or SGMII or
> what. I could just follow the config obtained from the i210 EEPROM.
> Alternatively, or somehow
Just another follow-up:
With specs on SFP MSA, DDM/DMI and MII in hand, I have determined:
0x50 (a.k.a. 0xA0 in SFP MSA spec) = the module's SPD "EEPROM"
0x51 (a.k.a. 0xA2 in SFP MSA spec) = diagnostics (DMI/DDM)
0x56 = MII management access over i2C
Using eeprog (reading each offset twice to
On 20 Mar 2018 at 13:09, Andrew Lunn wrote:
> > i2cdetect has found three i2c slaves (identical layout in both SFP's)
> > at addresses 0x50, 0x51 and 0x56.
> > What are they? EEPROM, DDM and "MDIO over i2c" ?
> > The SFP's likely lack a proper SFP MSA data structure.
>
> 0x50 and 0x51 are EEPROM
I've taken a look inside the two SFP's.
http://support.fccps.cz/download/adv/frr/ptp/inside_sfps.zip
The uglier, bigger and likely older model (my SFP#2) contains two
PCB's sandwiched, and the key chips are inside the sandwich.
Thus, the photoes don't show much.
The sexier SFP#1 = the one with
> > > Right now I've modded igb_init_i2c() to engage the bit-banging
> > > i2c driver for the i210 too
> >
> > I don't think that will work. The datasheet for the i210 talks about
> > two registers for I2C/MDIO which are not bit-banging. Only the i350
> > uses bit-banging.
> >
> From the i210
On 17 Mar 2018 at 15:50, Andrew Lunn wrote:
> On Sat, Mar 17, 2018 at 08:39:00AM +0100, Frantisek Rysanek wrote:
> > On 16 Mar 2018 at 22:02, Andrew Lunn wrote:
> > >
> > > Does ethtool -m show anything useful?
> > >
> >
> > Not much. "uns
On 16 Mar 2018 at 22:02, Andrew Lunn wrote:
>
> Does ethtool -m show anything useful?
>
Not much. "unsupported".
Probably the ioctl() is not implemented or something, I haven't
investigated. Maybe I should.
Right now I've modded igb_init_i2c() to engage the bit-banging
i2c driver for the i210
On 16 Mar 2018 at 19:42, Andrew Lunn wrote:
> Hi Frantisek
>
> This seems a bit odd. The SFP cage only has i2c, not MDIO. It is
> possible to carry MDIO over i2c, which is what is done when the SFP
> module is copper, not fibre. But you are doing 100Base-FX, so fibre.
>
> The BCM5461 is a copper
Dear polite inhabitants of the "netdev" mailing list,
this is for a skunkworks project at the fringe of my job...
More of a DIY hobby thing :-) I'm tinkering and having fun.
The wizards from linux-ptp have taught me how to use the i210 for
precise timestamping, which works fine at all copper
10 matches
Mail list logo
