Solidrun ClearFog Base and Huawei MA5671A SFP

Solidrun ClearFog Base and Huawei MA5671A SFP

[Hamza Mahfooz]

Hey, has anyone got the ClearFog (ARMADA 388 SoC) to work with the 
MA5671A? I've to been trying to get the ClearFog to read the MA5671A's 
EEPROM however it always throws the following error:

 > # dmesg | grep sfp
 > [ 4.550651] sfp sfp: Host maximum power 2.0W
 > [ 5.875047] sfp sfp: please wait, module slow to respond
 > [ 61.295045] sfp sfp: failed to read EEPROM: -6

I've tried to increase the retry timeout in `/drivers/net/phy/sfp.c` 
(i.e. T_PROBE_RETRY_SLOW) so far, any suggestions would be appreciated. 
Also, I'm on kernel version 5.9.13.

Re: Fwd: Solidrun ClearFog Base and Huawei MA5671A SFP

[Russell King - ARM Linux admin]

Sorry, this will not work. The MA5671A modules are configured to use
dying gasp on pin 7, and pin 7 is grounded on the Armada 388 Clearfog
platforms, resulting in the module not booting.

I'm sorry, I can't recommend a module; I don't use SFP GPON modules
myself.

On Sat, Dec 26, 2020 at 11:15:18PM +0100, Heiner Kallweit wrote:
> Sounds like something where you may be able to help.
> 
> Heiner
> 
> -------- Forwarded Message --------
> Subject: Solidrun ClearFog Base and Huawei MA5671A SFP
> Date: Sat, 26 Dec 2020 16:41:40 -0500
> From: Hamza Mahfooz <someguy@effective-light.com>
> To: netdev@vger.kernel.org
> 
> Hey, has anyone got the ClearFog (ARMADA 388 SoC) to work with the 
> MA5671A? I've to been trying to get the ClearFog to read the MA5671A's 
> EEPROM however it always throws the following error:
> 
> > # dmesg | grep sfp
> > [ 4.550651] sfp sfp: Host maximum power 2.0W
> > [ 5.875047] sfp sfp: please wait, module slow to respond
> > [ 61.295045] sfp sfp: failed to read EEPROM: -6
> 
> I've tried to increase the retry timeout in `/drivers/net/phy/sfp.c` 
> (i.e. T_PROBE_RETRY_SLOW) so far, any suggestions would be appreciated. 
> Also, I'm on kernel version 5.9.13.
> 
> 
> 

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!

Re: Fwd: Solidrun ClearFog Base and Huawei MA5671A SFP

[Hamza Mahfooz]

Would it not be possible to disable dying gasp (assuming I can access 
the module using some other hardware)?

On Sat, Dec 26, 2020 at 10:27 pm, Russell King - ARM Linux admin 
<linux@armlinux.org.uk> wrote:
> Sorry, this will not work. The MA5671A modules are configured to use
> dying gasp on pin 7, and pin 7 is grounded on the Armada 388 Clearfog
> platforms, resulting in the module not booting.
> 
> I'm sorry, I can't recommend a module; I don't use SFP GPON modules
> myself.
> 
> On Sat, Dec 26, 2020 at 11:15:18PM +0100, Heiner Kallweit wrote:
>>  Sounds like something where you may be able to help.
>> 
>>  Heiner
>> 
>>  -------- Forwarded Message --------
>>  Subject: Solidrun ClearFog Base and Huawei MA5671A SFP
>>  Date: Sat, 26 Dec 2020 16:41:40 -0500
>>  From: Hamza Mahfooz <someguy@effective-light.com>
>>  To: netdev@vger.kernel.org
>> 
>>  Hey, has anyone got the ClearFog (ARMADA 388 SoC) to work with the
>>  MA5671A? I've to been trying to get the ClearFog to read the 
>> MA5671A's
>>  EEPROM however it always throws the following error:
>> 
>>  > # dmesg | grep sfp
>>  > [ 4.550651] sfp sfp: Host maximum power 2.0W
>>  > [ 5.875047] sfp sfp: please wait, module slow to respond
>>  > [ 61.295045] sfp sfp: failed to read EEPROM: -6
>> 
>>  I've tried to increase the retry timeout in `/drivers/net/phy/sfp.c`
>>  (i.e. T_PROBE_RETRY_SLOW) so far, any suggestions would be 
>> appreciated.
>>  Also, I'm on kernel version 5.9.13.
>> 
>> 
>> 
> 
> --
> RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
> FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!