[Raspbian-devel] Suggestions for a Pi's Ethernet interface LEDs and tracking in /boot/config.txt.

[John W. Kitz]

Stian,

On 2018-06-07 11:04, John W. Kitz wrote:
> Stian,
> 
> Thanks for taking the time to respond.
> 
> On 2018-06-07 00:49, Stian Skjelstad wrote:

>> The ethernet led documentation you found, configures the PHY chip,
>> which has some gpio lines of its own for LEDs.

Looking at SMSC95xx series documentation, were you referring to these 
pins:

Ethernet Full-Duplex Indicator LED - This pin is driven low (LED on) 
when the Ethernet link is operating in full-duplex  mode.

Ethernet Link Activity Indicator LED - This pin is driven low (LED on) 
when a valid link is detected. This pin is pulsed high (LED off) for 80 
mS whenever transmit or receive activity is detected. This pin is then 
driven low again for a minimum of 80 mS, after which time it will repeat 
the process if TX or RX activity is detected. Effectively, LED2 is 
activated solid for a link. When transmit or receive activity is sensed, 
LED2 will function as an activity indicator.

If yes, could you please explain how changes to the configurable items 
eth_led0 and eth_led1 in the Pi's device tree documentation affect or 
relate to these two pins in the SMSC95xx series documentation?

>> Stian

Regards, Jk.