LibreSDR - LED support

[sq6emm]

It seems that we dont have any LED communication of LibreSDR with outside world.

I was able to identify 4 LEDs on schematic and the real PCB:

https://github.com/day0wl/libresdr-fw/blob/main/zynqsdr_rev5.pdf

D1 - R11 / DONE_0 (I guess this is our activity/flashing LED)
D2 - PS_POR# - PG_ALL / C7 - PS_POR_B_500 (seems like power LED on 3.3V)
D10 - PL_LED0 - J20 / IO_L17P_T2_AD5P_35 (I guess this is 10mhz or pps ref)
D13 - PL_LED1 - H20 / IO_L17N_T2_AD5N_35 (I guess this is 10mhz or pps ref)
ACTLED0 - ethernet LED
ACTLED1 - ethernet LED

The only reference to LEDs in the code I was able to find in:
board/libre/dts/zynq-libre.dts

                led0 {
                        label = "led0:green";
                        gpios = <&gpio0 15 0>;
                        linux,default-trigger = "heartbeat";
                };

Unfortunatelly I am unable to map that anyhow to schematics... I guess its done in fpga?

Maybe it would be worth to map D1 diode to have that activity?

[F5OEO]

Until I misunderstand :
DONE_0(R11) is wire to D1 : it should be 1 as soon as the fpga is running. It could not be programmed by PS, so it could not be an activity led.
D2 is power led : fixed
So only D10 and D13 could be use to indicate some status.

[sq6emm]

Seems you are right:)
Only the D10/D13 so 10MHz/PPS diodes can be used to indicate status. But then most probably they should be only used for their designed role... So led0 should be removed from the code?

[sq6emm]

LibreSDR from OpenSourceSDR on their default firmware after booting from flash is blinking with PPS LED (D13)