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Ethernet activity led gpio change???

  • It looks like i have a hardware design related problem. After I resolve it, i will check for led trigger issue.. thanks for your reply...

  • @crispyoz I have found the cause of hardware related problem on my custom design board. Ethernet is working now šŸ™‚ it is time to trigger setup for ethernet activity led. šŸ™‚

    I read many article about it. I saw kmod-ledtrig-netdev control structure. but i guess firstly i need to build a led directory symb link in /sys/class/leds/.. when i check i just see, omega2lte:amber:system and omega2lte:blue:wifi as led control symbolic links. So If i find a way to add here a new link for my custom gpio like omega2lte:white:ethernet, then i can try to use ledtrig-netdev.

    Do you know how i can add a led to /sys/class/leds/ directory? Does it have to be done before compiling sources?

  • @optech The files in this directory are typically created by a kernel module that's managing those resources.

  • @crispyoz do you know how i can set that kernel module for custom leds?

  • @optech take a look at the wiki on this topic:


    If you are using a custom board with an additional LED, you may need to update the DTS to support this.

  • @crispyoz It works now!!! I write what i did to help people who need this info for future.. šŸ™‚

    Before compiling, I changed the omega2 dts file (OMEGA2.dtsi) from target/linux/ramips/dts as below:

    leds {
    		compatible = "gpio-leds";
    		system_led: system {
    			gpios = <&gpio1 12 GPIO_ACTIVE_LOW>;
    		eth0_led0: link {
    			label = "omega2p:green:link"; 
    			gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>;
    			default-state = "off"; 
    		eth0_led1: data {
    			label = "omega2p:orange:data"; 
    			gpios = <&gpio0 15 GPIO_ACTIVE_HIGH>;
    			default-state = "off"; 

    After I compile and load the binary, i see "omega2p:green:link omega2p:amber:system omega2p:orange:data" links in /sys/class/leds ..

    Then i configured leds for ethernet using netdev-trigger using luci..

    @crispyoz Thank you for your help.. It was very helpful..šŸ˜Š šŸ‘

    By the way, it was my hardest led blinking work since 15 years šŸ˜Š

  • @optech Congratulations. I used this about 2 years ago to get my leds functional but then ended up using LedChain by @luz as my purpose was slightly different.

    Did they have leds 15 years ago? I'm a bit young to know šŸ™‚

  • @crispyoz I feel elderly now šŸ™ƒ

  • This post is deleted!

  • @optech small victories lead to larger ones.

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