Using a clean install of Armbian 22.02.1 with Linux 5.15.25-sunxi on a NanoPi NEO the green & blue LEDs no longer work. Previously they have worked with both Armbian and DietPi.
# uname -a
Linux nanopineo 5.15.25-sunxi #22.02.1 SMP Sun Feb 27 09:23:25 UTC 2022 armv7l GNU/Linux
# cat /sys/devices/platform/leds/leds/nanopi:green:status/trigger
cat: '/sys/devices/platform/leds/leds/nanopi:green:status/trigger': No such file or directory
# cat /sys/class/leds/led{0,1}/trigger
cat: /sys/class/leds/led0/trigger: No such file or directory
cat: /sys/class/leds/led1/trigger: No such file or directory
# ls -lha /sys/class/leds/
total 0
drwxr-xr-x 2 root root 0 Dec 31 1969 .
drwxr-xr-x 62 root root 0 Dec 31 1969 ..
# grep led /var/log/syslog
Feb 27 22:38:48 nanopineo kernel: [ 2.532268] leds-gpio: probe of leds failed with error -16
Feb 27 22:38:48 nanopineo kernel: [ 2.534730] ledtrig-cpu: registered to indicate activity on CPUs
# locate leds
/usr/bin/setleds
/usr/include/linux/uleds.h
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/input/input-leds.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/flash
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/led-class-flash.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-an30259a.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-axp20x.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-bcm6328.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-bcm6358.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-bd2802.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-cpcap.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-cr0014114.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-dac124s085.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-el15203000.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-is31fl319x.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-is31fl32xx.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-lm3530.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-lm3532.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-lm355x.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-lm3642.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-lm3692x.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-lm3697.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-lp3944.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-lp3952.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-lp5521.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-lp5523.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-lp5562.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-lp55xx-common.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-lp8501.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-lp8860.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-lt3593.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-max77650.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-mlxreg.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-pca9532.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-pca955x.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-pca963x.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-pwm.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-regulator.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-spi-byte.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-tca6507.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-ti-lmu-common.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/leds-tlc591xx.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/trigger
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/flash/leds-as3645a.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/flash/leds-ktd2692.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/flash/leds-lm3601x.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/flash/leds-rt4505.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/flash/leds-rt8515.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/trigger/ledtrig-audio.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/trigger/ledtrig-backlight.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/trigger/ledtrig-camera.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/trigger/ledtrig-gpio.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/trigger/ledtrig-netdev.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/trigger/ledtrig-oneshot.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/trigger/ledtrig-pattern.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/trigger/ledtrig-timer.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/trigger/ledtrig-transient.ko.xz
/usr/lib/modules/5.15.25-sunxi/kernel/drivers/leds/trigger/ledtrig-tty.ko.xz
/usr/share/X11/xkb/compat/ledscroll
/usr/share/man/man1/setleds.1.gz
# ls -l /proc/device-tree/leds
total 0
-r--r--r-- 1 root root 10 Apr 10 10:35 compatible
drwxr-xr-x 2 root root 0 Apr 10 10:30 led-0
drwxr-xr-x 2 root root 0 Apr 10 10:30 led-1
-r--r--r-- 1 root root 5 Apr 10 10:35 name
-r--r--r-- 1 root root 8 Apr 10 10:35 pinctrl-0
-r--r--r-- 1 root root 8 Apr 10 10:35 pinctrl-names
drwxr-xr-x 2 root root 0 Apr 10 10:30 pwr
drwxr-xr-x 2 root root 0 Apr 10 10:30 status
# ls -l /proc/device-tree/leds/led-0
total 0
-r--r--r-- 1 root root 16 Apr 10 10:36 gpios
-r--r--r-- 1 root root 19 Apr 10 10:36 label
-r--r--r-- 1 root root 10 Apr 10 10:36 linux,default-trigger
-r--r--r-- 1 root root 6 Apr 10 10:36 name
# ls -l /proc/device-tree/leds/led-1
total 0
-r--r--r-- 1 root root 3 Apr 10 10:36 default-state
-r--r--r-- 1 root root 16 Apr 10 10:36 gpios
-r--r--r-- 1 root root 17 Apr 10 10:36 label
-r--r--r-- 1 root root 6 Apr 10 10:36 name
# ls -l /proc/device-tree/leds/pwr
total 0
-r--r--r-- 1 root root 16 Apr 10 10:37 gpios
-r--r--r-- 1 root root 15 Apr 10 10:37 label
-r--r--r-- 1 root root 11 Apr 10 10:37 linux,default-trigger
-r--r--r-- 1 root root 4 Apr 10 10:37 name
# ls -l /proc/device-tree/leds/status
total 0
-r--r--r-- 1 root root 16 Apr 10 10:37 gpios
-r--r--r-- 1 root root 20 Apr 10 10:37 label
-r--r--r-- 1 root root 10 Apr 10 10:37 linux,default-trigger
-r--r--r-- 1 root root 7 Apr 10 10:37 name
# cat /proc/device-tree/leds/led-0/gpios
<nothing>
# cat /proc/device-tree/leds/led-0/label
nanopi:blue:status
# cat /proc/device-tree/leds/led-0/linux,default-trigger
heartbeat
# cat /proc/device-tree/leds/led-0/name
led-0
# cat /proc/device-tree/leds/led-1/default-state
on
# cat /proc/device-tree/leds/led-1/gpios
9
# cat /proc/device-tree/leds/led-1/label
nanopi:green:pwr
# cat /proc/device-tree/leds/led-1/name
led-1
# cat /proc/device-tree/leds/pwr/gpios
9
# cat /proc/device-tree/leds/pwr/label
nanopi:red:pwr
# cat /proc/device-tree/leds/pwr/linux,default-trigger
default-on
# cat /proc/device-tree/leds/pwr/name
pwr
# cat /proc/device-tree/leds/status/gpios
<nothing>
# cat /proc/device-tree/leds/status/label
nanopi:green:status
# cat /proc/device-tree/leds/status/linux,default-trigger
heartbeat
# cat /proc/device-tree/leds/status/name
status
In the armbian-config .dts editor I found that led-0 and led-1 are reversed from what I found above. led-0 is blue and led-1 is green. I don't know if that's a show stopper or not.
--- current.dts > edit not saved, kept original ---
1463 leds {
1464 compatible = "gpio-leds";
1465
1466 led-0 {
1467 label = "nanopi:green:pwr";
1468 gpios = <0x3f 0x00 0x0a 0x00>;
1469 default-state = "on";
1470 };
1471
1472 led-1 {
1473 label = "nanopi:blue:status";
1474 gpios = <0x0e 0x00 0x0a 0x00>;
1475 linux,default-trigger = "heartbeat";
1476 };
1477 };
The config-5.15.25-sunxi file shows;
#
# LED Triggers
#
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_TIMER=m
CONFIG_LEDS_TRIGGER_ONESHOT=m
CONFIG_LEDS_TRIGGER_DISK=y
CONFIG_LEDS_TRIGGER_MTD=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
CONFIG_LEDS_TRIGGER_BACKLIGHT=m
CONFIG_LEDS_TRIGGER_CPU=y
CONFIG_LEDS_TRIGGER_ACTIVITY=y
CONFIG_LEDS_TRIGGER_GPIO=m
CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
I booted with a previous version of DietPi and the LEDs were working as before. It looks like everything needed is there and the correct default trigger is shown etc,
I'm not sure where to look next.
