rpi-4.18.y ACT LED broken

[asavah]

ACT LED does not seem to work at all on 4.18.y on RPI 3b+

Self built kernel, bcm2709_defconfig @ 3a1a31d

vcgencmd version
Sep 21 2018 15:48:28
Copyright (c) 2012 Broadcom
version 07f57128b8491ffdefcdfd13f7b4961b3006d9a9 (clean) (release)

The led itself works, when powering the pi or shutting it down it blinks as supposed to.
The sdcard activity however does not produce blinks.

ls /sys/class/leds/ produces empty output.

lsgpio (built from the same tree/branch as the kernel)

lsgpio
GPIO chip: gpiochip0, "pinctrl-bcm2835", 54 GPIO lines
        line  0: unnamed unused
        line  1: unnamed unused
        line  2: unnamed unused
        line  3: unnamed unused
        line  4: unnamed unused
        line  5: unnamed unused
        line  6: unnamed unused
        line  7: unnamed unused
        line  8: unnamed unused
        line  9: unnamed unused
        line 10: unnamed unused
        line 11: unnamed unused
        line 12: unnamed "sysfs" [kernel]
        line 13: unnamed unused
        line 14: unnamed unused
        line 15: unnamed unused
        line 16: unnamed "sysfs" [kernel]
        line 17: unnamed unused
        line 18: unnamed "ir-receiver@12" [kernel active-low]
        line 19: unnamed "sysfs" [kernel]
        line 20: unnamed "sysfs" [kernel]
        line 21: unnamed "sysfs" [kernel]
        line 22: unnamed unused
        line 23: unnamed unused
        line 24: unnamed unused
        line 25: unnamed unused
        line 26: unnamed unused
        line 27: unnamed unused
        line 28: unnamed unused
        line 29: unnamed unused [output]
        line 30: unnamed unused
        line 31: unnamed unused
        line 32: unnamed unused
        line 33: unnamed unused
        line 34: unnamed unused
        line 35: unnamed unused
        line 36: unnamed unused
        line 37: unnamed unused
        line 38: unnamed unused
        line 39: unnamed unused
        line 40: unnamed unused
        line 41: unnamed unused
        line 42: unnamed unused
        line 43: unnamed unused
        line 44: unnamed unused
        line 45: unnamed unused
        line 46: unnamed unused
        line 47: unnamed unused
        line 48: unnamed unused
        line 49: unnamed unused
        line 50: unnamed unused
        line 51: unnamed unused
        line 52: unnamed unused
        line 53: unnamed unused

config.txt

start_x=1
disable_overscan=1
disable_splash=1
core_freq=500
gpu_freq=500
sdram_freq=580
sdram_schmoo=0x02000020
over_voltage_sdram=5
over_voltage=2
gpu_mem=320
dtoverlay=i2c-rtc,ds3231
dtoverlay=gpio-ir
dtparam=watchdog=on
dtparam=random=on
dtparam=audio=on
dtparam=spi=on
dtparam=i2c=on
hdmi_force_hotplug=1
decode_MPG2=snip
decode_WVC1=snip
hdmi_edid_file=1
dtparam=eee=off

[pelwell]

Thanks for reporting this. In rpi-4.18.y we're using the new, upstreamed GPIO expander driver. This has a different "compatible" string, and the .dts files hadn't been updated to match.

A fix has been pushed to rpi-4.18.y.

[asavah]

TYVM, works as expected.