I am connecting via I2C an external GPIO expender (sx1509), I am using the mangoH red
the driver fails to register GPIO:
dmesg | grep sx
[ 0.396522] gpiochip_add: GPIOs 2000…2015 (sx1509q) failed to register
[ 0.396557] sx150x: probe of 4-003e failed with error -22
as I understand it this is due to specific kernel implementation of Sierra
if I do not require access to the GPIO (not any of them including the “native” ones) via Legato, but userspace standard access suffice, how can I enable the sx1509q to properlly create the sysfs entries and be available via userspace ?