Hi All,
I am playing around with the capabilities of the camkes-arm-vm project pn the Tegra TK1 and and wondering if someone else has come across this issue. It looks like GPIO functionality is not available in the buildroot.
I can confirm the GPIO source is present and is being built:
camkes-arm-vm/libs/libplatsupport/rc/plat/tk1/gpio.c camkes-arm-vm/libs/libplatsupport/plat_include/tk1/platsupport/plat/gpio.h
[CC] src/plat/tk1/gpio.o
The expected sysfs support is not present and looking and the relevant dmesg:
# dmesg | grep gpio
[ 0.057543] gpiochip_add: GPIOs 0..255 (tegra-gpio) failed to register [ 1.485061] input: gpio-keys as /devices/soc0/gpio-keys/input/input0
Any thoughts on what could be causing GPIO to the failing to register?
Steven