On Wed 05 Sep 2018 19:42:18 NZST +1200, Alexander Graf wrote: > You need to first make sure the pin is muxed properly as GPIO and not > associated with a special function: > > /sys/kernel/debug/pinctrl/3f200000.gpio/pinmux-pins > > Once that's clear, you can use the GPIO export to actually access the > GPIO function.
Ahh, how obvious... ;-) Thanks! OK, makes sense. grep gpio4 pinmux-pins says pin 4 (gpio4): (MUX UNCLAIMED) (GPIO UNCLAIMED) and I guess it ought to not say "MUX UNCLAIMED". But I can't find how to do that. All online instructions go straight to exporting the pin (assuming a base of 0...). Appending [all] gpio=4=op,dh gpio=462=op,dh to /boot/efi/extraconfig.txt and rebooting makes no difference. I'm stuck again :-( Thanks, Volker -- Volker Kuhlmann http://volker.top.geek.nz/ Please do not CC list postings to me. -- To unsubscribe, e-mail: opensuse-arm+unsubscr...@opensuse.org To contact the owner, e-mail: opensuse-arm+ow...@opensuse.org
