I think i get it. I will try this first thing in the morning. Thank you.
On September 10, 2015 7:15:57 PM Charles Steinkuehler
<char...@steinkuehler.net> wrote:
I mean you have pinmux settings, but you're not using the
gpio-of-helper driver to actually export anything, which it what it
was written for. There is a difference between the *PINMUX* is setup
for input and the *GPIO PIN* is setup as an input.
Try adding some actual GPIO entries like these:
https://github.com/beagleboard/devicetree-source/blob/master/arch/arm/boot/dts/BB-GPIOHELP-00A0.dts#L48-L62
On 9/10/2015 11:43 AM, Bremenpl wrote:
Im.not sure I understand. I am setting the pins in the dts file i
pasted. Wrting 0x37 to them to set them as inputs with pullups. I then
compile a dtbo, load then load the dtbo. It gets loaded. I check the
pins and they are not 0x37. Could you explain again what did you mean
exacly? I wanted to simply init the pin with device tree overlay and
then manage it with sysfs.
On September 10, 2015 3:34:44 PM Charles Steinkuehler
<char...@steinkuehler.net> wrote:
On 9/9/2015 11:41 AM, bremenpl wrote:
Hello there,
I just got back to my BeagleBone Black and i have no idea why but I
just
cannot change a pin configuration using overlay nor through export.
This is
what I am trying to do:
I want to set P8_29 and P8_31 Pins to inputs with a pullup (0x37).
here is
my overlay:
<snip overlay stuff>
Then I check the pins and they remain as they were in default:
root@beaglebone:~# cat $PINS | grep "pin 57"
pin 57 (44e108e4) 00000027 pinctrl-single
root@beaglebone:~# cat $PINS | grep "pin 54"
pin 54 (44e108d8) 0000002f pinctrl-single
Did I forget something? I really cant think of anything. I would
really
apreciate all help here!
Well, since you're using gpio-of-helper (designed to allow export of
GPIO pins via the device tree instead of using sysfs), but *NOT*
actually defining any GPIO pins, I'm not sure the gpio-of-helper
driver is applying your pinmux settings.
Try adding the GPIO pins you want to the gpio_helper stanza in
fragment 1 and configure them as inputs.
--
Charles Steinkuehler
char...@steinkuehler.net
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