So, turns out that the DTBO being compiled was, for some unknown reason, 
wrong. I copied the files from /beaglebot/tree/master/encoders/dts into 
/beagleboard/bb.org-overlays/src/arm/ and ran make clean | make |  make 
install. This generated a file with the -00A0 sufix and another without. 
The one without the sufix was somehow messed up and was being loaded 
instead. I am terrible with these overlays and device trees thingy :/

Thanks anyway. And I hope this can, somehow, help someone.
Paulo Sherring.



Em quinta-feira, 12 de maio de 2016 23:17:41 UTC-3, Paulo Sherring escreveu:
>
> Hi all! I am trying to use the eQEP device driver, found here:
> https://github.com/Teknoman117/beaglebot
>
> So, I could get the module loaded by echoing the device tree to cape 
> manager. After disabling eMMC and HDMI, all 0-2 modules loaded OK.
> I hooked up my encoder, which uses open NPN to the board, powering it up 
> from the 5V onboard.
> Since the output is open collector NPN, i needed to use pullup. So, i 
> edited the dts file as follows:
> (For eQEP1)
> 0x0D8 0x32  /* P8_31 = GPIO0_10 = EQEP1_index, MODE2 */
> 0x0DC 0x32  /* P8_32 = GPIO0_11 = EQEP1_strobe, MODE2 */
> 0x0D4 0x32  /* P8_33 = GPIO0_9 = EQEP1B_in, MODE2 */
> 0x0D0 0x32  /* P8_35 = GPIO0_8 = EQEP1A_in, MODE2 */
>
> After compiling, installing and echoing it again to capemgr, the entry in 
> sysfs is created as expected, but, when i read pinmux config, I read back 
> 0X2A. After overwriting it with devmem, I also get again 0X2A. Can anyone 
> give me any direction?
>
> My setup:
> BeagleBone Black Element14
> KernVer: 4.4.0-bone-rt-r3.1
> uEnv:
> dtb=am335x-boneblack-overlay.dtb
>
>
> Thanks in advance!
> Paulo Sherring.
>
>

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