It's not a kernel driver, I believe it's the processor default mode. You
can check the processor datasheet:
http://www.ti.com/product/AM3359/datasheet/terminal_description?search=pin,default#sprs717824
If you want to change it earlier than linux, you need to set the pin in
uboot (as far as I can understand). You can check the list because I
know that I have already read something about change default IO in BBB.
Or something about u-boot and gpio, like this:
http://www.crashcourse.ca/wiki/index.php/U-Boot_on_the_BBB
Hopefully, this can help a little....
Miguel Aveiro
On 25-11-2014 22:28, [email protected] wrote:
thanks, unfortunately didn't work for me.
On Wednesday, 26 November 2014 10:02:27 UTC+11, Peter Gregory wrote:
I had the same issue driving RBG Leds.
They were starting turned on full force since the PWM was driving
high on boot.
Changing the polarity worked for me.
Is it possible the order of overlays is undoing your changes to
bone_pwm_P8_13?
Instead of:
cape_enable=capemgr.enable_partno=BB-UART1,SPI-4SS,bone_eqep2b,bone_pwm_P8_13,am33xx_pwm
Maybe try it with your modifications being the last overlay to load:
cape_enable=capemgr.enable_partno=BB-UART1,SPI-4SS,bone_eqep2b,am33xx_pwm,bone_pwm_P8_13
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