Hi Robert, I actually already disabled most function except EMMC. I probably missed the disable part when I copied my uEnv.txt. Below is the part where all functions are disabled. However, using this uEnv.txt, Pin 66-80 look like still claimed by "4a100000.ethernet" in file /sys/kernel/debug/pinctrl/ 44e10800.pinmux/pinmux-pins. These pins seem conflicting with quite a few GPIO pins on P8. Is it possible to use these GPIO pins on P8 conflicting with Pin 66-80?
###Disable auto loading of virtual capes (emmc/video/wireless/adc) > #disable_uboot_overlay_emmc=1 > disable_uboot_overlay_video=1 > disable_uboot_overlay_audio=1 > disable_uboot_overlay_wireless=1 > disable_uboot_overlay_adc=1 On Tue, Nov 20, 2018 at 11:50 PM Robert Nelson <[email protected]> wrote: > On Tue, Nov 20, 2018 at 7:56 AM Wei Shi <[email protected]> wrote: > > > > I would like to use as many GPIO pins as possible on a Beaglebone black > board. I use the latest 4.14 image. I am not using HDMI, wireless, but I do > need wired Ethernet and EMMC. So I have my uEnv.txt as below: > > > Here's the doc's: > > > https://elinux.org/Beagleboard:BeagleBoneBlack_Debian#U-Boot_Disable_on-board_devices > > To disable hdmi add: > > disable_uboot_overlay_video=1 > > to your /boot/uEnv.txt > > Regards, > > -- > Robert Nelson > https://rcn-ee.com/ > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAMb%3DERSrYqDrw6tP7ZZoR2u9a8PnsNmjUk%3DFxO5wveTL%2B7sChQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
