Hi Steve You need to install device tree compiler. I suggest you compile it from source yourself, as there is a patch you need to apply. Here's my instructions from a manual I wrote a while ago:
BBB> git clone git://git.kernel.org/pub/scm/utils/dtc/dtc.git BBB> cd dtc BBB> git reset --hard f8cb5dd94903a5cfa1609695328b8f1d5557367f BBB> wget https://patchwork.kernel.org/patch/1934471/raw/ -O dynamic-symbols.patch BBB> git apply dynamic-symbols.patch BBB> make BBB> sudo cp dtc /usr/local/bin On Friday, November 28, 2014 9:04:48 PM UTC+7, Steve G wrote: > > I'm trying to do this on my BBB with Debian but I'm getting a compile > error: > > debian@bbblack:~/dtb-rebuilder$ make > DTC src/arm/am335x-base0033.dtb > /bin/sh: 1: dtc: not found > make[1]: *** [src/arm/am335x-base0033.dtb] Error 127 > make: *** [all_arm] Error 2 > debian@bbblack:~/dtb-rebuilder$ > > I followed the custom dtb directions in the link. > > On Friday, November 14, 2014 4:12:22 PM UTC-5, RobertCNelson wrote: >> >> http://elinux.org/Beagleboard:Capes_3.8_to_3.14#Custom_dtb >> >> The pins aren't mixed to the peripheral. >> >> Example enable this >> >> >> https://github.com/RobertCNelson/dtb-rebuilder/blob/3.14-ti/src/arm/am335x-boneblack.dts#L78 >> >> And run... >> >> make ; sudo make install ; sudo reboot >> On Nov 14, 2014 2:46 PM, <m.jafa...@gmail.com> wrote: >> >>> I've been playing around with my BBB for about a month now and got >>> everything up and running. Today I spent the whole day to get UART loopback >>> to work on Debian. It simply doesn't work! Tried with Qt (cross-compiled >>> and all samples are working), QSerialPortInfo::availablePorts().count() >>> returns zero. At first I thought it can be a QtSerialPort issue. So I did a >>> loop back on UART1 and UART2 (P9.21 connected to P9.26 and P9.22 connected >>> to P9.24). Then opened "minicom -b 9600 -D /dev/ttyO1" and "minicom -b 9600 >>> -D /dev/ttyO2" in two separate terminals. I expected to see whatever I type >>> in each one of the terminals on the other one. But that wasn't the case. >>> Nothing happens! Any idea what's wrong? >>> >>> Here's some info about my setup: >>> >>> *Fresh install of >>> "BBB-eMMC-flasher-debian-7.7-console-armhf-2014-10-29-2gb.img.xz". Didn't >>> modify anything. * >>> >>> *"uname -a": * >>> Linux arm 3.14.22-ti-r31 #1 SMP PREEMPT Fri Oct 24 20:50:46 UTC 2014 >>> armv7l GNU/Linux >>> >>> *"dmesg | grep ttyO":* >>> [ 0.000000] Kernel command line: console=ttyO0,115200n8 >>> root=UUID=a52b5fd5-953d-458c-94d0-0cf2ff1c7115 ro rootfstype=ext4 rootwait >>> fixrtc quiet init=/lib/systemd/systemd >>> [ 2.799292] 44e09000.serial: ttyO0 at MMIO 0x44e09000 (irq = 88, >>> base_baud = 3000000) is a OMAP UART0 >>> [ 2.800424] console [ttyO0] enabled >>> [ 2.802247] 48022000.serial: ttyO1 at MMIO 0x48022000 (irq = 89, >>> base_baud = 3000000) is a OMAP UART1 >>> [ 2.803710] 48024000.serial: ttyO2 at MMIO 0x48024000 (irq = 90, >>> base_baud = 3000000) is a OMAP UART2 >>> [ 2.805198] 481a8000.serial: ttyO4 at MMIO 0x481a8000 (irq = 61, >>> base_baud = 3000000) is a OMAP UART4 >>> [ 2.806622] 481aa000.serial: ttyO5 at MMIO 0x481aa000 (irq = 62, >>> base_baud = 3000000) is a OMAP UART5 >>> >>> *"ls -al /dev/ttyO*":* >>> crw-rw---- 1 root tty 249, 0 Oct 29 19:06 /dev/ttyO0 >>> crw-rw---T 1 root dialout 249, 1 Nov 14 17:41 /dev/ttyO1 >>> crw-rw---T 1 root dialout 249, 2 Nov 14 17:41 /dev/ttyO2 >>> crw-rw---T 1 root dialout 249, 4 Jan 1 2000 /dev/ttyO4 >>> crw-rw---T 1 root dialout 249, 5 Jan 1 2000 /dev/ttyO5 >>> >>> >>> I appreciate anything that might help! :) >>> >>> -- >>> 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 beagleboard...@googlegroups.com. >>> For more options, visit https://groups.google.com/d/optout. >>> >> -- 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 beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
