Which kernel are you using? I'm on 3.14.23-ti-r32 and all serial ports are available under /dev/ right after a fresh flash. But I still needed to rebuild DTBs to get them working. Btw, have you tried this: http://beaglebone.cameon.net/home/serial-ports-uart
On Saturday, November 29, 2014 5:22:44 AM UTC+7, Steve G wrote: > > Thanks that got me a lot further along. > > The problem I have now is the serial ports I believe I enabled didn't > appear in the /dev directory. > > What I did was uncomment the lines like the following in > am335x-boneblack.dts, recompiled and installed: > > #include "am335x-bone-ttyO1.dtsi" > > I have /dev/ttyO0, ttyS1, ttyS2 and ttyS3 but I was expecting more ttyO* > devices. > > > On Friday, November 28, 2014 10:34:22 AM UTC-5, Mostafa Jafarzadeh wrote: >> >> 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. 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