Which lcd? For spidev please read:
http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#U-Boot_Override_external_capes On May 9, 2017 12:16 PM, "Gaurav S" <[email protected]> wrote: Hello All, With LCD, it seems like SPI is behaving awkwardly. I have two beagle bone boards one with LCD plugged in (SYS1) and the other stand alone beagle bone (SYS2), both running latest debian lxqt 2gb image (may 7 2017). The curious thing over here is that before u-boot spi was working just fine with the LCD. Following are the results from each of the systems: SYS1 (beaglebone + LCD4) debian@beaglebone:~$ uname -a Linux beaglebone 4.4.62-ti-r99 #1 SMP Sat Apr 22 14:21:03 UTC 2017 armv7l GNU/Linux debian@beaglebone:~$ dmesg | grep bone [ 0.000000] Kernel command line: console=ttyO0,115200n8 bone_capemgr.enable_partno=BB-SPIDEV1 bone_capemgr.uboot_capemgr_enabled=1 root=UUID=e4c7e2e7-0fbf-494c-8d84-305d291d2b7a ro rootfstype=ext4 rootwait coherent_pool=1M net.ifnames=0 quiet [ 2.376478] bone_capemgr bone_capemgr: Baseboard: 'A335BNLT,00C0,2516BBBK2265' [ 2.376509] bone_capemgr bone_capemgr: compatible-baseboard=ti,beaglebone-black - #slots=4 [ 2.376544] bone_capemgr bone_capemgr: slot #0: auto loading handled by U-Boot [ 2.376566] bone_capemgr bone_capemgr: slot #1: auto loading handled by U-Boot [ 2.376587] bone_capemgr bone_capemgr: slot #2: auto loading handled by U-Boot [ 2.376629] bone_capemgr bone_capemgr: slot #3: auto loading handled by U-Boot [ 2.376655] bone_capemgr bone_capemgr: enabled_partno PARTNO 'BB-SPIDEV1' VER 'N/A' PR '0' [ 2.376667] bone_capemgr bone_capemgr: slot #4: override [ 2.376681] bone_capemgr bone_capemgr: slot #4: auto loading handled by U-Boot [ 2.377276] bone_capemgr bone_capemgr: initialized OK. [ 6.851318] systemd[1]: Set hostname to <beaglebone>. debian@beaglebone:/dev$ ls sp* ls: cannot access sp*: No such file or directory SYS2 (stand along beagle bone) debian@beaglebone:~$ uname -a Linux beaglebone 4.4.62-ti-r99 #1 SMP Sat Apr 22 14:21:03 UTC 2017 armv7l GNU/Linux debian@beaglebone:~$ dmesg|grep bone [ 0.000000] Kernel command line: console=ttyO0,115200n8 bone_capemgr.enable_partno=BB-SPIDEV1 bone_capemgr.uboot_capemgr_enabled=1 root=UUID=599ccfe6-2803-4ea0-9141-2bb571994e70 ro rootfstype=ext4 rootwait coherent_pool=1M net.ifnames=0 quiet [ 2.445200] bone_capemgr bone_capemgr: Baseboard: 'A335BNLT,00C0,2516BBBK22E8' [ 2.445233] bone_capemgr bone_capemgr: compatible-baseboard=ti,beaglebone-black - #slots=4 [ 2.445270] bone_capemgr bone_capemgr: slot #0: auto loading handled by U-Boot [ 2.445291] bone_capemgr bone_capemgr: slot #1: auto loading handled by U-Boot [ 2.445337] bone_capemgr bone_capemgr: slot #2: auto loading handled by U-Boot [ 2.445359] bone_capemgr bone_capemgr: slot #3: auto loading handled by U-Boot [ 2.445379] bone_capemgr bone_capemgr: enabled_partno PARTNO 'BB-SPIDEV1' VER 'N/A' PR '0' [ 2.445390] bone_capemgr bone_capemgr: slot #4: override [ 2.445403] bone_capemgr bone_capemgr: slot #4: auto loading handled by U-Boot [ 2.446010] bone_capemgr bone_capemgr: initialized OK. [ 17.551299] systemd[1]: Set hostname to <beaglebone>. debian@beaglebone:~$ cd /dev debian@beaglebone:/dev$ ls sp* spidev1.0 spidev1.1 spidev2.0 spidev2.1 Am I missing something regarding how u-boot is supposed to work? Thanks Gaurav -- 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/5852e231-e19e-4b1e-9a4f-3c9acd6656e5%40googlegroups.com <https://groups.google.com/d/msgid/beagleboard/5852e231-e19e-4b1e-9a4f-3c9acd6656e5%40googlegroups.com?utm_medium=email&utm_source=footer> . 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAOCHtYgyDLLXcqW0OrSDRZniuQtnu2i7ijo4aYkNuXd16v-RVQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
