Hello, http://elinux.org/4D_4.3_LCD_CAPE
Thanks for the reference Robert, that solved the issue. Apparently I should not be mixing uboot with "bone_capemgr.enable". I am not sure why did the /dev/spidev* work on the system without the LCD. Thanks again, gaurav On Tuesday, May 9, 2017 at 12:38:50 PM UTC-5, RobertCNelson wrote: > > 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" <gaurav....@gmail.com <javascript:>> > 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 beagleboard...@googlegroups.com <javascript:>. > 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 beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/c0363018-6862-4b01-a933-1cdd2521c5c8%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
