Hi Jonatan, On Thu, Feb 18, 2016 at 12:08 PM, Jonatan Magnusson <jonatan@xxxxxxxxxxx> wrote: > > Hi again, > >>> >>> I already have earlyprintk enabled: >>> >>> CONFIG_DEBUG_LL=y >>> CONFIG_DEBUG_AM33XXUART1=y >>> CONFIG_EARLY_PRINTK=y >> Try to add earlyprintk to kernel commandline (look at >> Documentation/kernel-parameters.txt) > > That did it! I thought earlyprintk was enabled by default if it was included in the kernel. Now I get console output, up until the point where earlyprintk is to be replaced with the normal console (as far as I understand). > > These are now the last few lines before it goes silent: > > [ 0.894608] omap_voltage_late_init: Voltage driver support not added > [ 0.901653] ThumbEE CPU extension supported. > [ 0.906201] Registering SWP/SWPB emulation handler > [ 0.912028] bootconsole [earlycon0] disabled I have similar problem some time ago when converting 3.9 to 4.1 kernel. am33xx pinmux root node was changes and devicetree from 3.9 kernel cannot boot with 4.1 kernel. Can you please paste snippet of yout DT which is related to pinmux? Or check how it's done e.g. for beaglebone (there is overload node &am335x_pinmux whre you put you custom muxing). Hope this helps. > > Earlier in the log I noted some problem with the UART which I guess may be the problem: > > [ 0.617639] omap_uart 44e09000.serial: could not find pctldev for node /ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_uart0, deferring probe > [ 0.631182] omap_uart 48022000.serial: could not find pctldev for node /ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_uart1_pins, deferring probe > > Seems lika a device tree problem to me…? I’m using the device tree of a very similar, but not exactly the same base board as the on that I use. The core module including the CPU are exactly the same. So I thought at least UART should not be a problem. And ideas? > > Btw, here is the first part of the log in case it makes any difference: > > ommandline: consoleblank=0 console=ttyO0,115200n8 earlyprintk=serial,ttyO0,115200 root=/dev/mmcblk0p2 rootwait rw > [ 0.000000] Booting Linux on physical CPU 0x0 > [ 0.000000] Linux version 4.4.0-yocto-standard (jonatan@babbage) (gcc version 4.9.2 (GCC) ) #1 Thu Feb 18 10:54:44 CET 2016 > [ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c5387d > [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache > [ 0.000000] Machine model: Phytec AM335x phyBOARD-WEGA > [ 0.000000] bootconsole [earlycon0] enabled > [ 0.000000] Memory policy: Data cache writeback > [ 0.000000] CPU: All CPU(s) started in SVC mode. > [ 0.000000] AM335X ES2.1 (sgx neon ) > [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 129536 > [ 0.000000] Kernel command line: consoleblank=0 console=ttyO0,115200n8 earlyprintk=serial,ttyO0,115200 root=/dev/mmcblk0p2 rootwait rw > [ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes) > [ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes) > [ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes) > [ 0.000000] Memory: 508680K/522240K available (6047K kernel code, 422K rwdata, 1844K rodata, 312K init, 164K bss, 13560K reserved, 0K cma-reserved, 0K highmem) > > > Regards, > Jonatan Magnusson > BR, marek -- as simple and primitive as possible ------------------------------------------------- Marek Belisko - OPEN-NANDRA Freelance Developer Ruska Nova Ves 219 | Presov, 08005 Slovak Republic Tel: +421 915 052 184 skype: marekwhite twitter: #opennandra web: http://open-nandra.com -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
