From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Mack Subject: Trouble with newer kernels on Gumstix Overo boards Date: Fri, 17 Jun 2011 16:00:06 +0200 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mail-pv0-f174.google.com ([74.125.83.174]:39841 "EHLO mail-pv0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757622Ab1FQOAH convert rfc822-to-8bit (ORCPT ); Fri, 17 Jun 2011 10:00:07 -0400 Received: by pvg12 with SMTP id 12so1839925pvg.19 for ; Fri, 17 Jun 2011 07:00:06 -0700 (PDT) Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Tony Lindgren Cc: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org Hi Tony et al, I'm having problems booting newer kernels on a Gumstix Overo board. I enabled CONFIG_EARLY_PRINTK to see any messages at all, and see a number of warnings first and then lots of garbled binary junk once the UART is set up. This is Linus' current master branch plus your latest fixes from git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6.g= it fixes Uncompressing Linux... done, booting the kernel. [ 0.000000] Linux version 3.0.0-rc3-00209-g64db347-dirty (daniel@jup) (gcc version 4.4.5 (Buildroot 2010.11-git) ) #24 SMP Fri Jun 17 15:42:59 CEST 2011 [ 0.000000] CPU: ARMv7 Processor [411fc083] revision 3 (ARMv7), cr=3D= 10c53c7f [ 0.000000] CPU: VIPT nonaliasing data cache, VIPT nonaliasing instruction cache [ 0.000000] Machine: Gumstix Overo [ 0.000000] Ignoring tag cmdline (using the default kernel command l= ine) [ 0.000000] bootconsole [earlycon0] enabled [ 0.000000] Memory policy: ECC disabled, Data cache writeback [ 0.000000] OMAP3503 ES3.1 (l2cache neon isp ) [ 0.000000] SRAM: Mapped pa 0x40200000 to va 0xfe400000 size: 0x1000= 0 [ 0.000000] On node 0 totalpages: 65536 [ 0.000000] free_area_init_node: node 0, pgdat c065e9e0, node_mem_map c0bb5000 [ 0.000000] Normal zone: 512 pages used for memmap [ 0.000000] Normal zone: 0 pages reserved [ 0.000000] Normal zone: 65024 pages, LIFO batch:15 [ 0.000000] Clocking rate (Crystal/Core/MPU): 26.0/331/500 MHz [ 0.000000] Reprogramming SDRC clock to 331882352 Hz [ 0.000000] PERCPU: Embedded 7 pages/cpu @c0dba000 s5952 r8192 d1452= 8 u32768 [ 0.000000] pcpu-alloc: s5952 r8192 d14528 u32768 alloc=3D8*4096 [ 0.000000] pcpu-alloc: [0] 0 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 65024 [ 0.000000] Kernel command line: debug earlyprintk console=3DttyS2,115200 root=3D/dev/mmcblk0p2 rw rootfstype=3Dext3 rootw= ait [ 0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes) [ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072= bytes) [ 0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 b= ytes) [ 0.000000] Memory: 256MB =3D 256MB total [ 0.000000] Memory: 247860k/247860k available, 14284k reserved, 0K h= ighmem [ 0.000000] Virtual kernel memory layout: [ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB) [ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB) [ 0.000000] DMA : 0xffc00000 - 0xffe00000 ( 2 MB) [ 0.000000] vmalloc : 0xd0800000 - 0xf8000000 ( 632 MB) [ 0.000000] lowmem : 0xc0000000 - 0xd0000000 ( 256 MB) [ 0.000000] modules : 0xbf000000 - 0xc0000000 ( 16 MB) [ 0.000000] .init : 0xc0008000 - 0xc0051000 ( 292 kB) [ 0.000000] .text : 0xc0051000 - 0xc05dd334 (5681 kB) [ 0.000000] .data : 0xc05de000 - 0xc065fe00 ( 520 kB) [ 0.000000] .bss : 0xc065fe24 - 0xc0bb4e68 (5461 kB) [ 0.000000] Hierarchical RCU implementation. [ 0.000000] NR_IRQS:410 [ 0.000000] IRQ: Found an INTC at 0xfa200000 (revision 4.0) with 96 interrupts [ 0.000000] Total of 96 interrupts on 1 active controller [ 0.000000] OMAP clockevent source: GPTIMER1 at 32768 Hz [ 0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 131071999ms [ 0.000000] Console: colour dummy device 80x30 [ 0.000000] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.000000] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.000000] ... MAX_LOCK_DEPTH: 48 [ 0.000000] ... MAX_LOCKDEP_KEYS: 8191 [ 0.000000] ... CLASSHASH_SIZE: 4096 [ 0.000000] ... MAX_LOCKDEP_ENTRIES: 16384 [ 0.000000] ... MAX_LOCKDEP_CHAINS: 32768 [ 0.000000] ... CHAINHASH_SIZE: 16384 [ 0.000000] memory used by lock dependency info: 3695 kB [ 0.000000] per task-struct memory footprint: 1152 bytes [ 0.057312] Calibrating delay loop... 497.82 BogoMIPS (lpj=3D1941504= ) [ 0.096282] pid_max: default: 32768 minimum: 301 [ 0.102081] Security Framework initialized [ 0.106842] Mount-cache hash table entries: 512 [ 0.117034] CPU: Testing write buffer coherency: ok [ 0.126556] Brought up 1 CPUs [ 0.129730] SMP: Total of 1 processors activated (497.82 BogoMIPS). [ 0.154479] omap_hwmod: _populate_mpu_rt_base found no _mpu_rt_va fo= r l4_core [ 0.162017] omap_hwmod: _populate_mpu_rt_base found no _mpu_rt_va fo= r l4_per [ 0.169433] omap_hwmod: _populate_mpu_rt_base found no _mpu_rt_va fo= r l4_wkup [ 0.177429] omap_hwmod: gpt12_fck: missing clockdomain for gpt12_fck= =2E [ 0.200500] omap_hwmod: i2c1: softreset failed (waited 10000 usec) [ 0.221557] omap_hwmod: i2c2: softreset failed (waited 10000 usec) [ 0.242614] omap_hwmod: i2c3: softreset failed (waited 10000 usec) [ 0.249938] omap_hwmod: am35x_otg_hs: cannot be enabled (3) [ 0.261901] print_constraints: dummy: [ 0.267517] NET: Registered protocol family 16 [ 0.273895] GPMC revision 5.0 [ 0.287017] omap_device: omap_gpio.0: new worst case activate latency 0: 91552 [ 0.298126] OMAP GPIO hardware version 2.5 [ 0.304260] OMAP GPIO hardware version 2.5 [ 0.310638] OMAP GPIO hardware version 2.5 [ 0.316986] OMAP GPIO hardware version 2.5 [ 0.323150] OMAP GPIO hardware version 2.5 [ 0.329376] OMAP GPIO hardware version 2.5 [ 0.344146] omap_mux_init: Add partition: #1: core, flags: 0 [ 0.362213] omap_device: omap_uart.0: new worst case activate latency 0: 30517 [ 0.362579] omap_device: omap_uart.0: new worst case deactivate latency 0: 30517 [ 0.381591] Found NAND on CS0 [ 0.384857] Registering NAND on CS0 [ 0.391021] kobject (c06231f0): tried to init an initialized object, something is seriously wrong. [ 0.400482] [] (unwind_backtrace+0x0/0xf4) from [] (kobject_init+0x7c/0x90) [ 0.409637] [] (kobject_init+0x7c/0x90) from [] (device_initialize+0x24/0x94) [ 0.418945] [] (device_initialize+0x24/0x94) from [] (platform_device_register+0x10/0x1c) [ 0.429321] [] (platform_device_register+0x10/0x1c) from [] (overo_init+0x84/0x238) [ 0.439178] [] (overo_init+0x84/0x238) from [] (customize_machine+0x1c/0x28) [ 0.448394] [] (customize_machine+0x1c/0x28) from [] (do_one_initcall+0x34/0x17c) [ 0.458068] [] (do_one_initcall+0x34/0x17c) from [] (kernel_init+0x88/0x130) [ 0.467285] [] (kernel_init+0x88/0x130) from [] (kernel_thread_exit+0x0/0x8) [ 0.476562] ------------[ cut here ]------------ [ 0.481445] WARNING: at fs/sysfs/dir.c:455 sysfs_add_one+0x88/0xb0() [ 0.488128] sysfs: cannot create duplicate filename '/devices/platform/reg-fixed-voltage.1' [ 0.496887] Modules linked in: [ 0.500213] [] (unwind_backtrace+0x0/0xf4) from [] (warn_slowpath_common+0x4c/0x64) [ 0.510040] [] (warn_slowpath_common+0x4c/0x64) from [] (warn_slowpath_fmt+0x30/0x40) [ 0.520080] [] (warn_slowpath_fmt+0x30/0x40) from [] (sysfs_add_one+0x88/0xb0) [ 0.529479] [] (sysfs_add_one+0x88/0xb0) from [] (create_dir+0x60/0xc8) [ 0.538238] [] (create_dir+0x60/0xc8) from [] (sysfs_create_dir+0x84/0xcc) [ 0.547271] [] (sysfs_create_dir+0x84/0xcc) from [] (kobject_add_internal+0x9c/0x1b8) [ 0.557281] [] (kobject_add_internal+0x9c/0x1b8) from [] (kobject_add+0x34/0x64) [ 0.566864] [] (kobject_add+0x34/0x64) from [] (device_add+0x88/0x5a4) [ 0.575561] [] (device_add+0x88/0x5a4) from [] (platform_device_add+0xf8/0x194) [ 0.585021] [] (platform_device_add+0xf8/0x194) from [] (overo_init+0x84/0x238) [ 0.594512] [] (overo_init+0x84/0x238) from [] (customize_machine+0x1c/0x28) [ 0.603729] [] (customize_machine+0x1c/0x28) from [] (do_one_initcall+0x34/0x17c) [ 0.613403] [] (do_one_initcall+0x34/0x17c) from [] (kernel_init+0x88/0x130) [ 0.622619] [] (kernel_init+0x88/0x130) from [] (kernel_thread_exit+0x0/0x8) [ 0.632202] ---[ end trace 1b75b31a2719ed1c ]--- [ 0.637145] kobject_add_internal failed for reg-fixed-voltage.1 with -EEXIST, don't try to register things with the same name in the same directory. [ 0.651031] [] (unwind_backtrace+0x0/0xf4) from [] (kobject_add_internal+0x1a0/0x1b8) [ 0.661041] [] (kobject_add_internal+0x1a0/0x1b8) from [] (kobject_add+0x34/0x64) [ 0.670715] [] (kobject_add+0x34/0x64) from [] (device_add+0x88/0x5a4) [ 0.679382] [] (device_add+0x88/0x5a4) from [] (platform_device_add+0xf8/0x194) [ 0.688873] [] (platform_device_add+0xf8/0x194) from [] (overo_init+0x84/0x238) [ 0.698364] [] (overo_init+0x84/0x238) from [] (customize_machine+0x1c/0x28) [ 0.707550] [] (customize_machine+0x1c/0x28) from [] (do_one_initcall+0x34/0x17c) [ 0.717224] [] (do_one_initcall+0x34/0x17c) from [] (kernel_init+0x88/0x130) [ 0.726440] [] (kernel_init+0x88/0x130) from [] (kernel_thread_exit+0x0/0x8) [ 0.752105] hw-breakpoint: debug architecture 0x4 unsupported. [ 0.778869] OMAP DMA hardware revision 4.0 [ 0.866241] bio: create slab at 0 [ 0.883331] SCSI subsystem initialized [ 0.888000] omap_device: omap2_mcspi.1: new worst case activate latency 0: 30517 [ 0.900268] omap2_mcspi omap2_mcspi.1: chipselect 0 already in use [ 0.906921] omap2_mcspi omap2_mcspi.1: can't create new device for a= ds7846 [ 0.914215] omap_device: omap2_mcspi.1: new worst case deactivate latency 0: 30517 [ 0.930358] usbcore: registered new interface driver usbfs [ 0.938018] usbcore: registered new interface driver hub [ 0.944519] usbcore: registered new device driver usb [ 0.952636] omap_device: omap_i2c.1: new worst case activate latency= 0: 30517 [ 0.968933] omap_i2c omap_i2c.1: bus 1 rev3.12 at 2600 kHz [ 0.987884] twl4030: PIH (irq 7) chaining IRQs 368..375 [ 0.993652] twl4030: power (irq 373) chaining IRQs 376..383 [ 1.002136] twl4030: gpio (irq 368) chaining IRQs 384..401 [ 1.021820] print_constraints: VMMC1: 1850 <--> 3150 mV at 3000 mV normal standby [ 1.033050] print_constraints: VDAC: 1800 mV normal standby [ 1.041870] print_constraints: VDVI: 1800 mV normal standby [ 1.048675] omap_device: omap_i2c.1: new worst case deactivate latency 0: 30517 [ 1.056854] omap_i2c omap_i2c.3: bus 3 rev3.12 at 400 kHz [ 1.074707] Switching to clocksource 32k_counter [ 1.085968] Switched to NOHz mode on CPU #0 [ 1.217803] NET: Registered protocol family 2 [ 1.223388] IP route cache hash table entries: 2048 (order: 1, 8192 = bytes) [ 1.233093] TCP established hash table entries: 8192 (order: 4, 6553= 6 bytes) [ 1.241058] TCP bind hash table entries: 8192 (order: 6, 294912 byte= s) [ 1.253143] TCP: Hash tables configured (established 8192 bind 8192) [ 1.259887] TCP reno registered [ 1.263305] UDP hash table entries: 128 (order: 1, 10240 bytes) [ 1.269927] UDP-Lite hash table entries: 128 (order: 1, 10240 bytes) [ 1.277832] NET: Registered protocol family 1 [ 1.284698] RPC: Registered named UNIX socket transport module.Is that a known issue? [ 1.290924] RPC: Registered udp transport module. [ 1.295959] RPC: Registered tcp transport module. [ 1.300964] RPC: Registered tcp NFSv4.1 backchannel transport module= =2E [ 1.308837] NetWinder Floating Point Emulator V0.97 (double precisio= n) [ 1.318511] omap_init_opp_table: no hwmod or odev for iva, [8] cannot add OPPs. [ 1.518035] VFS: Disk quotas dquot_6.5.2 [ 1.522644] Dquot-cache hash table entries: 1024 (order 0, 4096 byte= s) [ 1.533508] JFFS2 version 2.2. (NAND) (SUMMARY) =A9 2001-2006 Red H= at, Inc. [ 1.542449] msgmni has been set to 484 [ 1.552124] io scheduler noop registered [ 1.556274] io scheduler deadline registered [ 1.561187] io scheduler cfq registered (default) [ 1.571533] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 1.588043] omap_uart.0: ttyO0 at MMIO 0x4806a000 (irq =3D 72) is a = OMAP UART0 [ 1.597991] omap_uart.1: ttyO1 at MMIO 0x4806c000 (irq =3D 73) is a = OMAP UART1 [ 1.607421] omap_uart.2: ttyO2 at MMIO 0x49020000 (irq =3D 74) is a = OMAP UART2 =2E.. and lots of binary junk after this line. Seems like the UART is configured to some other baud rate at this point, but I can't see the reason yet. Most probably, the kernel runs into an Ooops later on which I can't see as my serial console is toast. Older kernels (ie, 2.6.36) work just fine. Do I miss anything obvious? Thanks, Daniel -- To unsubscribe from this list: send the line "unsubscribe linux-omap" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html From mboxrd@z Thu Jan 1 00:00:00 1970 From: zonque@gmail.com (Daniel Mack) Date: Fri, 17 Jun 2011 16:00:06 +0200 Subject: Trouble with newer kernels on Gumstix Overo boards Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi Tony et al, I'm having problems booting newer kernels on a Gumstix Overo board. I enabled CONFIG_EARLY_PRINTK to see any messages at all, and see a number of warnings first and then lots of garbled binary junk once the UART is set up. This is Linus' current master branch plus your latest fixes from git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6.git fixes Uncompressing Linux... done, booting the kernel. [ 0.000000] Linux version 3.0.0-rc3-00209-g64db347-dirty (daniel at jup) (gcc version 4.4.5 (Buildroot 2010.11-git) ) #24 SMP Fri Jun 17 15:42:59 CEST 2011 [ 0.000000] CPU: ARMv7 Processor [411fc083] revision 3 (ARMv7), cr=10c53c7f [ 0.000000] CPU: VIPT nonaliasing data cache, VIPT nonaliasing instruction cache [ 0.000000] Machine: Gumstix Overo [ 0.000000] Ignoring tag cmdline (using the default kernel command line) [ 0.000000] bootconsole [earlycon0] enabled [ 0.000000] Memory policy: ECC disabled, Data cache writeback [ 0.000000] OMAP3503 ES3.1 (l2cache neon isp ) [ 0.000000] SRAM: Mapped pa 0x40200000 to va 0xfe400000 size: 0x10000 [ 0.000000] On node 0 totalpages: 65536 [ 0.000000] free_area_init_node: node 0, pgdat c065e9e0, node_mem_map c0bb5000 [ 0.000000] Normal zone: 512 pages used for memmap [ 0.000000] Normal zone: 0 pages reserved [ 0.000000] Normal zone: 65024 pages, LIFO batch:15 [ 0.000000] Clocking rate (Crystal/Core/MPU): 26.0/331/500 MHz [ 0.000000] Reprogramming SDRC clock to 331882352 Hz [ 0.000000] PERCPU: Embedded 7 pages/cpu @c0dba000 s5952 r8192 d14528 u32768 [ 0.000000] pcpu-alloc: s5952 r8192 d14528 u32768 alloc=8*4096 [ 0.000000] pcpu-alloc: [0] 0 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 65024 [ 0.000000] Kernel command line: debug earlyprintk console=ttyS2,115200 root=/dev/mmcblk0p2 rw rootfstype=ext3 rootwait [ 0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes) [ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes) [ 0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes) [ 0.000000] Memory: 256MB = 256MB total [ 0.000000] Memory: 247860k/247860k available, 14284k reserved, 0K highmem [ 0.000000] Virtual kernel memory layout: [ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB) [ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB) [ 0.000000] DMA : 0xffc00000 - 0xffe00000 ( 2 MB) [ 0.000000] vmalloc : 0xd0800000 - 0xf8000000 ( 632 MB) [ 0.000000] lowmem : 0xc0000000 - 0xd0000000 ( 256 MB) [ 0.000000] modules : 0xbf000000 - 0xc0000000 ( 16 MB) [ 0.000000] .init : 0xc0008000 - 0xc0051000 ( 292 kB) [ 0.000000] .text : 0xc0051000 - 0xc05dd334 (5681 kB) [ 0.000000] .data : 0xc05de000 - 0xc065fe00 ( 520 kB) [ 0.000000] .bss : 0xc065fe24 - 0xc0bb4e68 (5461 kB) [ 0.000000] Hierarchical RCU implementation. [ 0.000000] NR_IRQS:410 [ 0.000000] IRQ: Found an INTC at 0xfa200000 (revision 4.0) with 96 interrupts [ 0.000000] Total of 96 interrupts on 1 active controller [ 0.000000] OMAP clockevent source: GPTIMER1 at 32768 Hz [ 0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 131071999ms [ 0.000000] Console: colour dummy device 80x30 [ 0.000000] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 0.000000] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 0.000000] ... MAX_LOCK_DEPTH: 48 [ 0.000000] ... MAX_LOCKDEP_KEYS: 8191 [ 0.000000] ... CLASSHASH_SIZE: 4096 [ 0.000000] ... MAX_LOCKDEP_ENTRIES: 16384 [ 0.000000] ... MAX_LOCKDEP_CHAINS: 32768 [ 0.000000] ... CHAINHASH_SIZE: 16384 [ 0.000000] memory used by lock dependency info: 3695 kB [ 0.000000] per task-struct memory footprint: 1152 bytes [ 0.057312] Calibrating delay loop... 497.82 BogoMIPS (lpj=1941504) [ 0.096282] pid_max: default: 32768 minimum: 301 [ 0.102081] Security Framework initialized [ 0.106842] Mount-cache hash table entries: 512 [ 0.117034] CPU: Testing write buffer coherency: ok [ 0.126556] Brought up 1 CPUs [ 0.129730] SMP: Total of 1 processors activated (497.82 BogoMIPS). [ 0.154479] omap_hwmod: _populate_mpu_rt_base found no _mpu_rt_va for l4_core [ 0.162017] omap_hwmod: _populate_mpu_rt_base found no _mpu_rt_va for l4_per [ 0.169433] omap_hwmod: _populate_mpu_rt_base found no _mpu_rt_va for l4_wkup [ 0.177429] omap_hwmod: gpt12_fck: missing clockdomain for gpt12_fck. [ 0.200500] omap_hwmod: i2c1: softreset failed (waited 10000 usec) [ 0.221557] omap_hwmod: i2c2: softreset failed (waited 10000 usec) [ 0.242614] omap_hwmod: i2c3: softreset failed (waited 10000 usec) [ 0.249938] omap_hwmod: am35x_otg_hs: cannot be enabled (3) [ 0.261901] print_constraints: dummy: [ 0.267517] NET: Registered protocol family 16 [ 0.273895] GPMC revision 5.0 [ 0.287017] omap_device: omap_gpio.0: new worst case activate latency 0: 91552 [ 0.298126] OMAP GPIO hardware version 2.5 [ 0.304260] OMAP GPIO hardware version 2.5 [ 0.310638] OMAP GPIO hardware version 2.5 [ 0.316986] OMAP GPIO hardware version 2.5 [ 0.323150] OMAP GPIO hardware version 2.5 [ 0.329376] OMAP GPIO hardware version 2.5 [ 0.344146] omap_mux_init: Add partition: #1: core, flags: 0 [ 0.362213] omap_device: omap_uart.0: new worst case activate latency 0: 30517 [ 0.362579] omap_device: omap_uart.0: new worst case deactivate latency 0: 30517 [ 0.381591] Found NAND on CS0 [ 0.384857] Registering NAND on CS0 [ 0.391021] kobject (c06231f0): tried to init an initialized object, something is seriously wrong. [ 0.400482] [] (unwind_backtrace+0x0/0xf4) from [] (kobject_init+0x7c/0x90) [ 0.409637] [] (kobject_init+0x7c/0x90) from [] (device_initialize+0x24/0x94) [ 0.418945] [] (device_initialize+0x24/0x94) from [] (platform_device_register+0x10/0x1c) [ 0.429321] [] (platform_device_register+0x10/0x1c) from [] (overo_init+0x84/0x238) [ 0.439178] [] (overo_init+0x84/0x238) from [] (customize_machine+0x1c/0x28) [ 0.448394] [] (customize_machine+0x1c/0x28) from [] (do_one_initcall+0x34/0x17c) [ 0.458068] [] (do_one_initcall+0x34/0x17c) from [] (kernel_init+0x88/0x130) [ 0.467285] [] (kernel_init+0x88/0x130) from [] (kernel_thread_exit+0x0/0x8) [ 0.476562] ------------[ cut here ]------------ [ 0.481445] WARNING: at fs/sysfs/dir.c:455 sysfs_add_one+0x88/0xb0() [ 0.488128] sysfs: cannot create duplicate filename '/devices/platform/reg-fixed-voltage.1' [ 0.496887] Modules linked in: [ 0.500213] [] (unwind_backtrace+0x0/0xf4) from [] (warn_slowpath_common+0x4c/0x64) [ 0.510040] [] (warn_slowpath_common+0x4c/0x64) from [] (warn_slowpath_fmt+0x30/0x40) [ 0.520080] [] (warn_slowpath_fmt+0x30/0x40) from [] (sysfs_add_one+0x88/0xb0) [ 0.529479] [] (sysfs_add_one+0x88/0xb0) from [] (create_dir+0x60/0xc8) [ 0.538238] [] (create_dir+0x60/0xc8) from [] (sysfs_create_dir+0x84/0xcc) [ 0.547271] [] (sysfs_create_dir+0x84/0xcc) from [] (kobject_add_internal+0x9c/0x1b8) [ 0.557281] [] (kobject_add_internal+0x9c/0x1b8) from [] (kobject_add+0x34/0x64) [ 0.566864] [] (kobject_add+0x34/0x64) from [] (device_add+0x88/0x5a4) [ 0.575561] [] (device_add+0x88/0x5a4) from [] (platform_device_add+0xf8/0x194) [ 0.585021] [] (platform_device_add+0xf8/0x194) from [] (overo_init+0x84/0x238) [ 0.594512] [] (overo_init+0x84/0x238) from [] (customize_machine+0x1c/0x28) [ 0.603729] [] (customize_machine+0x1c/0x28) from [] (do_one_initcall+0x34/0x17c) [ 0.613403] [] (do_one_initcall+0x34/0x17c) from [] (kernel_init+0x88/0x130) [ 0.622619] [] (kernel_init+0x88/0x130) from [] (kernel_thread_exit+0x0/0x8) [ 0.632202] ---[ end trace 1b75b31a2719ed1c ]--- [ 0.637145] kobject_add_internal failed for reg-fixed-voltage.1 with -EEXIST, don't try to register things with the same name in the same directory. [ 0.651031] [] (unwind_backtrace+0x0/0xf4) from [] (kobject_add_internal+0x1a0/0x1b8) [ 0.661041] [] (kobject_add_internal+0x1a0/0x1b8) from [] (kobject_add+0x34/0x64) [ 0.670715] [] (kobject_add+0x34/0x64) from [] (device_add+0x88/0x5a4) [ 0.679382] [] (device_add+0x88/0x5a4) from [] (platform_device_add+0xf8/0x194) [ 0.688873] [] (platform_device_add+0xf8/0x194) from [] (overo_init+0x84/0x238) [ 0.698364] [] (overo_init+0x84/0x238) from [] (customize_machine+0x1c/0x28) [ 0.707550] [] (customize_machine+0x1c/0x28) from [] (do_one_initcall+0x34/0x17c) [ 0.717224] [] (do_one_initcall+0x34/0x17c) from [] (kernel_init+0x88/0x130) [ 0.726440] [] (kernel_init+0x88/0x130) from [] (kernel_thread_exit+0x0/0x8) [ 0.752105] hw-breakpoint: debug architecture 0x4 unsupported. [ 0.778869] OMAP DMA hardware revision 4.0 [ 0.866241] bio: create slab at 0 [ 0.883331] SCSI subsystem initialized [ 0.888000] omap_device: omap2_mcspi.1: new worst case activate latency 0: 30517 [ 0.900268] omap2_mcspi omap2_mcspi.1: chipselect 0 already in use [ 0.906921] omap2_mcspi omap2_mcspi.1: can't create new device for ads7846 [ 0.914215] omap_device: omap2_mcspi.1: new worst case deactivate latency 0: 30517 [ 0.930358] usbcore: registered new interface driver usbfs [ 0.938018] usbcore: registered new interface driver hub [ 0.944519] usbcore: registered new device driver usb [ 0.952636] omap_device: omap_i2c.1: new worst case activate latency 0: 30517 [ 0.968933] omap_i2c omap_i2c.1: bus 1 rev3.12 at 2600 kHz [ 0.987884] twl4030: PIH (irq 7) chaining IRQs 368..375 [ 0.993652] twl4030: power (irq 373) chaining IRQs 376..383 [ 1.002136] twl4030: gpio (irq 368) chaining IRQs 384..401 [ 1.021820] print_constraints: VMMC1: 1850 <--> 3150 mV at 3000 mV normal standby [ 1.033050] print_constraints: VDAC: 1800 mV normal standby [ 1.041870] print_constraints: VDVI: 1800 mV normal standby [ 1.048675] omap_device: omap_i2c.1: new worst case deactivate latency 0: 30517 [ 1.056854] omap_i2c omap_i2c.3: bus 3 rev3.12 at 400 kHz [ 1.074707] Switching to clocksource 32k_counter [ 1.085968] Switched to NOHz mode on CPU #0 [ 1.217803] NET: Registered protocol family 2 [ 1.223388] IP route cache hash table entries: 2048 (order: 1, 8192 bytes) [ 1.233093] TCP established hash table entries: 8192 (order: 4, 65536 bytes) [ 1.241058] TCP bind hash table entries: 8192 (order: 6, 294912 bytes) [ 1.253143] TCP: Hash tables configured (established 8192 bind 8192) [ 1.259887] TCP reno registered [ 1.263305] UDP hash table entries: 128 (order: 1, 10240 bytes) [ 1.269927] UDP-Lite hash table entries: 128 (order: 1, 10240 bytes) [ 1.277832] NET: Registered protocol family 1 [ 1.284698] RPC: Registered named UNIX socket transport module.Is that a known issue? [ 1.290924] RPC: Registered udp transport module. [ 1.295959] RPC: Registered tcp transport module. [ 1.300964] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 1.308837] NetWinder Floating Point Emulator V0.97 (double precision) [ 1.318511] omap_init_opp_table: no hwmod or odev for iva, [8] cannot add OPPs. [ 1.518035] VFS: Disk quotas dquot_6.5.2 [ 1.522644] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) [ 1.533508] JFFS2 version 2.2. (NAND) (SUMMARY) ? 2001-2006 Red Hat, Inc. [ 1.542449] msgmni has been set to 484 [ 1.552124] io scheduler noop registered [ 1.556274] io scheduler deadline registered [ 1.561187] io scheduler cfq registered (default) [ 1.571533] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 1.588043] omap_uart.0: ttyO0 at MMIO 0x4806a000 (irq = 72) is a OMAP UART0 [ 1.597991] omap_uart.1: ttyO1 at MMIO 0x4806c000 (irq = 73) is a OMAP UART1 [ 1.607421] omap_uart.2: ttyO2 at MMIO 0x49020000 (irq = 74) is a OMAP UART2 ... and lots of binary junk after this line. Seems like the UART is configured to some other baud rate at this point, but I can't see the reason yet. Most probably, the kernel runs into an Ooops later on which I can't see as my serial console is toast. Older kernels (ie, 2.6.36) work just fine. Do I miss anything obvious? Thanks, Daniel