Hi, Did you by any chance find a fix to the issue. I am also facing a similar problem where my i2c-1 gets stuck with "Arbitration Lost and RT throttling activated" message.
Thanks and Regards Ison Thomas On Saturday, February 20, 2016 at 5:36:21 PM UTC+5:30, Jelle Spijker wrote: > > > Quite often my BBB gets stuck during bootup. Allways at "i2c i2c-2: SCL is > stuck low, exit recovery" > > When I reset a couple of times it boots up okay. > > My BBB runs from an SD card with Debian 4.1.17-ti-rt-r46. > > U-Boot SPL 2015.07-rc3-00001-g2c9c20a (Jun 30 2015 - 09:02:07) >> >> >>> >>> U-Boot 2015.07-rc3-00001-g2c9c20a (Jun 30 2015 - 09:02:07 -0500), Build: >>> jenkins-github_Bootloader-Builder-173 >> >> >>> Watchdog enabled >> >> I2C: ready >> >> DRAM: 512 MiB >> >> MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 >> >> Using default environment >> >> >>> Net: <ethaddr> not set. Validating first E-fuse MAC >> >> Phy 0 not found >> >> cpsw >> >> Hit any key to stop autoboot: 0 >> >> gpio: pin 53 (gpio 53) value is 1 >> >> switch to partitions #0, OK >> >> mmc0 is current device >> >> gpio: pin 54 (gpio 54) value is 1 >> >> Checking for: /uEnv.txt ... >> >> Checking for: /boot.scr ... >> >> Checking for: /boot/boot.scr ... >> >> Checking for: /boot/uEnv.txt ... >> >> gpio: pin 55 (gpio 55) value is 1 >> >> 281 bytes read in 24 ms (10.7 KiB/s) >> >> Loaded environment from /boot/uEnv.txt >> >> Using: dtb=am335x-boneblack-overlay.dtb ... >> >> Checking if uname_r is set in /boot/uEnv.txt... >> >> gpio: pin 56 (gpio 56) value is 1 >> >> Running uname_boot ... >> >> loading /boot/vmlinuz-4.1.17-ti-rt-r46 ... >> >> 7777608 bytes read in 461 ms (16.1 MiB/s) >> >> loading /boot/dtbs/4.1.17-ti-rt-r46/am335x-boneblack-overlay.dtb ... >> >> 57971 bytes read in 52 ms (1.1 MiB/s) >> >> loading /boot/initrd.img-4.1.17-ti-rt-r46 ... >> >> 5125199 bytes read in 313 ms (15.6 MiB/s) >> >> debug: [console=ttyO0,115200n8 bone_capemgr.disable_partno= >>> bone_capemgr.enable_partno=cape-univ-audio,cape-univ-emmc,cape-univ-hdmi >>> root=/dev/mmcblk0p1 ro rootfstype=ext4 rootwait fixrtc] ... >> >> debug: [bootz 0x82000000 0x88080000:4e344f 0x88000000] ... >> >> Kernel image @ 0x82000000 [ 0x000000 - 0x76ad48 ] >> >> ## Flattened Device Tree blob at 88000000 >> >> Booting using the fdt blob at 0x88000000 >> >> Loading Ramdisk to 8fb1c000, end 8ffff44f ... OK >> >> Loading Device Tree to 8fb0a000, end 8fb1b272 ... OK >> >> >>> Starting kernel ... >> >> >>> [ 0.000000] Booting Linux on physical CPU 0x0 >> >> [ 0.000000] Initializing cgroup subsys cpuset >> >> [ 0.000000] Initializing cgroup subsys cpu >> >> [ 0.000000] Initializing cgroup subsys cpuacct >> >> [ 0.000000] Linux version 4.1.17-ti-rt-r46 (peer23peer@peerLaptop) >>> (gcc version 4.9.3 20150413 (prerelease) (Linaro GCC 4.9-2015.05) ) #1 SMP >>> PREEMPT RT Sun Feb 7 17:10:04 CET 2016 >> >> [ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), >>> cr=50c5387d >> >> [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing >>> instruction cache >> >> [ 0.000000] Machine model: TI AM335x BeagleBone Black >> >> [ 0.000000] cma: Reserved 24 MiB at 0x9e000000 >> >> [ 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] PERCPU: Embedded 13 pages/cpu @df910000 s24128 r8192 >>> d20928 u53248 >> >> [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. >>> Total pages: 129408 >> >> [ 0.000000] Kernel command line: console=ttyO0,115200n8 >>> bone_capemgr.disable_partno= >>> bone_capemgr.enable_partno=cape-univ-audio,cape-univ-emmc,cape-univ-hdmi >>> root=/dev/mmcblk0p1 ro rootfstype=ext4 rootwait fixrtc >> >> [ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes) >> >> [ 0.000000] Dentry cache hash table entries: 65536 (order: 7, 524288 >>> bytes) >> >> [ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 >>> bytes) >> >> [ 0.000000] Memory: 473484K/522240K available (7169K kernel code, 935K >>> rwdata, 3764K rodata, 560K init, 954K bss, 24180K reserved, 24576K >>> cma-reserved, 0K highmem) >> >> [ 0.000000] Virtual kernel memory layout: >> >> [ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB) >> >> [ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB) >> >> [ 0.000000] vmalloc : 0xe0800000 - 0xff000000 ( 488 MB) >> >> [ 0.000000] lowmem : 0xc0000000 - 0xe0000000 ( 512 MB) >> >> [ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB) >> >> [ 0.000000] modules : 0xbf800000 - 0xbfe00000 ( 6 MB) >> >> [ 0.000000] .text : 0xc0008000 - 0xc0ab58c8 (10935 kB) >> >> [ 0.000000] .init : 0xc0ab6000 - 0xc0b42000 ( 560 kB) >> >> [ 0.000000] .data : 0xc0b42000 - 0xc0c2beac ( 936 kB) >> >> [ 0.000000] .bss : 0xc0c2e000 - 0xc0d1caa0 ( 955 kB) >> >> [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 >> >> [ 0.000000] Preemptible hierarchical RCU implementation. >> >> [ 0.000000] RCU restricting CPUs from NR_CPUS=2 to nr_cpu_ids=1. >> >> [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, >>> nr_cpu_ids=1 >> >> [ 0.000000] NR_IRQS:16 nr_irqs:16 16 >> >> [ 0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 >>> interrupts >> >> [ 0.000000] OMAP clockevent source: timer2 at 24000000 Hz >> >> [ 0.000012] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps >>> every 89478484971ns >> >> [ 0.000025] clocksource timer1: mask: 0xffffffff max_cycles: >>> 0xffffffff, max_idle_ns: 79635851949 ns >> >> [ 0.000032] OMAP clocksource: timer1 at 24000000 Hz >> >> [ 0.000226] Console: colour dummy device 80x30 >> >> [ 0.000391] WARNING: Your 'console=ttyO0' has been replaced by 'ttyS0' >> >> [ 0.000394] This ensures that you still see kernel messages. Please >> >> [ 0.000397] update your kernel commandline. >> >> [ 0.088890] Calibrating delay loop... 996.14 BogoMIPS (lpj=4980736) >> >> [ 0.088897] pid_max: default: 32768 minimum: 301 >> >> [ 0.089041] Security Framework initialized >> >> [ 0.089109] AppArmor: AppArmor disabled by boot time parameter >> >> [ 0.089112] Yama: becoming mindful. >> >> [ 0.089302] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes) >> >> [ 0.089310] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 >>> bytes) >> >> [ 0.090223] Initializing cgroup subsys blkio >> >> [ 0.090238] Initializing cgroup subsys memory >> >> [ 0.090280] Initializing cgroup subsys devices >> >> [ 0.090294] Initializing cgroup subsys freezer >> >> [ 0.090308] Initializing cgroup subsys net_cls >> >> [ 0.090320] Initializing cgroup subsys perf_event >> >> [ 0.090331] Initializing cgroup subsys net_prio >> >> [ 0.090445] CPU: Testing write buffer coherency: ok >> >> [ 0.090453] ftrace: allocating 35031 entries in 69 pages >> >> [ 0.174578] CPU0: thread -1, cpu 0, socket -1, mpidr 0 >> >> [ 0.174751] Setting up static identity map for 0x80008240 - 0x8000828c >> >> [ 0.268918] Brought up 1 CPUs >> >> [ 0.268944] SMP: Total of 1 processors activated (996.14 BogoMIPS). >> >> [ 0.268955] CPU: All CPU(s) started in SVC mode. >> >> [ 0.269892] devtmpfs: initialized >> >> [ 0.292310] VFP support v0.3: implementor 41 architecture 3 part 30 >>> variant c rev 3 >> >> [ 0.318329] omap_hwmod: debugss: _wait_target_disable failed >> >> [ 0.373438] clocksource jiffies: mask: 0xffffffff max_cycles: >>> 0xffffffff, max_idle_ns: 19112604462750000 ns >> >> [ 0.375671] xor: measuring software checksum speed >> >> [ 0.468949] arm4regs : 1222.400 MB/sec >> >> [ 0.568881] 8regs : 932.000 MB/sec >> >> [ 0.668876] 32regs : 1093.600 MB/sec >> >> [ 0.768871] neon : 1682.800 MB/sec >> >> [ 0.768881] xor: using function: neon (1682.800 MB/sec) >> >> [ 0.769074] pinctrl core: initialized pinctrl subsystem >> >> [ 0.771302] NET: Registered protocol family 16 >> >> [ 0.776046] DMA: preallocated 256 KiB pool for atomic coherent >>> allocations >> >> [ 0.808918] cpuidle: using governor ladder >> >> [ 0.838909] cpuidle: using governor menu >> >> [ 0.845771] OMAP GPIO hardware version 0.1 >> >> [ 0.846555] GPIO line 52 (EMMC ResetN) hogged as output/high >> >> [ 0.861382] No ATAGs? >> >> [ 0.861417] hw-breakpoint: debug architecture 0x4 unsupported. >> >> [ 0.861997] omap4_sram_init:Unable to allocate sram needed to handle >>> errata I688 >> >> [ 0.862014] omap4_sram_init:Unable to get sram pool needed to handle >>> errata I688 >> >> [ 1.078995] raid6: int32x1 gen() 242 MB/s >> >> [ 1.248919] raid6: int32x1 xor() 237 MB/s >> >> [ 1.418891] raid6: int32x2 gen() 365 MB/s >> >> [ 1.588905] raid6: int32x2 xor() 270 MB/s >> >> [ 1.758907] raid6: int32x4 gen() 398 MB/s >> >> [ 1.928997] raid6: int32x4 xor() 243 MB/s >> >> [ 2.098890] raid6: int32x8 gen() 325 MB/s >> >> [ 2.268948] raid6: int32x8 xor() 212 MB/s >> >> [ 2.438890] raid6: neonx1 gen() 1457 MB/s >> >> [ 2.608874] raid6: neonx2 gen() 1869 MB/s >> >> [ 2.778883] raid6: neonx4 gen() 2014 MB/s >> >> [ 2.948903] raid6: neonx8 gen() 894 MB/s >> >> [ 2.948913] raid6: using algorithm neonx4 gen() 2014 MB/s >> >> [ 2.948923] raid6: using intx1 recovery algorithm >> >> [ 2.962295] edma 49000000.edma: TI EDMA DMA engine driver >> >> [ 2.966212] vgaarb: loaded >> >> [ 2.967072] SCSI subsystem initialized >> >> [ 2.967900] usbcore: registered new interface driver usbfs >> >> [ 2.967995] usbcore: registered new interface driver hub >> >> [ 2.968162] usbcore: registered new device driver usb >> >> [ 2.969039] omap_i2c 44e0b000.i2c: could not find pctldev for node >>> /ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_i2c0_pins, deferring >>> probe >> >> [ 2.969103] omap_i2c 4819c000.i2c: could not find pctldev for node >>> /ocp/l4_wkup@44c00000/scm@210000/pinmux@800/pinmux_i2c2_pins, deferring >>> probe >> >> [ 2.969282] pps_core: LinuxPPS API ver. 1 registered >> >> [ 2.969293] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 >>> Rodolfo Giometti <[email protected] <javascript:>> >> >> [ 2.969330] PTP clock support registered >> >> [ 2.970541] omap-mailbox 480c8000.mailbox: omap mailbox rev 0x400 >> >> [ 2.971222] Advanced Linux Sound Architecture Driver Initialized. >> >> [ 2.972191] NetLabel: Initializing >> >> [ 2.972205] NetLabel: domain hash size = 128 >> >> [ 2.972213] NetLabel: protocols = UNLABELED CIPSOv4 >> >> [ 2.972281] NetLabel: unlabeled traffic allowed by default >> >> [ 2.972633] Switched to clocksource timer1 >> >> [ 3.141730] NET: Registered protocol family 2 >> >> [ 3.142897] TCP established hash table entries: 4096 (order: 2, 16384 >>> bytes) >> >> [ 3.142980] TCP bind hash table entries: 4096 (order: 4, 114688 bytes) >> >> [ 3.143125] TCP: Hash tables configured (established 4096 bind 4096) >> >> [ 3.143212] UDP hash table entries: 256 (order: 2, 16384 bytes) >> >> [ 3.143249] UDP-Lite hash table entries: 256 (order: 2, 16384 bytes) >> >> [ 3.143538] NET: Registered protocol family 1 >> >> [ 3.144411] RPC: Registered named UNIX socket transport module. >> >> [ 3.144427] RPC: Registered udp transport module. >> >> [ 3.144436] RPC: Registered tcp transport module. >> >> [ 3.144445] RPC: Registered tcp NFSv4.1 backchannel transport module. >> >> [ 3.145137] Unpacking initramfs... >> >> [ 3.506105] Freeing initrd memory: 5008K (cfb1c000 - d0000000) >> >> [ 3.506566] CPU PMU: Failed to parse /pmu/interrupt-affinity[0] >> >> [ 3.506632] hw perfevents: enabled with armv7_cortex_a8 PMU driver, 5 >>> counters available >> >> [ 3.509988] futex hash table entries: 256 (order: 2, 16384 bytes) >> >> [ 3.510135] audit: initializing netlink subsys (disabled) >> >> [ 3.510220] audit: type=2000 audit(3.450:1): initialized >> >> [ 3.524161] zpool: loaded >> >> [ 3.524187] zbud: loaded >> >> [ 3.524956] VFS: Disk quotas dquot_6.6.0 >> >> [ 3.525273] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 >>> bytes) >> >> [ 3.528888] NFS: Registering the id_resolver key type >> >> [ 3.528954] Key type id_resolver registered >> >> [ 3.528963] Key type id_legacy registered >> >> [ 3.528997] nfs4filelayout_init: NFSv4 File Layout Driver >>> Registering... >> >> [ 3.529390] fuse init (API version 7.23) >> >> [ 3.530181] SGI XFS with ACLs, security attributes, realtime, no debug >>> enabled >> >> [ 3.537109] NET: Registered protocol family 38 >> >> [ 3.537273] Block layer SCSI generic (bsg) driver version 0.4 loaded >>> (major 250) >> >> [ 3.537515] io scheduler noop registered >> >> [ 3.537533] io scheduler deadline registered >> >> [ 3.537598] io scheduler cfq registered (default) >> >> [ 3.539374] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 >>> size 568 >> >> [ 3.543086] wkup_m3_ipc 44e11324.wkup_m3_ipc: could not get rproc >>> handle >> >> [ 3.544821] Serial: 8250/16550 driver, 6 ports, IRQ sharing disabled >> >> [ 3.548629] 44e09000.serial: ttyS0 at MMIO 0x44e09000 (irq = 158, >>> base_baud = 3000000) is a 8250 >> >> [ 4.422455] console [ttyS0] enabled >> >> [ 4.427580] [drm] Initialized drm 1.1.0 20060810 >> >> [ 4.432345] usbcore: registered new interface driver udl >> >> [ 4.502668] davinci_mdio 4a101000.mdio: davinci mdio revision 1.6 >> >> [ 4.508810] davinci_mdio 4a101000.mdio: detected phy mask fffffffb >> >> [ 4.515342] davinci_mdio: dt: updated phy_id[2] from phy_mask[fffffffb] >> >> [ 4.529813] libphy: 4a101000.mdio: probed >> >> [ 4.533990] davinci_mdio 4a101000.mdio: phy[2]: device >>> 4a101000.mdio:02, driver SMSC LAN8710/LAN8720 >> >> [ 4.544091] cpsw 4a100000.ethernet: Detected MACID = 7c:66:9d:57:29:dd >> >> [ 4.552360] pegasus: v0.9.3 (2013/04/25), Pegasus/Pegasus II USB >>> Ethernet driver >> >> [ 4.560025] usbcore: registered new interface driver pegasus >> >> [ 4.565795] usbcore: registered new interface driver rtl8150 >> >> [ 4.571543] usbcore: registered new interface driver r8152 >> >> [ 4.578834] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver >> >> [ 4.585490] ehci-pci: EHCI PCI platform driver >> >> [ 4.590043] ehci-platform: EHCI generic platform driver >> >> [ 4.595538] ehci-omap: OMAP-EHCI Host Controller driver >> >> [ 4.602910] 47401300.usb-phy supply vcc not found, using dummy >>> regulator >> >> [ 4.646969] 47401b00.usb-phy supply vcc not found, using dummy >>> regulator >> >> [ 4.695409] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver >> >> [ 4.701558] musb-hdrc musb-hdrc.1.auto: new USB bus registered, >>> assigned bus number 1 >> >> [ 4.709684] usb usb1: New USB device found, idVendor=1d6b, >>> idProduct=0002 >> >> [ 4.716512] usb usb1: New USB device strings: Mfr=3, Product=2, >>> SerialNumber=1 >> >> [ 4.723770] usb usb1: Product: MUSB HDRC host driver >> >> [ 4.728760] usb usb1: Manufacturer: Linux 4.1.17-ti-rt-r46 musb-hcd >> >> [ 4.735056] usb usb1: SerialNumber: musb-hdrc.1.auto >> >> [ 4.741069] hub 1-0:1.0: USB hub found >> >> [ 4.744886] hub 1-0:1.0: 1 port detected >> >> [ 4.785445] mousedev: PS/2 mouse device common for all mice >> >> [ 4.792158] omap_rtc 44e3e000.rtc: already running >> >> [ 4.797592] omap_rtc 44e3e000.rtc: rtc core: registered 44e3e000.rtc >>> as rtc0 >> >> [ 4.806109] i2c /dev entries driver >> >> [ 4.809740] Driver for 1-wire Dallas network protocol. >> >> [ 4.816955] omap_wdt: OMAP Watchdog Timer Rev 0x01: initial timeout 60 >>> sec >> >> [ 4.825057] omap_hsmmc 48060000.mmc: Got CD GPIO >> >> [ 4.864850] omap-aes 53500000.aes: OMAP AES hw accel rev: 3.2 >> >> [ 4.876609] omap-sham 53100000.sham: hw accel on OMAP rev 4.3 >> >> [ 4.887131] hidraw: raw HID events driver (C) Jiri Kosina >> >> [ 4.894264] usbcore: registered new interface driver usbhid >> >> [ 4.899869] usbhid: USB HID core driver >> >> [ 4.904177] ashmem: initialized >> >> [ 4.908435] remoteproc0: wkup_m3 is available >> >> [ 4.910123] mmc0: host does not support reading read-only switch, >>> assuming write-enable >> >> [ 4.912076] mmc0: new high speed SDHC card at address b368 >> >> [ 4.922748] mmcblk0: mmc0:b368 NCard 7.48 GiB >> >> [ 4.924377] mmcblk0: p1 >> >> [ 4.936343] remoteproc0: Note: remoteproc is still under development >>> and considered experimental. >> >> [ 4.945346] remoteproc0: THE BINARY FORMAT IS NOT YET FINALIZED, and >>> backward compatibility isn't yet guaranteed. >> >> [ 4.960638] NET: Registered protocol family 10 >> >> [ 4.966738] mip6: Mobile IPv6 >> >> [ 4.969750] NET: Registered protocol family 17 >> >> [ 4.974432] Key type dns_resolver registered >> >> [ 4.978732] mpls_gso: MPLS GSO support >> >> [ 4.982910] omap_voltage_late_init: Voltage driver support not added >> >> [ 4.989839] cpu cpu0: of_pm_voltdm_notifier_register: Failed to get >>> cpu0 regulator/voltdm: -517 >> >> [ 4.998591] cpu cpu0: cpu0 clock notifier not ready, retry >> >> [ 5.004753] PM: bootloader does not support rtc-only! >> >> [ 5.010094] ThumbEE CPU extension supported. >> >> [ 5.014415] Registering SWP/SWPB emulation handler >> >> [ 5.020432] registered taskstats version 1 >> >> [ 5.028054] Btrfs loaded >> >> [ 5.053814] Key type encrypted registered >> >> [ 5.061202] input: tps65217_pwr_but as >>> /devices/platform/ocp/44e0b000.i2c/i2c-0/0-0024/input/input0 >> >> [ 5.092494] tps65217 0-0024: TPS65217 ID 0xe version 1.2 >> >> [ 5.098603] at24 0-0050: 32768 byte 24c256 EEPROM, writable, 1 >>> bytes/write >> >> [ 5.105712] omap_i2c 44e0b000.i2c: bus 0 rev0.11 at 400 kHz >> >> [ 5.113612] at24 2-0054: 32768 byte 24c256 EEPROM, writable, 1 >>> bytes/write >> >> [ 5.121016] at24 2-0055: 32768 byte 24c256 EEPROM, writable, 1 >>> bytes/write >> >> [ 5.128463] at24 2-0056: 32768 byte 24c256 EEPROM, writable, 1 >>> bytes/write >> >> [ 5.135910] at24 2-0057: 32768 byte 24c256 EEPROM, writable, 1 >>> bytes/write >> >> [ 5.142880] omap_i2c 4819c000.i2c: bus 2 rev0.11 at 100 kHz >> >> [ 5.150142] remoteproc0: powering up wkup_m3 >> >> [ 5.154587] remoteproc0: Booting fw image am335x-pm-firmware.elf, >>> size 219735 >> >> [ 5.156178] bone_capemgr bone_capemgr: Baseboard: >>> 'A335BNLT,000C,2714BBBK0809' >> >> [ 5.156196] bone_capemgr bone_capemgr: >>> compatible-baseboard=ti,beaglebone-black - #slots=4 >> >> [ 5.172712] omap_i2c 4819c000.i2c: Arbitration lost >> >> [ 5.182603] remoteproc0: remote processor wkup_m3 is now up >> >> [ 5.182670] wkup_m3_ipc 44e11324.wkup_m3_ipc: CM3 Firmware Version = >>> 0x191 >> >> [ 6.241709] random: nonblocking pool is initialized >> >> [ 8.002615] sched: RT throttling activated >> >> [ 8.002699] i2c i2c-2: SCL is stuck low, exit recovery >> >> >> > > -- 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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