本人遇到一个问题，希望各位高手指导下。再次先感谢各位指导。
SDK：ti-processor-sdk-linux-rt-am437x-evm-03.01.00.06
个人编译的kernel在ti的am437-gp-evm v1.4中能都正常运行，切没有DISPC_IRQ_GFX_FIFO_UNDERFLOW中断被触发。
但运行在自己的板子上就会出现该中断。LCD屏幕上出现白色的条文闪烁。
部分启动信息如下：
U-Boot 2016.05-00118-g68166a2-dirty (Nov 00 2016 - 12:11:12 +0800)
DRAM: 1 GiB
PMIC: TPS65218
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
SF: Detected MX25L51235F with page size 256 Bytes, erase size 64 KiB, total 64 MiB, mapped at 30000000
SF: Warning - Only lower 16MiB accessible, Full access #define CONFIG_SPI_FLASH_BAR
*** Warning - bad CRC, using default environment
PMIC: TPS65218
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
SF: Detected MX25L51235F with page size 256 Bytes, erase size 64 KiB, total 64 MiB, mapped at 30000000
SF: Warning - Only lower 16MiB accessible, Full access #define CONFIG_SPI_FLASH_BAR
*** Warning - bad CRC, using default environment
Net: <ethaddr> not set. Validating first E-fuse MAC
cpsw, usb_ether
Hit any key to stop autoboot: 0
=> run findfdt
=> run usbboot
starting USB...
USB0: Register 2000440 NbrPorts 2
Starting the controller
USB XHCI 1.00
scanning bus 0 for devices... 3 USB Device(s) found
scanning usb for storage devices... 1 Storage Device(s) found
cpsw, usb_ether
Hit any key to stop autoboot: 0
=> run findfdt
=> run usbboot
starting USB...
USB0: Register 2000440 NbrPorts 2
Starting the controller
USB XHCI 1.00
scanning bus 0 for devices... 3 USB Device(s) found
scanning usb for storage devices... 1 Storage Device(s) found
USB device 0:
Device 0: Vendor: SanDisk Rev: 1.27 Prod: Cruzer Blade
Type: Removable Hard Disk
Capacity: 14907.0 MB = 14.5 GB (30529536 x 512)
... is now current device
** First descriptor is NOT a primary desc on 0:1 **
** Unrecognized filesystem type **
3454264 bytes read in 2104 ms (1.6 MiB/s)
48060 bytes read in 270 ms (173.8 KiB/s)
Booting from usb 0...
Kernel image @ 0x82000000 [ 0x000000 - 0x34b538 ]
## Flattened Device Tree blob at 88000000
Booting using the fdt blob at 0x88000000
Loading Device Tree to 8fff1000, end 8ffffbbb ... OK
Device 0: Vendor: SanDisk Rev: 1.27 Prod: Cruzer Blade
Type: Removable Hard Disk
Capacity: 14907.0 MB = 14.5 GB (30529536 x 512)
... is now current device
** First descriptor is NOT a primary desc on 0:1 **
** Unrecognized filesystem type **
3454264 bytes read in 2104 ms (1.6 MiB/s)
48060 bytes read in 270 ms (173.8 KiB/s)
Booting from usb 0...
Kernel image @ 0x82000000 [ 0x000000 - 0x34b538 ]
## Flattened Device Tree blob at 88000000
Booting using the fdt blob at 0x88000000
Loading Device Tree to 8fff1000, end 8ffffbbb ... OK
Starting kernel ...
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Initializing cgroup subsys cpuacct
[ 0.000000] Linux version 4.4.19-rt25-gf572d285f0 (peter@ubuntu) (gcc version 5.3.1 20160113 (Linaro GCC 5.3-2016.02) ) #16 PREEMPT RT Sat Nov 12 13:07:39 CST 2016
[ 0.000000] CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[ 0.000000] Machine model: KUMACT Develop TI AM437x
[ 0.000000] cma: Reserved 24 MiB at 0xbe800000
[ 0.000000] Memory policy: Data cache writeback
[ 0.000000] CPU: All CPU(s) started in SVC mode.
[ 0.000000] AM437x ES1.2 (sgx neon )
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 260416
[ 0.000000] Kernel command line: console=ttyO0,115200n8 root=/dev/sda2 rw rootfstype=ext4 rootwait
[ 0.000000] PID hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
[ 0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
[ 0.000000] Memory: 1004088K/1048576K available (6367K kernel code, 341K rwdata, 2308K rodata, 268K init, 307K bss, 19912K reserved, 24576K cma-reserved, 237568K highmem)
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
[ 0.000000] vmalloc : 0xf0800000 - 0xff800000 ( 240 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xf0000000 ( 768 MB)
[ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
[ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
[ 0.000000] .text : 0xc0008000 - 0xc0880fe4 (8676 kB)
[ 0.000000] .init : 0xc0881000 - 0xc08c4000 ( 268 kB)
[ 0.000000] .data : 0xc08c4000 - 0xc0919580 ( 342 kB)
[ 0.000000] .bss : 0xc0919580 - 0xc0966294 ( 308 kB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000] RCU kthread priority: 1.
[ 0.000000] NR_IRQS:16 nr_irqs:16 16
[ 0.000000] L2C: platform modifies aux control register: 0x0e030000 -> 0x3e430000
[ 0.000000] L2C: DT/platform modifies aux control register: 0x0e030000 -> 0x3e430000
[ 0.000000] L2C-310 enabling early BRESP for Cortex-A9
[ 0.000000] OMAP L2C310: ROM does not support power control setting
[ 0.000000] L2C-310 dynamic clock gating disabled, standby mode disabled
[ 0.000000] L2C-310 cache controller enabled, 16 ways, 256 kB
[ 0.000000] L2C-310: CACHE_ID 0x410000c9, AUX_CTRL 0x4e430000
[ 0.000000] OMAP clockevent source: timer2 at 24000000 Hz
[ 0.000058] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 89478484971ns
[ 0.000100] clocksource: timer1: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
[ 0.000124] OMAP clocksource: timer1 at 24000000 Hz
[ 0.000567] sched_clock: 64 bits at 500MHz, resolution 2ns, wraps every 4398046511103ns
[ 0.000585] clocksource: arm_global_timer: mask: 0xffffffffffffffff max_cycles: 0xe6a171a037, max_idle_ns: 881590485102 ns
[ 0.001356] clocksource: 32k_counter: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 58327039986419 ns
[ 0.001378] OMAP clocksource: 32k_counter at 32768 Hz
[ 0.002770] Console: colour dummy device 80x30
[ 0.003170] WARNING: Your 'console=ttyO0' has been replaced by 'ttyS0'
[ 0.003179] This ensures that you still see kernel messages. Please
[ 0.003184] update your kernel commandline.
[ 0.120752] Calibrating delay loop... 1987.37 BogoMIPS (lpj=9936896)
[ 0.120767] pid_max: default: 32768 minimum: 301
[ 0.121389] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.121407] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.124760] Initializing cgroup subsys io
[ 0.124845] Initializing cgroup subsys memory
[ 0.125055] Initializing cgroup subsys devices
[ 0.125116] Initializing cgroup subsys freezer
[ 0.125154] Initializing cgroup subsys perf_event
[ 0.125181] Initializing cgroup subsys pids
[ 0.125551] CPU: Testing write buffer coherency: ok
[ 0.127671] Setting up static identity map for 0x80008200 - 0x80008258
[ 0.135372] devtmpfs: initialized
[ 0.166105] VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4
[ 0.257377] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.268590] pinctrl core: initialized pinctrl subsystem
[ 0.275022] NET: Registered protocol family 16
[ 0.279672] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.291289] omap_l3_noc 44000000.ocp: L3 debug error: target 8 mod:0 (unclearable)
[ 0.292351] omap_l3_noc 44000000.ocp: L3 application error: target 8 mod:0 (unclearable)
[ 0.304247] OMAP GPIO hardware version 0.1
[ 0.317562] omap_gpio 48322000.gpio: could not find pctldev for node /ocp/l4_wkup@44c00000/scm@210000/pinmux@800/display_mux_pins, deferring probe
[ 0.326005] omap-gpmc 50000000.gpmc: could not find pctldev for node /ocp/l4_wkup@44c00000/scm@210000/pinmux@800/nand_flash_x8_default, deferring probe
[ 0.338303] hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint registers.
[ 0.338389] hw-breakpoint: maximum watchpoint size is 4 bytes.
[ 0.373005] edma 49000000.edma: TI EDMA DMA engine driver
[ 0.387284] SCSI subsystem initialized
[ 0.388185] usbcore: registered new interface driver usbfs
[ 0.388389] usbcore: registered new interface driver hub
[ 0.388987] usbcore: registered new device driver usb
[ 0.394516] omap_i2c 44e0b000.i2c: bus 0 rev0.12 at 100 kHz
[ 0.395568] media: Linux media interface: v0.10
[ 0.395817] Linux video capture interface: v2.00
[ 0.395967] pps_core: LinuxPPS API ver. 1 registered
[ 0.395984] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[ 0.396051] PTP clock support registered
[ 0.396201] EDAC MC: Ver: 3.0.0
[ 0.399757] omap-mailbox 480c8000.mailbox: omap mailbox rev 0x400
[ 0.405799] clocksource: Switched to clocksource arm_global_timer
[ 0.434745] NET: Registered protocol family 2
[ 0.438779] TCP established hash table entries: 8192 (order: 3, 32768 bytes)
[ 0.439128] TCP bind hash table entries: 8192 (order: 5, 196608 bytes)
[ 0.442932] TCP: Hash tables configured (established 8192 bind 8192)
[ 0.443825] UDP hash table entries: 512 (order: 3, 32768 bytes)
[ 0.444756] UDP-Lite hash table entries: 512 (order: 3, 32768 bytes)
[ 0.448752] NET: Registered protocol family 1
[ 0.451741] RPC: Registered named UNIX socket transport module.
[ 0.451818] RPC: Registered udp transport module.
[ 0.451828] RPC: Registered tcp transport module.
[ 0.451839] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.461425] futex hash table entries: 256 (order: 1, 8192 bytes)
[ 0.478219] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.480636] NFS: Registering the id_resolver key type
[ 0.480953] Key type id_resolver registered
[ 0.480961] Key type id_legacy registered
[ 0.481263] ntfs: driver 2.1.32 [Flags: R/O].
[ 0.497925] bounce: pool size: 64 pages
[ 0.499164] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 248)
[ 0.499256] io scheduler noop registered
[ 0.499288] io scheduler deadline registered
[ 0.499941] io scheduler cfq registered (default)
[ 0.513008] pinctrl-single 44e10800.pinmux: 199 pins at pa f9e10800 size 796
[ 0.524459] backlight supply power not found, using dummy regulator
[ 0.655706] Serial: 8250/16550 driver, 10 ports, IRQ sharing disabled
[ 0.664544] omap8250 44e09000.serial: No clock speed specified: using default: 48000000
[ 0.668962] 44e09000.serial: ttyS0 at MMIO 0x44e09000 (irq = 30, base_baud = 3000000) is a 8250
[ 1.383110] console [ttyS0] enabled
[ 1.390324] [drm] Initialized drm 1.1.0 20060810
[ 1.399039] 4832a000.dss supply vdda_video not found, using dummy regulator
[ 1.406849] OMAP DSS rev 2.0
[ 1.410589] omapdss_dss 4832a000.dss: bound 4832a400.dispc (ops dispc_component_ops)
[ 1.422872] peter trace panel_dpi_probe_of
[ 1.455015] loop: module loaded
[ 1.509732] libphy: Fixed MDIO Bus: probed
[ 1.585837] davinci_mdio 4a101000.mdio: davinci mdio revision 1.6
[ 1.592072] davinci_mdio 4a101000.mdio: detected phy mask fffffffc
[ 1.603678] libphy: 4a101000.mdio: probed
[ 1.608345] davinci_mdio 4a101000.mdio: phy[0]: device 4a101000.mdio:00, driver SMSC LAN8710/LAN8720
[ 1.617579] davinci_mdio 4a101000.mdio: phy[1]: device 4a101000.mdio:01, driver SMSC LAN8710/LAN8720
[ 1.630616] cpsw 4a100000.ethernet: Missing dual_emac_res_vlan in DT.
[ 1.637584] cpsw 4a100000.ethernet: Using 1 as Reserved VLAN for 0 slave
[ 1.644617] cpsw 4a100000.ethernet: Missing dual_emac_res_vlan in DT.
[ 1.651290] cpsw 4a100000.ethernet: Using 2 as Reserved VLAN for 1 slave
[ 1.658065] cpsw 4a100000.ethernet: Detected MACID = a0:f6:fd:19:e7:46
[ 1.668212] cpsw 4a100000.ethernet: cpsw: Detected MACID = a0:f6:fd:19:e7:48
[ 2.100581] xhci-hcd xhci-hcd.0.auto: xHCI Host Controller
[ 2.106657] xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 1
[ 2.116341] xhci-hcd xhci-hcd.0.auto: hcc params 0x0238f06d hci version 0x100 quirks 0x00010010
[ 2.126307] xhci-hcd xhci-hcd.0.auto: irq 217, io mem 0x48390000
[ 2.136658] hub 1-0:1.0: USB hub found
[ 2.140779] hub 1-0:1.0: 1 port detected
[ 2.146528] xhci-hcd xhci-hcd.0.auto: xHCI Host Controller
[ 2.152147] xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 2
[ 2.160347] usb usb2: We don't know the algorithms for LPM for this host, disabling LPM.
[ 2.170915] hub 2-0:1.0: USB hub found
[ 2.174875] hub 2-0:1.0: 1 port detected
[ 2.181052] xhci-hcd xhci-hcd.1.auto: xHCI Host Controller
[ 2.187064] xhci-hcd xhci-hcd.1.auto: new USB bus registered, assigned bus number 3
[ 2.196740] xhci-hcd xhci-hcd.1.auto: hcc params 0x0238f06d hci version 0x100 quirks 0x00010010
[ 2.206863] xhci-hcd xhci-hcd.1.auto: irq 218, io mem 0x483d0000
[ 2.216648] hub 3-0:1.0: USB hub found
[ 2.220698] hub 3-0:1.0: 1 port detected
[ 2.226476] xhci-hcd xhci-hcd.1.auto: xHCI Host Controller
[ 2.232092] xhci-hcd xhci-hcd.1.auto: new USB bus registered, assigned bus number 4
[ 2.240988] usb usb4: We don't know the algorithms for LPM for this host, disabling LPM.
[ 2.251769] hub 4-0:1.0: USB hub found
[ 2.255714] hub 4-0:1.0: 1 port detected
[ 2.262279] usbcore: registered new interface driver usb-storage
[ 2.270426] mousedev: PS/2 mouse device common for all mice
[ 2.279787] i2c /dev entries driver
[ 2.339837] sysctl duplicate entry: /net/ipv4//icmp_echo_sysrq
[ 2.346148] CPU: 0 PID: 1 Comm: swapper Not tainted 4.4.19-rt25-gf572d285f0 #16
[ 2.353514] Hardware name: Generic AM43 (Flattened Device Tree)
[ 2.360357] Backtrace:
[ 2.363017] [<c0013514>] (dump_backtrace) from [<c0013710>] (show_stack+0x18/0x1c)
[ 2.370714] r7:ef1cf300 r6:00000004 r5:00000000 r4:00000000
[ 2.376516] [<c00136f8>] (show_stack) from [<c0290458>] (dump_stack+0x24/0x28)
[ 2.383970] [<c0290434>] (dump_stack) from [<c015c898>] (__register_sysctl_table+0x478/0x664)
[ 2.392074] mmc0: new high speed MMC card at address 0001
[ 2.401672] [<c015c420>] (__register_sysctl_table) from [<c06350dc>] (register_net_sysctl+0x14/0x18)
[ 2.406031] mmcblk0: mmc0:0001 SEM04G 3.69 GiB
[ 2.407500] mmcblk0boot0: mmc0:0001 SEM04G partition 1 1.00 MiB
[ 2.408687] mmcblk0boot1: mmc0:0001 SEM04G partition 2 1.00 MiB
[ 2.444270] r10:00000000 r9:c0881600 r8:ef05fe70 r7:c0910328 r6:c0914134 r5:c0910328
[ 2.452218] r4:c0910328
[ 2.454971] [<c06350c8>] (register_net_sysctl) from [<c05b631c>] (ipv4_sysctl_init_net+0xbc/0x118)
[ 2.464090] [<c05b6260>] (ipv4_sysctl_init_net) from [<c052d894>] (ops_init+0xa8/0x10c)
[ 2.472231] r7:c0910328 r6:c0914134 r5:00000000 r4:c0914134
[ 2.478359] [<c052d7ec>] (ops_init) from [<c052e0d4>] (register_pernet_operations+0x100/0x1b4)
[ 2.487019] r9:c0881600 r8:ef05fe70 r7:c09102e0 r6:c0914134 r5:c0914134 r4:c0910328
[ 2.494856] [<c052dfd4>] (register_pernet_operations) from [<c052e1bc>] (register_pernet_subsys+0x34/0x48)
[ 2.504552] r8:000000b2 r7:ee95b7c0 r6:c08c8d60 r5:c0914134 r4:c0954550
[ 2.511379] [<c052e188>] (register_pernet_subsys) from [<c08adac4>] (sysctl_ipv4_init+0x38/0x5c)
[ 2.520205] r5:c08ada8c r4:ee93d800
[ 2.523856] [<c08ada8c>] (sysctl_ipv4_init) from [<c0009754>] (do_one_initcall+0x98/0x1e4)
[ 2.532300] r5:c08ada8c r4:c08c8d60[ 2.535909] usb 3-1: new high-speed USB device number 2 using xhci-hcd
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Initializing cgroup subsys cpuacct
[ 0.000000] Linux version 4.4.19-rt25-gf572d285f0 (peter@ubuntu) (gcc version 5.3.1 20160113 (Linaro GCC 5.3-2016.02) ) #16 PREEMPT RT Sat Nov 12 13:07:39 CST 2016
[ 0.000000] CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[ 0.000000] Machine model: KUMACT Develop TI AM437x
[ 0.000000] cma: Reserved 24 MiB at 0xbe800000
[ 0.000000] Memory policy: Data cache writeback
[ 0.000000] CPU: All CPU(s) started in SVC mode.
[ 0.000000] AM437x ES1.2 (sgx neon )
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 260416
[ 0.000000] Kernel command line: console=ttyO0,115200n8 root=/dev/sda2 rw rootfstype=ext4 rootwait
[ 0.000000] PID hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
[ 0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
[ 0.000000] Memory: 1004088K/1048576K available (6367K kernel code, 341K rwdata, 2308K rodata, 268K init, 307K bss, 19912K reserved, 24576K cma-reserved, 237568K highmem)
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
[ 0.000000] vmalloc : 0xf0800000 - 0xff800000 ( 240 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xf0000000 ( 768 MB)
[ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
[ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
[ 0.000000] .text : 0xc0008000 - 0xc0880fe4 (8676 kB)
[ 0.000000] .init : 0xc0881000 - 0xc08c4000 ( 268 kB)
[ 0.000000] .data : 0xc08c4000 - 0xc0919580 ( 342 kB)
[ 0.000000] .bss : 0xc0919580 - 0xc0966294 ( 308 kB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000] RCU kthread priority: 1.
[ 0.000000] NR_IRQS:16 nr_irqs:16 16
[ 0.000000] L2C: platform modifies aux control register: 0x0e030000 -> 0x3e430000
[ 0.000000] L2C: DT/platform modifies aux control register: 0x0e030000 -> 0x3e430000
[ 0.000000] L2C-310 enabling early BRESP for Cortex-A9
[ 0.000000] OMAP L2C310: ROM does not support power control setting
[ 0.000000] L2C-310 dynamic clock gating disabled, standby mode disabled
[ 0.000000] L2C-310 cache controller enabled, 16 ways, 256 kB
[ 0.000000] L2C-310: CACHE_ID 0x410000c9, AUX_CTRL 0x4e430000
[ 0.000000] OMAP clockevent source: timer2 at 24000000 Hz
[ 0.000058] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 89478484971ns
[ 0.000100] clocksource: timer1: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
[ 0.000124] OMAP clocksource: timer1 at 24000000 Hz
[ 0.000567] sched_clock: 64 bits at 500MHz, resolution 2ns, wraps every 4398046511103ns
[ 0.000585] clocksource: arm_global_timer: mask: 0xffffffffffffffff max_cycles: 0xe6a171a037, max_idle_ns: 881590485102 ns
[ 0.001356] clocksource: 32k_counter: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 58327039986419 ns
[ 0.001378] OMAP clocksource: 32k_counter at 32768 Hz
[ 0.002770] Console: colour dummy device 80x30
[ 0.003170] WARNING: Your 'console=ttyO0' has been replaced by 'ttyS0'
[ 0.003179] This ensures that you still see kernel messages. Please
[ 0.003184] update your kernel commandline.
[ 0.120752] Calibrating delay loop... 1987.37 BogoMIPS (lpj=9936896)
[ 0.120767] pid_max: default: 32768 minimum: 301
[ 0.121389] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.121407] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.124760] Initializing cgroup subsys io
[ 0.124845] Initializing cgroup subsys memory
[ 0.125055] Initializing cgroup subsys devices
[ 0.125116] Initializing cgroup subsys freezer
[ 0.125154] Initializing cgroup subsys perf_event
[ 0.125181] Initializing cgroup subsys pids
[ 0.125551] CPU: Testing write buffer coherency: ok
[ 0.127671] Setting up static identity map for 0x80008200 - 0x80008258
[ 0.135372] devtmpfs: initialized
[ 0.166105] VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4
[ 0.257377] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.268590] pinctrl core: initialized pinctrl subsystem
[ 0.275022] NET: Registered protocol family 16
[ 0.279672] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.291289] omap_l3_noc 44000000.ocp: L3 debug error: target 8 mod:0 (unclearable)
[ 0.292351] omap_l3_noc 44000000.ocp: L3 application error: target 8 mod:0 (unclearable)
[ 0.304247] OMAP GPIO hardware version 0.1
[ 0.317562] omap_gpio 48322000.gpio: could not find pctldev for node /ocp/l4_wkup@44c00000/scm@210000/pinmux@800/display_mux_pins, deferring probe
[ 0.326005] omap-gpmc 50000000.gpmc: could not find pctldev for node /ocp/l4_wkup@44c00000/scm@210000/pinmux@800/nand_flash_x8_default, deferring probe
[ 0.338303] hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint registers.
[ 0.338389] hw-breakpoint: maximum watchpoint size is 4 bytes.
[ 0.373005] edma 49000000.edma: TI EDMA DMA engine driver
[ 0.387284] SCSI subsystem initialized
[ 0.388185] usbcore: registered new interface driver usbfs
[ 0.388389] usbcore: registered new interface driver hub
[ 0.388987] usbcore: registered new device driver usb
[ 0.394516] omap_i2c 44e0b000.i2c: bus 0 rev0.12 at 100 kHz
[ 0.395568] media: Linux media interface: v0.10
[ 0.395817] Linux video capture interface: v2.00
[ 0.395967] pps_core: LinuxPPS API ver. 1 registered
[ 0.395984] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[ 0.396051] PTP clock support registered
[ 0.396201] EDAC MC: Ver: 3.0.0
[ 0.399757] omap-mailbox 480c8000.mailbox: omap mailbox rev 0x400
[ 0.405799] clocksource: Switched to clocksource arm_global_timer
[ 0.434745] NET: Registered protocol family 2
[ 0.438779] TCP established hash table entries: 8192 (order: 3, 32768 bytes)
[ 0.439128] TCP bind hash table entries: 8192 (order: 5, 196608 bytes)
[ 0.442932] TCP: Hash tables configured (established 8192 bind 8192)
[ 0.443825] UDP hash table entries: 512 (order: 3, 32768 bytes)
[ 0.444756] UDP-Lite hash table entries: 512 (order: 3, 32768 bytes)
[ 0.448752] NET: Registered protocol family 1
[ 0.451741] RPC: Registered named UNIX socket transport module.
[ 0.451818] RPC: Registered udp transport module.
[ 0.451828] RPC: Registered tcp transport module.
[ 0.451839] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.461425] futex hash table entries: 256 (order: 1, 8192 bytes)
[ 0.478219] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.480636] NFS: Registering the id_resolver key type
[ 0.480953] Key type id_resolver registered
[ 0.480961] Key type id_legacy registered
[ 0.481263] ntfs: driver 2.1.32 [Flags: R/O].
[ 0.497925] bounce: pool size: 64 pages
[ 0.499164] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 248)
[ 0.499256] io scheduler noop registered
[ 0.499288] io scheduler deadline registered
[ 0.499941] io scheduler cfq registered (default)
[ 0.513008] pinctrl-single 44e10800.pinmux: 199 pins at pa f9e10800 size 796
[ 0.524459] backlight supply power not found, using dummy regulator
[ 0.655706] Serial: 8250/16550 driver, 10 ports, IRQ sharing disabled
[ 0.664544] omap8250 44e09000.serial: No clock speed specified: using default: 48000000
[ 0.668962] 44e09000.serial: ttyS0 at MMIO 0x44e09000 (irq = 30, base_baud = 3000000) is a 8250
[ 1.383110] console [ttyS0] enabled
[ 1.390324] [drm] Initialized drm 1.1.0 20060810
[ 1.399039] 4832a000.dss supply vdda_video not found, using dummy regulator
[ 1.406849] OMAP DSS rev 2.0
[ 1.410589] omapdss_dss 4832a000.dss: bound 4832a400.dispc (ops dispc_component_ops)
[ 1.422872] peter trace panel_dpi_probe_of
[ 1.455015] loop: module loaded
[ 1.509732] libphy: Fixed MDIO Bus: probed
[ 1.585837] davinci_mdio 4a101000.mdio: davinci mdio revision 1.6
[ 1.592072] davinci_mdio 4a101000.mdio: detected phy mask fffffffc
[ 1.603678] libphy: 4a101000.mdio: probed
[ 1.608345] davinci_mdio 4a101000.mdio: phy[0]: device 4a101000.mdio:00, driver SMSC LAN8710/LAN8720
[ 1.617579] davinci_mdio 4a101000.mdio: phy[1]: device 4a101000.mdio:01, driver SMSC LAN8710/LAN8720
[ 1.630616] cpsw 4a100000.ethernet: Missing dual_emac_res_vlan in DT.
[ 1.637584] cpsw 4a100000.ethernet: Using 1 as Reserved VLAN for 0 slave
[ 1.644617] cpsw 4a100000.ethernet: Missing dual_emac_res_vlan in DT.
[ 1.651290] cpsw 4a100000.ethernet: Using 2 as Reserved VLAN for 1 slave
[ 1.658065] cpsw 4a100000.ethernet: Detected MACID = a0:f6:fd:19:e7:46
[ 1.668212] cpsw 4a100000.ethernet: cpsw: Detected MACID = a0:f6:fd:19:e7:48
[ 2.100581] xhci-hcd xhci-hcd.0.auto: xHCI Host Controller
[ 2.106657] xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 1
[ 2.116341] xhci-hcd xhci-hcd.0.auto: hcc params 0x0238f06d hci version 0x100 quirks 0x00010010
[ 2.126307] xhci-hcd xhci-hcd.0.auto: irq 217, io mem 0x48390000
[ 2.136658] hub 1-0:1.0: USB hub found
[ 2.140779] hub 1-0:1.0: 1 port detected
[ 2.146528] xhci-hcd xhci-hcd.0.auto: xHCI Host Controller
[ 2.152147] xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 2
[ 2.160347] usb usb2: We don't know the algorithms for LPM for this host, disabling LPM.
[ 2.170915] hub 2-0:1.0: USB hub found
[ 2.174875] hub 2-0:1.0: 1 port detected
[ 2.181052] xhci-hcd xhci-hcd.1.auto: xHCI Host Controller
[ 2.187064] xhci-hcd xhci-hcd.1.auto: new USB bus registered, assigned bus number 3
[ 2.196740] xhci-hcd xhci-hcd.1.auto: hcc params 0x0238f06d hci version 0x100 quirks 0x00010010
[ 2.206863] xhci-hcd xhci-hcd.1.auto: irq 218, io mem 0x483d0000
[ 2.216648] hub 3-0:1.0: USB hub found
[ 2.220698] hub 3-0:1.0: 1 port detected
[ 2.226476] xhci-hcd xhci-hcd.1.auto: xHCI Host Controller
[ 2.232092] xhci-hcd xhci-hcd.1.auto: new USB bus registered, assigned bus number 4
[ 2.240988] usb usb4: We don't know the algorithms for LPM for this host, disabling LPM.
[ 2.251769] hub 4-0:1.0: USB hub found
[ 2.255714] hub 4-0:1.0: 1 port detected
[ 2.262279] usbcore: registered new interface driver usb-storage
[ 2.270426] mousedev: PS/2 mouse device common for all mice
[ 2.279787] i2c /dev entries driver
[ 2.339837] sysctl duplicate entry: /net/ipv4//icmp_echo_sysrq
[ 2.346148] CPU: 0 PID: 1 Comm: swapper Not tainted 4.4.19-rt25-gf572d285f0 #16
[ 2.353514] Hardware name: Generic AM43 (Flattened Device Tree)
[ 2.360357] Backtrace:
[ 2.363017] [<c0013514>] (dump_backtrace) from [<c0013710>] (show_stack+0x18/0x1c)
[ 2.370714] r7:ef1cf300 r6:00000004 r5:00000000 r4:00000000
[ 2.376516] [<c00136f8>] (show_stack) from [<c0290458>] (dump_stack+0x24/0x28)
[ 2.383970] [<c0290434>] (dump_stack) from [<c015c898>] (__register_sysctl_table+0x478/0x664)
[ 2.392074] mmc0: new high speed MMC card at address 0001
[ 2.401672] [<c015c420>] (__register_sysctl_table) from [<c06350dc>] (register_net_sysctl+0x14/0x18)
[ 2.406031] mmcblk0: mmc0:0001 SEM04G 3.69 GiB
[ 2.407500] mmcblk0boot0: mmc0:0001 SEM04G partition 1 1.00 MiB
[ 2.408687] mmcblk0boot1: mmc0:0001 SEM04G partition 2 1.00 MiB
[ 2.444270] r10:00000000 r9:c0881600 r8:ef05fe70 r7:c0910328 r6:c0914134 r5:c0910328
[ 2.452218] r4:c0910328
[ 2.454971] [<c06350c8>] (register_net_sysctl) from [<c05b631c>] (ipv4_sysctl_init_net+0xbc/0x118)
[ 2.464090] [<c05b6260>] (ipv4_sysctl_init_net) from [<c052d894>] (ops_init+0xa8/0x10c)
[ 2.472231] r7:c0910328 r6:c0914134 r5:00000000 r4:c0914134
[ 2.478359] [<c052d7ec>] (ops_init) from [<c052e0d4>] (register_pernet_operations+0x100/0x1b4)
[ 2.487019] r9:c0881600 r8:ef05fe70 r7:c09102e0 r6:c0914134 r5:c0914134 r4:c0910328
[ 2.494856] [<c052dfd4>] (register_pernet_operations) from [<c052e1bc>] (register_pernet_subsys+0x34/0x48)
[ 2.504552] r8:000000b2 r7:ee95b7c0 r6:c08c8d60 r5:c0914134 r4:c0954550
[ 2.511379] [<c052e188>] (register_pernet_subsys) from [<c08adac4>] (sysctl_ipv4_init+0x38/0x5c)
[ 2.520205] r5:c08ada8c r4:ee93d800
[ 2.523856] [<c08ada8c>] (sysctl_ipv4_init) from [<c0009754>] (do_one_initcall+0x98/0x1e4)
[ 2.532300] r5:c08ada8c r4:c08c8d60[ 2.535909] usb 3-1: new high-speed USB device number 2 using xhci-hcd
[ 2.543076]
[ 2.544883] [<c00096bc>] (do_one_initcall) from [<c0881e88>] (kernel_init_freeable+0x138/0x1cc)
[ 2.553628] r10:00000007 r9:c0881600 r8:000000b2 r7:c08b5830 r6:c08c34d0 r5:c0919580
[ 2.561539] r4:c0919580
[ 2.564166] [<c0881d50>] (kernel_init_freeable) from [<c063a360>] (kernel_init+0x18/0xe8)
[ 2.572376] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c063a348
[ 2.580280] r4:c0919580
[ 2.582888] [<c063a348>] (kernel_init) from [<c000fb00>] (ret_from_fork+0x14/0x34)
[ 2.590491] r5:c063a348 r4:00000000
[ 2.597577] NET: Registered protocol family 10
[ 2.609611] sit: IPv6 over IPv4 tunneling driver
[ 2.618032] NET: Registered protocol family 17
[ 2.624447] Key type dns_resolver registered
[ 2.629695] omap_voltage_late_init: Voltage driver support not added
[ 2.650031] omapdrm omapdrm.0: DMM not available, disable DMM support
[ 2.660760] peter trace omap_connector_init :lcd
[ 2.666887] peter trace omap_plane_init gfx: type=1
[ 2.672372] peter trace omap_crtc_init lcd
[ 2.678421] peter trace omap_plane_init vid1: type=0
[ 2.688071] peter trace omap_plane_init vid2: type=0
[ 2.690221] hub 3-1:1.0: USB hub found
[ 2.690800] hub 3-1:1.0: 4 ports detected
[ 2.703944] peter trace omap_modeset_init registered 3 planes, 1 crtcs, 1 encoders and 1 connectors
[ 2.713184] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 2.719848] [drm] No driver support for vblank timestamp query.
[ 2.756832] [drm:omap_plane_error_irq] *ERROR* gfx: errors: 00000040
[ 2.756952] [drm:omap_plane_error_irq] *ERROR* gfx: errors: 00000040
[ 2.756992] [drm:omap_plane_error_irq] *ERROR* gfx: errors: 00000040
[ 2.757017] [drm:omap_plane_error_irq] *ERROR* gfx: errors: 00000040
[ 2.757036] [drm:omap_plane_error_irq] *ERROR* gfx: errors: 00000040
[ 2.757052] [drm:omap_plane_error_irq] *ERROR* gfx: errors: 00000040
[ 2.757071] [drm:omap_plane_error_irq] *ERROR* gfx: errors: 00000040
[ 2.757086] [drm:omap_plane_error_irq] *ERROR* gfx: errors: 00000040
[ 2.757101] [drm:omap_plane_error_irq] *ERROR* gfx: errors: 00000040
[ 2.757111] [drm:omap_plane_error_irq] *ERROR* gfx: errors: 00000040
[ 2.797984] random: nonblocking pool is initialized
[ 2.835235] Console: switching to colour frame buffer device 100x37
[ 2.997591] omapdrm omapdrm.0: fb0: omapdrm frame buffer device
[ 3.016787] usb 3-1.1: new high-speed USB device number 3 using xhci-hcd
[ 3.021360] [drm] Initialized omapdrm 1.0.0 20110917 on minor 0
[ 3.059653] GPIO line 136 (SelLCDorHDMI) hogged as output/high
[ 3.063339] pinctrl-single 44e10800.pinmux: pin 44e10874.0 already requested by 4a100000.ethernet; cannot claim for 50000000.gpmc
[ 3.063362] pinctrl-single 44e10800.pinmux: pin-29 (50000000.gpmc) status -22
[ 3.063380] pinctrl-single 44e10800.pinmux: could not request pin 29 (44e10874.0) from group nand_flash_x8_default on device pinctrl-single
[ 3.063403] omap-gpmc 50000000.gpmc: Error applying setting, reverse things back
[ 3.064234] omap-gpmc 50000000.gpmc: GPMC revision 6.0
[ 3.064278] gpmc_mem_init: disabling cs 0 mapped at 0x0-0x1000000
[ 3.099781] omap-gpmc 50000000.gpmc: cannot request GPMC CS 0
[ 3.099800] omap-gpmc 50000000.gpmc: failed to probe DT children
[ 3.100923] omap-gpmc: probe of 50000000.gpmc failed with error -16
[ 3.124519] hctosys: unable to open rtc device (rtc0)
[ 3.146821] vmmcwl_fixed: disabling
[ 2.544883] [<c00096bc>] (do_one_initcall) from [<c0881e88>] (kernel_init_freeable+0x138/0x1cc)
[ 2.553628] r10:00000007 r9:c0881600 r8:000000b2 r7:c08b5830 r6:c08c34d0 r5:c0919580
[ 2.561539] r4:c0919580
[ 2.564166] [<c0881d50>] (kernel_init_freeable) from [<c063a360>] (kernel_init+0x18/0xe8)
[ 2.572376] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c063a348
[ 2.580280] r4:c0919580
[ 2.582888] [<c063a348>] (kernel_init) from [<c000fb00>] (ret_from_fork+0x14/0x34)
[ 2.590491] r5:c063a348 r4:00000000
[ 2.597577] NET: Registered protocol family 10
[ 2.609611] sit: IPv6 over IPv4 tunneling driver
[ 2.618032] NET: Registered protocol family 17
[ 2.624447] Key type dns_resolver registered
[ 2.629695] omap_voltage_late_init: Voltage driver support not added
[ 2.650031] omapdrm omapdrm.0: DMM not available, disable DMM support
[ 2.660760] peter trace omap_connector_init :lcd
[ 2.666887] peter trace omap_plane_init gfx: type=1
[ 2.672372] peter trace omap_crtc_init lcd
[ 2.678421] peter trace omap_plane_init vid1: type=0
[ 2.688071] peter trace omap_plane_init vid2: type=0
[ 2.690221] hub 3-1:1.0: USB hub found
[ 2.690800] hub 3-1:1.0: 4 ports detected
[ 2.703944] peter trace omap_modeset_init registered 3 planes, 1 crtcs, 1 encoders and 1 connectors
[ 2.713184] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 2.719848] [drm] No driver support for vblank timestamp query.
[ 2.756832] [drm:omap_plane_error_irq] *ERROR* gfx: errors: 00000040
[ 2.756952] [drm:omap_plane_error_irq] *ERROR* gfx: errors: 00000040
[ 2.756992] [drm:omap_plane_error_irq] *ERROR* gfx: errors: 00000040
[ 2.757017] [drm:omap_plane_error_irq] *ERROR* gfx: errors: 00000040
[ 2.757036] [drm:omap_plane_error_irq] *ERROR* gfx: errors: 00000040
[ 2.757052] [drm:omap_plane_error_irq] *ERROR* gfx: errors: 00000040
[ 2.757071] [drm:omap_plane_error_irq] *ERROR* gfx: errors: 00000040
[ 2.757086] [drm:omap_plane_error_irq] *ERROR* gfx: errors: 00000040
[ 2.757101] [drm:omap_plane_error_irq] *ERROR* gfx: errors: 00000040
[ 2.757111] [drm:omap_plane_error_irq] *ERROR* gfx: errors: 00000040
[ 2.797984] random: nonblocking pool is initialized
[ 2.835235] Console: switching to colour frame buffer device 100x37
[ 2.997591] omapdrm omapdrm.0: fb0: omapdrm frame buffer device
[ 3.016787] usb 3-1.1: new high-speed USB device number 3 using xhci-hcd
[ 3.021360] [drm] Initialized omapdrm 1.0.0 20110917 on minor 0
[ 3.059653] GPIO line 136 (SelLCDorHDMI) hogged as output/high
[ 3.063339] pinctrl-single 44e10800.pinmux: pin 44e10874.0 already requested by 4a100000.ethernet; cannot claim for 50000000.gpmc
[ 3.063362] pinctrl-single 44e10800.pinmux: pin-29 (50000000.gpmc) status -22
[ 3.063380] pinctrl-single 44e10800.pinmux: could not request pin 29 (44e10874.0) from group nand_flash_x8_default on device pinctrl-single
[ 3.063403] omap-gpmc 50000000.gpmc: Error applying setting, reverse things back
[ 3.064234] omap-gpmc 50000000.gpmc: GPMC revision 6.0
[ 3.064278] gpmc_mem_init: disabling cs 0 mapped at 0x0-0x1000000
[ 3.099781] omap-gpmc 50000000.gpmc: cannot request GPMC CS 0
[ 3.099800] omap-gpmc 50000000.gpmc: failed to probe DT children
[ 3.100923] omap-gpmc: probe of 50000000.gpmc failed with error -16
[ 3.124519] hctosys: unable to open rtc device (rtc0)
[ 3.146821] vmmcwl_fixed: disabling
