TI的技术顾问大家好
我买了开发板回来，将原来McASP3修改为McASP7,想让声卡继续工作
第一步：
dra7.dtsi中间修改mcasp3中status = "disabled"，同时mcasp7中status = "enable"
arch/arm/boot/dts/am57xx-beagle-x15.dts中
删除&mcasp3 {
}
添加&mcasp7 {
}结点
第二步：测试
内核打印
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 4.1.13-g8dc6617 (root@y) (gcc version 4.9.3 2015046
[ 0.000000] CPU: ARMv7 Processor [412fc0f2] revision 2 (ARMv7), cr=30c5387d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction cache
[ 0.000000] Machine model: TI AM572x EVM
[ 0.000000] Reserved memory: created CMA memory pool at 0x0000000095800000, B
[ 0.000000] Reserved memory: initialized node ipu2_cma@95800000, compatible l
[ 0.000000] Reserved memory: created CMA memory pool at 0x0000000099000000, B
[ 0.000000] Reserved memory: initialized node dsp1_cma@99000000, compatible l
[ 0.000000] Reserved memory: created CMA memory pool at 0x000000009d000000, B
[ 0.000000] Reserved memory: initialized node ipu1_cma@9d000000, compatible l
[ 0.000000] Reserved memory: created CMA memory pool at 0x000000009f000000, B
[ 0.000000] Reserved memory: initialized node dsp2_cma@9f000000, compatible l
[ 0.000000] cma: Reserved 24 MiB at 0x00000000fe400000
[ 0.000000] Forcing write-allocate cache policy for SMP
[ 0.000000] Memory policy: Data cache writealloc
[ 0.000000] DRA752 ES2.0
[ 0.000000] PERCPU: Embedded 12 pages/cpu @ee532000 s17088 r8192 d23872 u4912
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pa8
[ 0.000000] Kernel command line: console=ttyO2,115200n8 root=PARTUUID=000000t
[ 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: 1681180K/1897472K available (6347K kernel code, 293K rwd)
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
[ 0.000000] vmalloc : 0xf0000000 - 0xff000000 ( 240 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xef800000 ( 760 MB)
[ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
[ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
[ 0.000000] .text : 0xc0008000 - 0xc0863074 (8557 kB)
[ 0.000000] .init : 0xc0864000 - 0xc08b8000 ( 336 kB)
[ 0.000000] .data : 0xc08b8000 - 0xc09017a8 ( 294 kB)
[ 0.000000] .bss : 0xc0904000 - 0xc09437cc ( 254 kB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000] Additional per-CPU info printed with stalls.
[ 0.000000] NR_IRQS:16 nr_irqs:16 16
[ 0.000000] OMAP clockevent source: timer1 at 32768 Hz
[ 0.000000] clocksource 32k_counter: mask: 0xffffffff max_cycles: 0xffffffffs
[ 0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 6s
[ 0.000000] OMAP clocksource: 32k_counter at 32768 Hz
[ 0.000396] Architected cp15 timer(s) running at 6.14MHz (virt).
[ 0.000427] clocksource arch_sys_counter: mask: 0xffffffffffffff max_cycles:s
[ 0.000431] sched_clock: 56 bits at 6MHz, resolution 162ns, wraps every 4398s
[ 0.000442] Switching to timer-based delay loop, resolution 162ns
[ 0.000975] Console: colour dummy device 80x30
[ 0.000990] WARNING: Your 'console=ttyO2' has been replaced by 'ttyS2'
[ 0.000995] This ensures that you still see kernel messages. Please
[ 0.001001] update your kernel commandline.
[ 0.001014] Calibrating delay loop (skipped), value calculated using timer f)
[ 0.001027] pid_max: default: 32768 minimum: 301
[ 0.001110] Security Framework initialized
[ 0.001147] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.001156] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.001688] Initializing cgroup subsys blkio
[ 0.001703] Initializing cgroup subsys memory
[ 0.001727] Initializing cgroup subsys devices
[ 0.001739] Initializing cgroup subsys freezer
[ 0.001751] Initializing cgroup subsys perf_event
[ 0.001772] CPU: Testing write buffer coherency: ok
[ 0.002014] /cpus/cpu@0 missing clock-frequency property
[ 0.002063] /cpus/cpu@1 missing clock-frequency property
[ 0.002073] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[ 0.002108] Setting up static identity map for 0x800082c0 - 0x80008318
[ 0.060668] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[ 0.060736] Brought up 2 CPUs
[ 0.060749] SMP: Total of 2 processors activated (24.59 BogoMIPS).
[ 0.060755] CPU: All CPU(s) started in SVC mode.
[ 0.061136] devtmpfs: initialized
[ 0.086431] VFP support v0.3: implementor 41 architecture 4 part 30 variant 0
[ 0.087222] omap_hwmod: l3_main_2 using broken dt data from ocp
[ 0.100755] omap_hwmod: tptc0 using broken dt data from edma-controller
[ 0.101230] omap_hwmod: tptc1 using broken dt data from edma-controller
[ 0.274698] clocksource jiffies: mask: 0xffffffff max_cycles: 0xffffffff, mas
[ 0.278639] pinctrl core: initialized pinctrl subsystem
[ 0.279440] NET: Registered protocol family 16
[ 0.280371] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.310601] cpuidle: using governor ladder
[ 0.340630] cpuidle: using governor menu
[ 0.347921] OMAP GPIO hardware version 0.1
[ 0.354242] irq: no irq domain found for /ocp/l4@4a000000/scm@2000/pinmux@14!
[ 0.369420] platform 48478000.mcasp: Cannot lookup hwmod 'mcasp7'
[ 0.378153] No ATAGs?
[ 0.378181] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint.
[ 0.378190] hw-breakpoint: maximum watchpoint size is 8 bytes.
[ 0.380709] omap4_sram_init:Unable to allocate sram needed to handle errata 8
[ 0.380719] omap4_sram_init:Unable to get sram pool needed to handle errata 8
[ 0.381291] OMAP DMA hardware revision 0.0
[ 0.418314] edma-dma-engine edma-dma-engine.0: TI EDMA DMA engine driver
[ 0.420993] omap-dma-engine 4a056000.dma-controller: OMAP DMA engine driver
[ 0.426226] omap-iommu 40d01000.mmu: 40d01000.mmu registered
[ 0.426405] omap-iommu 40d02000.mmu: 40d02000.mmu registered
[ 0.426558] omap-iommu 58882000.mmu: 58882000.mmu registered
[ 0.426710] omap-iommu 55082000.mmu: 55082000.mmu registered
[ 0.426973] omap-iommu 41501000.mmu: 41501000.mmu registered
[ 0.427164] omap-iommu 41502000.mmu: 41502000.mmu registered
[ 0.427402] vgaarb: loaded
[ 0.427769] SCSI subsystem initialized
[ 0.428893] palmas 0-0058: Irq flag is 0x00000008
[ 0.442440] palmas 0-0058: Muxing GPIO 2f, PWM 0, LED 0
[ 0.524435] omap_i2c 48070000.i2c: bus 0 rev0.12 at 400 kHz
[ 0.524978] omap_i2c 48060000.i2c: bus 2 rev0.12 at 400 kHz
[ 0.525534] omap_i2c 4807c000.i2c: bus 4 rev0.12 at 400 kHz
[ 0.525739] media: Linux media interface: v0.10
[ 0.525795] Linux video capture interface: v2.00
[ 0.525837] pps_core: LinuxPPS API ver. 1 registered
[ 0.525844] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giom>
[ 0.525869] PTP clock support registered
[ 0.526462] omap-mailbox 4883c000.mailbox: omap mailbox rev 0x400
[ 0.526747] omap-mailbox 4883e000.mailbox: omap mailbox rev 0x400
[ 0.527024] omap-mailbox 48840000.mailbox: omap mailbox rev 0x400
[ 0.527304] omap-mailbox 48842000.mailbox: omap mailbox rev 0x400
[ 0.527576] Advanced Linux Sound Architecture Driver Initialized.
[ 0.528225] Switched to clocksource arch_sys_counter
[ 0.538083] NET: Registered protocol family 2
[ 0.538668] TCP established hash table entries: 8192 (order: 3, 32768 bytes)
[ 0.538731] TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
[ 0.538856] TCP: Hash tables configured (established 8192 bind 8192)
[ 0.538905] UDP hash table entries: 512 (order: 2, 16384 bytes)
[ 0.538936] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[ 0.539075] NET: Registered protocol family 1
[ 0.539305] RPC: Registered named UNIX socket transport module.
[ 0.539314] RPC: Registered udp transport module.
[ 0.539320] RPC: Registered tcp transport module.
[ 0.539327] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.540321] CPU PMU: Failed to parse /pmu/interrupt-affinity[0]
[ 0.540355] hw perfevents: enabled with armv7_cortex_a15 PMU driver, 7 counte
[ 0.542162] futex hash table entries: 512 (order: 3, 32768 bytes)
[ 0.542240] audit: initializing netlink subsys (disabled)
[ 0.542270] audit: type=2000 audit(0.520:1): initialized
[ 0.549292] VFS: Disk quotas dquot_6.6.0
[ 0.549452] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 0.551458] NFS: Registering the id_resolver key type
[ 0.551496] Key type id_resolver registered
[ 0.551503] Key type id_legacy registered
[ 0.551556] jffs2: version 2.2. (NAND) (SUMMARY) �© 2001-2006 Red Hat, Inc.
[ 0.553578] NET: Registered protocol family 38
[ 0.553656] bounce: pool size: 64 pages
[ 0.553669] io scheduler noop registered
[ 0.553682] io scheduler deadline registered
[ 0.553718] io scheduler cfq registered (default)
[ 0.557203] pinctrl-single 4a003400.pinmux: 281 pins at pa fc003400 size 1124
[ 0.591080] dra7-pcie 51000000.pcie: PCI host bridge to bus 0000:00
[ 0.591093] pci_bus 0000:00: root bus resource [io 0x1000-0xffff]
[ 0.591108] pci_bus 0000:00: root bus resource [mem 0x20013000-0x2fffffff]
[ 0.591119] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 0.591219] pci 0000:00:00.0: IOMMU is currently not supported for PCI
[ 0.591483] PCI: bus0: Fast back to back transfers disabled
[ 0.591610] PCI: bus1: Fast back to back transfers enabled
[ 0.591702] pci 0000:00:00.0: BAR 0: assigned [mem 0x20100000-0x201fffff]
[ 0.591716] pci 0000:00:00.0: BAR 1: assigned [mem 0x20020000-0x2002ffff]
[ 0.591729] pci 0000:00:00.0: PCI bridge to [bus 01]
[ 0.592657] backlight supply power not found, using dummy regulator
[ 0.595606] OMAP DSS rev 6.1
[ 0.595869] omapdss_dss 58000000.dss: bound 58001000.dispc (ops dispc_compon)
[ 0.596393] omapdss_dss 58000000.dss: bound 58040000.encoder (ops hdmi5_comp)
[ 0.600559] Serial: 8250/16550 driver, 10 ports, IRQ sharing enabled
[ 0.603479] 48020000.serial: ttyS2 at MMIO 0x48020000 (irq = 299, base_baud 0
[ 1.580916] console [ttyS2] enabled
[ 1.585032] 48422000.serial: ttyS7 at MMIO 0x48422000 (irq = 300, base_baud 0
[ 1.595059] [drm] Initialized drm 1.1.0 20060810
[ 1.608086] brd: module loaded
[ 1.615237] loop: module loaded
[ 1.619396] mtdoops: mtd device (mtddev=name/number) must be supplied
[ 1.678244] davinci_mdio 48485000.mdio: davinci mdio revision 1.6
[ 1.684372] davinci_mdio 48485000.mdio: detected phy mask fffffff9
[ 1.694711] libphy: 48485000.mdio: probed
[ 1.698760] davinci_mdio 48485000.mdio: phy[1]: device 48485000.mdio:01, driY
[ 1.708470] davinci_mdio 48485000.mdio: phy[2]: device 48485000.mdio:02, driY
[ 1.718743] cpsw 48484000.ethernet: Detected MACID = a0:f6:fd:b9:20:1a
[ 1.725999] cpsw 48484000.ethernet: cpsw: Detected MACID = a0:f6:fd:b9:20:1b
[ 1.734359] mousedev: PS/2 mouse device common for all mice
[ 1.739980] i2c /dev entries driver
[ 1.745844] gpio-fan gpio_fan: GPIO fan initialized
[ 1.751956] tmp102 0-0048: initialized
[ 1.758403] omap_hsmmc 4809c000.mmc: Got CD GPIO
[ 1.798862] omap_hsmmc 480b4000.mmc: no pinctrl state for sdr25 mode
[ 1.805248] omap_hsmmc 480b4000.mmc: no pinctrl state for sdr12 mode
[ 1.811879] vdd_3v3: supplied by regen1
[ 1.833812] mmc0: host does not support reading read-only switch, assuming we
[ 1.841933] mmc0: new SDHC card at address 0001
[ 1.846789] mmcblk0: mmc0:0001 SD8GB 7.27 GiB
[ 1.852601] mmcblk0: p1 p2
[ 1.888574] ledtrig-cpu: registered to indicate activity on CPUs
[ 1.894924] omap-aes 4b500000.aes: OMAP AES hw accel rev: 3.3
[ 1.900743] mmc1: MAN_BKOPS_EN bit is not set
[ 1.905797] omap-aes 4b700000.aes: OMAP AES hw accel rev: 3.3
[ 1.912111] omap-des 480a5000.des: OMAP DES hw accel rev: 2.2
[ 1.918913] omap-sham 4b101000.sham: hw accel on OMAP rev 4.3
[ 1.927550] #########################################
[ 1.933140] davinci-mcasp 48478000.mcasp: _od_fail_runtime_resume: FIXME: mio
[ 1.942459] Unhandled fault: asynchronous external abort (0x1211) at 0x000000
[ 1.942468] ------------[ cut here ]------------
[ 1.942481] WARNING: CPU: 0 PID: 0 at drivers/bus/omap_l3_noc.c:147 l3_inter)
[ 1.942487] 44000000.ocp:L3 Custom Error: MASTER MPU TARGET L4_PER2_P3 (Reads
[ 1.942492] Modules linked in:
[ 1.942499] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.1.13-g8dc6617 #2
[ 1.942502] Hardware name: Generic DRA74X (Flattened Device Tree)
[ 1.942506] Backtrace:
[ 1.942521] [<c0012f78>] (dump_backtrace) from [<c001319c>] (show_stack+0x18)
[ 1.942533] r7:c030fc28 r6:00000093 r5:c08d7c0c r4:00000000
[ 1.942542] [<c0013184>] (show_stack) from [<c0631b44>] (dump_stack+0x9c/0xd)
[ 1.942551] [<c0631aa8>] (dump_stack) from [<c0039a38>] (warn_slowpath_commo)
[ 1.942558] r5:00000009 r4:c08b9d48
[ 1.942565] [<c00399b0>] (warn_slowpath_common) from [<c0039aa0>] (warn_slow)
[ 1.942576] r8:c07dacd8 r7:00000002 r6:ee1aca10 r5:c07dad98 r4:c07dae3c
[ 1.942585] [<c0039a6c>] (warn_slowpath_fmt) from [<c030fc28>] (l3_interrupt)
[ 1.942591] r3:ee1ac880 r2:c07dae3c
[ 1.942594] r4:80080003
[ 1.942606] [<c030f9e0>] (l3_interrupt_handler) from [<c0079f54>] (handle_ir)
[ 1.942618] r10:c0900f35 r9:ee1a7600 r8:00000017 r7:00000000 r6:00000000 r50
[ 1.942622] r4:ee1acd80
[ 1.942631] [<c0079ed4>] (handle_irq_event_percpu) from [<c007a054>] (handle)
[ 1.942642] r10:c0900f33 r9:c063e148 r8:ee008000 r7:00000000 r6:ee1acd80 r50
[ 1.942646] r4:ee1a7600
[ 1.942654] [<c007a010>] (handle_irq_event) from [<c007cd80>] (handle_fasteo)
[ 1.942663] r7:00000000 r6:c08bfa3c r5:ee1a7660 r4:ee1a7600
[ 1.942671] [<c007ccc8>] (handle_fasteoi_irq) from [<c00795b8>] (generic_han)
[ 1.942680] r7:00000000 r6:00000000 r5:00000017 r4:00000017
[ 1.942688] [<c0079584>] (generic_handle_irq) from [<c0079890>] (__handle_do)
[ 1.942694] r5:00000017 r4:c08b3d2c
[ 1.942701] [<c007982c>] (__handle_domain_irq) from [<c00094ac>] (gic_handle)
[ 1.942713] r9:c063e148 r8:00000000 r7:fa212000 r6:c08b9ef8 r5:c08ba948 r4:c
[ 1.942721] [<c0009480>] (gic_handle_irq) from [<c06377c0>] (__irq_svc+0x40/)
[ 1.942725] Exception stack(0xc08b9ef8 to 0xc08b9f40)
[ 1.942729] 9ee0: 00000
[ 1.942735] 9f00: 00000000 c0020d40 c08b8000 c08ba5b4 c08ba568 00000000 00008
[ 1.942740] 9f20: c0900f33 c08b9f4c c08b9f50 c08b9f40 c00104d4 c00104d8 6000f
[ 1.942749] r7:c08b9f2c r6:ffffffff r5:60000013 r4:c00104d8
[ 1.942757] [<c0010498>] (arch_cpu_idle) from [<c0070618>] (cpu_startup_entr)
[ 1.942771] [<c0070378>] (cpu_startup_entry) from [<c062e1d0>] (rest_init+0x)
[ 1.942774] r7:00000000
[ 1.942785] [<c062e140>] (rest_init) from [<c0864d4c>] (start_kernel+0x404/0)
[ 1.942791] r5:00000000 r4:c0904050
[ 1.942797] [<c0864948>] (start_kernel) from [<80008090>] (0x80008090)
[ 1.942809] r10:00000000 r9:412fc0f2 r8:80007000 r7:c08be498 r6:c08a4b0c r54
[ 1.942812] r4:c0904214
[ 1.942825] ---[ end trace dea9df4db3bc530e ]---
[ 2.246533] pgd = c0003000
[ 2.249250] [00000000] *pgd=80000080004003, *pmd=00000000
[ 2.254693] Internal error: : 1211 [#1] PREEMPT SMP ARM
[ 2.259941] Modules linked in:
[ 2.263018] CPU: 1 PID: 1 Comm: swapper/0 Tainted: G W 4.1.13-g2
[ 2.270971] Hardware name: Generic DRA74X (Flattened Device Tree)
[ 2.277092] task: ee088000 ti: ee08c000 task.ti: ee08c000
[ 2.282518] PC is at __pm_runtime_idle+0x24/0x84
[ 2.287156] LR is at davinci_mcasp_probe+0x9f8/0xb3c
[ 2.292143] pc : [<c0409804>] lr : [<c0545894>] psr: 20000013
[ 2.292143] sp : ee08dd18 ip : ee08dd38 fp : ee08dd34
[ 2.303668] r10: ee1fb3c0 r9 : 00000000 r8 : 00000000
[ 2.308919] r7 : 00000000 r6 : 00000000 r5 : 00000005 r4 : ee20f810
[ 2.315477] r3 : ee20f8d8 r2 : 00000000 r1 : 00000005 r0 : ee20f810
[ 2.322033] Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kerl
[ 2.329371] Control: 30c5387d Table: 80003000 DAC: 55555555
[ 2.335143] Process swapper/0 (pid: 1, stack limit = 0xee08c218)
[ 2.341175] Stack: (0xee08dd18 to 0xee08e000)
[ 2.345551] dd00: ed910
[ 2.353764] dd20: 00000000 00000000 ee08ddcc ee08dd38 c0545894 c04097ec 00000
[ 2.361976] dd40: ed911610 c01862a0 c08f9088 ee20f800 ee08dd74 00000008 ee571
[ 2.370189] dd60: 0000008c ee200aa0 ee08dd94 ed9305a0 00000000 ee200aa0 c07e0
[ 2.378404] dd80: 00000001 00000000 ee08ddbc ee08dd98 c01889a8 c01853d0 ee200
[ 2.386618] dda0: ee20f818 c0939304 ee20f810 c08f8f34 fffffdfb 00000000 c0860
[ 2.394833] ddc0: ee08ddec ee08ddd0 c0402480 c0544ea8 c0939304 ee20f810 00004
[ 2.403046] dde0: ee08de14 ee08ddf0 c0400ae8 c0402440 ee20f810 c08f8f34 ee200
[ 2.411259] de00: c08b1530 c08645ec ee08de34 ee08de18 c0400d08 c0400970 00004
[ 2.419472] de20: c0400c74 00000000 ee08de5c ee08de38 c03fee5c c0400c80 ee044
[ 2.427683] de40: ee047a70 c08f8f34 ed929380 c08e5db0 ee08de6c ee08de60 c0408
[ 2.435900] de60: ee08de94 ee08de70 c04001f0 c0400530 c081bb48 ee08de80 c08f0
[ 2.444113] de80: c08bd120 ed92f5c0 ee08deac ee08de98 c0401374 c04000ac c08b0
[ 2.452328] dea0: ee08debc ee08deb0 c04023c4 c0401300 ee08decc ee08dec0 c0894
[ 2.460544] dec0: ee08df4c ee08ded0 c00097a8 c089654c c017cbac 00000001 ee088
[ 2.468760] dee0: ee08df00 ee08def0 c086162c 00000000 ef7ff6c4 c065e58c ee088
[ 2.476970] df00: c0052f40 c08645f8 00000000 00000006 00000006 ef7ff6cc c0800
[ 2.485182] df20: 00000000 00000006 c08a4914 c0904000 c0904000 c08b1530 c086c
[ 2.493396] df40: ee08df94 ee08df50 c0864f28 c0009720 00000006 00000006 c0868
[ 2.501607] df60: c0130e80 00000096 ee08df94 c0904000 c062e1d4 00000000 00000
[ 2.509820] df80: 00000000 00000000 ee08dfac ee08df98 c062e1ec c0864d64 00004
[ 2.518033] dfa0: 00000000 ee08dfb0 c000fa08 c062e1e0 00000000 00000000 00000
[ 2.526244] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000
[ 2.534457] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 fdff6
[ 2.542667] Backtrace:
[ 2.545132] [<c04097e0>] (__pm_runtime_idle) from [<c0545894>] (davinci_mcas)
[ 2.553952] r7:00000000 r6:00000000 r5:ee20f810 r4:ed911610
[ 2.559679] [<c0544e9c>] (davinci_mcasp_probe) from [<c0402480>] (platform_d)
[ 2.568411] r10:00000000 r9:c08645ec r8:00000000 r7:fffffdfb r6:c08f8f34 r50
[ 2.576316] r4:c0939304
[ 2.578869] [<c0402434>] (platform_drv_probe) from [<c0400ae8>] (driver_prob)
[ 2.587776] r7:c08f8f34 r6:00000000 r5:ee20f810 r4:c0939304
[ 2.593500] [<c0400964>] (driver_probe_device) from [<c0400d08>] (__driver_a)
[ 2.601971] r9:c08645ec r8:c08b1530 r7:00000000 r6:ee20f844 r5:c08f8f34 r4:0
[ 2.609800] [<c0400c74>] (__driver_attach) from [<c03fee5c>] (bus_for_each_d)
[ 2.618010] r7:00000000 r6:c0400c74 r5:c08f8f34 r4:00000000
[ 2.623733] [<c03fedec>] (bus_for_each_dev) from [<c0400548>] (driver_attach)
[ 2.631768] r6:c08e5db0 r5:ed929380 r4:c08f8f34
[ 2.636433] [<c0400524>] (driver_attach) from [<c04001f0>] (bus_add_driver+0)
[ 2.644474] [<c04000a0>] (bus_add_driver) from [<c0401374>] (driver_register)
[ 2.652596] r7:ed92f5c0 r6:c08bd120 r5:c0896540 r4:c08f8f34
[ 2.658316] [<c04012f4>] (driver_register) from [<c04023c4>] (__platform_dri)
[ 2.667399] r5:c0896540 r4:c08bd120
[ 2.671010] [<c0402368>] (__platform_driver_register) from [<c089655c>] (dav)
[ 2.680972] [<c0896540>] (davinci_mcasp_driver_init) from [<c00097a8>] (do_o)
[ 2.690061] [<c0009714>] (do_one_initcall) from [<c0864f28>] (kernel_init_fr)
[ 2.698794] r10:c08a491c r9:c08645ec r8:c08b1530 r7:c0904000 r6:c0904000 r54
[ 2.706698] r4:00000006
[ 2.709255] [<c0864d58>] (kernel_init_freeable) from [<c062e1ec>] (kernel_in)
[ 2.717463] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r54
[ 2.725367] r4:c0904000
[ 2.727926] [<c062e1d4>] (kernel_init) from [<c000fa08>] (ret_from_fork+0x14)
[ 2.735524] r5:c062e1d4 r4:00000000
[ 2.739131] Code: e1a04000 0a00000a e28030c8 f57ff05b (f593f000)
[ 2.745255] ---[ end trace dea9df4db3bc530f ]---
[ 2.749968] mmc1: new DDR MMC card at address 0001
[ 2.755109] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0b
[ 2.755109]
[ 2.755220] mmcblk1: mmc1:0001 S10004 3.56 GiB
[ 2.755332] mmcblk1boot0: mmc1:0001 S10004 partition 1 4.00 MiB
[ 2.774770] CPU1: stopping
[ 2.777494] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G D W 4.1.13-g2
[ 2.785443] Hardware name: Generic DRA74X (Flattened Device Tree)
[ 2.791559] Backtrace:
[ 2.794033] [<c0012f78>] (dump_backtrace) from [<c001319c>] (show_stack+0x18)
[ 2.801632] r7:fa212000 r6:00000000 r5:c08d7c0c r4:00000000
[ 2.807353] [<c0013184>] (show_stack) from [<c0631b44>] (dump_stack+0x9c/0xd)
[ 2.814612] [<c0631aa8>] (dump_stack) from [<c0015ae8>] (handle_IPI+0x14c/0x)
[ 2.822036] r5:00000001 r4:c08b3d2c
[ 2.825645] [<c001599c+-----------------------------+>] (gic_handle_irq+0x60)
[ 2.833243] r7:fa2120| |a21200c
[ 2.838964] [<c0009480| Cannot open /dev/ttyUSB0! |77c0>] (__irq_svc+0x40/)
[ 2.846478] Exception | |
[ 2.851551] ff40: +-----------------------------+ 00000000 c0020d40 ee0a4
[ 2.859763] ff60: c08ba568 00000000 00000000 c063e148 c0900f33 ee0aff9c ee0a0
[ 2.867974] ff80: c00104d4 c00104d8 60000113 ffffffff
[ 2.873043] r7:ee0aff7c r6:ffffffff r5:60000113 r4:c00104d8
[ 2.878761] [<c0010498>] (arch_cpu_idle) from [<c0070618>] (cpu_startup_entr)
[ 2.887062] [<c0070378>] (cpu_startup_entry) from [<c0015744>] (secondary_st)
[ 2.896143] r7:c09042a8
[ 2.898698] [<c0015608>] (secondary_start_kernel) from [<8000958c>] (0x80009)
[ 2.906122] r5:00000000 r4:ae044bc0
[ 2.909732] ---[ end Kernel panic - not syncing: Attempted to kill init! exib
[ 2.909732]
求求TI的大牛帮我看看，太感谢了
