Re: MHI driver issue with Sierra Wireless AirPrime EM919X

[Thomas Perrot <thomas.perrot@bootlin.com>]

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Hi Loic,

On Mon, 2021-08-02 at 17:22 +0200, Loic Poulain wrote:
> Hi Thomas,
> 
> On Fri, 30 Jul 2021 at 19:52, Thomas Perrot <
> thomas.perrot@bootlin.com> wrote:
> > 
> > Hello,
> > 
> > I’m trying to use the MHI driver with a Sierra Wireless AirPrime
> > EM919X
> > connected to an NXP i.MX6DL through a PCIe gen2 bus, on 5.13.6, but
> > the
> > device initialisation fails, as follows:
> > 
> > [    3.029401] mhi-pci-generic 0000:01:00.0: BAR 0: assigned [mem
> > 0x01100000-0x01100fff 64bit]
> > [    3.041095] mhi-pci-generic 0000:01:00.0: enabling device (0140 ->
> > 0142)
> > [    3.118299] mhi mhi0: Requested to power ON
> > [   11.370361] mhi mhi0: Power on setup success
> > [   11.372503] mhi mhi0: Wait for device to enter SBL or Mission mode
> > [   15.664068] mhi-pci-generic 0000:01:00.0: failed to suspend
> > device:
> > -16
> > [   22.619948] mhi-pci-generic 0000:01:00.0: refused to change power
> > state from D3hot to D0
> > [   57.289998] mhi-pci-generic 0000:01:00.0: can't change power state
> > from D3hot to D0 (config space inaccessible)
> > [   73.769675] mhi-pci-generic 0000:01:00.0: can't change power state
> > from D3cold to D0 (config space inaccessible)
> > [   73.780188] mhi-pci-generic 0000:01:00.0: can't change power state
> > from D3hot to D0 (config space inaccessible)
> > [   73.836150] PC is at mhi_pci_read_reg+0xc/0x14
> > [   73.840642] LR is at mhi_get_mhi_state+0x2c/0x5c
> > [   74.121120] [<c05dcaf4>] (mhi_pci_read_reg) from [<c05d754c>]
> > (mhi_get_mhi_state+0x2c/0x5c)
> > [   74.129529] [<c05d754c>] (mhi_get_mhi_state) from [<c05da440>]
> > (mhi_pm_resume+0x38/0x298)
> > [   74.137754] [<c05da440>] (mhi_pm_resume) from [<c05dcbd0>]
> > (mhi_pci_runtime_resume+0x70/0xe0)
> > [   74.146326] [<c05dcbd0>] (mhi_pci_runtime_resume) from
> > [<c0604da0>]
> > (pci_pm_runtime_resume+0x84/0xa0)
> > 
> > Do you have any idea where the issue might come from?
> > 
> > MHI seems to enter in READY state and waiting to enter in SBL or
> > Mission mode when the issue occurs, the host can start MHI
> > initialization by programming MMIO registers and sets the device into
> > MHI_M0 state.
> 
> runtime-pm is only enabled when the device is in mission mode, so the
> device has likely been successfully initialized, It is just that there
> is no info message indicating initialization completion and we should
> probably add that. I think maybe about some PCIe suspend/resume
> issues, could you try disabling runtime-pm for that device? or simply
> comment `pm_runtime_allow` call?

Thanks for your help, I disabled the power management, I obtains the
following trace:

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 5.13.6 (arm-oe-linux-gnueabi-gcc (GCC)
9.2.0, GNU ld (GNU Binutils) 2.32.0.20190204) #1 SMP Mon Aug 2 14:27:03
UTC 2021
[    0.000000] CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7),
cr=10c5387d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing
instruction cache
[    0.000000] OF: fdt: Machine model: i.MX6 Duallite module
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] cma: Reserved 64 MiB at 0x4c000000
[    0.000000] Zone ranges:
[    0.000000]   Normal   [mem 0x0000000010000000-0x000000003fffffff]
[    0.000000]   HighMem  [mem 0x0000000040000000-0x000000004fffffff]
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000010000000-0x000000004fffffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000010000000-
0x000000004fffffff]
[    0.000000] On node 0 totalpages: 262144
[    0.000000]   Normal zone: 1536 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 196608 pages, LIFO batch:63
[    0.000000]   HighMem zone: 65536 pages, LIFO batch:15
[    0.000000] percpu: Embedded 20 pages/cpu s52396 r8192 d21332 u81920
[    0.000000] pcpu-alloc: s52396 r8192 d21332 u81920 alloc=20*4096
[    0.000000] pcpu-alloc: [0] 0 [0] 1 
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages:
260608
[    0.000000] Kernel command line: console=ttymxc3,115200n8 loglevel=8
root=/dev/nfs ip=10.0.0.2:255.255.255.0
nfsroot=10.0.0.1:/var/lib/nfsboot,v4,tcp
[    0.000000] Dentry cache hash table entries: 131072 (order: 7,
524288 bytes, linear)
[    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144
bytes, linear)
[    0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[    0.000000] Memory: 945728K/1048576K available (13312K kernel code,
1910K rwdata, 4228K rodata, 1024K init, 6621K bss, 37312K reserved,
65536K cma-reserved, 196608K highmem)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2,
Nodes=1
[    0.000000] trace event string verifier disabled
[    0.000000] Running RCU self tests
[    0.000000] rcu: Hierarchical RCU implementation.
[    0.000000] rcu: 	RCU event tracing is enabled.
[    0.000000] rcu: 	RCU lockdep checking is enabled.
[    0.000000] rcu: 	RCU restricting CPUs from NR_CPUS=4 to
nr_cpu_ids=2.
[    0.000000] rcu: RCU calculated value of scheduler-enlistment delay
is 10 jiffies.
[    0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16,
nr_cpu_ids=2
[    0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[    0.000000] L2C-310 erratum 769419 enabled
[    0.000000] L2C-310 enabling early BRESP for Cortex-A9
[    0.000000] L2C-310 full line of zeros enabled for Cortex-A9
[    0.000000] L2C-310 ID prefetch enabled, offset 16 lines
[    0.000000] L2C-310 dynamic clock gating enabled, standby mode
enabled
[    0.000000] L2C-310 cache controller enabled, 16 ways, 512 kB
[    0.000000] L2C-310: CACHE_ID 0x410000c8, AUX_CTRL 0x76450001
[    0.000000] random: get_random_bytes called from
start_kernel+0x364/0x58c with crng_init=0
[    0.000000] Switching to timer-based delay loop, resolution 333ns
[    0.000001] sched_clock: 32 bits at 3000kHz, resolution 333ns, wraps
every 715827882841ns
[    0.000033] clocksource: mxc_timer1: mask: 0xffffffff max_cycles:
0xffffffff, max_idle_ns: 637086815595 ns
[    0.001600] Console: colour dummy device 80x30
[    0.001663] Lock dependency validator: Copyright (c) 2006 Red Hat,
Inc., Ingo Molnar
[    0.001685] ... MAX_LOCKDEP_SUBCLASSES:  8
[    0.001703] ... MAX_LOCK_DEPTH:          48
[    0.001721] ... MAX_LOCKDEP_KEYS:        8192
[    0.001742] ... CLASSHASH_SIZE:          4096
[    0.001760] ... MAX_LOCKDEP_ENTRIES:     32768
[    0.001777] ... MAX_LOCKDEP_CHAINS:      65536
[    0.001795] ... CHAINHASH_SIZE:          32768
[    0.001812]  memory used by lock dependency info: 4061 kB
[    0.001831]  memory used for stack traces: 2112 kB
[    0.001849]  per task-struct memory footprint: 1536 bytes
[    0.001979] Calibrating delay loop (skipped), value calculated using
timer frequency.. 6.00 BogoMIPS (lpj=30000)
[    0.002020] pid_max: default: 32768 minimum: 301
[    0.002324] Mount-cache hash table entries: 2048 (order: 1, 8192
bytes, linear)
[    0.002375] Mountpoint-cache hash table entries: 2048 (order: 1,
8192 bytes, linear)
[    0.006205] CPU: Testing write buffer coherency: ok
[    0.006386] CPU0: Spectre v2: using BPIALL workaround
[    0.007450] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.010927] Setting up static identity map for 0x10100000 -
0x10100078
[    0.011749] rcu: Hierarchical SRCU implementation.
[    0.013800] smp: Bringing up secondary CPUs ...
[    0.017275] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[    0.017300] CPU1: Spectre v2: using BPIALL workaround
[    0.018621] smp: Brought up 1 node, 2 CPUs
[    0.018660] SMP: Total of 2 processors activated (12.00 BogoMIPS).
[    0.018691] CPU: All CPU(s) started in SVC mode.
[    0.022001] devtmpfs: initialized
[    0.061678] VFP support v0.3: implementor 41 architecture 3 part 30
variant 9 rev 4
[    0.064662] clocksource: jiffies: mask: 0xffffffff max_cycles:
0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.064755] futex hash table entries: 512 (order: 3, 32768 bytes,
linear)
[    0.068750] pinctrl core: initialized pinctrl subsystem
[    0.075244] NET: Registered protocol family 16
[    0.102637] DMA: preallocated 256 KiB pool for atomic coherent
allocations
[    0.108783] thermal_sys: Registered thermal governor 'step_wise'
[    0.109361] cpuidle: using governor menu
[    0.109609] NET: Registered protocol family 42
[    0.110336] CPU identified as i.MX6DL, silicon rev 1.3
[    0.157666] vdd1p1: supplied by regulator-dummy
[    0.160738] vdd3p0: supplied by regulator-dummy
[    0.163009] vdd2p5: supplied by regulator-dummy
[    0.166539] vddpu: supplied by regulator-dummy
[    0.204081] platform 2400000.ipu: Fixing up cyclic dependency with
20e0000.iomuxc-gpr:ipu1_csi1_mux
[    0.204560] platform 2400000.ipu: Fixing up cyclic dependency with
20e0000.iomuxc-gpr:ipu1_csi0_mux
[    0.216152] No ATAGs?
[    0.216575] hw-breakpoint: found 5 (+1 reserved) breakpoint and 1
watchpoint registers.
[    0.216689] hw-breakpoint: maximum watchpoint size is 4 bytes.
[    0.218287] debugfs: Directory 'dummy-iomuxc-gpr@20e0000' with
parent 'regmap' already present!
[    0.219892] imx6dl-pinctrl 20e0000.pinctrl: initialized IMX pinctrl
driver
[    0.336589] mxs-dma 110000.dma-apbh: initialized
[    0.366282] vgaarb: loaded
[    0.368879] SCSI subsystem initialized
[    0.369795] libata version 3.00 loaded.
[    0.371044] usbcore: registered new interface driver usbfs
[    0.371350] usbcore: registered new interface driver hub
[    0.371534] usbcore: registered new device driver usb
[    0.372134] usb_phy_generic usbphynop1: supply vcc not found, using
dummy regulator
[    0.373424] usb_phy_generic usbphynop2: supply vcc not found, using
dummy regulator
[    0.380083] i2c i2c-1: IMX I2C adapter registered
[    0.381434] pps_core: LinuxPPS API ver. 1 registered
[    0.381470] pps_core: Software ver. 5.3.6 - Copyright 2005-2007
Rodolfo Giometti <giometti@linux.it>
[    0.381551] PTP clock support registered
[    0.386332] Bluetooth: Core ver 2.22
[    0.386506] NET: Registered protocol family 31
[    0.386535] Bluetooth: HCI device and connection manager initialized
[    0.386695] Bluetooth: HCI socket layer initialized
[    0.386748] Bluetooth: L2CAP socket layer initialized
[    0.386945] Bluetooth: SCO socket layer initialized
[    0.391017] clocksource: Switched to clocksource mxc_timer1
[    0.763351] VFS: Disk quotas dquot_6.6.0
[    0.763583] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096
bytes)
[    0.800699] NET: Registered protocol family 2
[    0.801465] IP idents hash table entries: 16384 (order: 5, 131072
bytes, linear)
[    0.805081] tcp_listen_portaddr_hash hash table entries: 512 (order:
2, 22528 bytes, linear)
[    0.805228] TCP established hash table entries: 8192 (order: 3,
32768 bytes, linear)
[    0.805411] TCP bind hash table entries: 8192 (order: 6, 327680
bytes, linear)
[    0.806559] TCP: Hash tables configured (established 8192 bind 8192)
[    0.807250] UDP hash table entries: 512 (order: 3, 49152 bytes,
linear)
[    0.807475] UDP-Lite hash table entries: 512 (order: 3, 49152 bytes,
linear)
[    0.808140] NET: Registered protocol family 1
[    0.811976] RPC: Registered named UNIX socket transport module.
[    0.812100] RPC: Registered udp transport module.
[    0.812129] RPC: Registered tcp transport module.
[    0.812155] RPC: Registered tcp NFSv4.1 backchannel transport
module.
[    0.814412] PCI: CLS 0 bytes, default 64
[    0.815722] armv7-pmu pmu: hw perfevents: no interrupt-affinity
property, guessing.
[    1.395389] hw perfevents: enabled with armv7_cortex_a9 PMU driver,
7 counters available
[    1.401550] Initialise system trusted keyrings
[    1.402567] workingset: timestamp_bits=30 max_order=18
bucket_order=0
[    1.431576] NFS: Registering the id_resolver key type
[    1.431773] Key type id_resolver registered
[    1.431892] Key type id_legacy registered
[    1.432131] jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
[    1.434360] fuse: init (API version 7.34)
[    1.538869] Key type asymmetric registered
[    1.539043] Asymmetric key parser 'x509' registered
[    1.539425] bounce: pool size: 64 pages
[    1.539666] io scheduler mq-deadline registered
[    1.539706] io scheduler kyber registered
[    1.546350] imx6q-pcie 1ffc000.pcie: host bridge /soc/pcie@1ffc000
ranges:
[    1.546683] imx6q-pcie 1ffc000.pcie:       IO
0x0001f80000..0x0001f8ffff -> 0x0000000000
[    1.546998] imx6q-pcie 1ffc000.pcie:      MEM
0x0001000000..0x0001efffff -> 0x0001000000
[    1.561233] imx-sdma 20ec000.sdma: Direct firmware load for
imx/sdma/sdma-imx6q.bin failed with error -2
[    1.561380] imx-sdma 20ec000.sdma: Falling back to sysfs fallback
for: imx/sdma/sdma-imx6q.bin
[    1.576583] pfuze100-regulator 1-0008: Full layer: 2, Metal layer: 1
[    1.577276] pfuze100-regulator 1-0008: FAB: 0, FIN: 0
[    1.577316] pfuze100-regulator 1-0008: pfuze100 found.
[    1.608012] 21f0000.serial: ttymxc3 at MMIO 0x21f0000 (irq = 72,
base_baud = 5000000) is a IMX
[    1.662256] imx6q-pcie 1ffc000.pcie: iATU unroll: disabled
[    1.662287] imx6q-pcie 1ffc000.pcie: Detected iATU regions: 4
outbound, 4 inbound
[    1.962914] imx6q-pcie 1ffc000.pcie: Link up
[    2.061645] imx6q-pcie 1ffc000.pcie: Link up
[    2.061667] imx6q-pcie 1ffc000.pcie: Link up, Gen2
[    2.061687] imx6q-pcie 1ffc000.pcie: Link up
[    2.062985] imx6q-pcie 1ffc000.pcie: PCI host bridge to bus 0000:00
[    2.063019] pci_bus 0000:00: root bus resource [bus 00-ff]
[    2.063044] pci_bus 0000:00: root bus resource [io  0x0000-0xffff]
[    2.063067] pci_bus 0000:00: root bus resource [mem 0x01000000-
0x01efffff]
[    2.063496] pci 0000:00:00.0: [16c3:abcd] type 01 class 0x060400
[    2.063572] pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x000fffff]
[    2.063637] pci 0000:00:00.0: reg 0x38: [mem 0x00000000-0x0000ffff
pref]
[    2.063745] pci 0000:00:00.0: Limiting cfg_size to 512
[    2.064120] pci 0000:00:00.0: supports D1
[    2.064138] pci 0000:00:00.0: PME# supported from D0 D1 D3hot D3cold
[    2.068753] PCI: bus0: Fast back to back transfers disabled
[    2.069419] pci 0000:01:00.0: [17cb:0306] type 00 class 0xff0000
[    2.069550] pci 0000:01:00.0: reg 0x10: [mem 0x00000000-0x00000fff
64bit]
[    2.069633] pci 0000:01:00.0: reg 0x18: [mem 0x00000000-0x00000fff
64bit]
[    2.070265] pci 0000:01:00.0: PME# supported from D0 D3hot D3cold
[    2.070437] pci 0000:01:00.0: 4.000 Gb/s available PCIe bandwidth,
limited by 5.0 GT/s PCIe x1 link at 0000:00:00.0 (capable of 31.506
Gb/s with 16.0 GT/s PCIe x2 link)
[    2.074462] PCI: bus1: Fast back to back transfers disabled
[    2.076179] printk: console [ttymxc3] enabled
[    2.079173] pci 0000:00:00.0: BAR 0: assigned [mem 0x01000000-
0x010fffff]
[    2.702298] pci 0000:00:00.0: BAR 8: assigned [mem 0x01100000-
0x011fffff]
[    2.709133] pci 0000:00:00.0: BAR 6: assigned [mem 0x01200000-
0x0120ffff pref]
[    2.716589] pci 0000:01:00.0: BAR 0: assigned [mem 0x01100000-
0x01100fff 64bit]
[    2.724097] pci 0000:01:00.0: BAR 2: assigned [mem 0x01101000-
0x01101fff 64bit]
[    2.725446] etnaviv etnaviv: bound 130000.gpu (ops gpu_ops)
[    2.731578] pci 0000:00:00.0: PCI bridge to [bus 01-ff]
[    2.738177] etnaviv etnaviv: bound 134000.gpu (ops gpu_ops)
[    2.742511] pci 0000:00:00.0:   bridge window [mem 0x01100000-
0x011fffff]
[    2.748092] etnaviv-gpu 130000.gpu: model: GC880, revision: 5106
[    2.755855] mhi-pci-generic 0000:01:00.0: MHI PCI device found:
qcom-sdx55m
[    2.768315] mhi-pci-generic 0000:01:00.0: BAR 0: assigned [mem
0x01100000-0x01100fff 64bit]
[    2.769015] etnaviv-gpu 134000.gpu: model: GC320, revision: 5007
[    2.776912] mhi-pci-generic 0000:01:00.0: enabling device (0140 ->
0142)
[    2.786483] [drm] Initialized etnaviv 1.3.0 20151214 for etnaviv on
minor 0
[    2.801751] mhi mhi0: Requested to power ON
[    2.808489] mhi mhi0: Power on setup success
[    2.810346] imx-drm display-subsystem: bound imx-ipuv3-crtc.2 (ops
ipu_crtc_ops)
[    2.821931] imx-drm display-subsystem: bound imx-ipuv3-crtc.3 (ops
ipu_crtc_ops)
[    2.831489] [drm] Initialized imx-drm 1.0.0 20120507 for display-
subsystem on minor 1
[    2.839891] imx-ipuv3 2400000.ipu: IPUv3H probed
[    2.891577] brd: module loaded
[    2.939853] loop: module loaded
[    2.951691] spi@0 enforce active low on chipselect handle
[    2.957268] spi@1 enforce active low on chipselect handle
[    2.972776] spi@0 enforce active low on chipselect handle
[    2.978398] spi@1 enforce active low on chipselect handle
[    2.994315] libphy: Fixed MDIO Bus: probed
[    3.000604] CAN device driver interface
[    3.010081] pps pps0: new PPS source ptp0
[    3.028687] libphy: fec_enet_mii_bus: probed
[    3.036072] fec 2188000.ethernet eth0: registered PHC device 0
[    3.044184] PPP generic driver version 2.4.2
[    3.049501] PPP BSD Compression module registered
[    3.054353] PPP Deflate Compression module registered
[    3.059991] usbcore: registered new interface driver r8152
[    3.065701] usbcore: registered new interface driver lan78xx
[    3.071583] usbcore: registered new interface driver cdc_ether
[    3.077562] usbcore: registered new interface driver cdc_eem
[    3.083500] usbcore: registered new interface driver smsc95xx
[    3.089413] usbcore: registered new interface driver net1080
[    3.095293] usbcore: registered new interface driver cdc_subset
[    3.101424] usbcore: registered new interface driver zaurus
[    3.107144] usbcore: registered new interface driver MOSCHIP usb-
ethernet driver
[    3.114840] usbcore: registered new interface driver sierra_net
[    3.121028] usbcore: registered new interface driver cdc_ncm
[    3.126862] usbcore: registered new interface driver qmi_wwan
[    3.132835] usbcore: registered new interface driver cdc_mbim
[    3.138607] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI)
Driver
[    3.145209] ehci-pci: EHCI PCI platform driver
[    3.149951] usbcore: registered new interface driver cdc_wdm
[    3.155907] usbcore: registered new interface driver usb-storage
[    3.162458] usbcore: registered new interface driver
usbserial_generic
[    3.169462] usbserial: USB Serial support registered for generic
[    3.175898] usbcore: registered new interface driver ftdi_sio
[    3.181889] usbserial: USB Serial support registered for FTDI USB
Serial Device
[    3.189345] usbcore: registered new interface driver option
[    3.195086] usbserial: USB Serial support registered for GSM modem
(1-port)
[    3.202258] usbcore: registered new interface driver qcserial
[    3.208119] usbserial: USB Serial support registered for Qualcomm
USB modem
[    3.233880] snvs_rtc 20cc000.snvs:snvs-rtc-lp: registered as rtc0
[    3.240101] snvs_rtc 20cc000.snvs:snvs-rtc-lp: setting system clock
to 1970-01-01T00:00:00 UTC (0)
[    3.249753] i2c /dev entries driver
[    3.268851] sdhci: Secure Digital Host Controller Interface driver
[    3.275192] sdhci: Copyright(c) Pierre Ossman
[    3.279581] sdhci-pltfm: SDHCI platform and OF driver helper
[    3.289992] caam 2100000.crypto: Entropy delay = 3200
[    3.331171] mmc1: SDHCI controller on 2194000.mmc [2194000.mmc]
using ADMA
[    3.338991] mmc2: SDHCI controller on 2198000.mmc [2198000.mmc]
using ADMA
[    3.356018] caam 2100000.crypto: Instantiated RNG4 SH0
[    3.416778] caam 2100000.crypto: Instantiated RNG4 SH1
[    3.422116] caam 2100000.crypto: device ID = 0x0a16010000000100 (Era
4)
[    3.428768] caam 2100000.crypto: job rings = 2, qi = 0
[    3.453774] mmc3: SDHCI controller on 219c000.mmc [219c000.mmc]
using ADMA
[    3.462624] mmc2: new DDR MMC card at address 0001
[    3.473278] mmcblk2: mmc2:0001 00016G 14.6 GiB 
[    3.480232] mmcblk2boot0: mmc2:0001 00016G 4.00 MiB 
[    3.481917] caam algorithms registered in /proc/crypto
[    3.487898] mmcblk2boot1: mmc2:0001 00016G 4.00 MiB 
[    3.498687] caam 2100000.crypto: registering rng-caam
[    3.499061] mmcblk2rpmb: mmc2:0001 00016G 4.00 MiB, chardev (244:0)
[    3.524714] usbcore: registered new interface driver usbhid
[    3.530329] usbhid: USB HID core driver
[    3.543229] Initializing XFRM netlink socket
[    3.549810] NET: Registered protocol family 10
[    3.551444] mmc3: new DDR MMC card at address 0001
[    3.563454] Segment Routing with IPv6
[    3.568381] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
[    3.572261] mmcblk3: mmc3:0001 E0004G 3.64 GiB 
[    3.577406] NET: Registered protocol family 17
[    3.579848] mmcblk3boot0: mmc3:0001 E0004G 4.00 MiB 
[    3.583595] NET: Registered protocol family 15
[    3.589477] mmcblk3boot1: mmc3:0001 E0004G 4.00 MiB 
[    3.593057] can: controller area network core
[    3.593470] NET: Registered protocol family 29
[    3.603122] mmcblk3rpmb: mmc3:0001 E0004G 4.00 MiB, chardev (244:1)
[    3.607179] can: raw protocol
[    3.617067] can: broadcast manager protocol
[    3.621569] can: netlink gateway - max_hops=1
[    3.624307]  mmcblk3: p1 p2
[    3.626619] Key type dns_resolver registered
[    3.633579] random: fast init done
[    3.643820] Registering SWP/SWPB emulation handler
[    3.649438] Loading compiled-in X.509 certificates
[    3.748476] random: crng init done
[    3.821484] vddarm: supplied by SW1AB
[    3.828699] vddsoc: supplied by SW1C
[    4.431354] mhi mhi0: Wait for device to enter SBL or Mission mode
[    4.453212] mxs_phy 20c9000.usbphy: Data pin can't make good
contact.
[    4.469544] ci_hdrc ci_hdrc.1: EHCI Host Controller
[    4.475134] ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus
number 1
[    4.511146] ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00
[    4.518600] usb usb1: New USB device found, idVendor=1d6b,
idProduct=0002, bcdDevice= 5.13
[    4.527211] usb usb1: New USB device strings: Mfr=3, Product=2,
SerialNumber=1
[    4.534557] usb usb1: Product: EHCI Host Controller
[    4.539469] usb usb1: Manufacturer: Linux 5.13.6 ehci_hcd
[    4.544979] usb usb1: SerialNumber: ci_hdrc.1
[    4.556250] hub 1-0:1.0: USB hub found
[    4.560622] hub 1-0:1.0: 1 port detected
[    4.590745] imx_thermal 20c8000.anatop:tempmon: Industrial CPU
temperature grade - max:105C critical:100C passive:95C
[    4.861299] usb 1-1: new high-speed USB device number 2 using
ci_hdrc
[    5.064624] usb 1-1: New USB device found, idVendor=04b4,
idProduct=bd30, bcdDevice= 1.00
[    5.073441] usb 1-1: New USB device strings: Mfr=0, Product=0,
SerialNumber=0
[    5.087382] hub 1-1:1.0: USB hub found
[    5.091740] hub 1-1:1.0: 2 ports detected
[    5.511390] usb 1-1.1: new high-speed USB device number 3 using
ci_hdrc
[    5.664449] usb 1-1.1: New USB device found, idVendor=04b4,
idProduct=bd29, bcdDevice= 0.01
[    5.673182] usb 1-1.1: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[    5.680706] usb 1-1.1: Product: Remote Download Wireless Adapter
[    5.687033] usb 1-1.1: Manufacturer: Cypress Semiconductor Corp.
[    5.693268] usb 1-1.1: SerialNumber: 000000000001
[    5.801394] usb 1-1.2: new high-speed USB device number 4 using
ci_hdrc
[    5.955345] usb 1-1.2: New USB device found, idVendor=04b4,
idProduct=640c, bcdDevice= 1.12
[    5.964169] usb 1-1.2: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[    5.971823] usb 1-1.2: Product: BCM2045A0
[    5.975900] usb 1-1.2: Manufacturer: Cypress Semiconductor Corp.
[    5.982131] usb 1-1.2: SerialNumber: C0EE408051DF
[   11.355278] mhi-pci-generic 0000:01:00.0: failed to power up MHI
controller
[   11.388118] mhi-pci-generic: probe of 0000:01:00.0 failed with error
-110
[   11.486711] Micrel KSZ9031 Gigabit PHY 2188000.ethernet-1:00:
attached PHY driver (mii_bus:phy_addr=2188000.ethernet-1:00, irq=POLL)
[   13.593551] fec 2188000.ethernet eth0: Link is Up - 100Mbps/Full -
flow control rx/tx
[   13.603022] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   13.631198] IP-Config: Guessing netmask 255.0.0.0
[   13.635979] IP-Config: Complete:
[   13.639253]      device=eth0, hwaddr=00:01:02:03:04:05,
ipaddr=10.0.0.2, mask=255.0.0.0, gw=255.255.255.255
[   13.650225]      host=10.0.0.2, domain=, nis-domain=(none)
[   13.655876]      bootserver=255.255.255.0, rootserver=10.0.0.1,
rootpath=
[   13.658492] cfg80211: Loading compiled-in X.509 certificates for
regulatory database
[   13.682378] cfg80211: Loaded X.509 cert 'sforshee:
00b28ddf47aef9cea7'
[   13.690228] platform regulatory.0: Direct firmware load for
regulatory.db failed with error -2
[   13.699498] platform regulatory.0: Falling back to sysfs fallback
for: regulatory.db
[   13.793260] VFS: Mounted root (nfs4 filesystem) on device 0:18.
[   13.800397] devtmpfs: mounted
[   13.806233] Freeing unused kernel memory: 1024K
[   13.852467] Run /sbin/init as init process
[   13.856611]   with arguments:
[   13.859598]     /sbin/init
[   13.862440]   with environment:
[   13.865608]     HOME=/
[   13.867988]     TERM=linux
[   15.234158] udevd[194]: starting version 3.2.8
[   15.596370] udevd[195]: starting eudev-3.2.8
[   16.670814] imx-sdma 20ec000.sdma: loaded firmware 3.5
[   17.437497] brcmfmac: brcmf_fw_alloc_request: using
brcm/brcmfmac4373 for chip BCM4373/0
[   17.504203] usbcore: registered new interface driver brcmfmac
[   18.055918] usb 1-1.1: USB disconnect, device number 3
[   18.130997] brcmfmac: brcmf_usb_dl_cmd: usb_submit_urb failed -19
[   18.471584] usb 1-1.1: new high-speed USB device number 5 using
ci_hdrc
[   18.586990] usbcore: registered new interface driver btusb
[   18.634846] usb 1-1.1: New USB device found, idVendor=04b4,
idProduct=0bdc, bcdDevice= 0.01
[   18.643568] usb 1-1.1: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[   18.651053] usb 1-1.1: Product: Cypress USB 802.11 Wireless Adapter
[   18.657354] usb 1-1.1: Manufacturer: Cypress Semiconductor Corp.
[   18.663477] usb 1-1.1: SerialNumber: 000000000001
[   18.687763] brcmfmac: brcmf_fw_alloc_request: using
brcm/brcmfmac4373 for chip BCM4373/0
[   18.708346] brcmfmac: brcmf_c_preinit_dcmds: Firmware: BCM4373/0
wl0: Dec 20 2020 19:46:31 version 13.10.246.247 (fb87df5 CY) FWID 01-
c041ac2e
[   43.992845] usb_otg_vbus: disabling
[   43.996645] SW4: disabling
[   46.813340] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   46.820435] Bluetooth: BNEP socket layer initialized
root@target:~# 
Terminating...
Skipping tty reset...
Thanks for using picocom


> 
> Regards,
> Loic

-- 
Thomas Perrot, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com


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