Trying 192.168.56.21... Connected to conserv1. Escape character is '^]'. ser2net port telnet,3001 device serialdev, /dev/serial/by-path/platform-fd500000.pcie-pci-0000:01:00.0-usb-0:1.2.1.4:1.0-port0, 115200n81, local=false [] (Debian GNU/Linux) U-Boot SPL 2015.10-00061-g68849f9 (Jan 08 2016 - 17:01:43) U-Boot 2015.10-00061-g68849f9 (Jan 08 2016 - 17:01:43 +0100) CPU: Freescale i.MX6Q rev1.2 at 792 MHz Reset cause: POR Board: UDOO Quad DRAM: 1 GiB MMC: FSL_SDHC: 0 *** Warning - bad CRC, using default environment No panel detected: default to HDMI Display: HDMI (1024x768) In: serial Out: serial Err: serial Net: using phy at 6 FEC [PRIME] Hit any key to stop autoboot: 3  0 => setenv autoload no setenv autoload no => setenv initrd_high 0xffffffff setenv initrd_high 0xffffffff => setenv fdt_high 0xffffffff setenv fdt_high 0xffffffff => dhcp dhcp FEC Waiting for PHY auto negotiation to complete.... done BOOTP broadcast 1 BOOTP broadcast 2 BOOTP broadcast 3 BOOTP broadcast 4 BOOTP broadcast 5 *** Unhandled DHCP Option in OFFER/ACK: 42 *** Unhandled DHCP Option in OFFER/ACK: 42 DHCP client bound to address 192.168.56.31 (3805 ms) => setenv serverip 192.168.56.75 setenv serverip 192.168.56.75 => tftp 0x12000000 206788/tftp-deploy-ikwb0aae/kernel/zImage tftp 0x12000000 206788/tftp-deploy-ikwb0aae/kernel/zImage Using FEC device TFTP from server 192.168.56.75; our IP address is 192.168.56.31 Filename '206788/tftp-deploy-ikwb0aae/kernel/zImage'. Load address: 0x12000000 Loading: *################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# #### 9.9 MiB/s done Bytes transferred = 10553888 (a10a20 hex) => tftp 0x13000000 206788/tftp-deploy-ikwb0aae/ramdisk/ramdisk.cpio.gz.uboot tftp 0x13000000 206788/tftp-deploy-ikwb0aae/ramdisk/ramdisk.cpio.gz.uboot Using FEC device TFTP from server 192.168.56.75; our IP address is 192.168.56.31 Filename '206788/tftp-deploy-ikwb0aae/ramdisk/ramdisk.cpio.gz.uboot'. Load address: 0x13000000 Loading: *################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ########################################### 8.9 MiB/s done Bytes transferred = 10172552 (9b3888 hex) => setenv initrd_size ${filesize} setenv initrd_size ${filesize} => tftp 0x18000000 206788/tftp-deploy-ikwb0aae/dtb/imx6q-udoo.dtb tftp 0x18000000 206788/tftp-deploy-ikwb0aae/dtb/imx6q-udoo.dtb Using FEC device TFTP from server 192.168.56.75; our IP address is 192.168.56.31 Filename '206788/tftp-deploy-ikwb0aae/dtb/imx6q-udoo.dtb'. Load address: 0x18000000 Loading: *### 7 MiB/s done Bytes transferred = 36444 (8e5c hex) => setenv bootargs 'console=ttymxc1,115200n8 root=/dev/ram0 console_msg_format=syslog earlycon ip=dhcp' setenv bootargs 'console=ttymxc1,115200n8 root=/dev/ram0 console_msg_format=syslog earlycon ip=dhcp' => bootz 0x12000000 0x13000000 0x18000000 bootz 0x12000000 0x13000000 0x18000000 Kernel image @ 0x12000000 [ 0x000000 - 0xa10a20 ] ## Loading init Ramdisk from Legacy Image at 13000000 ... Image Name: Image Type: ARM Linux RAMDisk Image (uncompressed) Data Size: 10172488 Bytes = 9.7 MiB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK ## Flattened Device Tree blob at 18000000 Booting using the fdt blob at 0x18000000 Using Device Tree in place at 18000000, end 1800be5b Starting kernel ... [ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 5.10.175-cip29-rt12 (KernelCI@build-j1227317-arm-gcc-10-imx-v6-v7-defconfig-pvkj5) (arm-linux-gnueabihf-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2) #1 SMP Wed Mar 22 12:40:39 UTC 2023 [ 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: Udoo i.MX6 Quad Board [ 0.000000] earlycon: ec_imx21 at MMIO 0x021e8000 (options '') [ 0.000000] printk: bootconsole [ec_imx21] enabled [ 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 16 pages/cpu s35820 r8192 d21524 u65536 [ 0.000000] pcpu-alloc: s35820 r8192 d21524 u65536 alloc=16*4096 [ 0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3 [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 260608 [ 0.000000] Kernel command line: console=ttymxc1,115200n8 root=/dev/ram0 console_msg_format=syslog earlycon ip=dhcp <6>[ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes, linear) <6>[ 0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes, linear) <6>[ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off <6>[ 0.000000] Memory: 933488K/1048576K available (14336K kernel code, 2046K rwdata, 4852K rodata, 1024K init, 6651K bss, 49552K reserved, 65536K cma-reserved, 196608K highmem) <6>[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1 <6>[ 0.000000] Running RCU self tests <6>[ 0.000000] rcu: Hierarchical RCU implementation. <6>[ 0.000000] rcu: RCU event tracing is enabled. <6>[ 0.000000] rcu: RCU lockdep checking is enabled. <6>[ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. <6>[ 0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16 <6>[ 0.000000] L2C-310 errata 752271 769419 enabled <6>[ 0.000000] L2C-310 enabling early BRESP for Cortex-A9 <6>[ 0.000000] L2C-310 full line of zeros enabled for Cortex-A9 <6>[ 0.000000] L2C-310 ID prefetch enabled, offset 16 lines <6>[ 0.000000] L2C-310 dynamic clock gating enabled, standby mode enabled <6>[ 0.000000] L2C-310 cache controller enabled, 16 ways, 1024 kB <6>[ 0.000000] L2C-310: CACHE_ID 0x410000c7, AUX_CTRL 0x76470001 <6>[ 0.000000] Switching to timer-based delay loop, resolution 333ns <6>[ 0.000002] sched_clock: 32 bits at 3000kHz, resolution 333ns, wraps every 715827882841ns <6>[ 0.008438] clocksource: mxc_timer1: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 637086815595 ns <6>[ 0.020189] Console: colour dummy device 80x30 <4>[ 0.023053] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar <4>[ 0.031077] ... MAX_LOCKDEP_SUBCLASSES: 8 <4>[ 0.035401] ... MAX_LOCK_DEPTH: 48 <4>[ 0.039857] ... MAX_LOCKDEP_KEYS: 8192 <4>[ 0.044449] ... CLASSHASH_SIZE: 4096 <4>[ 0.049081] ... MAX_LOCKDEP_ENTRIES: 32768 <4>[ 0.053758] ... MAX_LOCKDEP_CHAINS: 65536 <4>[ 0.058473] ... CHAINHASH_SIZE: 32768 <4>[ 0.063154] memory used by lock dependency info: 4061 kB <4>[ 0.068826] memory used for stack traces: 2112 kB <4>[ 0.073855] per task-struct memory footprint: 1536 bytes <6>[ 0.079597] Calibrating delay loop (skipped), value calculated using timer frequency.. 6.00 BogoMIPS (lpj=30000) <6>[ 0.089977] pid_max: default: 32768 minimum: 301 <6>[ 0.095177] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes, linear) <6>[ 0.102430] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes, linear) <6>[ 0.113976] CPU: Testing write buffer coherency: ok <6>[ 0.116391] CPU0: Spectre v2: using BPIALL workaround <6>[ 0.122730] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 <6>[ 0.130609] Setting up static identity map for 0x10100000 - 0x10100078 <6>[ 0.135316] rcu: Hierarchical SRCU implementation. <6>[ 0.142210] smp: Bringing up secondary CPUs ... <6>[ 0.147845] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001 <6>[ 0.150927] CPU1: Spectre v2: using BPIALL workaround <6>[ 0.160254] CPU2: thread -1, cpu 2, socket 0, mpidr 80000002 <6>[ 0.163335] CPU2: Spectre v2: using BPIALL workaround <6>[ 0.172037] CPU3: thread -1, cpu 3, socket 0, mpidr 80000003 <6>[ 0.175119] CPU3: Spectre v2: using BPIALL workaround <6>[ 0.181173] smp: Brought up 1 node, 4 CPUs <6>[ 0.184776] SMP: Total of 4 processors activated (24.00 BogoMIPS). <6>[ 0.191375] CPU: All CPU(s) started in SVC mode. <6>[ 0.199110] devtmpfs: initialized <6>[ 0.243102] VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4 <6>[ 0.251225] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns <6>[ 0.258616] futex hash table entries: 1024 (order: 4, 65536 bytes, linear) <6>[ 0.269711] pinctrl core: initialized pinctrl subsystem <6>[ 0.279156] NET: Registered protocol family 16 <6>[ 0.326242] DMA: preallocated 256 KiB pool for atomic coherent allocations <6>[ 0.337078] thermal_sys: Registered thermal governor 'step_wise' <6>[ 0.337600] cpuidle: using governor menu <6>[ 0.345311] CPU identified as i.MX6Q, silicon rev 1.2 <6>[ 0.703993] vdd1p1: supplied by regulator-dummy <6>[ 0.726789] vdd3p0: supplied by regulator-dummy <6>[ 0.748693] vdd2p5: supplied by regulator-dummy <6>[ 0.770485] vddarm: supplied by regulator-dummy <6>[ 0.793348] vddpu: supplied by regulator-dummy <6>[ 0.814413] vddsoc: supplied by regulator-dummy <6>[ 1.420949] No ATAGs? <6>[ 1.421539] hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint registers. <6>[ 1.428974] hw-breakpoint: maximum watchpoint size is 4 bytes. <6>[ 1.440704] imx6q-pinctrl 20e0000.pinctrl: initialized IMX pinctrl driver <6>[ 1.574746] vgaarb: loaded <5>[ 1.577679] SCSI subsystem initialized <7>[ 1.579640] libata version 3.00 loaded. <6>[ 1.584172] usbcore: registered new interface driver usbfs <6>[ 1.589083] usbcore: registered new interface driver hub <6>[ 1.594440] usbcore: registered new device driver usb <4>[ 1.600227] usb_phy_generic usbphynop1: supply vcc not found, using dummy regulator <4>[ 1.608496] usb_phy_generic usbphynop1: dummy supplies not allowed for exclusive requests <4>[ 1.616457] usb_phy_generic usbphynop2: supply vcc not found, using dummy regulator <4>[ 1.624637] usb_phy_generic usbphynop2: dummy supplies not allowed for exclusive requests <6>[ 1.636746] i2c i2c-1: IMX I2C adapter registered <6>[ 1.643280] i2c i2c-2: IMX I2C adapter registered <6>[ 1.646947] mc: Linux media interface: v0.10 <6>[ 1.650068] videodev: Linux video capture interface: v2.00 <6>[ 1.656422] pps_core: LinuxPPS API ver. 1 registered <6>[ 1.660887] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <6>[ 1.670400] PTP clock support registered <6>[ 1.676535] Advanced Linux Sound Architecture Driver Initialized. <6>[ 1.685657] Bluetooth: Core ver 2.22 <6>[ 1.686831] NET: Registered protocol family 31 <6>[ 1.691347] Bluetooth: HCI device and connection manager initialized <6>[ 1.698110] Bluetooth: HCI socket layer initialized <6>[ 1.703115] Bluetooth: L2CAP socket layer initialized <6>[ 1.708663] Bluetooth: SCO socket layer initialized <6>[ 1.716336] clocksource: Switched to clocksource mxc_timer1 <5>[ 3.181853] VFS: Disk quotas dquot_6.6.0 <6>[ 3.183413] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) <6>[ 3.232159] NET: Registered protocol family 2 <6>[ 3.234502] IP idents hash table entries: 16384 (order: 5, 131072 bytes, linear) <6>[ 3.244935] tcp_listen_portaddr_hash hash table entries: 512 (order: 2, 22528 bytes, linear) <6>[ 3.251469] TCP established hash table entries: 8192 (order: 3, 32768 bytes, linear) <6>[ 3.259106] TCP bind hash table entries: 8192 (order: 6, 327680 bytes, linear) <6>[ 3.267737] TCP: Hash tables configured (established 8192 bind 8192) <6>[ 3.273788] UDP hash table entries: 512 (order: 3, 49152 bytes, linear) <6>[ 3.280123] UDP-Lite hash table entries: 512 (order: 3, 49152 bytes, linear) <6>[ 3.287892] NET: Registered protocol family 1 <6>[ 3.294533] RPC: Registered named UNIX socket transport module. <6>[ 3.298010] RPC: Registered udp transport module. <6>[ 3.302860] RPC: Registered tcp transport module. <6>[ 3.307971] RPC: Registered tcp NFSv4.1 backchannel transport module. <6>[ 3.316618] PCI: CLS 0 bytes, default 64 <6>[ 3.320196] Trying to unpack rootfs image as initramfs... <6>[ 4.535911] Freeing initrd memory: 9936K <4>[ 4.539274] hw perfevents: no interrupt-affinity property for /pmu, guessing. <6>[ 4.545819] hw perfevents: enabled with armv7_cortex_a9 PMU driver, 7 counters available <5>[ 4.561405] Initialise system trusted keyrings <6>[ 4.564184] workingset: timestamp_bits=30 max_order=18 bucket_order=0 <5>[ 4.600053] NFS: Registering the id_resolver key type <5>[ 4.602694] Key type id_resolver registered <5>[ 4.607054] Key type id_legacy registered <6>[ 4.611648] nfs4filelayout_init: NFSv4 File Layout Driver Registering... <6>[ 4.618342] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering... <6>[ 4.626041] jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc. <6>[ 4.634701] fuse: init (API version 7.32) <5>[ 4.734860] Key type asymmetric registered <5>[ 4.736586] Asymmetric key parser 'x509' registered <6>[ 4.741904] bounce: pool size: 64 pages <6>[ 4.745718] io scheduler mq-deadline registered <6>[ 4.750444] io scheduler kyber registered <4>[ 4.780787] imx-sdma 20ec000.sdma: Direct firmware load for imx/sdma/sdma-imx6q.bin failed with error -2 <4>[ 4.787811] imx-sdma 20ec000.sdma: Falling back to sysfs fallback for: imx/sdma/sdma-imx6q.bin <6>[ 4.802615] mxs-dma 110000.dma-apbh: initialized <6>[ 4.820549] 21e8000.serial: ttymxc1 at MMIO 0x21e8000 (irq = 70, base_baud = 5000000) is a IMX <6>[ 4.827493] printk: console [ttymxc1] enabled <6>[ 4.831229] printk: bootconsole [ec_imx21] disabled <6>[ 4.827493] printk: console [ttymxc1] enabled <6>[ 4.831229] printk: bootconsole [ec_imx21] disabled <6>[ 4.841850] 21f0000.serial: ttymxc3 at MMIO 0x21f0000 (irq = 71, base_baud = 5000000) is a IMX <6>[ 4.882331] etnaviv etnaviv: bound 130000.gpu (ops gpu_ops) <6>[ 4.883324] etnaviv etnaviv: bound 134000.gpu (ops gpu_ops) <6>[ 4.884368] etnaviv etnaviv: bound 2204000.gpu (ops gpu_ops) <6>[ 4.884395] etnaviv-gpu 130000.gpu: model: GC2000, revision: 5108 <6>[ 4.885171] etnaviv-gpu 134000.gpu: model: GC320, revision: 5007 <6>[ 4.885406] etnaviv-gpu 2204000.gpu: model: GC355, revision: 1215 <6>[ 4.885422] etnaviv-gpu 2204000.gpu: Ignoring GPU with VG and FE2.0 <6>[ 4.888867] [drm] Initialized etnaviv 1.3.0 20151214 for etnaviv on minor 0 <6>[ 4.895500] imx-ipuv3 2400000.ipu: IPUv3H probed <6>[ 4.904319] imx-drm display-subsystem: bound imx-ipuv3-crtc.2 (ops ipu_crtc_ops) <6>[ 4.904855] imx-drm display-subsystem: bound imx-ipuv3-crtc.3 (ops ipu_crtc_ops) <6>[ 4.905378] imx-drm display-subsystem: bound imx-ipuv3-crtc.6 (ops ipu_crtc_ops) <6>[ 4.905877] imx-drm display-subsystem: bound imx-ipuv3-crtc.7 (ops ipu_crtc_ops) <6>[ 4.907350] dwhdmi-imx 120000.hdmi: Detected HDMI TX controller v1.30a with HDCP (DWC HDMI 3D TX PHY) <6>[ 4.915212] imx-drm display-subsystem: bound 120000.hdmi (ops dw_hdmi_imx_ops) <6>[ 4.919051] [drm] Initialized imx-drm 1.0.0 20120507 for display-subsystem on minor 1 <6>[ 4.920962] imx-drm display-subsystem: [drm] Cannot find any crtc or sizes <6>[ 4.922354] imx-ipuv3 2800000.ipu: IPUv3H probed <6>[ 4.964348] brd: module loaded <6>[ 5.016798] loop: module loaded <6>[ 5.019667] ahci-imx 2200000.sata: fsl,transmit-level-mV not specified, using 00000024 <6>[ 5.019687] ahci-imx 2200000.sata: fsl,transmit-boost-mdB not specified, using 00000480 <6>[ 5.019699] ahci-imx 2200000.sata: fsl,transmit-atten-16ths not specified, using 00002000 <6>[ 5.019711] ahci-imx 2200000.sata: fsl,receive-eq-mdB not specified, using 05000000 <4>[ 5.019960] ahci-imx 2200000.sata: supply ahci not found, using dummy regulator <4>[ 5.020678] ahci-imx 2200000.sata: supply phy not found, using dummy regulator <4>[ 5.021077] ahci-imx 2200000.sata: supply target not found, using dummy regulator <6>[ 5.024774] ahci-imx 2200000.sata: SSS flag set, parallel bus scan disabled <6>[ 5.024806] ahci-imx 2200000.sata: AHCI 0001.0300 32 slots 1 ports 3 Gbps 0x1 impl platform mode <6>[ 5.024824] ahci-imx 2200000.sata: flags: ncq sntf stag pm led clo only pmp pio slum part ccc apst <6>[ 5.030169] scsi host0: ahci-imx <6>[ 5.032347] ata1: SATA max UDMA/133 mmio [mem 0x02200000-0x02203fff] port 0x100 irq 74 <6>[ 5.047246] CAN device driver interface <6>[ 5.052473] pps pps0: new PPS source ptp0 <6>[ 5.101269] fec 2188000.ethernet eth0: registered PHC device 0 <6>[ 5.104262] usbcore: registered new interface driver r8152 <6>[ 5.104440] usbcore: registered new interface driver lan78xx <6>[ 5.104634] usbcore: registered new interface driver asix <6>[ 5.104768] usbcore: registered new interface driver ax88179_178a <6>[ 5.104904] usbcore: registered new interface driver cdc_ether <6>[ 5.105103] usbcore: registered new interface driver smsc95xx <6>[ 5.105252] usbcore: registered new interface driver net1080 <6>[ 5.105393] usbcore: registered new interface driver cdc_subset <6>[ 5.105525] usbcore: registered new interface driver zaurus <6>[ 5.105656] usbcore: registered new interface driver MOSCHIP usb-ethernet driver <6>[ 5.105883] usbcore: registered new interface driver cdc_ncm <6>[ 5.105895] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver <6>[ 5.105907] ehci-pci: EHCI PCI platform driver <6>[ 5.106047] ehci-mxc: Freescale On-Chip EHCI Host driver <6>[ 5.107350] usbcore: registered new interface driver usb-storage <6>[ 5.130864] snvs_rtc 20cc000.snvs:snvs-rtc-lp: registered as rtc0 <6>[ 5.130968] snvs_rtc 20cc000.snvs:snvs-rtc-lp: setting system clock to 1970-01-01T00:00:00 UTC (0) <6>[ 5.131502] i2c /dev entries driver <6>[ 5.147483] Bluetooth: HCI UART driver ver 2.3 <6>[ 5.147498] Bluetooth: HCI UART protocol H4 registered <6>[ 5.147603] Bluetooth: HCI UART protocol LL registered <6>[ 5.151382] sdhci: Secure Digital Host Controller Interface driver <6>[ 5.151388] sdhci: Copyright(c) Pierre Ossman <6>[ 5.151396] sdhci-pltfm: SDHCI platform and OF driver helper <6>[ 5.155097] sdhci-esdhc-imx 2198000.mmc: Got CD GPIO <6>[ 5.155809] caam 2100000.crypto: Entropy delay = 3200 <6>[ 5.194136] mmc2: SDHCI controller on 2198000.mmc [2198000.mmc] using ADMA <6>[ 5.216606] caam 2100000.crypto: Instantiated RNG4 SH0 <6>[ 5.277368] caam 2100000.crypto: Instantiated RNG4 SH1 <6>[ 5.277482] caam 2100000.crypto: device ID = 0x0a16010000000000 (Era 4) <6>[ 5.277496] caam 2100000.crypto: job rings = 2, qi = 0 <6>[ 5.311108] caam algorithms registered in /proc/crypto <4>[ 5.311869] mmc2: host does not support reading read-only switch, assuming write-enable <6>[ 5.314289] mmc2: new high speed SDXC card at address 59b4 <6>[ 5.317207] caam 2100000.crypto: registering rng-caam <6>[ 5.318905] mmcblk2: mmc2:59b4 SD128 119 GiB <6>[ 5.328986] mmcblk2: p1 p2 <6>[ 5.359397] ata1: SATA link down (SStatus 0 SControl 300) <6>[ 5.359780] ahci-imx 2200000.sata: no device found, disabling link. <6>[ 5.359792] ahci-imx 2200000.sata: pass ahci_imx..hotplug=1 to enable hotplug <5>[ 5.460232] random: crng init done <6>[ 5.464882] usbcore: registered new interface driver usbhid <6>[ 5.464894] usbhid: USB HID core driver <6>[ 5.469706] ipu1_csi0: Registered ipu1_csi0 capture as /dev/video0 <6>[ 5.471310] ipu1_ic_prpenc: Registered ipu1_ic_prpenc capture as /dev/video1 <6>[ 5.472237] ipu1_ic_prpvf: Registered ipu1_ic_prpvf capture as /dev/video2 <6>[ 5.473838] ipu1_csi1: Registered ipu1_csi1 capture as /dev/video3 <6>[ 5.475199] ipu2_csi0: Registered ipu2_csi0 capture as /dev/video4 <6>[ 5.476135] ipu2_ic_prpenc: Registered ipu2_ic_prpenc capture as /dev/video5 <6>[ 5.476956] ipu2_ic_prpvf: Registered ipu2_ic_prpvf capture as /dev/video6 <6>[ 5.478204] ipu2_csi1: Registered ipu2_csi1 capture as /dev/video7 <4>[ 5.505621] fsl-ssi-dai 2028000.ssi: No cache defaults, reading back from HW <6>[ 5.519996] NET: Registered protocol family 10 <6>[ 5.526684] Segment Routing with IPv6 <6>[ 5.526864] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver <6>[ 5.529853] NET: Registered protocol family 17 <6>[ 5.529907] can: controller area network core <6>[ 5.530154] NET: Registered protocol family 29 <6>[ 5.530173] can: raw protocol <6>[ 5.530319] can: broadcast manager protocol <6>[ 5.530368] can: netlink gateway - max_hops=1 <5>[ 5.531054] Key type dns_resolver registered <5>[ 5.547786] Registering SWP/SWPB emulation handler <6>[ 5.548858] printk: console [ttymxc1]: printing thread started <5>[ 5.548961] Loading compiled-in X.509 certificates <4>[ 5.691372] imx_usb 2184000.usb: No over current polarity defined <3>[ 6.303625] mxs_phy 20c9000.usbphy: Data pin can't make good contact. <4>[ 6.314216] imx_usb 2184200.usb: No over current polarity defined