U-Boot SPL 2014.01-00219-gc4d376f (Feb 18 2014 - 19:57:32) U-Boot 2014.01-00219-gc4d376f (Feb 18 2014 - 19:57:32) TEGRA114 Board: NVIDIA Dalmore I2C: ready DRAM: 2 GiB MMC: Tegra SD/MMC: 0, Tegra SD/MMC: 1 In: serial Out: serial Err: serial Net: Net Initialization Skipped No ethernet found. Hit any key to stop autoboot: 2  0 Tegra114 (Dalmore) # Tegra114 (Dalmore) # usb reset (Re)start USB... USB0: USB EHCI 1.10 scanning bus 0 for devices... 2 USB Device(s) found scanning usb for storage devices... 0 Storage Device(s) found scanning usb for ethernet devices... Warning: asx0 using MAC address from net device 1 Ethernet Device(s) found Tegra114 (Dalmore) # setenv bootargs 'ignore_loglevel console=ttyS0,115200n8 rw root=/dev/mmcblk0p1 rootwait gpt debug init=/bin/bash' Tegra114 (Dalmore) # setenv ipaddr 192.168.100.100; setenv serverip 192.168.100.1; setenv tftpserverip 192.168.100.1 Tegra114 (Dalmore) # tftpboot 0x81000000 zImage.multi_v7_defconfig Using asx0 device TFTP from server 192.168.100.1; our IP address is 192.168.100.100 Filename 'zImage.multi_v7_defconfig'. Load address: 0x81000000 Loading: *################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ## 3.3 MiB/s done Bytes transferred = 5748656 (57b7b0 hex) Tegra114 (Dalmore) # tftpboot 0x82000000 tegra114-dalmore.dtb Using asx0 device TFTP from server 192.168.100.1; our IP address is 192.168.100.100 Filename 'tegra114-dalmore.dtb'. Load address: 0x82000000 Loading: *### 3 MiB/s done Bytes transferred = 34638 (874e hex) Tegra114 (Dalmore) # bootz 0x81000000 - 0x82000000 Kernel image @ 0x81000000 [ 0x000000 - 0x57b7b0 ] ## Flattened Device Tree blob at 82000000 Booting using the fdt blob at 0x82000000 Loading Device Tree to 8fff4000, end 8ffff74d ... OK Starting kernel ... [ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 3.19.0-13903-gbfa76d49 (pwalmsley@tamien) (gcc version 4.7.3 20130328 (prerelease) (crosstool-NG linaro-1.13.1-4.7-2013.04-20130415 - Linaro GCC 2013.04) ) #1 SMP Sun Feb 8 19:34:43 PST 2015 [ 0.000000] CPU: ARMv7 Processor [412fc0f2] revision 2 (ARMv7), cr=10c5387d [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction cache [ 0.000000] Machine model: NVIDIA Tegra114 Dalmore evaluation board [ 0.000000] debug: ignoring loglevel setting. [ 0.000000] cma: Reserved 64 MiB at 0xfb800000 [ 0.000000] Memory policy: Data cache writealloc [ 0.000000] On node 0 totalpages: 524032 [ 0.000000] free_area_init_node: node 0, pgdat c0dfd300, node_mem_map ee7f8000 [ 0.000000] DMA zone: 1520 pages used for memmap [ 0.000000] DMA zone: 0 pages reserved [ 0.000000] DMA zone: 194560 pages, LIFO batch:31 [ 0.000000] HighMem zone: 329472 pages, LIFO batch:31 [ 0.000000] PERCPU: Embedded 9 pages/cpu @ee7af000 s7936 r8192 d20736 u36864 [ 0.000000] pcpu-alloc: s7936 r8192 d20736 u36864 alloc=9*4096 [ 0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 522512 [ 0.000000] Kernel command line: ignore_loglevel console=ttyS0,115200n8 rw root=/dev/mmcblk0p1 rootwait gpt debug init=/bin/bash [ 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: 2000496K/2096128K available (7477K kernel code, 956K rwdata, 3052K rodata, 764K init, 306K bss, 30096K reserved, 65536K cma-reserved, 1252352K highmem) [ 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 : 0xc0208000 - 0xc0c5090c (10531 kB) [ 0.000000] .init : 0xc0c51000 - 0xc0d10000 ( 764 kB) [ 0.000000] .data : 0xc0d10000 - 0xc0dff200 ( 957 kB) [ 0.000000] .bss : 0xc0dff200 - 0xc0e4bb28 ( 307 kB) [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1 [ 0.000000] Hierarchical RCU implementation. [ 0.000000] RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=4. [ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4 [ 0.000000] NR_IRQS:16 nr_irqs:16 16 [ 0.000000] L2C: failed to init: -19 [ 0.000008] sched_clock: 32 bits at 1000kHz, resolution 1000ns, wraps every 2147483648000ns [ 0.000028] Switching to timer-based delay loop, resolution 1000ns [ 0.002588] Architected cp15 timer(s) running at 12.00MHz (virt). [ 0.002612] sched_clock: 56 bits at 12MHz, resolution 83ns, wraps every 2863311536128ns [ 0.002625] Switching to timer-based delay loop, resolution 83ns [ 0.002959] Console: colour dummy device 80x30 [ 0.002984] Calibrating delay loop (skipped), value calculated using timer frequency.. 24.00 BogoMIPS (lpj=60000) [ 0.002999] pid_max: default: 32768 minimum: 301 [ 0.003123] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes) [ 0.003136] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes) [ 0.003777] CPU: Testing write buffer coherency: ok [ 0.003985] /cpus/cpu@0 missing clock-frequency property [ 0.004014] /cpus/cpu@1 missing clock-frequency property [ 0.004042] /cpus/cpu@2 missing clock-frequency property [ 0.004071] /cpus/cpu@3 missing clock-frequency property [ 0.004084] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 [ 0.004134] Setting up static identity map for 0x80911c60 - 0x80911cf8 [ 0.005998] Tegra Revision: A01 SKU: 0 CPU Process: 1 Core Process: 0 [ 0.007072] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001 [ 0.007624] CPU2: thread -1, cpu 2, socket 0, mpidr 80000002 [ 0.008133] CPU3: thread -1, cpu 3, socket 0, mpidr 80000003 [ 0.008197] Brought up 4 CPUs [ 0.008219] SMP: Total of 4 processors activated (96.00 BogoMIPS). [ 0.008227] CPU: All CPU(s) started in SVC mode. [ 0.008780] devtmpfs: initialized [ 0.009642] VFP support v0.3: implementor 41 architecture 4 part 30 variant f rev 0 [ 0.011539] pinctrl core: initialized pinctrl subsystem [ 0.022607] NET: Registered protocol family 16 [ 0.024713] DMA: preallocated 256 KiB pool for atomic coherent allocations [ 0.037482] cpuidle: using governor ladder [ 0.052498] cpuidle: using governor menu [ 0.066346] No ATAGs? [ 0.066382] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers. [ 0.066393] hw-breakpoint: maximum watchpoint size is 8 bytes. [ 0.069331] Serial: AMBA PL011 UART driver [ 0.096485] dvdd_ts: Failed to request enable GPIO61: -517 [ 0.096588] reg-fixed-voltage regulators:regulator@1: Failed to register regulator: -517 [ 0.096611] platform regulators:regulator@1: Driver reg-fixed-voltage requests probe deferral [ 0.096787] usb1_vbus: Failed to request enable GPIO108: -517 [ 0.096883] reg-fixed-voltage regulators:regulator@3: Failed to register regulator: -517 [ 0.096905] platform regulators:regulator@3: Driver reg-fixed-voltage requests probe deferral [ 0.097081] usb2_vbus: Failed to request enable GPIO86: -517 [ 0.097175] reg-fixed-voltage regulators:regulator@4: Failed to register regulator: -517 [ 0.097196] platform regulators:regulator@4: Driver reg-fixed-voltage requests probe deferral [ 0.097396] reg-fixed-voltage regulators:regulator@5: Failed to find supply vin [ 0.097499] reg-fixed-voltage regulators:regulator@5: Failed to register regulator: -517 [ 0.097520] platform regulators:regulator@5: Driver reg-fixed-voltage requests probe deferral [ 0.097617] platform regulators:regulator@6: Driver reg-fixed-voltage requests probe deferral [ 0.097793] VDD_5V0_HDMI_CON: Failed to request enable GPIO81: -517 [ 0.097885] reg-fixed-voltage regulators:regulator@7: Failed to register regulator: -517 [ 0.097906] platform regulators:regulator@7: Driver reg-fixed-voltage requests probe deferral [ 0.100270] vgaarb: loaded [ 0.100954] SCSI subsystem initialized [ 0.101141] libata version 3.00 loaded. [ 0.101479] usbcore: registered new interface driver usbfs [ 0.101549] usbcore: registered new interface driver hub [ 0.101623] usbcore: registered new device driver usb [ 0.105510] tps65090 2-0048: No cache defaults, reading back from HW [ 0.107652] vdd-sys-5v0: supplied by vdd_ac_bat [ 0.108741] vdd-sys-3v3: supplied by vdd_ac_bat [ 0.109807] vdd-ao: supplied by vdd_ac_bat [ 0.110201] vdd-lcd-bl: supplied by vdd_ac_bat [ 0.110573] TPS65090_RAILSFET2: supplied by vdd_ac_bat [ 0.110947] vdd-modem-3v3: supplied by vdd-sys-3v3 [ 0.111499] avdd-lcd: supplied by vdd-sys-3v3 [ 0.112026] vdd-lvds: supplied by vdd-sys-3v3 [ 0.112891] vdd-sd-slot: supplied by vdd-sys-3v3 [ 0.113440] vdd-com-3v3: supplied by vdd-sys-3v3 [ 0.113972] vdd-sby-5v0: supplied by vdd_ac_bat [ 0.114188] vdd-sby-3v3: supplied by vdd_ac_bat [ 0.114952] genirq: Setting trigger mode 8 for irq 341 failed (gic_set_type+0x0/0x98) [ 0.114974] palmas 2-0058: Irq flag is 0x00000000 [ 0.118200] palmas 2-0058: Muxing GPIO ff, PWM 0, LED 0 [ 0.120946] vddio-ddr: supplied by vdd-ao [ 0.122561] vddio-1v8: supplied by vdd-ao [ 0.124336] vdd-core: supplied by vdd-sys-3v3 [ 0.127081] avdd-pll: supplied by vdd-sys-3v3 [ 0.129067] sdhci-vdd-sd-slot: ramp_delay not set [ 0.129451] sdhci-vdd-sd-slot: supplied by vdd-sys-3v3 [ 0.131310] avdd-cam1: supplied by vdd-sys-3v3 [ 0.132445] avdd-cam2: supplied by vdd-sys-3v3 [ 0.133594] avdd-dsi-csi: supplied by vddio-1v8 [ 0.134744] vpp-fuse: supplied by vdd-sys-3v3 [ 0.135869] LDO5: supplied by vdd_ac_bat [ 0.137158] vdd-sensor-2v85: supplied by vdd-sys-3v3 [ 0.138304] vdd-af-cam1: supplied by vdd-sys-3v3 [ 0.142902] vdd-rtc: supplied by vdd-ao [ 0.148074] vddio-sdmmc-2: supplied by sdhci-vdd-sd-slot [ 0.149198] hvdd-usb: supplied by vdd-sys-5v0 [ 0.152928] avdd-usb: supplied by vdd-sys-5v0 [ 0.156028] Linux video capture interface: v2.00 [ 0.156086] pps_core: LinuxPPS API ver. 1 registered [ 0.156094] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 0.156131] PTP clock support registered [ 0.156365] EDAC MC: Ver: 3.0.0 [ 0.156921] Advanced Linux Sound Architecture Driver Initialized. [ 0.158041] Switched to clocksource arch_sys_counter [ 0.168381] NET: Registered protocol family 2 [ 0.168980] TCP established hash table entries: 8192 (order: 3, 32768 bytes) [ 0.169070] TCP bind hash table entries: 8192 (order: 4, 65536 bytes) [ 0.169256] TCP: Hash tables configured (established 8192 bind 8192) [ 0.169303] TCP: reno registered [ 0.169317] UDP hash table entries: 512 (order: 2, 16384 bytes) [ 0.169360] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes) [ 0.169544] NET: Registered protocol family 1 [ 0.169802] RPC: Registered named UNIX socket transport module. [ 0.169813] RPC: Registered udp transport module. [ 0.169820] RPC: Registered tcp transport module. [ 0.169830] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 0.169853] PCI: CLS 0 bytes, default 64 [ 0.172118] futex hash table entries: 1024 (order: 4, 65536 bytes) [ 0.184446] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 0.185275] NFS: Registering the id_resolver key type [ 0.185304] Key type id_resolver registered [ 0.185313] Key type id_legacy registered [ 0.185401] ntfs: driver 2.1.31 [Flags: R/O]. [ 0.186558] bounce: pool size: 64 pages [ 0.186779] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 249) [ 0.186795] io scheduler noop registered [ 0.186808] io scheduler deadline registered [ 0.187009] io scheduler cfq registered (default) [ 0.208394] tegra-apbdma 6000a000.dma: Tegra20 APB DMA driver register 32 channels [ 0.275156] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled [ 0.277597] msm_serial: driver initialized [ 0.278540] console [ttyS0] disabled [ 0.278578] 70006300.serial: ttyS0 at MMIO 0x70006300 (irq = 329, base_baud = 25500000) is a Tegra [ 1.221043] console [ttyS0] enabled [ 1.225274] STMicroelectronics ASC driver initialized [ 1.231408] [drm] Initialized drm 1.1.0 20060810 [ 1.238945] platform 54300000.dsi: Driver tegra-dsi requests probe deferral [ 1.246321] tegra-hdmi 54280000.hdmi: failed to get HDMI regulator [ 1.252527] platform 54280000.hdmi: Driver tegra-hdmi requests probe deferral [ 1.266183] loop: module loaded [ 1.274391] m25p80 spi32766.0: w25q32dw (4096 Kbytes) [ 1.282092] CAN device driver interface [ 1.287079] igb: Intel(R) Gigabit Ethernet Network Driver - version 5.2.15-k [ 1.294131] igb: Copyright (c) 2007-2014 Intel Corporation. [ 1.301441] pegasus: v0.9.3 (2013/04/25), Pegasus/Pegasus II USB Ethernet driver [ 1.308895] usbcore: registered new interface driver pegasus [ 1.314632] usbcore: registered new interface driver asix [ 1.320089] usbcore: registered new interface driver ax88179_178a [ 1.326238] usbcore: registered new interface driver cdc_ether [ 1.332148] usbcore: registered new interface driver smsc75xx [ 1.337979] usbcore: registered new interface driver smsc95xx [ 1.343783] usbcore: registered new interface driver net1080 [ 1.349507] usbcore: registered new interface driver cdc_subset [ 1.355484] usbcore: registered new interface driver zaurus [ 1.361154] usbcore: registered new interface driver cdc_ncm [ 1.367128] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 1.373661] ehci-pci: EHCI PCI platform driver [ 1.378161] ehci-platform: EHCI generic platform driver [ 1.383562] ehci-omap: OMAP-EHCI Host Controller driver [ 1.388923] ehci-orion: EHCI orion driver [ 1.393068] SPEAr-ehci: EHCI SPEAr driver [ 1.397209] ehci-st: EHCI STMicroelectronics driver [ 1.402225] ehci-exynos: EHCI EXYNOS driver [ 1.406561] tegra-ehci: Tegra EHCI driver [ 1.410825] platform 7d008000.usb: Driver tegra-ehci requests probe deferral [ 1.417950] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [ 1.424145] ohci-pci: OHCI PCI platform driver [ 1.428646] ohci-platform: OHCI generic platform driver [ 1.434008] ohci-omap3: OHCI OMAP3 driver [ 1.438155] SPEAr-ohci: OHCI SPEAr driver [ 1.442292] ohci-st: OHCI STMicroelectronics driver [ 1.447716] usbcore: registered new interface driver usb-storage [ 1.453984] platform 7d008000.usb-phy: Driver tegra-phy requests probe deferral [ 1.462840] mousedev: PS/2 mouse device common for all mice [ 1.473143] palmas-rtc 7000d000.i2c:tps65913@58:rtc: rtc core: registered 7000d000.i2c:tps659 as rtc0 [ 1.484139] tegra_rtc 7000e000.rtc: rtc core: registered 7000e000.rtc as rtc1 [ 1.491329] tegra_rtc 7000e000.rtc: Tegra internal Real Time Clock [ 1.498064] i2c /dev entries driver [ 1.503454] usbcore: registered new interface driver uvcvideo [ 1.509206] USB Video Class driver (1.1.1) [ 1.513314] gspca_main: v2.14.0 registered [ 1.518088] sbs-battery 0-000b: sbs_probe: Failed to get device status [ 1.524638] sbs-battery: probe of 0-000b failed with error -121 [ 1.538173] Driver 'mmcblk' needs updating - please use bus_type methods [ 1.544966] sdhci: Secure Digital Host Controller Interface driver [ 1.551150] sdhci: Copyright(c) Pierre Ossman [ 1.556477] Synopsys Designware Multimedia Card Interface Driver [ 1.563387] sdhci-pltfm: SDHCI platform and OF driver helper [ 1.569723] sdhci-tegra 78000400.sdhci: Got CD GPIO [ 1.574626] sdhci-tegra 78000400.sdhci: Got WP GPIO [ 1.580610] sdhci-tegra 78000400.sdhci: No vmmc regulator found [ 1.586538] sdhci-tegra 78000400.sdhci: No vqmmc regulator found [ 1.592544] mmc0: Invalid maximum block size, assuming 512 bytes [ 1.633189] mmc0: SDHCI controller on 78000400.sdhci [78000400.sdhci] using ADMA [ 1.640792] sdhci-tegra 78000600.sdhci: No vmmc regulator found [ 1.646721] sdhci-tegra 78000600.sdhci: No vqmmc regulator found [ 1.652729] mmc1: Invalid maximum block size, assuming 512 bytes [ 1.693058] mmc1: SDHCI controller on 78000600.sdhci [78000600.sdhci] using ADMA [ 1.705438] ledtrig-cpu: registered to indicate activity on CPUs [ 1.711700] usbcore: registered new interface driver usbhid [ 1.717286] usbhid: USB HID core driver [ 1.730045] usbcore: registered new interface driver snd-usb-audio [ 1.782015] mmc1: BKOPS_EN bit is not set [ 1.788997] mmc1: new high speed MMC card at address 0001 [ 1.794795] mmcblk0: mmc1:0001 SEM32G 29.1 GiB [ 1.799448] mmcblk0boot0: mmc1:0001 SEM32G partition 1 4.00 MiB [ 1.805482] mmcblk0boot1: mmc1:0001 SEM32G partition 2 4.00 MiB [ 1.811510] mmcblk0rpmb: mmc1:0001 SEM32G partition 3 4.00 MiB [ 1.819861] mmcblk0: p1 p2 p3 p4 p5 p6 p7 p8 [ 2.150662] tegra30-i2s 70080400.i2s: DMA channels sourced from device 70080000.ahub [ 2.167251] tegra-snd-rt5640 sound: rt5640-aif1 <-> 70080400.i2s mapping ok [ 2.177686] input: NVIDIA Tegra Dalmore Headphones as /devices/soc0/sound/sound/card0/input0 [ 2.187479] TCP: cubic registered [ 2.190820] NET: Registered protocol family 17 [ 2.195288] can: controller area network core (rev 20120528 abi 9) [ 2.201538] NET: Registered protocol family 29 [ 2.205997] can: raw protocol (rev 20120528) [ 2.210280] can: broadcast manager protocol (rev 20120528 t) [ 2.215955] can: netlink gateway (rev 20130117) max_hops=1 [ 2.221839] Key type dns_resolver registered [ 2.226721] ThumbEE CPU extension supported. [ 2.231015] Registering SWP/SWPB emulation handler [ 2.237920] usb1_vbus: supplied by vdd-sys-5v0 [ 2.243003] usb2_vbus: supplied by vdd-sys-5v0 [ 2.248284] vdd_hdmi_5v0: supplied by vdd-sys-5v0 [ 2.256248] VDD_5V0_HDMI_CON: supplied by vdd-sys-5v0 [ 2.268607] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 2.275262] [drm] No driver support for vblank timestamp query. [ 2.343962] Console: switching to colour frame buffer device 240x75 [ 2.371350] host1x drm: fb0: frame buffer device [ 2.376058] host1x drm: registered panic notifier [ 2.393180] [drm] Initialized tegra 0.0.0 20120330 on minor 0 [ 2.399799] platform 7d008000.usb: Driver tegra-ehci requests probe deferral [ 2.408602] tegra-ehci 7d008000.usb: EHCI Host Controller [ 2.414034] tegra-ehci 7d008000.usb: new USB bus registered, assigned bus number 1 [ 2.421838] tegra-ehci 7d008000.usb: irq 339, io mem 0x7d008000 [ 2.433167] tegra-ehci 7d008000.usb: USB 2.0 started, EHCI 1.10 [ 2.440061] hub 1-0:1.0: USB hub found [ 2.443880] hub 1-0:1.0: 1 port detected [ 2.449521] input: gpio-keys as /devices/soc0/gpio-keys/input/input1 [ 2.457284] palmas-rtc 7000d000.i2c:tps65913@58:rtc: setting system clock to 2000-07-16 22:55:21 UTC (963788121) [ 2.478313] vdd_cam_1v8_reg: disabling [ 2.482530] vdd_hdmi_5v0: disabling [ 2.486056] usb1_vbus: disabling [ 2.489292] dvdd_ts: disabling [ 2.496176] ALSA device list: [ 2.499187] #0: NVIDIA Tegra Dalmore [ 2.504525] EXT4-fs (mmcblk0p1): mounting ext3 file system using the ext4 subsystem [ 2.530217] EXT4-fs (mmcblk0p1): recovery complete [ 2.535042] EXT4-fs (mmcblk0p1): mounted filesystem with ordered data mode. Opts: (null) [ 2.543179] VFS: Mounted root (ext3 filesystem) on device 179:1. [ 2.554030] devtmpfs: mounted [ 2.557602] Freeing unused kernel memory: 764K (c0c51000 - c0d10000) bash: cannot set terminal process group (-1): Inappropriate ioctl for device bash: no job control in this shell root@(none):/# [ 2.753260] usb 1-1: new high-speed USB device number 2 using tegra-ehci