Ram is not 0 cost -- I wonder why they have that much ram for the FPGA. Any speculation?
If I were to speculate I'd guess all waveforms are generated internally in RAM, then played back.
You can also upload waveforms and refer to them by name later, but I don't know if those are kept in RAM. It could be it persists them to flash but reloads all waveforms into RAM on startup and expects to find them there during operation, rather than when requested.
Logged in as root while it's running -- free memory is around 85Meg while generating 2 different signals with many harmonics.
The provided arbitrary waveforms are only 32k each (16k samples at 2 bytes/per sample)
The FPGA has 256Meg -- that's where the waveforms will reside while being generated.
The UI app is only using a few percent of the cpu -- even while changing waveforms.
It looks like the CPU board is overkill for this application.
Here is the boot text;
<5>[ 0.000000] Linux version 3.2.0-svn6268 (ding@ding-desktop) (gcc version 4.5.3 20110311 (prerelease) (GCC) ) #70 Fri Jul 21 11:47:50 ULAST 2017
<1>[ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7d
<1>[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
<1>[ 0.000000] Machine: am335xevm
<4>[ 0.000000] Ignoring tag cmdline (using the default kernel command line)
<1>[ 0.000000] Memory policy: ECC disabled, Data cache writeback
<7>[ 0.000000] On node 0 totalpages: 32768
<7>[ 0.000000] free_area_init_node: node 0, pgdat c05b7068, node_mem_map c0602000
<7>[ 0.000000] Normal zone: 256 pages used for memmap
<7>[ 0.000000] Normal zone: 0 pages reserved
<7>[ 0.000000] Normal zone: 32512 pages, LIFO batch:7
<6>[ 0.000000] AM335X ES1.0 (neon )
<7>[ 0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
<7>[ 0.000000] pcpu-alloc:
<1>[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 32512
<5>[ 0.000000] Kernel command line: console=ttyO0,115200n8 root=ubi0:rootfs ro ubi.mtd=7,2048 rootfstype=ubifs rootwait=1t ip=none
<6>[ 0.000000] PID hash table entries: 512 (order: -1, 2048 bytes)
<6>[ 0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
<6>[ 0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
<6>[ 0.000000] Memory: 128MB = 128MB total
<5>[ 0.000000] Memory: 123756k/123756k available, 7316k reserved, 0K highmem
<5>[ 0.000000] Virtual kernel memory layout:
<5>[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
<5>[ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
<5>[ 0.000000] vmalloc : 0xc8800000 - 0xff000000 ( 872 MB)
<5>[ 0.000000] lowmem : 0xc0000000 - 0xc8000000 ( 128 MB)
<5>[ 0.000000] modules : 0xbf000000 - 0xc0000000 ( 16 MB)
<5>[ 0.000000] .text : 0xc0008000 - 0xc0529364 (5253 kB)
<5>[ 0.000000] .init : 0xc052a000 - 0xc056c000 ( 264 kB)
<5>[ 0.000000] .data : 0xc056c000 - 0xc05bd350 ( 325 kB)
<5>[ 0.000000] .bss : 0xc05bd374 - 0xc060103c ( 272 kB)
<6>[ 0.000000] NR_IRQS:396
<6>[ 0.000000] IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
<6>[ 0.000000] Total of 128 interrupts on 1 active controller
<6>[ 0.000000] OMAP clockevent source: GPTIMER2 at 25000000 Hz
<4>[ 0.000000] omap_dm_timer_switch_src: Switching to HW default clocksource(sys_clkin_ck) for timer1, this may impact timekeeping in low power state
<6>[ 0.000000] OMAP clocksource: GPTIMER1 at 25000000 Hz
<6>[ 0.000000] sched_clock: 32 bits at 25MHz, resolution 40ns, wraps every 171798ms
<6>[ 0.000000] Console: colour dummy device 80x30
<6>[ 0.000209] Calibrating delay loop... 718.02 BogoMIPS (lpj=3590144)
<6>[ 0.057098] pid_max: default: 32768 minimum: 301
<6>[ 0.057279] Mount-cache hash table entries: 512
<6>[ 0.057665] CPU: Testing write buffer coherency: ok
<6>[ 0.057741] ftrace: allocating 14556 entries in 43 pages
<4>[ 0.109666] omap_hwmod: gfx: failed to hardreset
<4>[ 0.125747] omap_hwmod: pruss: failed to hardreset
<6>[ 0.126911] print_constraints: dummy:
<6>[ 0.127220] NET: Registered protocol family 16
<6>[ 0.129423] OMAP GPIO hardware version 0.1
<1>[ 0.131682] am335x_evm_init()++
<6>[ 0.131906] omap_mux_init: Add partition: #1: core, flags: 0
<1>[ 0.134052] am335x_evm_i2c_init()++
<4>[ 0.134295] omap_i2c.1: alias fck already exists
<1>[ 0.134502] am335x_evm_i2c_init()--
<1>[ 0.134629] da8xx_panel_power_ctrl()++
<1>[ 0.134668] back light switch = 1
<1>[ 0.134690] da8xx_panel_power_ctrl()--
<1>[ 0.135010] am335x_evm_init()--
<4>[ 0.135304] omap2_mcspi.1: alias fck already exists
<4>[ 0.135525] omap2_mcspi.2: alias fck already exists
<4>[ 0.135792] edma.0: alias fck already exists
<4>[ 0.135814] edma.0: alias fck already exists
<4>[ 0.135833] edma.0: alias fck already exists
<6>[ 0.152750] bio: create slab <bio-0> at 0
<5>[ 0.154907] SCSI subsystem initialized
<6>[ 0.156705] usbcore: registered new interface driver usbfs
<6>[ 0.157034] usbcore: registered new interface driver hub
<6>[ 0.157293] usbcore: registered new device driver usb
<6>[ 0.157906] omap_i2c omap_i2c.1: bus 1 rev2.4.0 at 100 kHz
<6>[ 0.159687] tps65910 1-002d: JTAGREVNUM 0x0
<6>[ 0.162075] print_constraints: VRTC:
<6>[ 0.163517] print_constraints: VIO: at 1500 mV
<6>[ 0.165823] print_constraints: VDD1: 600 <--> 1500 mV at 1262 mV normal
<6>[ 0.168126] print_constraints: VDD2: 600 <--> 1500 mV at 1137 mV normal
<6>[ 0.169155] print_constraints: VDD3: 5000 mV
<6>[ 0.170565] print_constraints: VDIG1: at 1800 mV
<6>[ 0.171980] print_constraints: VDIG2: at 1800 mV
<6>[ 0.173394] print_constraints: VPLL: at 1800 mV
<6>[ 0.174801] print_constraints: VDAC: at 1800 mV
<6>[ 0.176228] print_constraints: VAUX1: at 1800 mV
<6>[ 0.177636] print_constraints: VAUX2: at 3300 mV
<6>[ 0.179069] print_constraints: VAUX33: at 3300 mV
<6>[ 0.180482] print_constraints: VMMC: at 3300 mV
<4>[ 0.180974] tps65910 1-002d: No interrupt support, no core IRQ
<6>[ 0.182607] cfg80211: Calling CRDA to update world regulatory domain
<6>[ 0.183254] Switching to clocksource gp timer
<6>[ 0.204259] NET: Registered protocol family 2
<6>[ 0.204472] IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
<6>[ 0.204764] TCP established hash table entries: 4096 (order: 3, 32768 bytes)
<6>[ 0.204856] TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
<6>[ 0.204912] TCP: Hash tables configured (established 4096 bind 4096)
<6>[ 0.204925] TCP reno registered
<6>[ 0.204938] UDP hash table entries: 256 (order: 0, 4096 bytes)
<6>[ 0.204962] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
<6>[ 0.205135] NET: Registered protocol family 1
<6>[ 0.205418] RPC: Registered named UNIX socket transport module.
<6>[ 0.205431] RPC: Registered udp transport module.
<6>[ 0.205441] RPC: Registered tcp transport module.
<6>[ 0.205450] RPC: Registered tcp NFSv4.1 backchannel transport module.
<3>[ 0.206177] cpuidle-am33xx cpuidle-am33xx.0: failed to register driver
<6>[ 0.213550] Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
<6>[ 0.213891] msgmni has been set to 241
<6>[ 0.214558] io scheduler noop registered
<6>[ 0.214573] io scheduler deadline registered
<6>[ 0.214654] io scheduler cfq registered (default)
<6>[ 0.215792] omap_uart.0: ttyO0 at MMIO 0x44e09000 (irq = 72) is a OMAP UART0
<6>[ 0.766297] console [ttyO0] enabled
<6>[ 0.770438] omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
<6>[ 0.778228] omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
<6>[ 0.785977] omap_uart.3: ttyO3 at MMIO 0x481a6000 (irq = 44) is a OMAP UART3
<6>[ 0.793704] omap_uart.4: ttyO4 at MMIO 0x481a8000 (irq = 45) is a OMAP UART4
<6>[ 0.801387] omap_uart.5: ttyO5 at MMIO 0x481aa000 (irq = 46) is a OMAP UART5
<6>[ 0.818601] brd: module loaded
<6>[ 0.826897] loop: module loaded
<6>[ 0.830261] at24 1-0051: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
<6>[ 0.893296] No daughter card found
<6>[ 0.896889] at24 1-0050: 32768 byte 24c256 EEPROM, writable, 64 bytes/write
<1>[ 0.904159] am335x_evm_setup()++
<4>[ 0.963295] AM335X: EVM Config read fail: -110
<6>[ 0.967924] No board detected, using GPBoard 1.1A as default
<6>[ 0.973972] The board is general purpose EVM in profile 0
<3>[ 0.979597] Found invalid GP EVM revision, falling back to Rev1.1A
<1>[ 0.986050] -------siglent_fpga_init++
<1>[ 0.990055] -------siglent_fpga_init--
<4>[ 0.994756] da8xx_lcdc.0: alias fck already exists
<1>[ 1.000284] evm_nand_init()++
<6>[ 1.004003] omap-gpmc omap-gpmc: GPMC revision 6.0
<6>[ 1.009005] Registering NAND on CS0
<1>[ 1.013236] evm_nand_init()--
<1>[ 1.017764] haptics_init()++
<1>[ 1.021746] haptics_init()--
<1>[ 1.024794] out_triger_gpio_init()++
<1>[ 1.028557] out_triger_gpio_init()--
<1>[ 1.032748] am335x_evm_setup()--
<3>[ 1.037674] mtdoops: mtd device (mtddev=name/number) must be supplied
<6>[ 1.044801] omap2-nand driver initializing
<6>[ 1.049388] ONFI flash detected
<6>[ 1.052791] ONFI param page 0 valid
<6>[ 1.056465] NAND device: Manufacturer ID: 0x2c, Chip ID: 0xda (Micron MT29F2G08ABAEAWP)
<5>[ 1.065152] Creating 12 MTD partitions on "omap2-nand.0":
<5>[ 1.070796] 0x000000000000-0x000000020000 : "SPL"
<5>[ 1.077162] 0x000000020000-0x000000040000 : "SPL.backup1"
<5>[ 1.084113] 0x000000040000-0x000000060000 : "SPL.backup2"
<5>[ 1.091002] 0x000000060000-0x000000080000 : "SPL.backup3"
<5>[ 1.097969] 0x000000080000-0x000000260000 : "U-Boot"
<5>[ 1.105199] 0x000000260000-0x000000280000 : "U-Boot Env"
<5>[ 1.112014] 0x000000280000-0x000000580000 : "Manufacturedata"
<5>[ 1.120550] 0x000000580000-0x000003080000 : "rootfs"
<5>[ 1.144892] 0x000003080000-0x000003680000 : "kerneldata"
<5>[ 1.154142] 0x000003680000-0x000006880000 : "firmdata0"
<5>[ 1.181575] 0x000006880000-0x000009a80000 : "firmdata1"
<5>[ 1.208986] 0x000009a80000-0x000010000000 : "datafs"
<6>[ 1.257741] OneNAND driver initializing
<5>[ 1.262444] UBI: attaching mtd7 to ubi0
<5>[ 1.266497] UBI: physical eraseblock size: 131072 bytes (128 KiB)
<5>[ 1.273026] UBI: logical eraseblock size: 126976 bytes
<5>[ 1.278661] UBI: smallest flash I/O unit: 2048
<5>[ 1.283570] UBI: sub-page size: 512
<5>[ 1.288379] UBI: VID header offset: 2048 (aligned 2048)
<5>[ 1.294646] UBI: data offset: 4096
<5>[ 1.709829] UBI: max. sequence number: 160
<4>[ 1.728356] UBI warning: print_rsvd_warning: cannot reserve enough PEBs for bad PEB handling, reserved 9, need 12
<5>[ 1.740044] UBI: attached mtd7 to ubi0
<5>[ 1.743992] UBI: MTD device name: "rootfs"
<5>[ 1.749254] UBI: MTD device size: 43 MiB
<5>[ 1.754346] UBI: number of good PEBs: 344
<5>[ 1.759153] UBI: number of bad PEBs: 0
<5>[ 1.763789] UBI: number of corrupted PEBs: 0
<5>[ 1.768417] UBI: max. allowed volumes: 128
<5>[ 1.773224] UBI: wear-leveling threshold: 4096
<5>[ 1.778132] UBI: number of internal volumes: 1
<5>[ 1.782758] UBI: number of user volumes: 1
<5>[ 1.787393] UBI: available PEBs: 0
<5>[ 1.792020] UBI: total number of reserved PEBs: 344
<5>[ 1.797109] UBI: number of PEBs reserved for bad PEB handling: 9
<5>[ 1.803375] UBI: max/mean erase counter: 2/0
<5>[ 1.807821] UBI: image sequence number: 769161752
<5>[ 1.812881] UBI: background thread "ubi_bgt0d" started, PID 485
<6>[ 1.863341] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
<6>[ 1.869792] davinci_mdio davinci_mdio.0: detected phy mask bfffffff
<1>[ 1.876557] bus->id = 0, addr= 30
<1>[ 1.880211] 11--
<6>[ 1.882341] davinci_mdio.0: probed
<6>[ 1.885927] davinci_mdio davinci_mdio.0: phy[30]: device 0:1e, driver unknown
<6>[ 1.893749] usbcore: registered new interface driver rt2800usb
<6>[ 1.899829] Initializing USB Mass Storage driver...
<6>[ 1.905123] usbcore: registered new interface driver usb-storage
<6>[ 1.911383] USB Mass Storage support registered.
<6>[ 1.916664] mousedev: PS/2 mouse device common for all mice
<6>[ 1.922474] i2c /dev entries driver
<6>[ 1.927250] OMAP Watchdog Timer Rev 0x01: initial timeout 60 sec
<7>[ 1.934071] Registered led device: omap3evm::leda
<6>[ 1.934311] TCP cubic registered
<6>[ 1.937680] NET: Registered protocol family 17
<6>[ 1.942444] NET: Registered protocol family 33
<6>[ 1.947131] lib80211: common routines for IEEE802.11 drivers
<7>[ 1.953030] lib80211_crypt: registered algorithm 'NULL'
<7>[ 1.953041] lib80211_crypt: registered algorithm 'WEP'
<7>[ 1.953052] lib80211_crypt: registered algorithm 'CCMP'
<7>[ 1.953062] lib80211_crypt: registered algorithm 'TKIP'
<5>[ 1.953073] Registering the dns_resolver key type
<6>[ 1.958073] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
<6>[ 1.966077] ThumbEE CPU extension supported.
<4>[ 1.970586] mux: Failed to setup hwmod io irq -22
<6>[ 1.976103] Power Management for AM33XX family
<6>[ 1.980790] clock: disabling unused clocks to save power
<6>[ 1.987994] Detected MACID=c8:fd:19:d1:4f:32
<5>[ 2.067310] UBIFS: recovery needed
<5>[ 2.275817] UBIFS: recovery deferred
<5>[ 2.279564] UBIFS: mounted UBI device 0, volume 0, name "rootfs"
<5>[ 2.285837] UBIFS: mounted read-only
<5>[ 2.289563] UBIFS: file system size: 40632320 bytes (39680 KiB, 38 MiB, 320 LEBs)
<5>[ 2.297556] UBIFS: journal size: 9023488 bytes (8812 KiB, 8 MiB, 72 LEBs)
<5>[ 2.305183] UBIFS: media format: w4/r0 (latest is w4/r0)
<5>[ 2.311259] UBIFS: default compressor: lzo
<5>[ 2.315537] UBIFS: reserved for root: 0 bytes (0 KiB)
<6>[ 2.322725] VFS: Mounted root (ubifs filesystem) readonly on device 0:12.
<6>[ 2.330223] Freeing init memory: 264K
<5>[ 4.120378] UBI: attaching mtd11 to ubi1
<5>[ 4.124536] UBI: physical eraseblock size: 131072 bytes (128 KiB)
<5>[ 4.131066] UBI: logical eraseblock size: 126976 bytes
<5>[ 4.136701] UBI: smallest flash I/O unit: 2048
<5>[ 4.141599] UBI: sub-page size: 512
<5>[ 4.146418] UBI: VID header offset: 2048 (aligned 2048)
<5>[ 4.152675] UBI: data offset: 4096
<5>[ 5.125439] UBI: max. sequence number: 580
<5>[ 5.153424] UBI: attached mtd11 to ubi1
<5>[ 5.157440] UBI: MTD device name: "datafs"
<5>[ 5.162702] UBI: MTD device size: 101 MiB
<5>[ 5.167889] UBI: number of good PEBs: 812
<5>[ 5.172697] UBI: number of bad PEBs: 0
<5>[ 5.177334] UBI: number of corrupted PEBs: 0
<5>[ 5.181962] UBI: max. allowed volumes: 128
<5>[ 5.186779] UBI: wear-leveling threshold: 4096
<5>[ 5.191678] UBI: number of internal volumes: 1
<5>[ 5.196315] UBI: number of user volumes: 1
<5>[ 5.200941] UBI: available PEBs: 0
<5>[ 5.205578] UBI: total number of reserved PEBs: 812
<5>[ 5.210657] UBI: number of PEBs reserved for bad PEB handling: 32
<5>[ 5.217015] UBI: max/mean erase counter: 3/1
<5>[ 5.221461] UBI: image sequence number: 264443814
<5>[ 5.226480] UBI: background thread "ubi_bgt1d" started, PID 558
<5>[ 5.340002] UBIFS: recovery needed
<5>[ 5.511354] UBIFS: recovery completed
<5>[ 5.515220] UBIFS: mounted UBI device 1, volume 0, name "rootfs"
<5>[ 5.521483] UBIFS: file system size: 97136640 bytes (94860 KiB, 92 MiB, 765 LEBs)
<5>[ 5.529477] UBIFS: journal size: 9023488 bytes (8812 KiB, 8 MiB, 72 LEBs)
<5>[ 5.537105] UBIFS: media format: w4/r0 (latest is w4/r0)
<5>[ 5.543182] UBIFS: default compressor: lzo
<5>[ 5.547456] UBIFS: reserved for root: 0 bytes (0 KiB)
<5>[ 5.617689] UBI: attaching mtd9 to ubi2
<5>[ 5.621712] UBI: physical eraseblock size: 131072 bytes (128 KiB)
<5>[ 5.628309] UBI: logical eraseblock size: 126976 bytes
<5>[ 5.633946] UBI: smallest flash I/O unit: 2048
<5>[ 5.638845] UBI: sub-page size: 512
<5>[ 5.643665] UBI: VID header offset: 2048 (aligned 2048)
<5>[ 5.649922] UBI: data offset: 4096
<5>[ 6.131575] UBI: max. sequence number: 25
<5>[ 6.159784] UBI: attached mtd9 to ubi2
<5>[ 6.163773] UBI: MTD device name: "firmdata0"
<5>[ 6.169308] UBI: MTD device size: 50 MiB
<5>[ 6.174401] UBI: number of good PEBs: 400
<5>[ 6.179208] UBI: number of bad PEBs: 0
<5>[ 6.183846] UBI: number of corrupted PEBs: 0
<5>[ 6.188473] UBI: max. allowed volumes: 128
<5>[ 6.193290] UBI: wear-leveling threshold: 4096
<5>[ 6.198188] UBI: number of internal volumes: 1
<5>[ 6.202814] UBI: number of user volumes: 1
<5>[ 6.207450] UBI: available PEBs: 0
<5>[ 6.212077] UBI: total number of reserved PEBs: 400
<5>[ 6.217166] UBI: number of PEBs reserved for bad PEB handling: 16
<5>[ 6.223523] UBI: max/mean erase counter: 2/1
<5>[ 6.227970] UBI: image sequence number: 879522226
<5>[ 6.232982] UBI: background thread "ubi_bgt2d" started, PID 583
<5>[ 6.335449] UBIFS: recovery needed
<5>[ 6.438424] UBIFS: recovery deferred
<5>[ 6.442166] UBIFS: mounted UBI device 2, volume 0, name "firmdata0"
<5>[ 6.448721] UBIFS: mounted read-only
<5>[ 6.452449] UBIFS: file system size: 46854144 bytes (45756 KiB, 44 MiB, 369 LEBs)
<5>[ 6.460443] UBIFS: journal size: 9023488 bytes (8812 KiB, 8 MiB, 72 LEBs)
<5>[ 6.468071] UBIFS: media format: w4/r0 (latest is w4/r0)
<5>[ 6.474156] UBIFS: default compressor: lzo
<5>[ 6.478422] UBIFS: reserved for root: 0 bytes (0 KiB)
<4>[ 7.973305] sched: RT throttling activated
<3>[ 9.265308]
<3>[ 9.265318] CPSW phy found : id is : 0x20005c90
<3>[ 9.272326] PHY 0:01 not found
<1>[ 9.444391] gpib_usb_init
<6>[ 9.461740] usbcore: registered new interface driver usb-gpib
<6>[ 11.264006] PHY: 0:1e - Link is Up - 100/Full
<6>[ 17.844018] musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
<6>[ 17.917193] musb-ti81xx musb-ti81xx: musb0, board_mode=0x13, plat_mode=0x3
<6>[ 17.949020] musb-hdrc musb-hdrc.0: dma type: pio
<7>[ 17.968437] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
<7>[ 17.968469] musb-hdrc: MHDRC RTL version 2.0
<7>[ 17.968480] musb-hdrc: setup fifo_mode 4
<7>[ 17.968512] musb-hdrc: 28/31 max ep, 16384/16384 memory
<6>[ 17.974834] musb-hdrc musb-hdrc.0: USB OTG mode controller at c8aa2000 using PIO, IRQ 18
<6>[ 18.002175] musb-ti81xx musb-ti81xx: musb1, board_mode=0x13, plat_mode=0x1
<6>[ 18.013720] musb-hdrc musb-hdrc.1: dma type: pio
<7>[ 18.032897] musb-hdrc: ConfigData=0xde (UTMI-8, dyn FIFOs, bulk combine, bulk split, HB-ISO Rx, HB-ISO Tx, SoftConn)
<7>[ 18.032929] musb-hdrc: MHDRC RTL version 2.0
<7>[ 18.032941] musb-hdrc: setup fifo_mode 4
<7>[ 18.032972] musb-hdrc: 28/31 max ep, 16384/16384 memory
<6>[ 18.033027] musb-hdrc musb-hdrc.1: MUSB HDRC host driver
<6>[ 18.038804] musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 1
<6>[ 18.046663] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
<6>[ 18.053761] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
<6>[ 18.061306] usb usb1: Product: MUSB HDRC host driver
<6>[ 18.066499] usb usb1: Manufacturer: Linux 3.2.0-svn6268 musb-hcd
<6>[ 18.072758] usb usb1: SerialNumber: musb-hdrc.1
<6>[ 18.094532] hub 1-0:1.0: USB hub found
<6>[ 18.098518] hub 1-0:1.0: 1 port detected
<6>[ 18.113447] musb-hdrc musb-hdrc.1: USB Host mode controller at c8aa4800 using PIO, IRQ 19
<6>[ 18.343989] da8xx_lcdc da8xx_lcdc.0: GLCD: Found HANSTAR_HSD070IDW1_A panel
<1>[ 19.189894] usbtmc_bind+++
<6>[ 19.200266] SIGLENT_DEV: SIGLENT_DEV, version: 2007 OCT 06
<6>[ 19.206089] musb-hdrc musb-hdrc.0: MUSB HDRC host driver
<6>[ 19.211669] musb-hdrc musb-hdrc.0: new USB bus registered, assigned bus number 2
<6>[ 19.219528] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
<6>[ 19.226626] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
<6>[ 19.234170] usb usb2: Product: MUSB HDRC host driver
<6>[ 19.239346] usb usb2: Manufacturer: Linux 3.2.0-svn6268 musb-hcd
<6>[ 19.245615] usb usb2: SerialNumber: musb-hdrc.0
<6>[ 19.271157] hub 2-0:1.0: USB hub found
<6>[ 19.275165] hub 2-0:1.0: 1 port detected
<1>[ 19.293033] usbtmc_open()++
<1>[ 19.296030] dev->usbtmc_cdev_open ret = 0
<1>[ 19.300205] ret = 0
<1>[ 19.302386] usbtmc_open--