FAQ:[#6932] Fail to set bitrate to 1000000 in bf548-ezkit for can bus test(2011)

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[#6932] Fail to set bitrate to 1000000 in bf548-ezkit for can bus test

Submitted By: Vivi Li

Open Date

2011-12-23 02:04:31    


Medium     Assignee:

steven miao


Open     Fixed In Release:


Found In Release:

2011R1     Release:


N/A     Board:



BF548     Silicon Revision:

Is this bug repeatable?:

Yes     Resolution:


Uboot version or rev.:

    Toolchain version or rev.:


App binary format:


Summary: Fail to set bitrate to 1000000 in bf548-ezkit for can bus test



Fail to set bitrate to 1000000 in bf548-ezkit for can bus test.

Bf537-STAMP can work.



Linux version 3.0.8-ADI-2011R1-svn10231 (test@linux73-bf537-wt-adxl) (gcc version 4.3.5 (ADI-2011R1-RC2) ) #87 Wed Nov 30 18:09:1

register early platform devices

bootconsole [early_shadow0] enabled

bootconsole [early_BFuart1] enabled

early printk enabled on early_BFuart1

Board Memory: 64MB

Kernel Managed Memory: 64MB

Memory map:

  fixedcode = 0x00000400-0x00000490

  text      = 0x00001000-0x001ab848

  rodata    = 0x001ab848-0x0023e518

  bss       = 0x0023f000-0x00252af0

  data      = 0x00252af0-0x0026e000

    stack   = 0x0026c000-0x0026e000

  init      = 0x0026e000-0x00ad0000

  available = 0x00ad0000-0x03e00000

  DMA Zone  = 0x03e00000-0x04000000

Hardware Trace active and enabled

Boot Mode: 1

Blackfin support (C) 2004-2010 Analog Devices, Inc.

Compiled for ADSP-BF548 Rev 0.2

Blackfin Linux support by http://blackfin.uclinux.org/

Processor Speed: 525 MHz core clock and 131 MHz System Clock

NOMPU: setting up cplb tables

Instruction Cache Enabled for CPU0

  External memory: cacheable in instruction cache

  L2 SRAM        : uncacheable in instruction cache

Data Cache Enabled for CPU0

  External memory: cacheable (write-through) in data cache

  L2 SRAM        : uncacheable in data cache

Built 1 zonelists in Zone order, mobility grouping off.  Total pages: 15748

Kernel command line: root=/dev/mtdblock0 rw clkin_hz=25000000 earlyprintk=serial,uart1,57600 console=tty0 console=ttyBF1,57600 if

PID hash table entries: 256 (order: -2, 1024 bytes)

Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)

Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)

Memory available: 51808k/65536k RAM, (8584k init code, 1706k kernel code, 778k data, 2048k dma, 612k reserved)


Configuring Blackfin Priority Driven Interrupts

console [ttyBF1] enabled, bootconsole disabled

console [ttyBF1] enabled, bootconsole disabled

Calibrating delay loop... 1044.48 BogoMIPS (lpj=2088960)

pid_max: default: 32768 minimum: 301

Mount-cache hash table entries: 512

Blackfin Scratchpad data SRAM: 4 KB

Blackfin L1 Data A SRAM: 16 KB (16 KB free)

Blackfin L1 Data B SRAM: 16 KB (16 KB free)

Blackfin L1 Instruction SRAM: 48 KB (41 KB free)

Blackfin L2 SRAM: 128 KB (128 KB free)

NET: Registered protocol family 16

Blackfin DMA Controller

ezkit_init(): registering device resources

bio: create slab <bio-0> at 0

SCSI subsystem initialized

spi spi0.2: Warning: SPI CPHA not set: Slave Select not under software control!

See Documentation/blackfin/bfin-spi-notes.txt

bfin-spi bfin-spi.0: Blackfin on-chip SPI Controller Driver, Version 1.0, regs@ffc00500, dma channel@4

bfin-spi bfin-spi.1: Blackfin on-chip SPI Controller Driver, Version 1.0, regs@ffc02300, dma channel@5

i2c-bfin-twi i2c-bfin-twi.0: Blackfin BF5xx on-chip I2C TWI Contoller, regs_base@ffc00700

i2c-bfin-twi i2c-bfin-twi.1: Blackfin BF5xx on-chip I2C TWI Contoller, regs_base@ffc02200

Advanced Linux Sound Architecture Driver Version 1.0.24.

NET: Registered protocol family 2

IP route cache hash table entries: 1024 (order: 0, 4096 bytes)

TCP established hash table entries: 2048 (order: 2, 16384 bytes)

TCP bind hash table entries: 2048 (order: 1, 8192 bytes)

TCP: Hash tables configured (established 2048 bind 2048)

TCP reno registered

UDP hash table entries: 256 (order: 0, 4096 bytes)

UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)

NET: Registered protocol family 1

debug-mmrs: setting up Blackfin MMR debugfs

msgmni has been set to 101

io scheduler noop registered (default)

bf54x-lq043: FrameBuffer initializing...

dma_alloc_init: dma_page @ 0x02b09000 - 512 pages at 0x03e00000

bfin-uart: Blackfin serial driver

bfin-uart.1: ttyBF1 at MMIO 0xffc02000 (irq = 48) is a BFIN-UART

bfin-otp: initialized

brd: module loaded

register bfin atapi driver

scsi0 : pata-bf54x

ata1: PATA max UDMA/66 irq 68

physmap platform flash device: 02000000 at 20000000

physmap-flash.0: Found 1 x16 devices at 0x0 in 16-bit bank. Manufacturer ID 0x000089 Chip ID 0x00881e

Intel/Sharp Extended Query Table at 0x010A

Intel/Sharp Extended Query Table at 0x010A

Intel/Sharp Extended Query Table at 0x010A

Intel/Sharp Extended Query Table at 0x010A

Intel/Sharp Extended Query Table at 0x010A

Using buffer write method

Using auto-unlock on power-up/resume

cfi_cmdset_0001: Erase suspend on write enabled

Using physmap partition information

Creating 5 MTD partitions on "physmap-flash.0":

0x000000000000-0x000000080000 : "bootloader(nor)"

0x000000080000-0x000000480000 : "linux kernel(nor)"

0x000000480000-0x000000fe0000 : "file system(nor)"

0x000000fe0000-0x000000ff8000 : "config(nor)"

0x000000ff8000-0x000001000000 : "u-boot env(nor)"

m25p80 spi0.1: m25p16 (2048 Kbytes)

Creating 2 MTD partitions on "m25p80":

0x000000000000-0x000000080000 : "bootloader(spi)"

0x000000080000-0x000000200000 : "linux kernel(spi)"

BF5xx on-chip NAND FLash Controller Driver, Version 1.2 (c) 2007 Analog Devices, Inc.

bf5xx-nand bf5xx-nand.0: data_width=8, wr_dly=3, rd_dly=3

NAND device: Manufacturer ID: 0x20, Chip ID: 0xda (ST Micro NAND 256MiB 3,3V 8-bit)

Creating 3 MTD partitions on "NAND 256MiB 3,3V 8-bit":

0x000000000000-0x000000080000 : "bootloader(nand)"

0x000000080000-0x000000480000 : "linux kernel(nand)"

0x000000480000-0x000010000000 : "file system(nand)"

CAN device driver interface

smsc911x: Driver version 2008-10-21

smsc911x-mdio: probed

smsc911x smsc911x.0: eth0: attached PHY driver [Generic PHY] (mii_bus:phy_addr=0:01, irq=-1)

smsc911x smsc911x.0: eth0: MAC Address: 00:e0:22:fe:bf:4c

input: bf54x-keys as /devices/platform/bf54x-keys/input/input0

ata1.00: ATA-7: FUJITSU MHW2040AT, 0000000B, max UDMA/100

ata1.00: 78140160 sectors, multi 16: LBA

rtc-bfin rtc-bfin: rtc core: registered rtc-bfin as rtc0

i2c /dev entries driver

bfin-wdt: initialized: timeout=20 sec (nowayout=0)

ata1.00: configured for UDMA/66

blk_queue_max_segments: set to minimum 1

scsi 0:0:0:0: Direct-Access     ATA      FUJITSU MHW2040A 0000 PQ: 0 ANSI: 5

ALSA device list:

  No soundcards found.

TCP cubic registered

NET: Registered protocol family 17

sd 0:0:0:0: [sda] 78140160 512-byte logical blocks: (40.0 GB/37.2 GiB)

sd 0:0:0:0: [sda] Write Protect is off

can: controller area network core (rev 20090105 abi 8)

sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA

NET: Registered protocol family 29

can: raw protocol (rev 20090105)

can: broadcast manager protocol (rev 20090105 t)

rtc-bfin rtc-bfin: setting system clock to 1970-01-06 08:03:46 UTC (461026)

sda: sda1 sda2

sd 0:0:0:0: [sda] Attached SCSI disk

smsc911x smsc911x.0: eth0: SMSC911x/921x identified at 0x24000000, IRQ: 175

IP-Config: Complete:

     device=eth0, addr=, mask=, gw=,

     host=bf548-ezkit, domain=, nis-domain=(none),

     bootserver=, rootserver=, rootpath=

Freeing unused kernel memory: 8584k freed


        a8888b.           / Welcome to the uClinux distribution \

       d888888b.         /       _     _                         \

       8P"YP"Y88        /       | |   |_|            __  __ (TM)  |

       8|o||o|88  _____/        | |    _ ____  _   _ \ \/ /       |

       8'    .88       \        | |   | |  _ \| | | | \  /        |

       8`._.' Y8.       \       | |__ | | | | | |_| | /  \        |

      d/      `8b.       \      \____||_|_| |_|\____|/_/\_\       |

     dP   .    Y8b.       \   For embedded processors including   |

    d8:'  "  `::88b        \    the Analog Devices Blackfin      /

   d8"         'Y88b        \___________________________________/

  :8P    '      :888

   8a.   :     _a88P         For further information, check out:

._/"Yaa_:   .| 88P|            - http://blackfin.uclinux.org/

\    YP"    `| 8P  `.          - http://docs.blackfin.uclinux.org/

/     \.___.d|    .'           - http://www.uclinux.org/

`--..__)8888P`._.'  jgs/a:f    - http://www.analog.com/blackfin


Have a lot of fun...



BusyBox v1.18.4 (2011-11-30 18:07:05 CST) hush - the humble shell


root:/> version

kernel:    Linux release 3.0.8-ADI-2011R1-svn10231, build #87 Wed Nov 30 18:09:20 CST 2011

toolchain: bfin-uclinux-gcc release gcc version 4.3.5 (ADI-2011R1-RC2)

user-dist: release svn-10530, build #29 Wed Nov 30 18:08:32 CST 2011


root:/> modprobe bfin-can

bfin_can bfin_can.0: bfin_can device registered(&reg_base=ffc02a00, rx_irq=54, tx_irq=55, err_irq=39, sclk=131250000)

bfin_can bfin_can.1: bfin_can device registered(&reg_base=ffc03200, rx_irq=77, tx_irq=78, err_irq=69, sclk=131250000)


root:/> lsmod

Module                  Size  Used by

bfin_can                4524  0


root:/> ip link set can0 type can bitrate 1000000

bfin_can bfin_can.0: bitrate error 0.5%

bfin_can bfin_can.0: setting CLOCK=0x002b TIMING=0x0000

root:/> cansend can0 123#11223344

write: Network is down





--- steven miao                                              2012-01-16 06:07:25

fixed in socket can, bit-timing calculate use first found bit rate prescaler












File Name     File Type     File Size     Posted By

config.config.canbus    application/octet-stream    52145    Vivi Li

config.linux.canbus    application/octet-stream    43655    Vivi Li