[#5408] sometimes underrun happens for audio on bf527-ezkit

Submitted By: Vivi Li

Open Date

2009-07-29 05:23:33

Priority:

Medium Assignee:

Cliff Cai

Status:

Open Fixed In Release:

N/A

Found In Release:

2009R1-RC6 Release:

Category:

Audio Board:

N/A

Processor:

BF527 Silicon Revision:

Is this bug repeatable?:

Yes Resolution:

Not reproducible

Uboot version or rev.:

Toolchain version or rev.:

gcc4.1_2009r1-rc9

App binary format:

N/A

Summary: sometimes underrun happens for audio on bf527-ezkit

Details:

When vrec|vplay for ssm2602 on bf527-ezkit, sometimes underrun happens.

I see this twice in recent test but haven\\\\\\\'t got a method to reproduce it.

Linux version 2.6.28.10-ADI-2009R1-svn7084 (test@uboot30-527ezkit) (gcc version 4.1.2 (ADI svn)) #85 Wed Jul 29 10:09:56 GMT 2009

bootconsole [early_shadow0] enabled

bootconsole [early_BFuart0] enabled

early printk enabled on early_BFuart0

Board Memory: 64MB

Kernel Managed Memory: 64MB

Memory map:

fixedcode = 0x00000400-0x00000490

text = 0x00001000-0x0012d3d0

rodata = 0x0012d3d0-0x0018a36c

bss = 0x0018b000-0x0019c2a4

data = 0x0019c2a4-0x001ae000

stack = 0x001ac000-0x001ae000

init = 0x001ae000-0x007bc000

available = 0x007bc000-0x03dff000

DMA Zone = 0x03e00000-0x04000000

Hardware Trace Active and Enabled

Boot Mode: 9

Compiled for ADSP-BF527 Rev 0.0

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

Data Cache Enabled for CPU0 (write-back)

Built 1 zonelists in Zone order, mobility grouping off. Total pages: 15747

Kernel command line: root=/dev/mtdblock0 rw earlyprintk=serial,uart0,57600, console=ttyBF0,57600 ip=10.100.4.50:10.100.4.174:10.100.4.174:255.255.255.0:bf527-ezkit:eth0:off

Configuring Blackfin Priority Driven Interrupts

PID hash table entries: 256 (order: 8, 1024 bytes)

console handover:boot [early_BFuart0] boot [early_shadow0] -> real [ttyBF0]

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

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

Memory available: 54996k/65536k RAM, (6200k init code, 1200k kernel code, 516k data, 2048k dma, 572k reserved)

Calibrating delay loop... 1046.52 BogoMIPS (lpj=2093056)

Security Framework initialized

Mount-cache hash table entries: 512

Blackfin Scratchpad data SRAM: 4 KB

Blackfin L1 Data A SRAM: 16 KB (15 KB free)

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

Blackfin L1 Instruction SRAM: 48 KB (42 KB free)

net_namespace: 288 bytes

NET: Registered protocol family 16

Blackfin DMA Controller

ezkit_init(): registering device resources

SCSI subsystem initialized

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

NET: Registered protocol family 1

msgmni has been set to 107

io scheduler noop registered

io scheduler anticipatory registered (default)

io scheduler cfq registered

bfin-t350mcqb: 320x240 24-bit RGB FrameBuffer initializing...

dma_alloc_init: dma_page @ 0x03a3c000 - 512 pages at 0x03e00000

bfin-otp: initialized

Serial: Blackfin serial driver

bfin-uart.1: ttyBF0 at MMIO 0xffc02000 (irq = 31) is a BFIN-UART

brd: module loaded

bfin_mii_bus: probed

bfin_mac: attached PHY driver [Generic PHY] (mii_bus:phy_addr=0:03, irq=-1, mdc_clk=2500000Hz(mdc_div=25)@sclk=131MHz)

bfin_mac bfin_mac.0: Blackfin on-chip Ethernet MAC driver, Version 1.1

Driver \\\\\\\'sd\\\\\\\' needs updating - please use bus_type methods

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

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

Advanced Linux Sound Architecture Driver Version 1.0.18rc3.

ALSA device list:

No soundcards found.

TCP cubic registered

NET: Registered protocol family 17

rtc-bfin rtc-bfin: setting system clock to 1970-01-01 09:59:36 UTC (35976)

IP-Config: Complete:

device=eth0, addr=10.100.4.50, mask=255.255.255.0, gw=10.100.4.174,

host=bf527-ezkit, domain=, nis-domain=(none),

bootserver=10.100.4.174, rootserver=10.100.4.174, rootpath=

Freeing unused kernel memory: 6200k 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 v1.13.4 (2009-07-28 16:02:41 GMT) built-in shell (msh)

Enter \\\\\\\'help\\\\\\\' for a list of built-in commands.

root:/> versiPHY: 0:03 - Link is Up - 100/Full

kernel: Linux release 2.6.28.10-ADI-2009R1-svn7084, build #85 Wed Jul 29 10:09:56 GMT 2009

toolchain: bfin-linux-uclibc-gcc release gcc version 4.1.2 (ADI svn)

user-dist: release svn-8591, build #19 Wed Jul 29 10:09:19 GMT 2009

root:/>

root:/> modprobe i2c-bfin-twi; modprobe snd-ssm2602

i2c-bfin-twi i2c-bfin-twi.0: Blackfin BF5xx on-chip I2C TWI Contoller, regs_base@ffc01400

ASoC version 0.13.2

dma rx:3 tx:4, err irq:15, regs:ffc00800

ssm2602 Audio Codec 0.1<6>asoc: SSM2602 <-> bf5xx-i2s mapping ok

root:/> lsmod

Module Size Used by

snd_ssm2602 1292 0

snd_soc_bf5xx_i2s 2128 1 snd_ssm2602

snd_bf5xx_i2s 2668 1 snd_ssm2602

snd_soc_bf5xx_sport 10480 3 snd_ssm2602,snd_soc_bf5xx_i2s,snd_bf5xx_i2s

snd_soc_ssm2602 8160 1 snd_ssm2602

snd_soc_core 22060 2 snd_bf5xx_i2s,snd_soc_ssm2602

ac97_bus 832 1 snd_soc_core

i2c_bfin_twi 5248 0

root:/> vrec -w -S -b 16 -s 48000 -t 5|vplay

Recording WAVE : 16 bit, Speed 48000 Hz Stereo ...

Playing WAVE : 16 bit, Speed 48000 Hz Stereo ...

sport status error: TUVF

root:/>

Follow-ups

--- Vivi Li 2009-07-30 05:06:08

When I test ad1981 on bf527-ezkit, I also see underrun.

arecord -t wav -c 1 -f S16_LE -r 48000 -d 5 |aplay

Recording WAVE 'stdin' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono

Playing WAVE 'stdin' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono

sport status error: TUVF

root:/>

--- Cliff Cai 2009-08-11 03:01:22

it\'s hard to reproduce it.

Cliff

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