[#4116] Under run error occurs sometimes in BF548-EZKIT in trunk

Submitted By: Vivi Li

Open Date

2008-05-20 05:40:56 Close Date

2008-05-21 22:56:54

Priority:

Medium Assignee:

Cliff Cai

Status:

Closed Fixed In Release:

N/A

Found In Release:

N/A Release:

Category:

N/A Board:

N/A

Processor:

N/A Silicon Revision:

Is this bug repeatable?:

Yes Resolution:

Fixed

Uboot version or rev.:

Toolchain version or rev.:

08r1-rc8

App binary format:

N/A

Summary: Under run error occurs sometimes in BF548-EZKIT in trunk

Details:

Under run error occurs sometimes in BF548-EZKIT with audio dirver AD1980.

It happens when record while play.

vrec -w -b 16 -s 11000 -t 8 aaa^M

Recording WAVE : 16 bit, Speed 11000 Hz Mono ...^M

root:/> vplay aaa &^M

Playing WAVE : 16 bit, Speed 11000 Hz Mono ...^M

295^M

root:/> ^M

root:/> vrec -w -b 16 -s 11000 -t 4 bbb^M

Recording WAVE sp16oritt Spstd at00usHz eonrr..or

: TUVF^M

root:/>

Follow-ups

--- Vivi Li 2008-05-21 22:56:51

Here is a workaround: set DMA to higer priority over core when build kernel.

Close this bug.

--- Robin Getz 2008-05-22 10:50:05

Vivi:

Which setting are you changing?

If a default setting needs to be changed, we should change it in the default

settings in svn - not in a test script.

-Robin

--- Cliff Cai 2008-05-22 22:37:38

This is a global setting,it will affect core's perfomance.

So,I think it's better to set it only if need.

Cliff

--- Robin Getz 2008-05-23 21:23:14

People can unset it as easy as they can set it.

I would rather the default config have audio working robustly.

-Robin

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