[#5948] Disable anomaly 456 on bf526-ezbrd, gadget zero bulk test fails for dma mode
Submitted By: Vivi Li
Open Date
2010-03-05 05:39:44
Priority:
Medium Assignee:
Bob Liu
Status:
Open Fixed In Release:
N/A
Found In Release:
2010R1 Release:
Category:
N/A Board:
N/A
Processor:
BF526 Silicon Revision:
Is this bug repeatable?:
Yes Resolution:
Under Debugging
Uboot version or rev.:
Toolchain version or rev.:
gcc4.3-2010_Jan_22
App binary format:
N/A
Summary: Disable anomaly 456 on bf526-ezbrd, gadget zero bulk test fails for dma mode
Details:
Gadget zero bulk test fails for dma mode when anomaly 456 is disabled on bf526-ezbrd.
On target:
--
root:/> modprobe g_zero^M
zero gadget: Gadget Zero, version: Cinco de Mayo 2008^M
zero gadget: zero ready^M
root:/> zero gadget: high speed config #3: source/sink^M
lsmod^M
Module Size Used by^M
g_zero 8595 0 ^M
root:/>
--
On host:
--
uclinux63-527-usbdev:..testsuites/usbdev # lsusb|grep -i "Gadget Zero"|awk '{print $2" "$4}'
005 061:
gadget_bus=005;gadget_dev=061
uclinux63-527-usbdev:..testsuites/usbdev # sudo ./src/testusb -D /proc/bus/usb/005/061 -t1
unknown speed /proc/bus/usb/005/061
(hangs here)
--
Follow-ups
--- Jorge Manguane 2010-03-09 13:43:45
I was checking the file config.linux.usbdev.dma attached below. It lists a max
SCLK of 133 MHz and min SCLK of 27 MHz. I'm assuming the USB tests are run with
an SCLK of: 30 MHz < SCLK < 100 MHz. the BF526 can only operate with an
SCLK of 100 MHz or below.
thanks,
Jorge
--- Robin Getz 2010-03-09 15:53:14
Jorge:
Where do you read that? The latest datasheet I have access to:
rev A, Nov 2009
Table 14. Maximum SCLK Conditions—ADSP-BF522/ADSP-BF524/ADSP-BF526
Processors. Still lists TBD.
?
The only place that it does say - is Table 35. SDRAM Interface Timing - where
it has a 12.5 ns min CLKOUT Period. (which is 80MHz (max), not 100).
But the kernel is set up to not program the clocks (that is the
"CONFIG_BFIN_KERNEL_CLOCK is not set" part) - so it will be whatever
the bootloader sets things to.
The bootloader sets things to 400MHz CCLK, and 80 MHz SCLK.
-Robin
--- Bob Liu 2010-07-22 04:48:08
I have send a mail to 'processor.support@analog.com'.
It seems that anomaly 456 is still not fixed on bf526 v0.2.
Files
Changes
Commits
Dependencies
Duplicates
Associations
Tags
File Name File Type File Size Posted By
config.linux.usbdev.dma application/octet-stream 37916 Vivi Li
anomaly.diff application/octet-stream 906 Vivi Li