2009-02-24 20:37:42 spi_mmc problem
zhao kaituo (AFGHANISTAN)
Message: 69847
hi , I am engaging in stabilizing SPI_MMC card on the ezkit_BF561 board recently,
I find that when the SPI clock was set to 20MHZ, and I used mount -t vfat /dev/spi_mmc /mnt/mmc,
when I copyed datas into the MMC card through the FTP on the board,
the uclinux OS will esaily crash,but when added -o sync,the speed turned much too slow,
I was puzzled by this question for a week around,could you tell me how to fix it?Is there any problem on the drivers of SPI_MMC ?
Thanks ,
jay
QuoteReplyEditDelete
2009-02-24 22:30:07 Re: spi_mmc problem
Yi Li (CHINA)
Message: 69848
Jay,
What is the crash message you saw? (I assumed you are using 2008R1.5-RC3, this is the release we support).
"mount -o sync" should not be used, This bypasses pagecache for every single file I/O.
-Yi
QuoteReplyEditDelete
2009-02-24 22:37:02 Re: spi_mmc problem
zhao kaituo (AFGHANISTAN)
Message: 69849
Jay,
What is the crash message you saw? (I assumed you are using 2008R1.5-RC3, this is the release we support).
"mount -o sync" should not be used, This bypasses pagecache for every single file I/O.
-Yi
---
新建 文本文档.txt
QuoteReplyEditDelete
2009-02-24 22:39:09 Re: spi_mmc problem
zhao kaituo (AFGHANISTAN)
Message: 69850
I'm sorry , the last post was wrong,the system didn't crashed,but only the network card crashed,then the FTP on the
board didn't work.(YES,I'm using 2008R1.5-RC3)
Thanks ,
jay
QuoteReplyEditDelete
2009-02-24 22:43:24 Re: spi_mmc problem
zhao kaituo (AFGHANISTAN)
Message: 69851
IF the datas are huge,the network card will soon crash,and it will work well while the data is small.My card capacity is 1G.
Thanks ,
jay
---
QuoteReplyEditDelete
2009-02-24 23:08:57 Re: spi_mmc problem
Yi Li (CHINA)
Message: 69852
What is the error messsage when "the network card crash"?
-Yi
QuoteReplyEditDelete
2009-02-25 00:34:11 Re: spi_mmc problem
zhao kaituo (AFGHANISTAN)
Message: 69854
The message is the datas copied into the MMC often stoped at 8% or so,and then I used"dmesg",it showed "check staus failed :187(the number is not the same every time)",and the FTP on the target board cannot connecting any more,but the system seemed still works,I can still do sth in the uClinux.I download all the necessary tools and fies from this site.
QuoteReplyEditDelete