2009-02-10 04:34:37     Does Sd card with spi framework is ok in bf527?

Document created by Aaronwu Employee on Aug 13, 2013
Version 1Show Document
  • View in full screen mode

2009-02-10 04:34:37     Does Sd card with spi framework is ok in bf527?

Bill Xie (CHINA)

Message: 69196   

 

Hi,

 

  Because multiple devices need spi bus. sd card select spi framwork mode.When board run this mode,/proc/spi_mmc and /dev/spi_mmc are not exist. I search the forums that many people  encounter this problem,but not found way to solve this problem.Some people point to bugs with framework.I doubt  that sd card with SPI framework is feasibiltiy.

 

--Bill

QuoteReplyEditDelete

 

 

2009-02-10 11:32:12     Re: Does Sd card with spi framework is ok in bf527?

Mike Frysinger (UNITED STATES)

Message: 69207   

 

the SPI/MMC device should work on any Blackfin SPI bus.  the version in the 2008R1.5 release is known to be broken, but that should have all been resolved in svn trunk.

QuoteReplyEditDelete

 

 

2009-02-10 13:34:27     Re: Does Sd card with spi framework is ok in bf527?

Mikael Eriksson (SWEDEN)

Message: 69213   

 

Fresh from trunk it would not hop to life for me neither but setting .chip_select in spi_mmc segment in the  spi_board_info-structure to 1(Framework chip select) made my day. I'm working on the 537, but I figure the SPI framework should be set up the same way on the 527.

QuoteReplyEditDelete

 

 

2009-02-10 14:33:35     Re: Does Sd card with spi framework is ok in bf527?

Mike Frysinger (UNITED STATES)

Message: 69214   

 

i dont think we've tested it on the bf527-ezkit platform, but i dont see any reason why it shouldnt work.  we'll have somebody look at it to double check.

QuoteReplyEditDelete

 

 

2009-02-10 20:10:09     Re: Does Sd card with spi framework is ok in bf527?

Bill Xie (CHINA)

Message: 69224   

 

 

 

   Thank you for your help.

 

-Bill

Attachments

    Outcomes