[U-Boot-Users] u-boot hangs while accesing pcmcia socket address.

[U-Boot-Users] u-boot hangs while accesing pcmcia socket address.

[Girish]

Hi all ,
    I am writing a driver for 256MB Micron Nand flash On PXA270 board 
through PCMCIA interface as decribed in 
"http://download.intel.com/design/pca/applicationsprocessors/applnots/28014402.pdf". 
So I am trying it out in u-boot first. I wrote a u-boot command called 
mynand which writes the command at 0x30000000 (socket1 of pcmcia), data 
at 0x20000000(socket0 of pcmcia) and address at 0x20000040(i.e 
Address6=ALE). But u-boot hangs whenever I try to access pcmcia socket 
addresses i.e. 0x20000000 or 0x30000000. Please help me in this regard.

Thanks in advance.

regards
Girish A J

----------------------------------------------------------------------
"When Ability Ends; Faith Begins....

Girish A J (girish.a at geodesic.com) 
Associate - Systems,		   Ph: (80) 2361 8184-86   Ext 135
PicoPeta Simputers Pvt Ltd.        Fax:(80) 2361 7568
146 5th Cross, RMV Extension,     
Bangalore - 560 080.               
URL  http://www.geodesic.com
-------------------------------------------------------------------------- 

[U-Boot-Users] u-boot hangs while accesing pcmcia socket address.

[Girish]

Girish wrote:

>Hi all ,
>    I am writing a driver for 256MB Micron Nand flash On PXA270 board 
>through PCMCIA interface as decribed in 
>"http://download.intel.com/design/pca/applicationsprocessors/applnots/28014402.pdf". 
>So I am trying it out in u-boot first. I wrote a u-boot command called 
>mynand which writes the command at 0x30000000 (socket1 of pcmcia), data 
>at 0x20000000(socket0 of pcmcia) and address at 0x20000040(i.e 
>Address6=ALE). But u-boot hangs whenever I try to access pcmcia socket 
>addresses i.e. 0x20000000 or 0x30000000. Please help me in this regard.
>  
>
 And I did "md 0x20000000" It too hangs the u-boot. Please suggest me 
how to go on further.
 Waiting for your responses.

Regards
Girish

----------------------------------------------------------------------
"When Ability Ends; Faith Begins....

Girish A J (girish.a at geodesiconline.com) 
Associate - Systems,		     Ph: (80) 2361 8184-86   Ext 135
PicoPeta Simputers Pvt Ltd.        Fax:(80) 2361 7568
146 5th Cross, RMV Extension,     
Bangalore - 560 080.               
URL  http://www.picopeta.com
-------------------------------------------------------------------------- 

[U-Boot-Users] u-boot hangs while accesing pcmcia socket address.

[Girish]

Girish wrote:

> Girish wrote:
>
>> Hi all ,
>>    I am writing a driver for 256MB Micron Nand flash On PXA270 board 
>> through PCMCIA interface as decribed in 
>> "http://download.intel.com/design/pca/applicationsprocessors/applnots/28014402.pdf". 
>> So I am trying it out in u-boot first. I wrote a u-boot command 
>> called mynand which writes the command at 0x30000000 (socket1 of 
>> pcmcia), data at 0x20000000(socket0 of pcmcia) and address at 
>> 0x20000040(i.e Address6=ALE). But u-boot hangs whenever I try to 
>> access pcmcia socket addresses i.e. 0x20000000 or 0x30000000. Please 
>> help me in this regard.
>>  
>>
> And I did "md 0x20000000" It too hangs the u-boot. Please suggest me 
> how to go on further.
> Waiting for your responses.
>
  Hi all,
       the hang is because of RDY pin; which should be connected to 
nPWAIT of PCMCIA interface. We didnt do it before.
Now we can able to access the address 0x20000000(PCMCIA's Socket 0).
    Hope this info might help somebody who has same problem. :-)


Regards
Girish