Re: [patch 2.6.29-davinci1 git] dm6446evm CF support

[Sergei Shtylyov <sshtylyov@ru.mvista.com>]

Hello.

David Brownell wrote:

>>>+config MACH_DAVINCI_EVM_CF
>>>+     bool "Use CompactFlash, not IDE drive"
>>>+     depends on MACH_DAVINCI_EVM && BLK_DEV_PALMCHIP_BK3710
>>>+     help
>>>+       Enable this if you want to use a CompactFlash card instead of
>>>+       an IDE/ATA drive.  The CF card will be used in "True IDE" mode.
>>>+
>>>+       At this writing, CF insert and remove events are not supported.
>>>+       Insert the CF at boot time, and leave it there until you power
>>>+       the system off.
>>>+

>>    This instruction is already obsolete. As I've already noted, IDE core now 
>>supports warm plug via sysfs, see Documentation/ide/warm-plug-howto.txt. One 
>>can plug and unplug any time, this just won't be automatically noticed by the 
>>kernel, so one will need to notify it.

> CF insert and remove events are very different from writing
> some sysfs files.  They are handled through a pcmcia_socket
> abstraction ... and are completely hands-off.  Socket events
> include card insert/removal detection, and socket operations
> include power on/off and reset.  I don't know that "true-IDE"
> links work through those sockets, though.

> That said ... I tried that manual workaround; it didn't work.

> So:  no, that instruction is far from obsolete.

    So, it would only work with real hard disks... sigh. Sorry for 
disinformation then -- I hoped warm plug could've been helpful for CF.

MBR, Sergei