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RE: PCMCIA access problem
- To: "'eCos'" <ecos-discuss at sources dot redhat dot com>
- Subject: [ECOS] RE: PCMCIA access problem
- From: "Trenton D. Adams" <tadams at extremeeng dot com>
- Date: Mon, 18 Jun 2001 14:30:39 -0600
- Organization: Extreme Engineering
I was finally able to get the registers of the PCMCIA controller to
their default values by doing all the required steps.
I then had a problem writing to the registers. I resolved this by
reading information about the fact that the CL-PS6700 requires 1-byte or
4-byte accesses only. 2-byte access to the registers only works with a
read and not a write.
Anyhow, now I'm interested in knowing more information about the PCMCIA
driver interface to the kernel. Gary Thomas would probably be the best
for answers on this topic. Anyhow, I'll compile a list of questions
over the next couple of days, and write another email to the list at
that time.
> -----Original Message-----
> From: Trenton D. Adams [mailto:tadams@extremeeng.com]
> Sent: Friday, June 15, 2001 9:25 AM
> To: 'eCos'
> Subject: PCMCIA access problem
>
>
> I was able to enable the PCMCIA slot 1 for the CL-PS6700
> PCMCIA controller on the EDB7211-2 board, but I can't write
> to the registers. I can read them, but not write to them.
> Is there something else I have to do for initialization
> that's standard with PCMCIA controllers before I read or
> write the registers?
>