Re: 8bit/16 bit data size

On Fri, Jun 21, 2002 at 10:01:12AM -0700, Sanjay Jain wrote:
> 
> I am working on a MIPS based embedded systems which uses PCI based PD6729
> PCMCIA controller. I have been able to compile and uses standard Linux
> pcmcia package.
> 
> On this system, I can read CIS only when I use cis_width=1 option. As I
> understand this option is required when host is 16bit but I don't see this
> option being used on x86 based PD6729 drivers(SuSE linux). Why would
> I need this cis_width=1 option on my MIPS platform while x86 based
> PCI-PCMCIA PD6729 doesn't need it?

To be honest, I'm afraid that I no longer remember the motivation
behind the cis_width parameter.

> I also noticed that default values for cmd, setup and recover registers are
> being set for 25Mhz PCI bus. Does someone has values for 33Mhz?

Multiplying by 33/25 seems like a reasonable strategy.

-- Dave


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