[ECOS] CF driver

[Andrea Acquaviva <aacquaviva@deis.unibo.it>]

Hi all,

I'm writing an eCos driver for the CF interface on my Strongarm 1100
based board. I'm modifing the same driver written for the assabet board.
The main difference is that the assabet driver uses the SA1110 to
program the pcmcia interface, while on my board there is not the SA1110
companion chip.

In the assabet driver the CF is programmed also by writing on the BCR
register of the SA1110, in particular the interesting instruction is:

 assabet_BCR(SA1110_BCR_CF_POWER |
                        SA1110_BCR_CF_RESET |
                        SA1110_BCR_CF_BUS,
                        SA1110_BCR_CF_POWER_ON |
                        SA1110_BCR_CF_RESET_ENABLE |
                        SA1110_BCR_CF_BUS_ON);

My question is: what's the mean of the SA1110_BCR_CF_BUS flag? Is it a
particular assabet feature or do it perform some actions on the
PCMCIA interface pins that I must be aware?

Thanks for your help,
Andrea.



--
Ing. Andrea Acquaviva
D.E.I.S. - Universita' di Bologna
V.le Risorgimento, 2    40136 BOLOGNA (ITALY)
Tel: (+39) 051 20 93787 Fax: (+39) 051 2093786