On Saturday 07 July 2007, Olof Johansson wrote:
> On Sat, Jul 07, 2007 at 01:49:00PM +0400, Vitaly Bordug wrote:
> >
> > This updates relevant platform code
> > (freescale mpc8349itx target) to make the CompactFlash
> > work in TrueIDE mode.
>
> Shouldn't you be writing a PCMCIA driver instead for the CF, so it
> handles other devices as well? Then you get storage "for free", as
> well as hotplug, etc.
CF memory cards can be in either TrueIDE mode or PCMCIA mode. If you
only need to support memory cards, you should always use True-IDE
mode, because that offers a _much_ higher throughput with PIO mode
6 (25 MB/s) or UDMA mode 6 (133MB/s), compared to the PIO mode 0
(3.3 MB/s) in PCMCIA mode.
Of course, if the bus can only sustain PIO mode 0 anyway, you can
just as well do a PCMCIA driver, and get the ability to plug in
other cards, e.g. wlan or modem cards.
Arnd <><
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
