From: Gregg Nemas <gnemas@gmail.com>
To: linuxppc-embedded@ozlabs.org
Subject: Setting IDE mode to PIO for compact flash
Date: Wed, 30 Nov 2005 05:12:30 -0500 [thread overview]
Message-ID: <8e84e0f20511300212n2cb588aevafc08aa4b82c83c0@mail.gmail.com> (raw)
I have a compact flash connected to a PPC440GP processor in "true IDE"
mode. The DMA signals are not connected, so the device must be used in
PIO mode.
However, when I issue hdparm -i, it indicates that the current mode is
DMA mode mdma2, and I think this must be why I am getting "lost
interrupt" messages. Unfortunately, when I try to set the mode to PIO
using "hdparm -p1" or "hdparm -X9", it seems to have no effect.
What do I need to do to get the drive to be set to use PIO?
I amusing linux 2.6.12.3.
Thanks.
Gregg
reply other threads:[~2005-11-30 10:12 UTC|newest]
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