From: Brian Kuschak <bkuschak@yahoo.com>
To: linux-mtd@lists.infradead.org
Subject: async page mode flash support?
Date: Fri, 12 Sep 2008 12:32:57 -0700 (PDT) [thread overview]
Message-ID: <674997.8945.qm@web38908.mail.mud.yahoo.com> (raw)
Do the current CFI physmap flash drivers (2.6.18+) support NOR flash configured to operate in async page mode?
When I enable async page mode access in the memory controller, the CFI probe fails. I can verify on a logic analyzer and BDI-2000 that the CPU is doing an 8-word (16 byte) burst read from the flash. My bootrom and BDI-2K verify that the data is in fact transferred properly (csums match in regular and page-mode reads). However, linux fails the cfi probe. It looks like the CFI query commands are in fact sent as single-word cycles, not burst mode. (This is as it should be).
Anyone else successful using page-mode flash?
Thx,
Brian
reply other threads:[~2008-09-12 19:33 UTC|newest]
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