Thread (46 messages) 46 messages, 3 authors, 2012-08-21
STALE5053d

[PATCH v5 3/3] ARM: OMAP2+: onenand: prepare for gpmc driver migration

From: Mohammed, Afzal <hidden>
Date: 2012-07-02 10:04:12
Also in: linux-omap

Hi Jon,

On Fri, Jun 29, 2012 at 19:45:37, Hunter, Jon wrote:
On 06/29/2012 01:15 AM, Mohammed, Afzal wrote:
quoted
I have a different opinion, even with the existing code, with the default
timings for onenand, Numonyx is working in async mode, reason being that
frequency is being obtained with read operation executed in async mode
(later based on this frequency, code calculates sync timings & then set
to sync mode)
I don't follow "frequency is being obtained with read operation executed
in async mode". Can you give a code reference?
In the present code, for sync mode, omap2_onenand_set_sync_mode() invokes
omap2_onenand_set_async_mode() initially, to set onenand & gpmc to async mode,
then invokes omap2_onenand_get_freq() to get frequency, here finding out
frequency from onenand is done by reading relevant onenand register
in async mode.

Regards
Afzal
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