[PATCH 3/4] NAND: FSL-UPM: Add wait flags to support board/chip specific delays
avorontsov at ru.mvista.com
Tue Mar 17 15:01:26 EDT 2009
On Tue, Mar 17, 2009 at 10:12:21AM +0100, Wolfgang Grandegegr wrote:
> From: Wolfgang Grandegger <wg at grandegger.com>
> The NAND flash on the TQM8548_BE modules requires a short delay after
> running the UPM pattern. The TQM8548_BE requires a further short delay
> after writing out a buffer. Normally the R/B pin should be checked, but
> it's not connected on the TQM8548_BE. The existing driver uses similar
> fixed delay points. To manage these extra delays in a more general way,
> I introduced the "wait_flags" field allowing the board-specific driver
> to specify various types of extra delay.
> Signed-off-by: Wolfgang Grandegger <wg at grandegger.com>
Just a nitpick...
> + prop = of_get_property(ofdev->node, "wait-flags", &size);
> + if (prop && size == sizeof(uint32_t))
> + fun->wait_flags = *prop;
> + else
> + fun->wait_flags = (FSL_UPM_WAIT_RUN_PATTERN |
> + FSL_UPM_WAIT_WRITE_BYTE);
No need for parenthesis here.
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