Thread (15 messages) 15 messages, 4 authors, 2009-03-26

Re: [PATCH v3 2/4] NAND: FSL-UPM: Add wait flags to support board/chip specific delays

From: Anton Vorontsov <hidden>
Date: 2009-03-25 15:01:12

On Wed, Mar 25, 2009 at 11:08:19AM +0100, Wolfgang Grandegger wrote:
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" property allowing the board-specific driver
to specify various types of extra delay.

Signed-off-by: Wolfgang Grandegger <redacted>
Acked-by: Anton Vorontsov <redacted>

[...]
+	prop = of_get_property(ofdev->node, "fsl,upm-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;
I'd write it as
		fun->wait_flags = FSL_UPM_WAIT_RUN_PATTERN |
				  FSL_UPM_WAIT_WRITE_BYTE;

-- 
Anton Vorontsov
email: cbouatmailru@gmail.com
irc://irc.freenode.net/bd2
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