Commit 5b0d4d7c authored Nov 18, 2008 by Matt Reimer Committed by David Woodhouse Jan 05, 2009

[MTD] [NAND] pxa3xx: convert from ns to clock ticks more accurately



The various fields in NDTR{01} are in units of clock ticks minus one, but the
ns2cycle macro mistakenly adds one, inflating the number of clock ticks and
making it impossible to set any of these fields to zero.

Signed-off-by: Matt Reimer <mreimer@vpop.net>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

parent 7f9938d0

drivers/mtd/nand/pxa3xx_nand.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -298,7 +298,7 @@ static struct pxa3xx_nand_flash *builtin_flash_types[] = {
		#define NDTR1_tAR(c) (min((c), 15) << 0)

		/* convert nano-seconds to nand flash controller clock cycles */
		#define ns2cycle(ns, clk) (int)(((ns) * (clk / 1000000) / 1000) + 1)
		#define ns2cycle(ns, clk) (int)(((ns) * (clk / 1000000) / 1000) - 1)

		static void pxa3xx_nand_set_timing(struct pxa3xx_nand_info *info,
		const struct pxa3xx_nand_timing *t)