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dt-bindings: mtd: gpmc: Fix the ECC bytes vs. OOB bytes equation
[ Upstream commit 778cb8e39f
]
"PAGESIZE / 512" is the number of ECC chunks.
"ECC_BYTES" is the number of bytes needed to store a single ECC code.
"2" is the space reserved by the bad block marker.
"2 + (PAGESIZE / 512) * ECC_BYTES" should of course be lower or equal
than the total number of OOB bytes, otherwise it won't fit.
Fix the equation by substituting s/>=/<=/.
Suggested-by: Ryan J. Barnett <ryan.barnett@collins.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/linux-mtd/20210610143945.3504781-1-miquel.raynal@bootlin.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -123,7 +123,7 @@ on various other factors also like;
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so the device should have enough free bytes available its OOB/Spare
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area to accommodate ECC for entire page. In general following expression
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helps in determining if given device can accommodate ECC syndrome:
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"2 + (PAGESIZE / 512) * ECC_BYTES" >= OOBSIZE"
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"2 + (PAGESIZE / 512) * ECC_BYTES" <= OOBSIZE"
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where
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OOBSIZE number of bytes in OOB/spare area
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PAGESIZE number of bytes in main-area of device page
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