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Date: Wed, 05 May 2010 14:18:46 +0300 From: Artem Bityutskiy <dedekind1@...il.com> To: Kevin Cernekee <cernekee@...il.com> Cc: dwmw2@...radead.org, linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] mtd: nand_base: Extend NAND flash detection to new MLC chips On Mon, 2010-05-03 at 17:46 -0700, Kevin Cernekee wrote: > Some of the newer MLC devices have a 6-byte ID sequence in which > several field definitions differ from older chips in a manner that is > not backward compatible. For instance: > > Samsung K9GAG08U0M (5-byte sequence): ec d5 14 b6 74 > 4th byte, bits 1:0 encode the page size: 0=1KiB, 1=2KiB, 2=4KiB, 3=8KiB > 4th byte, bits 5:4 encode the block size: 0=64KiB, 1=128KiB, ... > 4th byte, bit 6 encodes the OOB size: 0=8B/512B, 1=16B/512B > > Samsung K9GAG08U0D (6-byte sequence): ec d5 94 29 34 41 > 4th byte, bits 1:0 encode the page size: 0=2KiB, 1=4KiB, 3=8KiB, 4=rsvd > 4th byte, bits 7;5:4 encode the block size: 0=128KiB, 1=256KiB, ... > 4th byte, bits 6;3:2 encode the OOB size: 1=128B/page, 2=218B/page > > This patch uses the new 6-byte scheme if the ID code wraps around > exactly at byte 6, and falls back to the old scheme otherwise. > > Signed-off-by: Kevin Cernekee <cernekee@...il.com> Pushed to l2-mtd-2.6 / master -- Best Regards, Artem Bityutskiy (Артём Битюцкий) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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