linux-kernel - RE: [PATCH V4 4/9] mtd: get the ECC info from the Extended Parameter Page

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Date:	Thu, 2 May 2013 07:43:29 +0000
From:	"Gupta, Pekon" <pekon@...com>
To:	Huang Shijie <b32955@...escale.com>,
	"dwmw2@...radead.org" <dwmw2@...radead.org>
CC:	"computersforpeace@...il.com" <computersforpeace@...il.com>,
	"linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"dedekind1@...il.com" <dedekind1@...il.com>
Subject: RE: [PATCH V4 4/9] mtd: get the ECC info from the Extended
 Parameter Page

> Since the ONFI 2.1, the onfi spec adds the Extended Parameter Page
> to store the ECC info.
> 
> The onfi spec tells us that if the nand chip's recommended ECC codeword
> size is not 512 bytes, then the @ecc_bits is 0xff. The host _SHOULD_
> then
> read the Extended ECC information that is part of the extended
> parameter
> page to retrieve the ECC requirements for this device.
> 
> This patch implement the reading of the Extended Parameter Page, and
> parses
> the sections for ECC type, and get the ECC info from the ECC section.
> 
> Tested this patch with Micron MT29F64G08CBABAWP.
> 
> Signed-off-by: Huang Shijie <b32955@...escale.com>

Acked-by: Pekon Gupta <pekon@...com>

Thanks..
with regards, pekon
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