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From: Stefan Roese <sr@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCHv2 CFI flash]: Workaround for Numonyx Axcell	P33/P30 256-Mbit 65nm bug
Date: Tue, 10 Aug 2010 17:28:59 +0200	[thread overview]
Message-ID: <201008101728.59679.sr@denx.de> (raw)
In-Reply-To: <20100809154603.GA3594@frolo.macqel>

Hi Philippe,

one more thing:

On Monday 09 August 2010 17:46:03 Philippe De Muyter wrote:
> Here is the excerpt from the errata :
> 
> Workaround:  If the interval between 60h and its subsequent command
> 	     can be guaranteed within 20?s, Option I is recommended,
> 	     otherwise Option II (involves hardware) should be selected.
> Option I: The table below lists the detail command sequences:
> Command
> 	      Data bus           Address bus       Remarks
> Sequence
>   1              90h            Block Address
> 						   Read Lock Status
>   2             Read         Block Address + 02h
>  (2)(3)                                      (1)
> 3                60h           Block Address
>  (2)(3)                                      (1)   Lock/Unlock/RCR
> Configuration 4           D0h/01h/03h        Block Address
> Notes:
> (1) Block Address refers to RCR configuration data only when the 60h
>     command sequence is used to set RCR register combined with 03h
>     subsequent command.
> (2) For the third and fourth command sequences, the Block Address must
>     be the same.
> (3) The interval between 60h command and its subsequent D0h/01h/2Fh/03h
>     commands should be less than 20?s.

Please add this workaround text from the errata to the commit text in your 
next patch version. This makes things easier - no need to search for the 
errata.

Thanks.
 
Cheers,
Stefan

--
DENX Software Engineering GmbH,      MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich,  Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: office at denx.de

  parent reply	other threads:[~2010-08-10 15:28 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-06-23 11:57 [U-Boot] [PATCH CFI flash]: Workaround for Numonyx Axcell P33/P30 256-Mbit 65nm bug Philippe De Muyter
2010-06-23 12:48 ` Wolfgang Denk
2010-06-23 13:10 ` [U-Boot] [PATCHv2 " Philippe De Muyter
2010-08-06 23:11   ` Wolfgang Denk
2010-08-09  8:32     ` Joakim Tjernlund
2010-08-09 12:57       ` Philippe De Muyter
2010-08-09 15:48         ` Philippe De Muyter
2010-08-09 15:55         ` Joakim Tjernlund
2010-08-09 13:52     ` Stefan Roese
2010-08-09 15:46       ` Philippe De Muyter
2010-08-10 11:20         ` Stefan Roese
2010-08-10 13:31           ` Philippe De Muyter
2010-08-10 13:39             ` Stefan Roese
2010-08-10 15:28         ` Stefan Roese [this message]
2010-08-10 16:12           ` [U-Boot] [PATCHv2 CFI flash]: Workaround for Numonyx Axcell?P33/P30 " Philippe De Muyter

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