From: Albert ARIBAUD <albert.aribaud@free.fr>
To: u-boot@lists.denx.de
Subject: [U-Boot] Mixed 8/16 bits NOR FLASH support
Date: Wed, 02 Dec 2009 11:57:56 +0100 [thread overview]
Message-ID: <4B164834.7010108@free.fr> (raw)
In-Reply-To: <200912021015.34183.sr@denx.de>
Stefan Roese a ?crit :
> Hi Albert,
>> In the case of U-boot's CFI detection code, it detects the MX29LV400CB
>> as 16-bit because of its QRY block offset (0x20) and null upper bytes.
>> Then it wants to talk to it using 16-bit wide writes at 16-bit mode
>> offsets, which, in my case, fails.
>
> Since the CFI driver starts detection in 8bit mode and only switches to 16bit
> mode (32bit etc.) if this fails, we seem to have a problem with 8bit mode
> detection of this chip.
All 8-bit mode checks assume the QRY bytes are at addresses 0x10, 0x11,
0x12 etc. So they fail too, since a mixed-mode chip outputs a word-mode
QRY always, at addresses 0xx20, 0x22, 0x24 etc.
Amicalement,
--
Albert.
next prev parent reply other threads:[~2009-12-02 10:57 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-14 23:03 [U-Boot] [PATCH V2 0/3] Support for Marvell Orion5x SoC and LaCie ED Mini V2 board Albert Aribaud
2009-11-14 23:03 ` [U-Boot] [PATCH V2 1/3] Initial support for Marvell Orion5x SoC Albert Aribaud
2009-11-14 23:03 ` [U-Boot] [PATCH V2 2/3] Add Orion5x support to 16550 serial device driver Albert Aribaud
2009-11-14 23:03 ` [U-Boot] [PATCH V2 3/3] Add support for the LaCie ED Mini V2 board Albert Aribaud
2009-11-16 9:05 ` Prafulla Wadaskar
2009-11-29 11:22 ` Albert ARIBAUD
2009-11-18 22:21 ` Wolfgang Denk
2009-11-19 7:51 ` Stefan Roese
2009-11-19 12:48 ` Albert ARIBAUD
2009-11-19 13:10 ` Stefan Roese
2009-11-28 22:21 ` Albert ARIBAUD
2009-11-29 12:56 ` Albert ARIBAUD
2009-12-05 0:35 ` Wolfgang Denk
2009-12-05 7:03 ` Albert ARIBAUD
2009-12-07 21:56 ` Wolfgang Denk
2009-12-11 15:51 ` Albert ARIBAUD
2009-12-02 8:31 ` [U-Boot] Mixed 8/16 bits NOR FLASH support (was: [PATCH V2 3/3] Add support for the LaCie ED Mini V2 board) Albert ARIBAUD
2009-12-02 9:15 ` Stefan Roese
2009-12-02 9:38 ` Wolfgang Denk
2009-12-02 11:07 ` [U-Boot] Mixed 8/16 bits NOR FLASH support Albert ARIBAUD
2009-12-02 10:57 ` Albert ARIBAUD [this message]
2009-11-18 22:17 ` [U-Boot] [PATCH V2 1/3] Initial support for Marvell Orion5x SoC Wolfgang Denk
2009-11-18 22:51 ` Albert ARIBAUD
2009-11-29 8:55 ` Albert ARIBAUD
2009-12-05 0:37 ` Wolfgang Denk
2009-12-23 6:07 ` Prafulla Wadaskar
2009-11-29 10:34 ` Albert ARIBAUD
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