[PATCH] mtd: support for bit-reversed CFI cmd/query

David Woodhouse dwmw2 at infradead.org
Tue Apr 22 14:56:31 EDT 2008


On Wed, 2008-02-27 at 23:48 +0300, Nikita V. Youshchenko wrote:
>     mtd: support for bit-reversed CFI cmd/query
>     
>     Some embedded boards have flash chips connected with reversed bit order.
>     Example for 16-bit width:
>      chip D0 is bus D15
>      chip D1 is bus D14
>      ...
>      chip D15 is bus D0
>     It works perfectly for data access, however probing and issuing CFI commands
>     for such chips require bit reversing. This patch adds support for this.
>     
>     Signed-off-by: Nikita Youshchenko <yoush at cs.msu.su>

Am I missing something, or did you only reverse the bits on 16-bit and
64-bit access, and not 8-bit or 32-bit?

-- 
dwmw2




More information about the linux-mtd mailing list