linux-kernel - Re: [PATCH 09/14] Blackfin SPI driver: Fix SPI driver to work with SPI flash ST25P16 on bf548

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Message-ID: <8bd0f97a0710310133m7b5cbbf3j545a489c401185df@mail.gmail.com>
Date:	Wed, 31 Oct 2007 04:33:27 -0400
From:	"Mike Frysinger" <vapier.adi@...il.com>
To:	"David Brownell" <david-b@...bell.net>
Cc:	bryan.wu@...log.com, spi-devel-general@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org,
	"Sonic Zhang" <sonic.zhang@...log.com>
Subject: Re: [PATCH 09/14] Blackfin SPI driver: Fix SPI driver to work with SPI flash ST25P16 on bf548

On 10/31/07, David Brownell <david-b@...bell.net> wrote:
> (ISTR the M25P16 in $SUBJECT has two read commands, one of
> which is only usable at clock rates below 33 MHz or so, but
> most other commands can work above that speed just fine.)

pretty much all SPI flashes have two read commands ("slow" and "fast"
as they're typically called).  i dont think any of the linux drivers
though use the "slow" reads with any SPI flashes ... that'd be silly
:)
-mike
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