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dedirpog: add a parameter 'spispeed' to set the SPI clock rate

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The following rates are
available (in Hz):
  375k, 750k, 1.5M, 2.18M, 3M, 8M, 12M and 24M

The original driver reinitializes the programmer after setting the
speed, so the initialization calls have moved into a new function
dediprog_setup() which is called twice.

Corresponding to flashrom svn r1649.

Signed-off-by: Nico Huber <nico.huber@secunet.com>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
This commit is contained in:
Nico Huber
2013-02-20 18:03:36 +00:00
committed by Carl-Daniel Hailfinger
parent e038e9082c
commit 77fa67d2df
2 changed files with 81 additions and 60 deletions
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12
flashrom.8
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@@ -676,6 +676,18 @@ at 0.
Usage example to select the second device:
.sp
.B " flashrom \-p dediprog:device=1"
.sp
An optional
.B spispeed
parameter specifies the frequency of the SPI bus. Syntax is
.sp
.B " flashrom \-p dediprog:spispeed=frequency"
.sp
where
.B frequency
can be
.BR 375k ", " 750k ", " 1.5M ", " 2.18M ", " 3M ", " 8M ", " 12M " or " 24M
(in Hz). The default is a frequency of 12 MHz.
.SS
.BR "rayer_spi " programmer
The default I/O base address used for the parallel port is 0x378 and you can use