From b98f6eb3aca7a1fc00e52160bdfe40ff04b23dfd Mon Sep 17 00:00:00 2001 From: Stefan Tauner Date: Mon, 13 Aug 2012 16:33:04 +0000 Subject: serprog: Add support for setting the SPI frequency Introduce a new opcode (0x14) that sends the requested frequency as a 32b long value in Hertz to the programmer and receives the frequency eventually chosen by the programmer. The user can specify this with the programmer parameter "spispeed" (named after the similar parameter for the buspirate) including an optional suffix of 'M' or 'k' for specifying megahertz or kilohertz respectively (lowercase suffixes are also accepted). Thanks to Idwer and Uwe (and maybe others) for their feedback especially regarding the unit of frequency to use. Corresponding to flashrom svn r1571. Signed-off-by: Stefan Tauner Acked-by: Stefan Tauner --- flashrom.8 | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'flashrom.8') diff --git a/flashrom.8 b/flashrom.8 index 93df1a21..f37d5e97 100644 --- a/flashrom.8 +++ b/flashrom.8 @@ -598,7 +598,17 @@ syntax and for IP, you have to use .sp .B " flashrom \-p serprog:ip=ipaddr:port" .sp -instead. More information about serprog is available in +instead. In case the device supports it, you can set the SPI clock frequency +with the optional +.B spispeed +parameter. The frequency is parsed as Hertz, unless an +.BR M ", or " k +suffix is given, then megahertz or kilohertz are used respectively. +Example that sets the frequency to 2 MHz: +.sp +.B "flashrom \-p serprog:dev=/dev/device:baud,spispeed=2M" +.sp +More information about serprog is available in .B serprog-protocol.txt in the source distribution. .SS -- cgit v1.2.3