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Allow to select FTDI device by serial number

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Requires libftdi > 0.5 (2004, commit ID a8f46ddc1595b1b07abfcce613acdafe5b8ddf9d).
Idea stolen from chromiumos commit 5eb5624aeb7e2ee483e2fa0823c4e634c8ea3e68:
http://git.chromium.org/gitweb/?p=chromiumos/third_party/flashrom.git;a=commit;h=5eb5624aeb7e2ee483e2fa0823c4e634c8ea3e68

Corresponding to flashrom svn r1599.

Signed-off-by: Shik Chen <shik@chromium.org>
Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
This commit is contained in:
Shik Chen 2012-09-17 00:40:54 +00:00 committed by Stefan Tauner
parent 5bfef9d321
commit 14fbc4b400
2 changed files with 12 additions and 1 deletions
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9
flashrom.8
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@ -573,6 +573,15 @@ The default model is
and the default interface is
.BR B .
.sp
If there is more than one ft2232_spi-compatible device connected, you can select which one should be used by
specifying its serial number with the
.sp
.B " flashrom \-p ft2232_spi:serial=number"
.sp
syntax where
.B number
is the serial number of the device (which can be found for example in the output of lsusb -v).
.sp
All models supported by the ft2232_spi driver can configure the SPI clock rate by setting a divisor. The
expressible divisors are all even numbers between 2 and 2^17 (=131072) resulting in SPI clock frequencies of
6 MHz down to about 92 Hz for 12 MHz inputs. The default divisor is set to 2, but you can use another one by

4
ft2232_spi.c
View File

@ -283,7 +283,9 @@ int ft2232_spi_init(void)
msg_perr("Unable to select interface: %s\n", ftdic->error_str);
}
f = ftdi_usb_open(ftdic, ft2232_vid, ft2232_type);
arg = extract_programmer_param("serial");
f = ftdi_usb_open_desc(ftdic, ft2232_vid, ft2232_type, NULL, arg);
free(arg);
if (f < 0 && f != -5) {
msg_perr("Unable to open FTDI device: %d (%s)\n", f,