On Tue, 1 Jan 2013 05:03:55 -0500 Brian Salcedo <[email protected]> wrote:
> > When working with some flash chips using the Bus Pirate programmer, the > use of the Bus Pirate's on-board pull-up resistors is sometimes > necessary. > > Use of said pull-up resistors requires the user to apply a voltage to > the VPU pin of the Bus Pirate, and then command it to use them. > > Included is a patch to initialize the Bus Pirate's pull-up resistors > with a 'pullups=1' at the command line: > > e.g. flashrom -p buspirate_spi:dev=/dev/buspirate,pullups=1 > > Here is a link to information pertaining to what this patch does. > http://dangerousprototypes.com/docs/SPI_(binary)#0100wxyz_-_Configure_peripherals_w.3Dpower.2C_x.3Dpull-ups.2C_y.3DAUX.2C_z.3DCS > > Currently, flashrom sends 0x4b, which does not set the "pull-ups" bit > high. Optionally sending 0x4f instead will enable them. There were quite some problems with the patch, but they have (hopefully) been fixed by me and tested by Brian. I have committed the result in r1641. Thanks Brian for your contribution! -- Kind regards/Mit freundlichen Grüßen, Stefan Tauner _______________________________________________ flashrom mailing list [email protected] http://www.flashrom.org/mailman/listinfo/flashrom
