diff options
| author | Jeremy Kerr <jk@codeconstruct.com.au> | 2021-05-23 17:58:06 +0800 |
|---|---|---|
| committer | Nico Huber <nico.h@gmx.de> | 2021-06-21 10:19:22 +0000 |
| commit | f9f9c9d2c618c494f0d8ba9f4a1da4aea725d003 (patch) | |
| tree | cd1b9164670dd779b86fcab86a56330a81a6f8ca /flashrom.8.tmpl | |
| parent | bc31bd027d159672f000f3437e44d889c928ab97 (diff) | |
| download | flashrom-f9f9c9d2c618c494f0d8ba9f4a1da4aea725d003.tar.gz flashrom-f9f9c9d2c618c494f0d8ba9f4a1da4aea725d003.tar.bz2 flashrom-f9f9c9d2c618c494f0d8ba9f4a1da4aea725d003.zip | |
buspirate: Add psus option
This change adds a 'psus=<on|off>' option, to control the external Vcc
state of the bus pirate, allowing hardware where the SPI flash chip is
powered by the 3V3/5V lines directly.
Change-Id: I8a7d4b40c0f7f04f6976f6757f05b61f2c9958f9
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/54887
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Diffstat (limited to 'flashrom.8.tmpl')
| -rw-r--r-- | flashrom.8.tmpl | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/flashrom.8.tmpl b/flashrom.8.tmpl index 4ae7e71bf..228e17bb5 100644 --- a/flashrom.8.tmpl +++ b/flashrom.8.tmpl @@ -952,7 +952,21 @@ can be More information about the Bus Pirate pull-up resistors and their purpose is available .URLB "http://dangerousprototypes.com/docs/Practical_guide_to_Bus_Pirate_pull-up_resistors" \ "in a guide by dangerousprototypes" . -Only the external supply voltage (Vpu) is supported as of this writing. +.sp +The state of the Bus Pirate power supply pins is controllable through an optional +.B psus +parameter. Syntax is +.sp +.B " flashrom -p buspirate_spi:psus=state" +.sp +where +.B state +can be +.BR on " or " off . +This allows the bus pirate to power the ROM chip directly. This may also be used to provide the +required pullup voltage (when using the +.B pullups +option), by connecting the Bus Pirate's Vpu input to the appropriate Vcc pin. .SS .BR "pickit2_spi " programmer .IP |