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classic_cli_manpage.rst: Update doc for custom_rst of raiden_debug_spi

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Update technical details for custom_rst of raiden_debug_spi to help
users better understand their configuration options.

BUG=b:161745002
BRANCH=none
TEST=`meson compile -C testdir` and
     view ./testdir/doc/html/classic_cli_manpage.html

Change-Id: Ie2b084a3ed9bf40f91bfa81dbc95ec69d99d5ad0
Signed-off-by: Hsuan Ting Chen <roccochen@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/81114
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Hsuan Ting Chen 2024-03-07 18:46:10 +08:00 committed by Anastasia Klimchuk
parent 1bcedfa598
commit 041644a6af
1 changed files with 10 additions and 2 deletions
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doc/classic_cli_manpage.rst
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@ -899,11 +899,19 @@ USB device serial number to use specifically with::
The servo device serial number can be found via ``lsusb``.
Raiden will poll the ``ap`` target waiting for the system power to settle on the AP and EC flash devices.
The optional ``custom_rst=true`` parameter changes the timeout value from 3ms to 10ms::
The optional ``custom_rst=true`` parameter alters the behavior of the reset process::
flashrom -p raiden_debug_spi:custom_rst=<true|false>
syntax, where ``custom_rst=false`` is the implicit default timeout of 3ms. More information about the ChromiumOS servo
syntax, where:
``custom_rst=false`` is the implicit default timeout of 3ms
and ``custom_rst=true`` set ``RAIDEN_DEBUG_SPI_REQ_ENABLE_AP_CUSTOM`` instead of ``RAIDEN_DEBUG_SPI_REQ_ENABLE_AP``.
This custom reset will modify the timeout from 3ms to 10ms and will not set ``EC_RST_L``, meaning neither the EC nor the AP will be reset. With this setting, it's the user's responsibility to manage the reset signal manually or by configuring the GPIO.
Failure to handle the reset signal appropriately will likely result in flashing errors.
More information about the ChromiumOS servo
hardware is available at `servos website <https://chromium.googlesource.com/chromiumos/third_party/hdctools/+/HEAD/docs/servo_v4.md>`_.