tree 9058e40bb65185f1367697ce8cf33479a23362dc
parent ca6d5ad4379d1fe9a3d8a8bc7b0548c8072d8356
author Nandor Han <nandor.han@vaisala.com> 1623333404 +0300
committer Tom Rini <trini@konsulko.com> 1627049799 -0400

reboot-mode: read the boot mode from GPIOs status

A use case for controlling the boot mode is when the user wants
to control the device boot by pushing a button without needing to
go in user-space.

Add a new backed for reboot mode where GPIOs are used to control the
reboot-mode. The driver is able to scan a predefined list of GPIOs
and return the magic value. Having the modes associated with
the magic value generated based on the GPIO values, allows the
reboot mode uclass to select the proper mode.

Signed-off-by: Nandor Han <nandor.han@vaisala.com>
Reviewed-by: Simon Glass <sjg@chromium.org>