The reset circuitry in the RK3399 only resets 'almost all logic' when a software reset is performed. To make our software maintenance easier in the future, we want to have the option (controlled by a DTS property) to force all reset causes other than a power-on reset to trigger a power-on reset via a GPIO trigger.
This adds the necessary support to the rk3399-puma (i.e. RK3399-Q7) board-support and the documentation for the new property (sysreset-gpio) within the /config-node.
Signed-off-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com Tested-by: Klaus Goger klaus.goger@theobroma-systems.com Reviewed-by: Simon Glass sjg@chromium.org
Changes in v2:
- updated for review comments (i.e. simplified dm_gpio_is_valid check)
board/theobroma-systems/puma_rk3399/puma-rk3399.c | 44 +++++++++++++++++++++++ doc/device-tree-bindings/config.txt | 6 ++++ 2 files changed, 50 insertions(+)
Applied to u-boot-rockchip, thanks!