[U-Boot] [U-Boot, v2, 1/2] rockchip: rk3399-puma: add code to allow forcing a power-on reset

[Philipp Tomsich]

> 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 at theobroma-systems.com>
> Tested-by: Klaus Goger <klaus.goger at theobroma-systems.com>
> Reviewed-by: Simon Glass <sjg at 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!