[U-Boot] [U-Boot, v2, 04/10] rockchip: spl: support a 'same-as-spl'-specifier in the spl-boot-order

[Philipp Tomsich]

> It is often desirable to configure the spl-boot-order (i.e. the order
> that SPL probes devices to find the FIT image containing a full U-Boot)
> such that it contains 'the same device the SPL stage was booted from'
> early on.  To support this, we introduce the 'same-as-spl' specifier
> for the spl-boot-order property.
> 
> This commit adds:
>  - documentation for the new board_spl_was_booted_from() function that
>    individual SoCs/boards should provide, if they can determine where
>    the SPL was booted from
>  - implements the new board_spl_was_booted_from() stub function
>  - adds support for handling the 'same-as-spl' specifier and calling
>    into the per-SoC/per-board support code.
> 
> This also updates the documentation for the 'u-boot,spl-boot-order'
> property.
> 
> Signed-off-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> Reviewed-by: Simon Glass <sjg at chromium.org>
> ---
> 
> Changes in v2: None
> 
>  arch/arm/mach-rockchip/spl-boot-order.c | 29 ++++++++++++++++++++++++++++-
>  doc/device-tree-bindings/chosen.txt     | 12 +++++++++++-
>  2 files changed, 39 insertions(+), 2 deletions(-)
> 

Applied to u-boot-rockchip, thanks!