[PATCH 3/3] doc: board: qualcomm: Document RUBIK Pi 3

[Simon Glass]

Hi Hongyang,

On 2026-06-17T10:56:10, Hongyang Zhao <hongyang.zhao at thundersoft.com> wrote:
> doc: board: qualcomm: Document RUBIK Pi 3
>
> Add build and flashing instructions for running U-Boot on the
> Thundercomm RUBIK Pi 3 and include the page in the Qualcomm board
> documentation index.
>
> Signed-off-by: Hongyang Zhao <hongyang.zhao at thundersoft.com>
>
> doc/board/qualcomm/index.rst    |  1 +
>  doc/board/qualcomm/rubikpi3.rst | 51 +++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 52 insertions(+)

> diff --git a/doc/board/qualcomm/rubikpi3.rst b/doc/board/qualcomm/rubikpi3.rst
> @@ -0,0 +1,51 @@
> +Note that fastboot may not be available after replacing the original firmware.
> +To restore the original firmware, or to install a new version of U-Boot, EDL
> +mode can be used with the firehose loader binary appropriate for the board.
> +
> +A tool like bkerler's edl_ can be used for flashing::
> +
> +  $ edl.py --loader /path/to/prog_firehose_ddr.elf w uefi_a u-boot.mbn

Please can you describe how to enter EDL mode on this board? The
rb3gen2 page points the reader at the Qualcomm Linux documentation -
without similar guidance here, a user who bricks the board has no
obvious recovery path.

> diff --git a/doc/board/qualcomm/rubikpi3.rst b/doc/board/qualcomm/rubikpi3.rst
> @@ -0,0 +1,51 @@
> +First, set up `CROSS_COMPILE for aarch64. Then, build U-Boot for
> +qcs6490_rubikpi3`::
> +
> +  $ export CROSS_COMPILE=<aarch64 toolchain prefix>
> +  $ make qcs6490_rubikpi3_defconfig

Since you are renaming the defconfig in v2, remember to update the
build instructions and heading reference here to match.

Regards,
Simon