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Documentation: imx95-a55-evk: add UMS flashing steps for u-boot

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Add detailed steps for copying nuttx.bin to eMMC via u-boot USB Mass
Storage (ums) mode, which exposes the eMMC as a USB drive on the host
PC for easy file transfer.

Signed-off-by: buxiasen <buxiasen@xiaomi.com>
This commit is contained in:
buxiasen 2026-03-20 11:37:57 +08:00 • committed by Xiang Xiao
parent b3b7e012e9
commit ced3cb1aa8
1 changed files with 18 additions and 2 deletions
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20
Documentation/platforms/arm64/imx9/boards/imx95-a55-evk/index.rst
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@ -81,9 +81,25 @@ You have four options:
Option 1: load via u-boot from SD-card:
---------------------------------------
1. Build nuttx, and move ``nuttx.bin`` to MMC
1. Build nuttx
2. Load from MMC and start nuttx payload
2. In the u-boot console, expose the eMMC as a USB mass storage device:
.. code:: console
u-boot=> ums 0 mmc 0
The board will appear as a USB drive on the host PC.
3. On the Linux host, copy ``nuttx.bin`` to the boot partition:
.. code:: console
$ cp nuttx.bin /media/`id -un`/boot
4. Go back to the u-boot console and press ``Ctrl+C`` to stop UMS mode.
5. Load from MMC and start nuttx payload:
.. code:: console