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doc: ls1046ardb: Expand boot mode section

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This adds some additional info about booting from different sources,
including the correct switch positions.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
This commit is contained in:
Sean Anderson 2022-03-22 16:59:11 -04:00 committed by Tom Rini
parent 71230cdaa9
commit b5ec417b56
1 changed files with 14 additions and 3 deletions
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17
doc/board/nxp/ls1046ardb.rst
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@ -95,6 +95,17 @@ Start Address End Address Description Size
Booting Options
---------------
- QSPI boot
- SD boot
- eMMC boot
NB: The reference manual documents the RCW source with the *least-significant
bit first*.
QSPI boot
^^^^^^^^^
This is the default. ``{ SW5[0:8], SW4[0] }`` should be ``0010_0010_0``.
SD boot and eMMC boot
^^^^^^^^^^^^^^^^^^^^^
``{ SW5[0:8], SW4[0] }`` should be ``0010_0000_0``. eMMC is selected only if
there is no SD card in the slot.