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docs: marvell: Add information into CLOCKSPRESET option how to identify CPU frequency

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Signed-off-by: Pali Rohár <pali@kernel.org>
Change-Id: I5310c30051703bbf9f377762a00eb6a8188c6fa1
This commit is contained in:
Pali Rohár 2021-02-01 12:24:42 +01:00
parent 9c3fffdc86
commit 23abf07ce4
1 changed files with 7 additions and 0 deletions
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7
docs/plat/marvell/armada/build.rst
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@ -168,6 +168,13 @@ There are several build options:
- CPU_1000_DDR_800 - CPU at 1000 MHz, DDR at 800 MHz
- CPU_1200_DDR_750 - CPU at 1200 MHz, DDR at 750 MHz
Look at Armada37x0 chip package marking on board to identify correct CPU frequency.
The last line on package marking (next line after the 88F37x0 line) should contain:
- C080 or I080 - chip with 800 MHz CPU - use ``CLOCKSPRESET=CPU_800_DDR_800``
- C100 or I100 - chip with 1000 MHz CPU - use ``CLOCKSPRESET=CPU_1000_DDR_800``
- C120 - chip with 1200 MHz CPU - use ``CLOCKSPRESET=CPU_1200_DDR_750``
- BOOTDEV
For Armada37x0 only, the flash boot device, default is ``SPINOR``.