davinci: Support various speedgrades for MityDSP-L138 and MityARM-1808 SoMs

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For the MityDSP-L138/MityARM-1808 SoMs, the speed grade can be determined
from the part number string read from the factory configuration block on
the on-board I2C PROM.  Configure the maximum CPU speed based on this
information.

This patch was tested using a MityDSP-L138 and MityARM-1808 at various
speedgrades.  Also, for code coverage, a bogus configuration was tested
as well as a configuration having an unknown part number.

Signed-off-by: Michael Williamson <michael.williamson@criticallink.com>
Tested-by: Michael Williamson <michael.williamson@criticallink.com>
Reviewed-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>

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Michael Williamson 2011-01-04 07:50:23 -05:00 • committed by Kevin Hilman

parent cbb691fb89

commit 6619490a7f

1 changed files with 75 additions and 8 deletions

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arch/arm/mach-davinci/board-mityomapl138.c

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