arm: omap3: am35x: Don't mark missing features as present

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The Chip Identification register on the am35x family of SoCs
has bits 12, 7:5, and 3:2 marked as reserved and are read as
zeroes.  Unfortunately, on other omap SoCs, a 0 bit means a
feature is "Full Use" so the OMAP3_CHECK_FEATURE() macro
called by omap3_check_features() will incorrectly interpret
those zeroes to mean that a feature is present even though it
isn't.  To fix that, the feature bits that are incorrectly
set (namely, OMAP3_HAS_IVA and OMAP3_HAS_ISP) need to be
cleared after all of the calls to OMAP3_CHECK_FEATURE() in
omap3_check_features() are made.

Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
[khilman@ti.com: use soc_is_am35xx() instead of cpu_is_am35xx()]
Signed-off-by: Kevin Hilman <khilman@ti.com>

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Mark A. Greer 2012-04-30 16:57:09 -07:00 • committed by Kevin Hilman

parent 99b59df048

commit 1ce0299687

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arch/arm/mach-omap2/id.c

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