[PATCH v2 02/14] ARM: OMAP: counter-32k: Select the CR register offset using the IP scheme.

Jon Hunter jon-hunter at ti.com
Mon Jul 9 19:52:21 EDT 2012


On 07/09/2012 11:47 AM, Kevin Hilman wrote:
> Santosh Shilimkar <santosh.shilimkar at ti.com> writes:
> 
>> From: R Sricharan <r.sricharan at ti.com>
>>
>> OMAP socs has a legacy and a highlander version of the
>> 32k sync counter IP. The register offsets vary between the
>> highlander and the legacy scheme. So use the 'SCHEME'
>> bits(30-31) of the revision register to distinguish between
>> the two versions and choose the CR register offset accordingly.
> 
> Do these scheme bits exist on *all* OMAPs?  including OMAP1?

By the way, I believe that for early devices only the lower 8-bits were
used and the upper bits return 0. For OMAP5912 I read 0x00000010 from
the REV register and so this change should be safe for OMAP1 devices.

Cheers
Jon



More information about the linux-arm-kernel mailing list