[PATCHv3 4/4] OMAP3: PM: export chip IDCODE, Production ID and Die ID
Kevin Hilman
khilman at deeprootsystems.com
Wed Apr 28 12:21:02 EDT 2010
Eduardo Valentin <eduardo.valentin at nokia.com> writes:
> From: Eduardo Valentin <eduardo.valentin at nokia.com>
>
> This patch exports the OMAP3 IDCODE and Production ID to userspace
> via /proc/cpuinfo using the system_soc_info.
>
> Die ID is also exported depending on what users pass as kernel
> parameter. It is same protection mechanism made for x86 product
> number. So, if user passes "omap3_die_id" parameter, it will append
> die id code into /proc/cpuinfo as well. A Kconfig option has been
> added as well, so it can be configurable during compilation time.
>
> This can be used to track down silicon specific issues. The info is
> exported via /proc/cpuinfo because then it can be possible to include this
> in corematic dumps.
>
> This is based on Peter De Schrijver patch, which export same info via sysfs.
>
> Signed-off-by: Eduardo Valentin <eduardo.valentin at nokia.com>
Re: $SUBJECT, why the PM: prefix?
Kevin
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