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| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-11-11 03:51:26 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2010-11-11 03:51:26 +0300 |
| commit | 43e60861fe9d39740cf5b355f58fecedf0d8e9ba (patch) | |
| tree | 7751208ba2b579d22e70bd5043c6b4c63847feb5 /Documentation/power/opp.txt | |
| parent | d08a5ace18dce9b18d8eb56bb6c0feef082b1b33 (diff) | |
| download | linux-43e60861fe9d39740cf5b355f58fecedf0d8e9ba.tar.xz | |
PM / OPP: Hide OPP configuration when SoCs do not provide an implementation
Since the OPP API is only useful with an appropraite SoC-specific
implementation there is no point in offering the ability to enable
the API on general systems. Provide an ARCH_HAS OPP Kconfig symbol
which masks out the option unless selected by an implementation.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Nishanth Menon <nm@ti.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'Documentation/power/opp.txt')
| -rw-r--r-- | Documentation/power/opp.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/power/opp.txt b/Documentation/power/opp.txt index 44d87ad3cea9..cd445582d1f8 100644 --- a/Documentation/power/opp.txt +++ b/Documentation/power/opp.txt @@ -37,6 +37,9 @@ Typical usage of the OPP library is as follows: SoC framework -> modifies on required cases certain OPPs -> OPP layer -> queries to search/retrieve information -> +Architectures that provide a SoC framework for OPP should select ARCH_HAS_OPP +to make the OPP layer available. + OPP layer expects each domain to be represented by a unique device pointer. SoC framework registers a set of initial OPPs per device with the OPP layer. This list is expected to be an optimally small number typically around 5 per device. |