path: root/Documentation
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authorLinus Torvalds <torvalds@linux-foundation.org>2010-11-16 15:18:17 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-11-16 15:18:17 -0800
commit1e8703b2e6aefba84dd9633d90a4093ff1200b93 (patch)
tree648c6a9ebd0ecfae1d5ef9c44e9996300b7232cd /Documentation
parent45314915ed8089634144c975357bf5ba17f06ab9 (diff)
parent00fafcda1773245a5292f953321ec3f0668c8c28 (diff)
Merge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6
* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: PM / PM QoS: Fix reversed min and max PM / OPP: Hide OPP configuration when SoCs do not provide an implementation PM: Allow devices to be removed during late suspend and early resume
Diffstat (limited to 'Documentation')
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/power/opp.txt b/Documentation/power/opp.txt
index 44d87ad3cea..cd445582d1f 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.