diff options
-rw-r--r-- | Documentation/power/opp.txt | 3 | ||||
-rw-r--r-- | kernel/power/Kconfig | 4 |
2 files changed, 7 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: | |||
37 | SoC framework -> modifies on required cases certain OPPs -> OPP layer | 37 | SoC framework -> modifies on required cases certain OPPs -> OPP layer |
38 | -> queries to search/retrieve information -> | 38 | -> queries to search/retrieve information -> |
39 | 39 | ||
40 | Architectures that provide a SoC framework for OPP should select ARCH_HAS_OPP | ||
41 | to make the OPP layer available. | ||
42 | |||
40 | OPP layer expects each domain to be represented by a unique device pointer. SoC | 43 | OPP layer expects each domain to be represented by a unique device pointer. SoC |
41 | framework registers a set of initial OPPs per device with the OPP layer. This | 44 | framework registers a set of initial OPPs per device with the OPP layer. This |
42 | list is expected to be an optimally small number typically around 5 per device. | 45 | list is expected to be an optimally small number typically around 5 per device. |
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig index 29bff6117abc..a5aff3ebad38 100644 --- a/kernel/power/Kconfig +++ b/kernel/power/Kconfig | |||
@@ -246,9 +246,13 @@ config PM_OPS | |||
246 | depends on PM_SLEEP || PM_RUNTIME | 246 | depends on PM_SLEEP || PM_RUNTIME |
247 | default y | 247 | default y |
248 | 248 | ||
249 | config ARCH_HAS_OPP | ||
250 | bool | ||
251 | |||
249 | config PM_OPP | 252 | config PM_OPP |
250 | bool "Operating Performance Point (OPP) Layer library" | 253 | bool "Operating Performance Point (OPP) Layer library" |
251 | depends on PM | 254 | depends on PM |
255 | depends on ARCH_HAS_OPP | ||
252 | ---help--- | 256 | ---help--- |
253 | SOCs have a standard set of tuples consisting of frequency and | 257 | SOCs have a standard set of tuples consisting of frequency and |
254 | voltage pairs that the device will support per voltage domain. This | 258 | voltage pairs that the device will support per voltage domain. This |