diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-01-05 12:57:19 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-01-05 12:57:19 +0100 |
| commit | b68bf11ebb536ee77c78baa56793b297212a38cd (patch) | |
| tree | c2b9aa19ccf2344f56a124f6a032f4108f3436c6 /Documentation/devicetree/bindings/opp | |
| parent | 30a7acd573899fd8b8ac39236eff6468b195ac7d (diff) | |
| parent | e856f078bcf120e1627c750014d2612974ed81a2 (diff) | |
Merge branch 'opp/linux-next' of https://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm
Pull Operating Performance Points (OPP) framework updates for v4.16
from Viresh Kumar.
* 'opp/linux-next' of https://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
OPP: Introduce "required-opp" property
OPP: Allow OPP table to be used for power-domains
Diffstat (limited to 'Documentation/devicetree/bindings/opp')
| -rw-r--r-- | Documentation/devicetree/bindings/opp/opp.txt | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/opp/opp.txt b/Documentation/devicetree/bindings/opp/opp.txt index 9d733af26be7..4e4f30288c8b 100644 --- a/Documentation/devicetree/bindings/opp/opp.txt +++ b/Documentation/devicetree/bindings/opp/opp.txt @@ -45,6 +45,11 @@ Devices supporting OPPs must set their "operating-points-v2" property with phandle to a OPP table in their DT node. The OPP core will use this phandle to find the operating points for the device. +This can contain more than one phandle for power domain providers that provide +multiple power domains. That is, one phandle for each power domain. If only one +phandle is available, then the same OPP table will be used for all power domains +provided by the power domain provider. + If required, this can be extended for SoC vendor specific bindings. Such bindings should be documented as Documentation/devicetree/bindings/power/<vendor>-opp.txt and should have a compatible description like: "operating-points-v2-<vendor>". @@ -154,6 +159,14 @@ Optional properties: - status: Marks the node enabled/disabled. +- required-opp: This contains phandle to an OPP node in another device's OPP + table. It may contain an array of phandles, where each phandle points to an + OPP of a different device. It should not contain multiple phandles to the OPP + nodes in the same OPP table. This specifies the minimum required OPP of the + device(s), whose OPP's phandle is present in this property, for the + functioning of the current device at the current OPP (where this property is + present). + Example 1: Single cluster Dual-core ARM cortex A9, switch DVFS states together. / { |