[PATCH V8 1/3] OPP: Allow OPP table to be used for power-domains
From: Viresh Kumar <viresh.kumar@linaro.org>
Date: 2017-12-18 10:21:43
Also in:
linux-pm, lkml
Subsystem:
generic pm domains, open firmware and flattened device tree bindings, operating performance points (opp), the rest · Maintainers:
Ulf Hansson, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Viresh Kumar, Nishanth Menon, Stephen Boyd, Linus Torvalds
Power-domains can also have their active states and this patch enhances the OPP binding to define those. The power domains can use the OPP bindings as is, with one additional change to Allow "operating-points-v2" property to contain multiple phandles for power domain providers providing multiple domains. Reviewed-by: Ulf Hansson <redacted> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> --- Documentation/devicetree/bindings/opp/opp.txt | 5 +++++ Documentation/devicetree/bindings/power/power_domain.txt | 6 ++++++ 2 files changed, 11 insertions(+)
diff --git a/Documentation/devicetree/bindings/opp/opp.txt b/Documentation/devicetree/bindings/opp/opp.txt
index 9d733af26be7..a3953a1bb1a1 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>".
diff --git a/Documentation/devicetree/bindings/power/power_domain.txt b/Documentation/devicetree/bindings/power/power_domain.txt
index 14bd9e945ff6..61549840ab3b 100644
--- a/Documentation/devicetree/bindings/power/power_domain.txt
+++ b/Documentation/devicetree/bindings/power/power_domain.txt@@ -40,6 +40,12 @@ phandle arguments (so called PM domain specifiers) of length specified by the domain's idle states. In the absence of this property, the domain would be considered as capable of being powered-on or powered-off. +- operating-points-v2 : Phandles to the OPP tables of power domains provided by + a power domain provider. If the provider provides a single power domain only + or all the power domains provided by the provider have identical OPP tables, + then this shall contain a single phandle. Refer to ../opp/opp.txt for more + information. + Example: power: power-controller@12340000 {
--
2.15.0.194.g9af6a3dea062