| Message ID | 20180529100421.31022-6-ulf.hansson@linaro.org |
|---|---|
| State | Deferred |
| Headers | show |
| Series | PM / Domains: Add support for multi PM domains per device | expand |
On Tue, May 29, 2018 at 12:04:17PM +0200, Ulf Hansson wrote: > To be able to describe topologies where devices are partitioned across > multiple power domains, let's extend the power-domain property to allow > being a list of PM domain specifiers. > > Cc: Rob Herring <robh+dt@kernel.org> > Cc: devicetree@vger.kernel.org > Suggested-by: Jon Hunter <jonathanh@nvidia.com> > Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> > --- > > Changes in v2: > - Fixed comments from Geert. Re-worded to "PM domain specifiers" and > clarified DT example. > > --- > .../bindings/power/power_domain.txt | 19 ++++++++++++++----- > 1 file changed, 14 insertions(+), 5 deletions(-) Reviewed-by: Rob Herring <robh@kernel.org> -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 29-05-18, 12:04, Ulf Hansson wrote: > To be able to describe topologies where devices are partitioned across > multiple power domains, let's extend the power-domain property to allow > being a list of PM domain specifiers. > > Cc: Rob Herring <robh+dt@kernel.org> > Cc: devicetree@vger.kernel.org > Suggested-by: Jon Hunter <jonathanh@nvidia.com> > Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
diff --git a/Documentation/devicetree/bindings/power/power_domain.txt b/Documentation/devicetree/bindings/power/power_domain.txt index 4733f76cbe48..9b387f861aed 100644 --- a/Documentation/devicetree/bindings/power/power_domain.txt +++ b/Documentation/devicetree/bindings/power/power_domain.txt @@ -111,8 +111,8 @@ Example 3: ==PM domain consumers== Required properties: - - power-domains : A phandle and PM domain specifier as defined by bindings of - the power controller specified by phandle. + - power-domains : A list of PM domain specifiers, as defined by bindings of + the power controller that is the PM domain provider. Example: @@ -122,9 +122,18 @@ Example: power-domains = <&power 0>; }; -The node above defines a typical PM domain consumer device, which is located -inside a PM domain with index 0 of a power controller represented by a node -with the label "power". + leaky-device@12351000 { + compatible = "foo,i-leak-current"; + reg = <0x12351000 0x1000>; + power-domains = <&power 0>, <&power 1> ; + }; + +The first example above defines a typical PM domain consumer device, which is +located inside a PM domain with index 0 of a power controller represented by a +node with the label "power". +In the second example the consumer device are partitioned across two PM domains, +the first with index 0 and the second with index 1, of a power controller that +is represented by a node with the label "power. Optional properties: - required-opps: This contains phandle to an OPP node in another device's OPP
To be able to describe topologies where devices are partitioned across multiple power domains, let's extend the power-domain property to allow being a list of PM domain specifiers. Cc: Rob Herring <robh+dt@kernel.org> Cc: devicetree@vger.kernel.org Suggested-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> --- Changes in v2: - Fixed comments from Geert. Re-worded to "PM domain specifiers" and clarified DT example. --- .../bindings/power/power_domain.txt | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-)