@@ -13,8 +13,9 @@ maintainers:
description: |+
System on chip designs are often divided into multiple PM domains that can be
- used for power gating of selected IP blocks for power saving by reduced leakage
- current.
+ used for power gating of selected IP blocks for power saving by reduced
+ leakage current. Moreover, in some cases the similar PM domains may also be
+ capable of scaling performance for a group of IP blocks.
This device tree binding can be used to bind PM domain consumer devices with
their PM domains provided by PM domain providers. A PM domain provider can be
@@ -25,7 +26,7 @@ description: |+
properties:
$nodename:
- pattern: "^(power-controller|power-domain)([@-].*)?$"
+ pattern: "^(power-controller|power-domain|performance-domain)([@-].*)?$"
domain-idle-states:
$ref: /schemas/types.yaml#/definitions/phandle-array
@@ -44,11 +45,11 @@ properties:
operating-points-v2:
description:
- 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-v2-base.yaml
- for more information.
+ Phandles to the OPP tables of power domains that are capable of scaling
+ performance, 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-v2-base.yaml for more information.
"#power-domain-cells":
description:
The power-domains bindings has in many years been used to describe so called performance-domains too. Rather than using a separate binding it has been convenient to re-use the power-domain bindings, as in some cases it's in fact a combination of the both that would be the best description. Therefore, let's make it more clear that the power-domains bindings can be used to describe a performance-domain too. Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Kevin Hilman <khilman@kernel.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org> Cc: Conor Dooley <conor+dt@kernel.org> Cc: devicetree@vger.kernel.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> --- Changes in v3: - New patch. --- .../devicetree/bindings/power/power-domain.yaml | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-)