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| author | Ulf Hansson <ulf.hansson@linaro.org> | 2023-08-25 13:26:30 +0200 |
|---|---|---|
| committer | Sudeep Holla <sudeep.holla@arm.com> | 2023-09-21 16:25:10 +0100 |
| commit | 0ead1f3e158c44aa274f2d5c49be947fbfcdffe0 (patch) | |
| tree | 550aae7916507dbde90fa9ad9fa0cd977e749689 /Documentation/devicetree/bindings/power/power-domain.yaml | |
| parent | e11c480b6df1942b8f9a6958c2d881d8a9a9fb3b (diff) | |
dt-bindings: power: Clarify performance capabilities of power-domains
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>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230825112633.236607-11-ulf.hansson@linaro.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Diffstat (limited to 'Documentation/devicetree/bindings/power/power-domain.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/power/power-domain.yaml | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/Documentation/devicetree/bindings/power/power-domain.yaml b/Documentation/devicetree/bindings/power/power-domain.yaml index d1235e562041..8fdb529d560b 100644 --- a/Documentation/devicetree/bindings/power/power-domain.yaml +++ b/Documentation/devicetree/bindings/power/power-domain.yaml @@ -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: |