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Diffstat (limited to 'Documentation/devicetree/bindings/power/power_domain.txt')
-rw-r--r-- | Documentation/devicetree/bindings/power/power_domain.txt | 95 |
1 files changed, 1 insertions, 94 deletions
diff --git a/Documentation/devicetree/bindings/power/power_domain.txt b/Documentation/devicetree/bindings/power/power_domain.txt index 8f8b25a24b8f..5b09b2deb483 100644 --- a/Documentation/devicetree/bindings/power/power_domain.txt +++ b/Documentation/devicetree/bindings/power/power_domain.txt @@ -13,100 +13,7 @@ phandle arguments (so called PM domain specifiers) of length specified by the ==PM domain providers== -Required properties: - - #power-domain-cells : Number of cells in a PM domain specifier; - Typically 0 for nodes representing a single PM domain and 1 for nodes - providing multiple PM domains (e.g. power controllers), but can be any value - as specified by device tree binding documentation of particular provider. - -Optional properties: - - power-domains : A phandle and PM domain specifier as defined by bindings of - the power controller specified by phandle. - Some power domains might be powered from another power domain (or have - other hardware specific dependencies). For representing such dependency - a standard PM domain consumer binding is used. When provided, all domains - created by the given provider should be subdomains of the domain - specified by this binding. More details about power domain specifier are - available in the next section. - -- domain-idle-states : A phandle of an idle-state that shall be soaked into a - generic domain power state. The idle state definitions are - compatible with domain-idle-state specified in [1]. phandles - that are not compatible with domain-idle-state will be - ignored. - The domain-idle-state property reflects the idle state of this PM domain and - not the idle states of the devices or sub-domains in the PM domain. Devices - and sub-domains have their own idle-states independent of the parent - 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 { - compatible = "foo,power-controller"; - reg = <0x12340000 0x1000>; - #power-domain-cells = <1>; - }; - -The node above defines a power controller that is a PM domain provider and -expects one cell as its phandle argument. - -Example 2: - - parent: power-controller@12340000 { - compatible = "foo,power-controller"; - reg = <0x12340000 0x1000>; - #power-domain-cells = <1>; - }; - - child: power-controller@12341000 { - compatible = "foo,power-controller"; - reg = <0x12341000 0x1000>; - power-domains = <&parent 0>; - #power-domain-cells = <1>; - }; - -The nodes above define two power controllers: 'parent' and 'child'. -Domains created by the 'child' power controller are subdomains of '0' power -domain provided by the 'parent' power controller. - -Example 3: - parent: power-controller@12340000 { - compatible = "foo,power-controller"; - reg = <0x12340000 0x1000>; - #power-domain-cells = <0>; - domain-idle-states = <&DOMAIN_RET>, <&DOMAIN_PWR_DN>; - }; - - child: power-controller@12341000 { - compatible = "foo,power-controller"; - reg = <0x12341000 0x1000>; - power-domains = <&parent>; - #power-domain-cells = <0>; - domain-idle-states = <&DOMAIN_PWR_DN>; - }; - - DOMAIN_RET: state@0 { - compatible = "domain-idle-state"; - reg = <0x0>; - entry-latency-us = <1000>; - exit-latency-us = <2000>; - min-residency-us = <10000>; - }; - - DOMAIN_PWR_DN: state@1 { - compatible = "domain-idle-state"; - reg = <0x1>; - entry-latency-us = <5000>; - exit-latency-us = <8000>; - min-residency-us = <7000>; - }; +See power-domain.yaml. ==PM domain consumers== |