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-Texas Instruments TI-SCI Generic Power Domain
----------------------------------------------
-
-Some TI SoCs contain a system controller (like the PMMC, etc...) that is
-responsible for controlling the state of the IPs that are present.
-Communication between the host processor running an OS and the system
-controller happens through a protocol known as TI-SCI [1].
-
-[1] Documentation/devicetree/bindings/arm/keystone/ti,sci.txt
-
-PM Domain Node
-==============
-The PM domain node represents the global PM domain managed by the PMMC, which
-in this case is the implementation as documented by the generic PM domain
-bindings in Documentation/devicetree/bindings/power/power-domain.yaml. Because
-this relies on the TI SCI protocol to communicate with the PMMC it must be a
-child of the pmmc node.
-
-Required Properties:
---------------------
-- compatible: should be "ti,sci-pm-domain"
-- #power-domain-cells: Can be one of the following:
- 1: Containing the device id of each node
- 2: First entry should be device id
- Second entry should be one of the floowing:
- TI_SCI_PD_EXCLUSIVE: To allow device to be
- exclusively controlled by
- the requesting hosts.
- TI_SCI_PD_SHARED: To allow device to be shared
- by multiple hosts.
-
-Example (K2G):
--------------
- pmmc: pmmc {
- compatible = "ti,k2g-sci";
- ...
-
- k2g_pds: power-controller {
- compatible = "ti,sci-pm-domain";
- #power-domain-cells = <1>;
- };
- };
-
-PM Domain Consumers
-===================
-Hardware blocks belonging to a PM domain should contain a "power-domains"
-property that is a phandle pointing to the corresponding PM domain node
-along with an index representing the device id to be passed to the PMMC
-for device control.
-
-Required Properties:
---------------------
-- power-domains: phandle pointing to the corresponding PM domain node
- and an ID representing the device.
-
-See http://processors.wiki.ti.com/index.php/TISCI#66AK2G02_Data for the list
-of valid identifiers for k2g.
-
-Example (K2G):
---------------------
- uart0: serial@2530c00 {
- compatible = "ns16550a";
- ...
- power-domains = <&k2g_pds 0x002c>;
- };