42 lines
1.1 KiB
Plaintext
42 lines
1.1 KiB
Plaintext
System Power Management Interface (SPMI) Controller
|
|
|
|
This document defines a generic set of bindings for use by SPMI controllers. A
|
|
controller is modelled in device tree as a node with zero or more child nodes,
|
|
each representing a unique slave on the bus.
|
|
|
|
Required properties:
|
|
- #address-cells : must be set to 2
|
|
- #size-cells : must be set to 0
|
|
|
|
Child nodes:
|
|
|
|
An SPMI controller node can contain zero or more child nodes representing slave
|
|
devices on the bus. Child 'reg' properties are specified as an address, type
|
|
pair. The address must be in the range 0-15 (4 bits). The type must be one of
|
|
SPMI_USID (0) or SPMI_GSID (1) for Unique Slave ID or Group Slave ID respectively.
|
|
These are the identifiers "statically assigned by the system integrator", as
|
|
per the SPMI spec.
|
|
|
|
Each child node must have one and only one 'reg' entry of type SPMI_USID.
|
|
|
|
#include <dt-bindings/spmi/spmi.h>
|
|
|
|
spmi@.. {
|
|
compatible = "...";
|
|
reg = <...>;
|
|
|
|
#address-cells = <2>;
|
|
#size-cells = <0>;
|
|
|
|
child@0 {
|
|
compatible = "...";
|
|
reg = <0 SPMI_USID>;
|
|
};
|
|
|
|
child@7 {
|
|
compatible = "...";
|
|
reg = <7 SPMI_USID
|
|
3 SPMI_GSID>;
|
|
};
|
|
};
|