47 lines
1.2 KiB
Plaintext
47 lines
1.2 KiB
Plaintext
|
Binding for Maxim MAX77686 32k clock generator block
|
||
|
|
|
||
|
|
This is a part of device tree bindings of MAX77686 multi-function device.
|
||
|
|
More information can be found in bindings/mfd/max77686.txt file.
|
||
|
|
|
||
|
|
The MAX77686 contains three 32.768khz clock outputs that can be controlled
|
||
|
|
(gated/ungated) over I2C.
|
||
|
|
|
||
|
|
Following properties should be presend in main device node of the MFD chip.
|
||
|
|
|
||
|
|
Required properties:
|
||
|
|
|
||
|
|
- #clock-cells: from common clock binding; shall be set to 1.
|
||
|
|
|
||
|
|
Optional properties:
|
||
|
|
- clock-output-names: From common clock binding.
|
||
|
|
|
||
|
|
Each clock is assigned an identifier and client nodes can use this identifier
|
||
|
|
to specify the clock which they consume. Following indices are allowed:
|
||
|
|
- 0: 32khz_ap clock,
|
||
|
|
- 1: 32khz_cp clock,
|
||
|
|
- 2: 32khz_pmic clock.
|
||
|
|
|
||
|
|
Clocks are defined as preprocessor macros in dt-bindings/clock/maxim,max77686.h
|
||
|
|
header and can be used in device tree sources.
|
||
|
|
|
||
|
|
Example: Node of the MFD chip
|
||
|
|
|
||
|
|
max77686: max77686@09 {
|
||
|
|
compatible = "maxim,max77686";
|
||
|
|
interrupt-parent = <&wakeup_eint>;
|
||
|
|
interrupts = <26 0>;
|
||
|
|
reg = <0x09>;
|
||
|
|
#clock-cells = <1>;
|
||
|
|
|
||
|
|
/* ... */
|
||
|
|
};
|
||
|
|
|
||
|
|
Example: Clock consumer node
|
||
|
|
|
||
|
|
foo@0 {
|
||
|
|
compatible = "bar,foo";
|
||
|
|
/* ... */
|
||
|
|
clock-names = "my-clock";
|
||
|
|
clocks = <&max77686 MAX77686_CLK_PMIC>;
|
||
|
|
};
|