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Binding for Maxim MAX77686/MAX77802/MAX77620 32k clock generator block
This is a part of device tree bindings of MAX77686/MAX77802/MAX77620
multi-function device. More information can be found in MFD DT binding
doc as follows:
bindings/mfd/max77686.txt for MAX77686 and
bindings/mfd/max77802.txt for MAX77802 and
bindings/mfd/max77620.txt for MAX77620.
The MAX77686 contains three 32.768khz clock outputs that can be controlled
(gated/ungated) over I2C. Clocks are defined as preprocessor macros in
dt-bindings/clock/maxim,max77686.h.
The MAX77802 contains two 32.768khz clock outputs that can be controlled
(gated/ungated) over I2C. Clocks are defined as preprocessor macros in
dt-bindings/clock/maxim,max77802.h.
The MAX77686 contains one 32.768khz clock outputs that can be controlled
(gated/ungated) over I2C. Clocks are defined as preprocessor macros in
dt-bindings/clock/maxim,max77620.h.
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 (max77686, max77802), 32khz_out0 (max77620)
- 1: 32khz_cp clock (max77686, max77802),
- 2: 32khz_pmic clock (max77686).
Clocks are defined as preprocessor macros in above dt-binding header for
respective chips.
Example:
1. With MAX77686:
#include <dt-bindings/clock/maxim,max77686.h>
/* ... */
Node of the MFD chip
max77686: max77686@09 {
compatible = "maxim,max77686";
interrupt-parent = <&wakeup_eint>;
interrupts = <26 0>;
reg = <0x09>;
#clock-cells = <1>;
/* ... */
};
Clock consumer node
foo@0 {
compatible = "bar,foo";
/* ... */
clock-names = "my-clock";
clocks = <&max77686 MAX77686_CLK_PMIC>;
};
2. With MAX77802:
#include <dt-bindings/clock/maxim,max77802.h>
/* ... */
Node of the MFD chip
max77802: max77802@09 {
compatible = "maxim,max77802";
interrupt-parent = <&wakeup_eint>;
interrupts = <26 0>;
reg = <0x09>;
#clock-cells = <1>;
/* ... */
};
Clock consumer node
foo@0 {
compatible = "bar,foo";
/* ... */
clock-names = "my-clock";
clocks = <&max77802 MAX77802_CLK_32K_AP>;
};
3. With MAX77620:
#include <dt-bindings/clock/maxim,max77620.h>
/* ... */
Node of the MFD chip
max77620: max77620@3c {
compatible = "maxim,max77620";
reg = <0x3c>;
#clock-cells = <1>;
/* ... */
};
Clock consumer node
foo@0 {
compatible = "bar,foo";
/* ... */
clock-names = "my-clock";
clocks = <&max77620 MAX77620_CLK_32K_OUT0>;
};
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