2016-06-17 18:51:06 +08:00
|
|
|
Binding for Maxim MAX77686/MAX77802/MAX77620 32k clock generator block
|
2013-12-13 00:07:20 +08:00
|
|
|
|
2016-06-17 18:51:06 +08:00
|
|
|
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.
|
2013-12-13 00:07:20 +08:00
|
|
|
|
|
|
|
The MAX77686 contains three 32.768khz clock outputs that can be controlled
|
2016-06-17 18:51:06 +08:00
|
|
|
(gated/ungated) over I2C. Clocks are defined as preprocessor macros in
|
|
|
|
dt-bindings/clock/maxim,max77686.h.
|
|
|
|
|
2013-12-13 00:07:20 +08:00
|
|
|
|
2016-06-17 18:51:05 +08:00
|
|
|
The MAX77802 contains two 32.768khz clock outputs that can be controlled
|
2016-06-17 18:51:06 +08:00
|
|
|
(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.
|
2016-06-17 18:51:05 +08:00
|
|
|
|
2013-12-13 00:07:20 +08:00
|
|
|
Following properties should be presend in main device node of the MFD chip.
|
|
|
|
|
|
|
|
Required properties:
|
2014-08-18 16:33:02 +08:00
|
|
|
|
|
|
|
- #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:
|
2016-06-17 18:51:06 +08:00
|
|
|
- 0: 32khz_ap clock (max77686, max77802), 32khz_out0 (max77620)
|
2016-06-17 18:51:05 +08:00
|
|
|
- 1: 32khz_cp clock (max77686, max77802),
|
|
|
|
- 2: 32khz_pmic clock (max77686).
|
2013-12-13 00:07:20 +08:00
|
|
|
|
2016-06-17 18:51:06 +08:00
|
|
|
Clocks are defined as preprocessor macros in above dt-binding header for
|
|
|
|
respective chips.
|
2016-06-17 18:51:05 +08:00
|
|
|
|
|
|
|
Example:
|
|
|
|
|
|
|
|
1. With MAX77686:
|
|
|
|
|
|
|
|
#include <dt-bindings/clock/maxim,max77686.h>
|
|
|
|
/* ... */
|
|
|
|
|
|
|
|
Node of the MFD chip
|
2017-11-09 00:27:48 +08:00
|
|
|
max77686: max77686@9 {
|
2016-06-17 18:51:05 +08:00
|
|
|
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:
|
2014-08-18 16:33:02 +08:00
|
|
|
|
2016-06-17 18:51:05 +08:00
|
|
|
#include <dt-bindings/clock/maxim,max77802.h>
|
|
|
|
/* ... */
|
2013-12-13 00:07:20 +08:00
|
|
|
|
2016-06-17 18:51:05 +08:00
|
|
|
Node of the MFD chip
|
2017-11-09 00:27:48 +08:00
|
|
|
max77802: max77802@9 {
|
2016-06-17 18:51:05 +08:00
|
|
|
compatible = "maxim,max77802";
|
|
|
|
interrupt-parent = <&wakeup_eint>;
|
|
|
|
interrupts = <26 0>;
|
|
|
|
reg = <0x09>;
|
|
|
|
#clock-cells = <1>;
|
2013-12-13 00:07:20 +08:00
|
|
|
|
2016-06-17 18:51:05 +08:00
|
|
|
/* ... */
|
|
|
|
};
|
2013-12-13 00:07:20 +08:00
|
|
|
|
2016-06-17 18:51:05 +08:00
|
|
|
Clock consumer node
|
2013-12-13 00:07:20 +08:00
|
|
|
|
2016-06-17 18:51:05 +08:00
|
|
|
foo@0 {
|
|
|
|
compatible = "bar,foo";
|
|
|
|
/* ... */
|
|
|
|
clock-names = "my-clock";
|
|
|
|
clocks = <&max77802 MAX77802_CLK_32K_AP>;
|
|
|
|
};
|
2016-06-17 18:51:06 +08:00
|
|
|
|
|
|
|
|
|
|
|
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>;
|
|
|
|
};
|