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114 lines
2.7 KiB
114 lines
2.7 KiB
Binding for Maxim MAX77686/MAX77802/MAX77620 32k clock generator block |
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This is a part of device tree bindings of MAX77686/MAX77802/MAX77620 |
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multi-function device. More information can be found in MFD DT binding |
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doc as follows: |
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bindings/mfd/max77686.txt for MAX77686 and |
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bindings/mfd/max77802.txt for MAX77802 and |
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bindings/mfd/max77620.txt for MAX77620. |
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The MAX77686 contains three 32.768khz clock outputs that can be controlled |
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(gated/ungated) over I2C. Clocks are defined as preprocessor macros in |
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dt-bindings/clock/maxim,max77686.h. |
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The MAX77802 contains two 32.768khz clock outputs that can be controlled |
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(gated/ungated) over I2C. Clocks are defined as preprocessor macros in |
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dt-bindings/clock/maxim,max77802.h. |
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The MAX77686 contains one 32.768khz clock outputs that can be controlled |
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(gated/ungated) over I2C. Clocks are defined as preprocessor macros in |
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dt-bindings/clock/maxim,max77620.h. |
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Following properties should be presend in main device node of the MFD chip. |
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Required properties: |
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- #clock-cells: from common clock binding; shall be set to 1. |
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Optional properties: |
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- clock-output-names: From common clock binding. |
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Each clock is assigned an identifier and client nodes can use this identifier |
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to specify the clock which they consume. Following indices are allowed: |
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- 0: 32khz_ap clock (max77686, max77802), 32khz_out0 (max77620) |
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- 1: 32khz_cp clock (max77686, max77802), |
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- 2: 32khz_pmic clock (max77686). |
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Clocks are defined as preprocessor macros in above dt-binding header for |
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respective chips. |
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Example: |
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1. With MAX77686: |
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#include <dt-bindings/clock/maxim,max77686.h> |
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/* ... */ |
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Node of the MFD chip |
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max77686: max77686@9 { |
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compatible = "maxim,max77686"; |
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interrupt-parent = <&wakeup_eint>; |
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interrupts = <26 0>; |
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reg = <0x09>; |
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#clock-cells = <1>; |
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/* ... */ |
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}; |
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Clock consumer node |
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foo@0 { |
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compatible = "bar,foo"; |
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/* ... */ |
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clock-names = "my-clock"; |
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clocks = <&max77686 MAX77686_CLK_PMIC>; |
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}; |
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2. With MAX77802: |
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#include <dt-bindings/clock/maxim,max77802.h> |
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/* ... */ |
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Node of the MFD chip |
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max77802: max77802@9 { |
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compatible = "maxim,max77802"; |
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interrupt-parent = <&wakeup_eint>; |
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interrupts = <26 0>; |
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reg = <0x09>; |
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#clock-cells = <1>; |
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/* ... */ |
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}; |
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Clock consumer node |
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foo@0 { |
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compatible = "bar,foo"; |
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/* ... */ |
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clock-names = "my-clock"; |
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clocks = <&max77802 MAX77802_CLK_32K_AP>; |
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}; |
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3. With MAX77620: |
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#include <dt-bindings/clock/maxim,max77620.h> |
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/* ... */ |
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Node of the MFD chip |
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max77620: max77620@3c { |
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compatible = "maxim,max77620"; |
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reg = <0x3c>; |
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#clock-cells = <1>; |
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/* ... */ |
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}; |
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Clock consumer node |
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foo@0 { |
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compatible = "bar,foo"; |
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/* ... */ |
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clock-names = "my-clock"; |
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clocks = <&max77620 MAX77620_CLK_32K_OUT0>; |
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};
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