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Maxim has used the same clock IP on multiple PMICs like MAX77686, MAX77802, MAX77620. Only differences are the number of clocks from these PMICs like MAX77686 has 3 clocks output, MAX776802 have two clock output and MAX77620 has one clock output. Add clock binding details and DT example for the MAX77620. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> CC: Krzysztof Kozlowski <k.kozlowski@samsung.com> CC: Javier Martinez Canillas <javier@dowhile0.org> Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
115 lines
2.7 KiB
Plaintext
115 lines
2.7 KiB
Plaintext
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@09 {
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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@09 {
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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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