modify sin led gpio

hc

2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e

 kernel/Documentation/devicetree/bindings/pwm/atmel-hlcdc-pwm.txt
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@@ -10,7 +10,7 @@
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  - pinctrl-0: should contain the pinctrl states described by pinctrl
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    default.
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  - #pwm-cells: should be set to 3. This PWM chip use the default 3 cells
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-   bindings defined in pwm.txt in this directory.
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+   bindings defined in pwm.yaml in this directory.
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 Example:
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