modify sin led gpio

hc

2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e

 kernel/Documentation/devicetree/bindings/pwm/nxp,pca9685-pwm.txt
..
..
@@ -3,7 +3,7 @@
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 Required properties:
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   - compatible: "nxp,pca9685-pwm"
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-  - #pwm-cells: Should be 2. See pwm.txt in this directory for a description of
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+  - #pwm-cells: Should be 2. See pwm.yaml in this directory for a description of
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     the cells format.
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     The index 16 is the ALLCALL channel, that sets all PWM channels at the same
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     time.