add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/Documentation/devicetree/bindings/pwm/pwm-zx.txt
..
..
@@ -7,7 +7,7 @@
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  - clock-names: "pclk" for PCLK, "wclk" for WCLK to the PWM controller.  The
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    PCLK is for register access, while WCLK is the reference clock for
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    calculating period and duty cycles.
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- - #pwm-cells: Should be 3. See pwm.txt in this directory for a description of
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+ - #pwm-cells: Should be 3. See pwm.yaml in this directory for a description of
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    the cells format.
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 Example: