enable docker ppp

hc

2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87

 kernel/Documentation/devicetree/bindings/pwm/lpc1850-sct-pwm.txt
..
..
@@ -7,7 +7,7 @@
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     See ../clock/clock-bindings.txt for details.
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   - clock-names: Must include the following entries.
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     - pwm: PWM operating clock.
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-  - #pwm-cells: Should be 3. See pwm.txt in this directory for the description
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+  - #pwm-cells: Should be 3. See pwm.yaml in this directory for the description
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     of the cells format.
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 Example: