modify sin led gpio

hc

2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e

 kernel/Documentation/devicetree/bindings/pwm/pwm-omap-dmtimer.txt
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..
@@ -4,7 +4,7 @@
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 - compatible: Shall contain "ti,omap-dmtimer-pwm".
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 - ti,timers: phandle to PWM capable OMAP timer. See timer/ti,timer.txt for info
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   about these timers.
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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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 Optional properties: