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46 lines
1005 B
Plaintext
46 lines
1005 B
Plaintext
/dts-v1/;
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/plugin/;
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/*
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Legal pin,function combinations for each channel:
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PWM0: 12,4(Alt0) 18,2(Alt5) 40,4(Alt0) 52,5(Alt1)
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PWM1: 13,4(Alt0) 19,2(Alt5) 41,4(Alt0) 45,4(Alt0) 53,5(Alt1)
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N.B.:
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1) Pin 18 is the only one available on all platforms, and
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it is the one used by the I2S audio interface.
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Pins 12 and 13 might be better choices on an A+, B+ or Pi2.
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2) The onboard analogue audio output uses both PWM channels.
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3) So be careful mixing audio and PWM.
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*/
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/ {
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compatible = "brcm,bcm2835";
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fragment@0 {
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target = <&gpio>;
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__overlay__ {
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pwm_pins: pwm_pins {
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brcm,pins = <18>;
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brcm,function = <2>; /* Alt5 */
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};
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};
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};
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fragment@1 {
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target = <&pwm>;
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frag1: __overlay__ {
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pinctrl-names = "default";
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pinctrl-0 = <&pwm_pins>;
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assigned-clock-rates = <100000000>;
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status = "okay";
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};
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};
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__overrides__ {
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pin = <&pwm_pins>,"brcm,pins:0";
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func = <&pwm_pins>,"brcm,function:0";
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clock = <&frag1>,"assigned-clock-rates:0";
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};
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};
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