| 0a7ba7e9 |
1 | /dts-v1/; |
| 2 | /plugin/; |
| 3 | |
| 4 | /* |
| 5 | This is the 2-channel overlay - only use it if you need both channels. |
| 6 | |
| 7 | Legal pin,function combinations for each channel: |
| 8 | PWM0: 12,4(Alt0) 18,2(Alt5) 40,4(Alt0) 52,5(Alt1) |
| 9 | PWM1: 13,4(Alt0) 19,2(Alt5) 41,4(Alt0) 45,4(Alt0) 53,5(Alt1) |
| 10 | |
| 11 | N.B.: |
| 12 | 1) Pin 18 is the only one available on all platforms, and |
| 13 | it is the one used by the I2S audio interface. |
| 14 | Pins 12 and 13 might be better choices on an A+, B+ or Pi2. |
| 15 | 2) The onboard analogue audio output uses both PWM channels. |
| 16 | 3) So be careful mixing audio and PWM. |
| 17 | */ |
| 18 | |
| 19 | / { |
| 20 | fragment@0 { |
| 21 | target = <&gpio>; |
| 22 | __overlay__ { |
| 23 | pwm_pins: pwm_pins { |
| 24 | brcm,pins = <18 19>; |
| 25 | brcm,function = <2 2>; /* Alt5 */ |
| 26 | }; |
| 27 | }; |
| 28 | }; |
| 29 | |
| 30 | fragment@1 { |
| 31 | target = <&pwm>; |
| 32 | frag1: __overlay__ { |
| 33 | pinctrl-names = "default"; |
| 34 | pinctrl-0 = <&pwm_pins>; |
| 35 | assigned-clock-rates = <100000000>; |
| 36 | status = "okay"; |
| 37 | }; |
| 38 | }; |
| 39 | |
| 40 | __overrides__ { |
| 41 | pin = <&pwm_pins>,"brcm,pins:0"; |
| 42 | pin2 = <&pwm_pins>,"brcm,pins:4"; |
| 43 | func = <&pwm_pins>,"brcm,function:0"; |
| 44 | func2 = <&pwm_pins>,"brcm,function:4"; |
| 45 | clock = <&frag1>,"assigned-clock-rates:0"; |
| 46 | }; |
| 47 | }; |
projects / mirror_ubuntu-zesty-kernel.git / blame