forked from Qortal/Brooklyn
55 lines
1.1 KiB
Plaintext
55 lines
1.1 KiB
Plaintext
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/*
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* Definitions for Allo Piano DAC (2.0/2.1) boards
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*
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* NB. The Piano DAC 2.1 board contains 2x TI PCM5142 DAC's. One DAC is stereo
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* (left/right) and the other provides a subwoofer output, using DSP on the
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* chip for digital high/low pass crossover.
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* The initial support for this hardware, that doesn't require any codec driver
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* modifications, uses only one DAC chip for stereo (left/right) output, the
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* chip with 0x4c slave address. The other chip at 0x4d is currently ignored!
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*/
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/dts-v1/;
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/plugin/;
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/ {
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compatible = "brcm,bcm2835";
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fragment@0 {
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target = <&i2s>;
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__overlay__ {
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status = "okay";
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};
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};
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fragment@1 {
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target = <&i2c1>;
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__overlay__ {
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#address-cells = <1>;
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#size-cells = <0>;
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status = "okay";
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pcm5142@4c {
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#sound-dai-cells = <0>;
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compatible = "ti,pcm5142";
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reg = <0x4c>;
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status = "okay";
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};
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};
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};
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fragment@2 {
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target = <&sound>;
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piano_dac: __overlay__ {
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compatible = "allo,piano-dac";
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i2s-controller = <&i2s>;
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status = "okay";
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};
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};
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__overrides__ {
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24db_digital_gain =
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<&piano_dac>,"allo,24db_digital_gain?";
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};
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};
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