[linux-sunxi] A64 Audio

[Rudolf Streif]

We have a custom board with A64. For audio there is only an amplifier 
connected to LINEOUT. There is no headphone jack and the HP-DET pin is 
floating. I enabled the sound device in the device tree and card0 shows up. 
Tools like aplay show that a sound is being played back but there is no 
sound. I am suspecting that there is something amiss with the audio 
routing. The dts is including the sun50i-a64.dtsi. These are the device 
tree nodes in the board's dts:

&sound {
        simple-audio-card,aux-devs = <&codec_analog>, <&speaker_amp>;
        simple-audio-card,widgets = "Speaker", "Internal Speaker";
        simple-audio-card,routing =
                        "Left DAC", "DACL",
                        "Right DAC", "DACR",
                        "Speaker Amp INL", "LINEOUT",
                        "Speaker Amp INR", "LINEOUT",
                        "Internal Speaker", "Speaker Amp OUTL",
                        "Internal Speaker", "Speaker Amp OUTR",
                        "ADCL", "Left ADC",
                        "ADCR", "Right ADC";
        status = "okay";
};

        speaker_amp: audio-amplifier {
                compatible = "simple-audio-amplifier";
                enable-gpios = <&pio 2 0 GPIO_ACTIVE_HIGH>; /* PC0 AUDIO 
AMP ENABLE */
                sound-name-prefix = "Speaker Amp";
                status = "okay";
        };

&codec {
        status = "okay";
};

&codec_analog {
        cpvdd-supply = <&reg_eldo1>;
        status = "okay";
};

I cannot see anything obvious incorrect with that. I would appreciate your 
help.

Thank you,
Rudi

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