[C12] add TLV320AIC32X4 audio support
* audio over SAI2 interface * output needs to be enabled: /usr/bin/amixer sset -q 'LO Driver Gain' 100% * sound works only at 48000Hz: this derives from SAI2 assigned clock rate. * Filesystem support for pulseaudio: /etc/pulse/daemon.conf --> default-sample-rate = 48000 alternate-sample-rate = 48000 * on carrier B79: I2S0 to audio jack CN41 (switch SW16 2-4 position OFF, jumper CN82 position 2-3)
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