Asimov Posted October 1, 2018 Share Posted October 1, 2018 I can enable bananpi M2 ultra sound (headphone and mic on pcb) You must add this on the dtsi file. dma: dma-controller@01c02000 { compatible = "allwinner,sun8i-h3-dma"; reg = <0x01c02000 0x1000>; interrupts = <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>; clocks = <&ccu CLK_BUS_DMA>; resets = <&ccu RST_BUS_DMA>; #dma-cells = <1>; }; codec: codec@01c22c00 { #sound-dai-cells = <0>; compatible = "allwinner,sun8i-h3-codec"; reg = <0x01c22c00 0x300>; interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>; clocks = <&ccu CLK_BUS_CODEC>, <&ccu CLK_CODEC>; clock-names = "apb", "codec"; resets = <&ccu RST_BUS_CODEC>; dmas = <&dma 19>, <&dma 19>; dma-names = "rx", "tx"; allwinner,codec-analog-controls = <&codec_analog>; allwinner,audio-routing = "Headphone", "HP", "LINEIN", "Line In", "MIC1", "MBIAS", "MIC1", "Mic", "MIC2", "HBIAS", "MIC2", "Headset Mic"; status = "okay"; }; codec_analog: codec-analog@01c22f00 { compatible = "allwinner,sun8i-a23-codec-analog"; reg = <0x01c22f00 0x4>; }; Then modules that must be loaded are sun8i_codec_analog 24576 1 sun4i_codec 32768 3 snd_soc_core 118784 2 sun4i_codec,sun8i_codec_analog snd_pcm_dmaengine 16384 1 snd_soc_core snd_pcm 65536 2 snd_pcm_dmaengine,snd_soc_core snd_timer 24576 1 snd_pcm snd 45056 3 snd_timer,snd_soc_core,snd_pcm soundcore 16384 1 snd to test the player execute that to check the sound $ aplay /usr/share/sounds/alsa/Front_Center.wav then execute $ alsamixer to control the volumen and gain To enable mic do that. 1) open alsamixer; 2) press "tab" to switch to capture; 3) press "bar" on the first capture channel; "L_____R" red sign should appear; 4) select by arrow key MIC as the source of the first input source; 2) record a test file: arecord -f cd -D hw:0,0 -d 10 test.wav play it back to test i.e.: mplayer test.wav Thats all ... best regards Asimov 2 Link to comment Share on other sites More sharing options...
mhc Posted April 6, 2020 Share Posted April 6, 2020 Dear Asimov, your instructions worked perfectly for me. Many thanks mhc Link to comment Share on other sites More sharing options...
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