FordPrfkt

I found the Problem. The Banana Pi M2 Zero claims to be Pin compatible to a Raspberry Pi 3 but it is not. The RPI 3 (and Zero) have I2S_CLK and LRCLK on Pins 12 and 35 of the GPIO Header and the BPI has them on Pin 28 and 27. I throw it in the bin and try to find another board that is compatible (RPIs are unobtainable at the moment)

From this very helpful thread: I learned that I2S0 is disabled in the Banapi Zero M2 by default. I enabled it in my overlay using fragment@0 { target-path = "/soc/i2s@1c22000"; __overlay__ { status = "okay"; }; }; and with this dts: i now have the sound interface! daniel@bananapim2zero:~$ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: D2MicHAT [2MicHAT], device 0: 1c22000.i2s-wm8960-hifi wm8960-hifi-0 [1c22000.i2s-wm8960-hifi wm8960-hifi-0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: sun9ihdmi [sun9i-hdmi], device 0: SUN9I-HDMI PCM i2s-hifi-0 [SUN9I-HDMI PCM i2s-hifi-0] Subdevices: 1/1 Subdevice #0: subdevice #0 and also some kernel error messages: [ 53.784092] wm8960 0-001a: failed to configure clock [ 53.784107] wm8960 0-001a: ASoC: error at snd_soc_dai_hw_params on wm8960-hifi: -22 [ 53.784124] 1c22000.i2s-wm8960-hifi: ASoC: soc_pcm_hw_params() failed (-22) <goes on very long> So now it seems there is something wrong with the clocking. Probably i did not configure the I2S correctly to take MCLK from the HAT but at the moment i got no idea

Hi, i am trying to get the Respeaker 2 Mic Pi hat working on a Banana Pi Zero M2. The HAT uses the WM8960 codec and generates its own I2S MCLK. After some trouble i got the i2c interface working and i2cdetect shows a device at address 0x1a which is correct. But i can not get the I2S interface working. I have added a user overlay with the following .dts: /dts-v1/; /plugin/; / { compatible = "allwinner,sun8i-h3"; fragment@0 { target = <&i2c0>; __overlay__ { #address-cells = <0>; #size-cells = <0>; status = "okay"; wm8960: wm8960{ compatible = "wlf,wm8960"; reg = <0x1a>; #sound-dai-cells = <0>; }; }; }; fragment@1 { target = <&i2s0>; __overlay__ { status = "okay"; pinctrl-0 = <&i2s0_pins>; sound-dai = <&wm8960>; pinctrl-names = "default"; }; }; fragment@2 { target-path = "/"; __overlay__ { sound_i2s { compatible = "simple-audio-card"; simple-audio-card,name = "I2S-master"; simple-audio-card,format = "i2s"; simple-audio-card,bitclock-master = <&codec_dai>; simple-audio-card,frame-master = <&codec_dai>; simple-audio-card,mclk-fs = <256>; status = "okay"; simple-audio-card,widgets = "Microphone", "Mic Jack", "Speaker", "Speaker", "Headphone", "Headphone Jack"; simple-audio-card,routing = "Headphone Jack", "HP_L", "Headphone Jack", "HP_R", "Speaker", "SPK_LP", "Speaker", "SPK_LN", "LINPUT1", "Mic Jack", "LINPUT3", "Mic Jack", "RINPUT1", "Mic Jack", "RINPUT2", "Mic Jack"; simple-audio-card,cpu { sound-dai = <&i2s0>; }; codec_dai,codec { sound-dai = <&wm8960>; }; }; }; }; }; I do not see errors in dmesg but aplay -l only shows the HMDI sound interface. I am stuck here and have not found a good explanation how .dts files exactly work for audio or how to get some error messgae from the kernel to see what is wrong. Kernel Version is 5.15.62-sunxi