Axg card codec dai-link not appearing in user space

[amusz]

I’m trying to define a simple sound card where I just have a TDM output on TDMA. Now I have defined my device tree as:

 

sound {
		compatible = "amlogic,axg-sound-card";
		model = "BPI-CM4IO";
		audio-aux-devs = <&tdmout_a>;
		audio-widgets = "Speaker", "Speaker1 Left",
					"Speaker", "Speaker1 Right";
		audio-routing = "TDMOUT_A IN 0", "FRDDR_A OUT 0",
				"TDM_A Playback", "TDMOUT_A OUT",
				"Speaker1 Left", "SPK1 OUT_A",
				"Speaker1 Right", "SPK1 OUT_B";

		clocks = <&clkc CLKID_HIFI_PLL>,
			 <&clkc CLKID_MPLL0>,
			 <&clkc CLKID_MPLL1>;

		assigned-clocks = <&clkc CLKID_HIFI_PLL>,
				  <&clkc CLKID_MPLL0>,
				  <&clkc CLKID_MPLL1>;
		assigned-clock-parents = <0>, <0>, <0>;
		assigned-clock-rates = <589824000>,
				       <270950400>,
				       <393216000>;

		dai-link-0 {
			sound-dai = <&frddr_a>;
		};

		dai-link-1 {
    		sound-dai = <&tdmif_a>;
    		dai-format = "dsp_a";
			dai-slot-num= <2>;
			dai-tdm-slot-width = <32>;	
			dai-tdm-slot-tx-mask-0 = <1 1>;
			codec {
				sound-dai = <&dummy_codec1>;
			};
		};
};

 

however, aplay -l gives: **** List of PLAYBACK Hardware Devices **** card 0: BPICM4IO [BPI-CM4IO], device 0: fe.dai-link-0 (*)  Subdevices: 1/1 Subdevice #0: subdevice #0

 

Why am I not seeing the sound dai link 1 ? And how then is the user supposed to select in which TDM slot to play if so. Is this expected ? As I understand it If I have several codecs I would define a different "dai-tdm-slot-tx-mask-xxx " for each dai link with a different codec. The dummy codec I’m using is based on pcm5102 as it does not require i2c for testing and probes with minimum effort.

Any comments are aprecciated