[参考译文] AM62P：AXR0 上仅 McASP 数据流

Other Parts Discussed in Thread: AM62P

https://e2e.ti.com/support/audio-group/audio/f/audio-forum/1614809/am62p-mcasp-data-only-streams-on-axr0

部件号： AM62P

您好、  
我将使用 AM62P 开发定制电路板、并使用 TLV320DAC3203IRGE 和 TAS5731MPHPR 进行音频再现。
设备树中有此配置。

/{
	codec_audio: sound {
        compatible = "simple-audio-card";
        simple-audio-card,name = "Lohr-Full-Audio";
        status = "okay";

        #address-cells = <1>;
        #size-cells = <0>;

		simple-audio-card,mclk-fs = <512>;

        /* --- LINK 0: TAS5731 --- */
        simple_dai0: simple-audio-card,dai-link@0 {
            reg = <0>;
            format = "i2s";
            bitclock-master = <&cpulink0>;
            frame-master = <&cpulink0>;

            cpulink0: cpu {
                sound-dai = <&mcasp2>;
                system-clock-direction-out;
            };

            codec0: codec {
                sound-dai = <&tas5731>;
				clocks = <&audio_refclk0>;
				clock-names = "mclk";
                system-clock-frequency = <24576000>;
				simple-audio-card,prefix = "AMP";
				auxclk-fs-ratio = <512>;
            };
        };

		/* --- LINK 1: TLV320DAC3203 (U8) --- */
        simple_dai1: simple-audio-card,dai-link@1 {
            reg = <1>;
            format = "i2s";
			bitclock-master = <&cpulink1>;
            frame-master = <&cpulink1>;

            cpulink1: cpu {
                sound-dai = <&mcasp2>;
            };

            codec1: codec {
                sound-dai = <&audio1>;
				clocks = <&audio_refclk0>;
				clock-names = "mclk";
				simple-audio-card,prefix = "DAC1";
				system-clock-frequency = <24576000>;
				auxclk-fs-ratio = <512>;
            };
        };
	};
};

&mcasp2 {
    status = "okay";
	#sound-dai-cells = <0>;

    pinctrl-names = "default";
    pinctrl-0 = <&mcasp_audio_in_out_pins_default>;

	auxclk-fs-ratio = <512>;
	fck-master;

	op-mode = <0>;          /* Modo I2S */
    tdm-slots = <2>;        /* Stereo */

    serial-dir = <
				1 1 0 0 
				0 0 0 0
				0 0 0 0 
				0 0 0 0
				>;

	clocks = <&k3_clks 157 0>, <&k3_clks 157 16>;
	clock-names = "fck", "mcasp_aux_clk";

	assigned-clocks = <&k3_clks 157 0>;
	assigned-clock-parents = <&k3_clks 157 16>;
    assigned-clock-rates = <24576000>;

	tdm-mask = <0x3>;
};

&main_i2c0 {
	status = "okay";
	pinctrl-names = "default";
	pinctrl-0 = <&main_i2c0_pins_default>;
	clock-frequency = <400000>;

	audio1: audio1@18 {
		// TLV320DAC3203IRGE (ADC/DAC)
		compatible = "ti,tlv320aic32x4";
        reg = <0x18>;

		pinctrl-names = "default";
		pinctrl-0 = <&main_rst_dac1_pins_default>;

		#sound-dai-cells = <0>;
		reset-gpios = <&main_gpio0 45 GPIO_ACTIVE_HIGH>;
	    		
		clocks = <&k3_clks 157 16>;
		clock-names = "mclk";

		assigned-clocks = <&k3_clks 157 16>;
    	assigned-clock-rates = <24576000>;

		sound-name-prefix = "AIC1";

		iov-supply = <&vcc_3v3_main>;
        ldoin-supply = <&vcc_3v3_main>;

		aic32x4-gpio-func = <0xff 0xff 0xff 0xff 0xff>;

		gpio-controller;
		#gpio-cells = <2>;
		
		status = "okay";
	};
};

&main_i2c2 {
	status = "okay";
	pinctrl-names = "default";
	pinctrl-0 = <&main_i2c2_pins_default>;
	clock-frequency = <400000>;

	tas5731: audio-codec@1a {
		compatible = "ti,tas5717";
		reg = <0x1a>;

		pinctrl-names = "default";
		pinctrl-0 = <&main_amp_rst_pins_default>,
					<&main_amp_pwr_down_pins_default>;

		#sound-dai-cells = <0>;
		reset-gpios = <&main_gpio0 15 GPIO_ACTIVE_HIGH>;
		pdn-gpios = <&main_gpio0 16 GPIO_ACTIVE_HIGH>;

		clocks = <&k3_clks 157 16>;
		clock-names = "mclk";

		assigned-clocks = <&k3_clks 157 16>;
		assigned-clock-rates = <24576000>;

		sound-name-prefix = "tas-1";

		AVDD-supply  = <&vcc_3v3_sys>;
		DVDD-supply  = <&vcc_3v3_sys>;
		PVDD_AB-supply = <&en_pwr_17v>;
		PVDD_CD-supply = <&en_pwr_17v>;
	};
};

&main_pmx0{
	mcasp_audio_in_out_pins_default: mcasp-audio-in-out-default-pins {
	pinctrl-single,pins = <
		AM62PX_IOPAD(0x0170, PIN_INPUT, 2) /* (A21) RGMII2_TD1.MCASP2_ACLKR */
		AM62PX_IOPAD(0x0178, PIN_OUTPUT, 2) /* (A19) RGMII2_TD3.MCASP2_ACLKX */
		AM62PX_IOPAD(0x0188, PIN_INPUT, 2) /* (E16) RGMII2_RD1.MCASP2_AFSR */
		AM62PX_IOPAD(0x0174, PIN_OUTPUT, 2) /* (D17) RGMII2_TD2.MCASP2_AFSX */
		AM62PX_IOPAD(0x018c, PIN_OUTPUT, 2) /* (E17) RGMII2_RD2.MCASP2_AXR0 */
		AM62PX_IOPAD(0x0180, PIN_OUTPUT, 2) /* (D19) RGMII2_RXC.MCASP2_AXR1 */
    >;
};

&audio_refclk0 {
	#clock-cells = <0>;

	pinctrl-names = "default";
	pinctrl-0 = <&audio_ext_refclk_pins_default>;

	clocks = <&k3_clks 157 16>;
	assigned-clocks = <&k3_clks 157 0>;
	assigned-clock-parents = <&k3_clks 157 16>;

	assigned-clock-rates = <24576000>;

    status = "okay";
};

&k3_clks {
	assigned-clocks = <&k3_clks 157 16>;
	status = "okay";
};

如果我运行此命令 avplay -D HW：0、0 Audio_1kHz_32767.wav、则表示我在 AXR0 上看到信号、但当我运行 avplay -D HW：0、1 Audio_1kHz_32767.wav 时、我也看到 AXR0 上的信号。

如何使信号传输到 AXR1？

此致。