[参考译文] TLV320AIC3106：适用于 SPI 的 AM43xx Linux 参考集成

您好、Peter、  

您能否分享您遇到的错误？  

此外、 我们在支持常见问题 页面上提供了有关驱动程序的更多信息。  

此致、  

Justin Beigel

您好 Justin、

以下是我根据您的常见问题解答和驱动程序文档进行的设置：

	sound {
		compatible = "simple-audio-card";
		simple-audio-card,name = "SMaWay Audio";
		simple-audio-card,widgets =
			"Headphone", "Headphone Jack",
			"Line", "Line In";
		simple-audio-card,routing =
			"Headphone Jack",	"HPLOUT",
			"Headphone Jack",	"HPROUT",
			"LINE1L",		"Line In",
			"LINE1R",		"Line In";
		simple-audio-card,format = "dsp_b";
		simple-audio-card,bitclock-master = <&sound_master>;
		simple-audio-card,frame-master = <&sound_master>;
		simple-audio-card,bitclock-inversion;

		simple-audio-card,cpu {
			sound-dai = <&mcasp1>;
		};

		sound_master: simple-audio-card,codec {
			sound-dai = <&tlv320aic3x>;
			system-clock-frequency = <12000000>;
		};
		
	...
	
	&spi4 {
	#address-cells = <1>;
    #size-cells = <0>;

	status = "okay";
	pinctrl-names = "default";
	pinctrl-0 = <&spi4_pins>;

	tlv320aic3x: codec@0 {
		compatible = "ti,tlv320aic3x";
		reg = <0>; // CS number
		#sound-dai-cells = <0>;
		spi-max-frequency = <1000000>;
		AVDD-supply = <&dcdc4>;
		DRVDD-supply = <&dcdc4>;
		DVDD-supply = <&ldo1>;
		ai3x-ocmv = <0>;
	};
};

&mcasp0 {
	#sound-dai-cells = <0>;
	pinctrl-names = "default", "sleep";
	pinctrl-0 = <&mcasp0_pins>;

	status = "okay";

	op-mode = <0>;          /* MCASP_IIS_MODE */
	tdm-slots = <2>;
	/* 4 serializers */
	serial-dir = <  /* 0: INACTIVE, 1: TX, 2: RX */
		0 0 1 2
	>;
	tx-num-evt = <32>;
	rx-num-evt = <32>;
};

在进行一些更改后、我实际上不再收到此警告：

arch/arm/boot/dts/am437x-smaway.dtb: Warning (sound_dai_property): /sound/simple-audio-card,cpu: Missing property '#sound-dai-cells' in node /ocp@44000000/mcasp@4803c000 or bad phandle (referred from sound-dai[0])

我可以忽略这一点、还是对如何优化 DTS 有进一步的建议？

此致
Peter

尊敬的 Peter：

如果这些只是警告、您现在很可能会忽略。
遗憾的是、对音频转换器驱动程序的支持现在正在进行转换、因此我们无法为与硬件或器件本身无关的内容提供更多支持。

此致、
－Ivan Salazar
应用工程师

您好、Ivan、

遗憾的是、这不仅是警告、而且内核未检测到模块。

这是我的 DTS：

	sound {
		compatible = "simple-audio-card";
		simple-audio-card,name = "SMaWay Audio";
		simple-audio-card,widgets =
			"Headphone", "Headphone Jack",
			"Line", "Line In";
		simple-audio-card,routing =
			"Headphone Jack",	"HPLOUT",
			"Headphone Jack",	"HPROUT",
			"LINE1L",		"Line In",
			"LINE1R",		"Line In";
		simple-audio-card,format = "dsp_b";
		simple-audio-card,bitclock-master = <&sound_master>;
		simple-audio-card,frame-master = <&sound_master>;
		simple-audio-card,bitclock-inversion;

		simple-audio-card,cpu {
			sound-dai = <&mcasp1>;
		};

		sound_master: simple-audio-card,codec {
			sound-dai = <&tlv320aic3x>;
			system-clock-frequency = <12000000>;
		};
		
...

	spi4_pins: spi4_pins {
		pinctrl-single,pins = <
			AM4372_IOPAD(0xa50, PIN_OUTPUT | MUX_MODE0) // (P25) spi4_sclk.spi4_sclk 
			AM4372_IOPAD(0xa54, PIN_OUTPUT | MUX_MODE0) // (R24) spi4_d0.spi4_d0 
			AM4372_IOPAD(0xa58, PIN_OUTPUT | MUX_MODE0) // (P24) spi4_d1.spi4_d1 
			AM4372_IOPAD(0xa5c, PIN_OUTPUT | MUX_MODE0) // (N25) spi4_cs0.spi4_cs0 
		>;
	};

...

&spi4 {
	#address-cells = <1>;
    #size-cells = <0>;

	status = "okay";
	pinctrl-names = "default";
	pinctrl-0 = <&spi4_pins>;

	tlv320aic3x: codec@0 {
		compatible = "ti,tlv320aic3x";
		reg = <0>; // CS number
		#sound-dai-cells = <0>;
		spi-max-frequency = <1000000>;
		AVDD-supply = <&dcdc4>;
		DRVDD-supply = <&dcdc4>;
		DVDD-supply = <&ldo1>;
		ai3x-ocmv = <0>;
	};
};

&mcasp0 {
	#sound-dai-cells = <0>;
	pinctrl-names = "default", "sleep";
	pinctrl-0 = <&mcasp0_pins>;

	status = "okay";

	op-mode = <0>;          /* MCASP_IIS_MODE */
	tdm-slots = <2>;
	/* 4 serializers */
	serial-dir = <  /* 0: INACTIVE, 1: TX, 2: RX */
		0 0 1 2
	>;
	tx-num-evt = <32>;
	rx-num-evt = <32>;
};

鉴于 SPI4引脚排列正确、您是否有任何想法、我们可能出了什么问题？

此致
Peter

尊敬的 Peter：

我将看一下这个、看看是否有任何帮助、 尽管我不是驱动程序/软件方面的专家、 但正如前面提到的、目前对这些与芯片本身不直接相关的工具的支持是有限的。 如果我能提供任何意见、我将在本周结束前再次与您进行讨论。

此致、
－Ivan Salazar
应用工程师

感谢您的努力。 "过渡"是否意味着您正在放弃此产品系列、我们不应将该模块用于新设计？

Peter、

实际上、我所说的转换只是产品的支持。 该器件将保持正常生产、但会在支持和开发方面分配给不同的团队。

此致、
－Ivan Salazar
应用工程师  

有新消息吗？

这种过渡持续多久、以及何时可以从您那里获得支持？
随着测试和生产计划的中断、这给我们带来了一种严峻的形势。