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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic concept/concept topic concept" role="article" aria-labelledby="ariaid-title1"><span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/sdk/i2s/i2s_config_guide.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">I2S 配置</h1><div class="date inPage">2 Dec 2024</div><div style="color: gray;">
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Read time: 1 minute(s)
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</div><div class="- topic/body concept/conbody body conbody"><div class="- topic/p p" data-ofbid="d40412e22__20250121171516">I2S 包括以下配置内容：<ol class="- topic/ol ol" id="i2s_configuration__ul_nzz_mf3_d1c" data-ofbid="i2s_configuration__ul_nzz_mf3_d1c"><li class="- topic/li li" data-ofbid="d40412e25__20250121171516">内核配置<p class="- topic/p p" data-ofbid="d40412e27__20250121171516">按照 ALSA 的框架设计，I2S 的数据传输使用 DMA 方式，需要 engine 的支持，所以在 menuconfig 中
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需要打开 engine 的驱动支持。</p><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="i2s_configuration__pre_bjv_nf3_d1c" data-ofbid="i2s_configuration__pre_bjv_nf3_d1c">Device Drivers--->
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[*] DMA Engine support--->
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<*> ArtInChip SoCs DMA support
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</pre><p class="- topic/p p" data-ofbid="d40412e31__20250121171516">在 menuconfig 中打开 ALSA 框架的支持，使能 AIC 的 I2S 驱动</p></li><li class="- topic/li li" data-ofbid="d40412e33__20250121171516">
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<div class="- topic/p p" data-ofbid="d40412e35__20250121171516">DTS 配置<ul class="- topic/ul ul" id="i2s_configuration__ul_ks1_tf3_d1c" data-ofbid="i2s_configuration__ul_ks1_tf3_d1c"><li class="- topic/li li" data-ofbid="d40412e38__20250121171516">
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<div class="- topic/p p" data-ofbid="d40412e40__20250121171516">D211<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="i2s_configuration__codeblock_zd2_sf3_d1c" data-ofbid="i2s_configuration__codeblock_zd2_sf3_d1c">i2s0: i2s@<span class="hl-number">18600000</span> {
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#sound-dai-cells = <<span class="hl-number">0</span>>;
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compatible = <span class="hl-string">"artinchip,aic-i2s-v1.0"</span>;
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reg = <<span class="hl-number">0x18600000</span> <span class="hl-number">0x400</span>>;
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interrupts = <GIC_SPI <span class="hl-number">20</span> IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&cmu CLK_I2S0>;
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resets = <&rst RESET_I2S0>;
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dmas = <&dma DMA_I2S0>, <&dma DMA_I2S0>;
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dma-names = <span class="hl-string">"rx"</span>, <span class="hl-string">"tx"</span>;
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};
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i2s1: i2s@<span class="hl-number">18601000</span> {
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#sound-dai-cells = <<span class="hl-number">0</span>>;
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compatible = <span class="hl-string">"artinchip,aic-i2s-v1.0"</span>;
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reg = <<span class="hl-number">0x18601000</span> <span class="hl-number">0x400</span>>;
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interrupts = <GIC_SPI <span class="hl-number">21</span> IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&cmu CLK_I2S1>;
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resets = <&rst RESET_I2S1>;
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dmas = <&dma DMA_I2S1>, <&dma DMA_I2S1>;
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dma-names = <span class="hl-string">"rx"</span>, <span class="hl-string">"tx"</span>;
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};</pre></div>
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</li><li class="- topic/li li" data-ofbid="d40412e45__20250121171516">
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<div class="- topic/p p" data-ofbid="d40412e47__20250121171516"><span class="+ topic/ph sw-d/filepath ph filepath">xxx/board.dts</span>
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中的配置<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="i2s_configuration__codeblock_cbr_sf3_d1c" data-ofbid="i2s_configuration__codeblock_cbr_sf3_d1c">&i2s0 {
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pinctrl-names = <span class="hl-string">"default"</span>;
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pinctrl-<span class="hl-number">0</span> = <&i2s0_clk_pins>;
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status = <span class="hl-string">"disabled"</span>;
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};
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&i2s1 {
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pinctrl-names = <span class="hl-string">"default"</span>;
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pinctrl-<span class="hl-number">0</span> = <&i2s1_clk_pins>, <&i2s1_mclk_pins>, <&i2s1_din_pins_b>;
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status = <span class="hl-string">"okay"</span>;
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};</pre></div>
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</li><li class="- topic/li li" data-ofbid="d40412e54__20250121171516">
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<p class="- topic/p p" data-ofbid="d40412e56__20250121171516">根据实际的板型配置，使能相应的 I2S。</p>
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</li></ul></div>
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