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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" title="Edit this document" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/sdk/pinctrl/pinctrl-configuration.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">PINCTRL 配置</h1>
<div class="date inPage">15 Jan 2024</div><div style="color: gray;">
Read time: 3 minute(s)
</div>
<div class="- topic/body concept/conbody body conbody">
<section class="- topic/section section" id="pinctrl_configuration__section_rws_dfs_21c" data-ofbid="pinctrl_configuration__section_rws_dfs_21c"><h2 class="- topic/title title sectiontitle">内核配置</h2>
<div class="- topic/p p" data-ofbid="d164067e38__20250123155217">
<ol class="- topic/ol ol" id="pinctrl_configuration__ol_mnd_xdr_sdc" data-ofbid="pinctrl_configuration__ol_mnd_xdr_sdc">
<li class="- topic/li li" data-ofbid="d164067e42__20250123155217">
<div class="- topic/div div">
<div class="- topic/p p" data-ofbid="d164067e46__20250123155217">在 SDK 根目录下，执行下列命令，进入 kernel
的功能配置界面：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="pinctrl_configuration__codeblock_wg1_3ml_sdc" data-ofbid="pinctrl_configuration__codeblock_wg1_3ml_sdc"><code>make kernel-menuconfig</code></pre></div>
<p class="- topic/p p" data-ofbid="d164067e51__20250123155217">或使用简写命令</p>
<div class="- topic/p p" data-ofbid="d164067e54__20250123155217">
<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="pinctrl_configuration__codeblock_uss_hml_sdc" data-ofbid="pinctrl_configuration__codeblock_uss_hml_sdc"><code>make km</code></pre>
</div>
</div>
</li>
<li class="- topic/li li" data-ofbid="d164067e62__20250123155217">
<div class="- topic/p p" data-ofbid="d164067e64__20250123155217">在内核配置界面，按如下选择：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="pinctrl_configuration__pre_sws_dfs_21c" data-ofbid="pinctrl_configuration__pre_sws_dfs_21c"><code>Linux
Device Drivers
Pin controllers---&gt;
[*] ArtInChip pin controller version1 device driver
</code></pre></div>
</li>
</ol>
</div>
</section>
<section class="- topic/section section" id="pinctrl_configuration__section_tws_dfs_21c" data-ofbid="pinctrl_configuration__section_tws_dfs_21c"><h2 class="- topic/title title sectiontitle">DTS 配置</h2>
<div class="- topic/p p" data-ofbid="d164067e78__20250123155217">
<ul class="- topic/ul ul" id="pinctrl_configuration__ul_jqk_ffs_21c" data-ofbid="pinctrl_configuration__ul_jqk_ffs_21c">
<li class="- topic/li li" data-ofbid="d164067e82__20250123155217">在 <span class="+ topic/ph sw-d/filepath ph filepath">board.dtsi</span> 文件中，配置 pinctrl
结点：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="pinctrl_configuration__pre_uws_dfs_21c" data-ofbid="pinctrl_configuration__pre_uws_dfs_21c"><code>pinctrl: pinctrl@<span class="hl-number">19200000</span> {
compatible = <span class="hl-string">"artinchip,aic-pinctrl-v1.0"</span>;
reg = &lt;<span class="hl-number">0x19200000</span> <span class="hl-number">0x800</span>&gt;;
clocks = &lt;&amp;cmu CLK_GPIO&gt;;
resets = &lt;&amp;rst RESET_GPIO&gt;;
};
</code></pre></li>
<li class="- topic/li li" data-ofbid="d164067e90__20250123155217">在 <span class="+ topic/ph sw-d/filepath ph filepath">board.dtsi</span> 文件，配置 SoC 中所有功能模块的 pins 结点信息。<div class="- topic/p p" data-ofbid="d164067e95__20250123155217">以 GPIOA
为例说明，如下所示：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="pinctrl_configuration__pre_wws_dfs_21c" data-ofbid="pinctrl_configuration__pre_wws_dfs_21c"><code>gpio_a: bank-<span class="hl-number">0</span> {
interrupts-extended = &lt;&amp;plic0 <span class="hl-number">68</span> IRQ_TYPE_LEVEL_HIGH&gt;;
gpio-controller;
artinchip,bank-port = &lt;<span class="hl-number">0</span>&gt;;
artinchip,bank-name = <span class="hl-string">"PA"</span>;
gpio-ranges = &lt;&amp;pinctrl <span class="hl-number">0</span> <span class="hl-number">0</span> <span class="hl-number">12</span>&gt;;
gpio_regs = &lt;<span class="hl-number">0x0000</span> <span class="hl-number">0x0004</span> <span class="hl-number">0x0008</span> <span class="hl-number">0x000C</span> <span class="hl-number">0x0010</span> <span class="hl-number">0x0080</span>&gt;;
debounce = &lt;<span class="hl-number">1</span>&gt;;
#gpio-cells = &lt;<span class="hl-number">2</span>&gt;;
interrupt-controller;
#interrupt-cells = &lt;<span class="hl-number">2</span>&gt;;
};
</code></pre></div><ul class="- topic/ul ul" id="pinctrl_configuration__ul_xws_dfs_21c" data-ofbid="pinctrl_configuration__ul_xws_dfs_21c">
<li class="- topic/li li" data-ofbid="d164067e101__20250123155217">
<p class="- topic/p p" data-ofbid="d164067e103__20250123155217"><span class="+ topic/keyword pr-d/parmname keyword parmname">artinchip,bank-port</span>：GPIOA 的索引值</p>
</li>
<li class="- topic/li li" data-ofbid="d164067e109__20250123155217">
<p class="- topic/p p" data-ofbid="d164067e111__20250123155217"><span class="+ topic/keyword pr-d/parmname keyword parmname">artinchip,bank-name</span>：GPIOA 在 chip 结构体中的名字</p>
</li>
<li class="- topic/li li" data-ofbid="d164067e117__20250123155217">
<p class="- topic/p p" data-ofbid="d164067e119__20250123155217"><span class="+ topic/keyword pr-d/parmname keyword parmname">gpio-ranges</span>：第一个数值表示 GPIOA 的第一个 pin 脚在 GPIOA
中的索引值。第二个数值表示 GPIOA 的第一个 pin 脚在整个 SOC 的 GPIO 中的序号索引值。第三个数值表示
GPIOA 中 pin 脚的个数</p>
</li>
<li class="- topic/li li" data-ofbid="d164067e125__20250123155217">
<p class="- topic/p p" data-ofbid="d164067e127__20250123155217"><span class="+ topic/keyword pr-d/parmname keyword parmname">interrupt-controller</span>：GPIOA 使用中断时，把 GPIOA
看做是一个中断控制器</p>
</li>
</ul></li>
<li class="- topic/li li" data-ofbid="d164067e134__20250123155217">功能模块 pin 脚复用 DTS 配置<p class="- topic/p p" data-ofbid="d164067e136__20250123155217">以 uart0
的引脚复用为例进行说明：</p><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="pinctrl_configuration__pre_zws_dfs_21c" data-ofbid="pinctrl_configuration__pre_zws_dfs_21c"><code>uart0_pins_a: uart0-<span class="hl-number">0</span> {
pins {
pinmux = &lt;AIC_PINMUX(<span class="hl-string">'A'</span>, <span class="hl-number">0</span>, <span class="hl-number">5</span>)&gt;,
&lt;AIC_PINMUX(<span class="hl-string">'A'</span>, <span class="hl-number">1</span>, <span class="hl-number">5</span>)&gt;;
bias-disable;
drive-strength = &lt;<span class="hl-number">3</span>&gt;;
};
};
</code></pre><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="pinctrl_configuration__codeblock_rlr_m2r_sdc" data-ofbid="pinctrl_configuration__codeblock_rlr_m2r_sdc"><code>uart0_pins_b: uart0-<span class="hl-number">1</span> {
pins {
pinmux = &lt;AIC_PINMUX(<span class="hl-string">'A'</span>, <span class="hl-number">2</span>, <span class="hl-number">5</span>)&gt;,
&lt;AIC_PINMUX(<span class="hl-string">'A'</span>, <span class="hl-number">3</span>, <span class="hl-number">5</span>)&gt;;
bias-disable;
drive-strength = &lt;<span class="hl-number">3</span>&gt;;
};
};
</code></pre><div class="- topic/p p" data-ofbid="d164067e142__20250123155217"><span class="+ topic/ph sw-d/filepath ph filepath">board.dtsi</span> 文件描述了各个模块所有的 pin
脚配置信息。<ul class="- topic/ul ul" id="pinctrl_configuration__ul_vlz_22r_sdc" data-ofbid="pinctrl_configuration__ul_vlz_22r_sdc">
<li class="- topic/li li" data-ofbid="d164067e148__20250123155217"><span class="+ topic/keyword pr-d/parmname keyword parmname">uart0_pins_a</span> 和
<span class="+ topic/keyword pr-d/parmname keyword parmname">uart0_pins_b</span>：分别为 UART0 的不同引脚配置。</li>
<li class="- topic/li li" data-ofbid="d164067e156__20250123155217"><span class="+ topic/keyword pr-d/parmname keyword parmname">pinmux</span>：模块使用的的引脚配置信息：<ul class="- topic/ul ul" id="pinctrl_configuration__ul_ysx_j2r_sdc" data-ofbid="pinctrl_configuration__ul_ysx_j2r_sdc">
<li class="- topic/li li" data-ofbid="d164067e162__20250123155217"><span class="+ topic/keyword pr-d/parmname keyword parmname">AIC_PINMUX</span>：自定义宏，表示 u32 数据</li>
<li class="- topic/li li" data-ofbid="d164067e167__20250123155217">AIC_PINMUX(‘A’, <var class="+ topic/keyword sw-d/varname keyword varname">pin</var>,
<var class="+ topic/keyword sw-d/varname keyword varname">function</var>)：以
<span class="+ topic/keyword pr-d/parmname keyword parmname">AIC_PINMUX('A', 2, 5)</span> 为例，表示将
PA2 脚配置为 function 5，即可作为 uart
引脚。<p class="- topic/p p" data-ofbid="d164067e178__20250123155217">如以上示例描述，<span class="+ topic/keyword pr-d/parmname keyword parmname">uart0_pins_a</span> 使用
PA0 和 PA1 作为 pin 脚，<span class="+ topic/keyword pr-d/parmname keyword parmname">uart_pins_b</span>
使用是 PA2 和 PA3 作为 pin 脚。</p></li>
</ul></li>
</ul></div></li>
<li class="- topic/li li" data-ofbid="d164067e189__20250123155217">功能模块 pin 脚引用 DTS 配置<p class="- topic/p p" data-ofbid="d164067e191__20250123155217">在 <span class="+ topic/ph sw-d/filepath ph filepath">board.dtsi</span> 文件中，列出了所有的模块的 pin
脚配置信息。一般在 <span class="+ topic/ph sw-d/filepath ph filepath">board.dtsi</span> 文件中指定模块具体使用的 pin 脚组合。在
<span class="+ topic/ph sw-d/filepath ph filepath">board.dtsi</span> 文件，各个模块的结点引用 pinctrl 的 pin
脚配置，声明本模块所使用的 pin 脚。如下图，uart0 使用 uart0_pins_a 的引脚配置，即使用 PA0 和 PA1
脚。</p><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="pinctrl_configuration__pre_bxs_dfs_21c" data-ofbid="pinctrl_configuration__pre_bxs_dfs_21c"><code>&amp;uart0 {
pinctrl-names = <span class="hl-string">"default"</span>;
pinctrl-<span class="hl-number">0</span> = &lt;&amp;uart0_pins_a&gt;;
status = <span class="hl-string">"okay"</span>;
};</code></pre></li>
</ul>
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<div class=" wh_topic_toc "><div class="wh_topic_label">在本页上</div><ul><li class="section-item"><div class="section-title"><a href="#pinctrl_configuration__section_rws_dfs_21c" data-tocid="pinctrl_configuration__section_rws_dfs_21c">内核配置</a></div></li><li class="section-item"><div class="section-title"><a href="#pinctrl_configuration__section_tws_dfs_21c" data-tocid="pinctrl_configuration__section_tws_dfs_21c">DTS 配置</a></div></li></ul></div>
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