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id="id-d4445e7075-link">PSADC 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="uart_user_guide-d4445e7215" class="topicref" data-id="uart_user_guide" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action uart_user_guide-d4445e7215-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/uart/uart_user_guide.html" id="uart_user_guide-d4445e7215-link">UART 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="usb_user_guide-d4445e7299" class="topicref" data-id="usb_user_guide" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action usb_user_guide-d4445e7299-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/usb/usb_user_guide.html" id="usb_user_guide-d4445e7299-link">USB 使用指南</a></div></div></li></ul></li><li role="treeitem" aria-expanded="false"><div data-tocid="chapter-safety-d4445e7944" 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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">
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<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-user-guide.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">PINCTRL 使用指南</h1>
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<div class="date inPage">15 Jan 2024</div><div style="color: gray;">
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Read time: 1 minute(s)
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<p class="- topic/p p" data-ofbid="d158557e33__20250123155216">PINCTRL 模块，负责管理 SOC 中各个 pin 的状态，如驱动能力，内部是否有上下拉，gpio 的输入输出，以及是否功能复用等。通过 PINCTRL 模块，将 SOC 的 pin 脚个数，各个 pin 脚可实现的功能等信息统一注册到内核中，方便系统进行统一管理。</p>
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<p class="- topic/p p" data-ofbid="d158557e36__20250123155216">在 linux 内核中，pin 的功能复用由 pinctrl 子系统实现，gpio 的输入、输出、中断功能由 gpio 子系统实现。而 AIC 的 PINCTRL 模块，既包括了 gpio 的输入输出功能，也包括了 pin 的功能复用。所以在驱动实现上，统一将这些功能分类整合到 pinctrl 子系统的框架下，即硬件 gpio 模块的驱动实现在 pinctrl 子系统下。PINCTRL 驱动实际包含了 3 个子系统的内容：gpio 子系统，pinctrl 子系统，以及 irqchip 子系统的驱动。</p>
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<div class="table-container"><table class="- topic/table table frame-all" id="pinctrl_user_guide__table_txv_1fs_21c" data-ofbid="pinctrl_user_guide__table_txv_1fs_21c" data-cols="3"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 1</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">术语定义</span></caption><colgroup><col style="width:33.33333333333333%"/><col style="width:33.33333333333333%"/><col style="width:33.33333333333333%"/></colgroup><thead class="- topic/thead thead">
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<th class="- topic/entry entry colsep-1 rowsep-1" id="pinctrl_user_guide__table_txv_1fs_21c__entry__1">术语</th>
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<th class="- topic/entry entry colsep-1 rowsep-1" id="pinctrl_user_guide__table_txv_1fs_21c__entry__2">定义</th>
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<th class="- topic/entry entry colsep-0 rowsep-1" id="pinctrl_user_guide__table_txv_1fs_21c__entry__3">注释说明</th>
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</thead><tbody class="- topic/tbody tbody">
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="pinctrl_user_guide__table_txv_1fs_21c__entry__1">GPIO</td>
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="pinctrl_user_guide__table_txv_1fs_21c__entry__2">General Purpose Input Output</td>
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<td class="- topic/entry entry colsep-0 rowsep-1" headers="pinctrl_user_guide__table_txv_1fs_21c__entry__3">通用输入输出</td>
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="pinctrl_user_guide__table_txv_1fs_21c__entry__1">GIC</td>
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="pinctrl_user_guide__table_txv_1fs_21c__entry__2">Generic Interrupt Controller</td>
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<td class="- topic/entry entry colsep-0 rowsep-1" headers="pinctrl_user_guide__table_txv_1fs_21c__entry__3">通用中断控制器</td>
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<tr class="- topic/row">
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<td class="- topic/entry entry colsep-1 rowsep-0" headers="pinctrl_user_guide__table_txv_1fs_21c__entry__1">PINCTRL</td>
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<td class="- topic/entry entry colsep-1 rowsep-0" headers="pinctrl_user_guide__table_txv_1fs_21c__entry__2">Pin Controller</td>
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<td class="- topic/entry entry colsep-0 rowsep-0" headers="pinctrl_user_guide__table_txv_1fs_21c__entry__3">pin 脚控制器</td>
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