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class="shortdesc">主要描述板卡的各项配置，使 SDK 的环境和板卡匹配，并确保 SDK 编译后的固件能够在板子上正常运行。</p></div></div></div><ul role="group" class="navbar-nav nav-list"><li role="treeitem" aria-expanded="false"><div data-tocid="id-d3752e2039" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d3752e2039-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-prepare.html" id="id-d3752e2039-link">准备工作</a></div></div></li><li role="treeitem"><div data-tocid="id-d3752e2097" class="topicref" data-id="id" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-soc.html" id="id-d3752e2097-link">引脚配置</a></div></div></li><li role="treeitem"><div data-tocid="id-d3752e2111" class="topicref" data-id="id" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-ram.html" id="id-d3752e2111-link">内存配置</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d3752e2125" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d3752e2125-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-storage.html" id="id-d3752e2125-link">存储配置</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d3752e2233" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d3752e2233-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/advanced/partition_config_2.html" id="id-d3752e2233-link">配置分区</a></div></div></li><li role="treeitem"><div data-tocid="id-d3752e2277" class="topicref" data-id="id" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-console.html" id="id-d3752e2277-link">调试配置</a></div></div></li><li role="treeitem" aria-expanded="true"><div data-tocid="id-d3752e2291" class="topicref" data-id="id" data-state="expanded"><span role="button" tabindex="0" aria-labelledby="button-collapse-action id-d3752e2291-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-display.html" id="id-d3752e2291-link">屏幕配置</a></div></div><ul role="group" class="navbar-nav nav-list"><li role="treeitem"><div data-tocid="section_etw_v5b_bdc-d3752e2305" class="topicref" data-id="section_etw_v5b_bdc" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-display_rgb.html" id="section_etw_v5b_bdc-d3752e2305-link">RGB</a></div></div></li><li role="treeitem"><div data-tocid="section_nch_w5b_bdc-d3752e2319" class="topicref" data-id="section_nch_w5b_bdc" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-display_lvds.html" id="section_nch_w5b_bdc-d3752e2319-link">LVDS</a></div></div></li><li role="treeitem"><div data-tocid="section_f4q_w5b_bdc-d3752e2333" class="topicref" data-id="section_f4q_w5b_bdc" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-display_mipi.html" id="section_f4q_w5b_bdc-d3752e2333-link">MIPI</a></div></div></li><li role="treeitem"><div data-tocid="section_t5h_xxn_42c-d3752e2347" class="topicref" data-id="section_t5h_xxn_42c" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-display_mipi-dbi.html" id="section_t5h_xxn_42c-d3752e2347-link">MIPI-DBI</a></div></div></li><li role="treeitem"><div data-tocid="section_ib4_x5b_bdc-d3752e2361" class="topicref" data-id="section_ib4_x5b_bdc" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-display_%E8%83%8C%E5%85%89%E9%85%8D%E7%BD%AE.html" id="section_ib4_x5b_bdc-d3752e2361-link">背光配置</a></div></div></li><li role="treeitem"><div data-tocid="section_rqc_hg4_42c-d3752e2375" class="topicref" data-id="section_rqc_hg4_42c" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-display_%E5%90%AF%E5%8A%A8_log.html" id="section_rqc_hg4_42c-d3752e2375-link">启动 log</a></div></div></li><li role="treeitem" class="active"><div data-tocid="concept_smb_cl3_pzb-d3752e2389" class="topicref" data-id="concept_smb_cl3_pzb" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/display/display_faq_screen.html" id="concept_smb_cl3_pzb-d3752e2389-link">调屏常见问题</a></div></div></li></ul></li><li role="treeitem"><div data-tocid="id-d3752e2403" class="topicref" data-id="id" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/bringup/lite-bringup-samples.html" id="id-d3752e2403-link">示例程序</a></div></div></li></ul></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d3752e2418" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d3752e2418-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/chapter-advanced-app.html" id="id-d3752e2418-link">高级应用</a><div class="wh-tooltip"><p class="shortdesc">系统、存储、多媒体、接口、安全等模块的详细配置和设计说明。</p></div></div></div></li></ul></div>
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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" href="http://aicdocco/taskstopics/sdk/display/display_faq_screen.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">调屏常见问题</h1>
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<div class="date inPage">16 May 2025</div><div style="color: gray;">
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Read time: 2 minute(s)
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<section class="- topic/section section" id="concept_smb_cl3_pzb__section_dch_llg_d1c" data-ofbid="concept_smb_cl3_pzb__section_dch_llg_d1c"><h2 class="- topic/title title sectiontitle">PRGB 接口屏</h2>
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<div class="- topic/p p" data-ofbid="d190764e38__20250519091526">
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<ul class="- topic/ul ul" id="concept_smb_cl3_pzb__ul_bqh_mlg_d1c" data-ofbid="concept_smb_cl3_pzb__ul_bqh_mlg_d1c">
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<li class="- topic/li li" data-ofbid="d190764e42__20250519091526"><strong class="+ topic/ph hi-d/b ph b">现象一：黑屏</strong><ol class="- topic/ol ol" id="concept_smb_cl3_pzb__ol_qc4_rkg_d1c" data-ofbid="concept_smb_cl3_pzb__ol_qc4_rkg_d1c">
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<li class="- topic/li li" data-ofbid="d190764e47__20250519091526">检查背光是否已亮</li>
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<li class="- topic/li li" data-ofbid="d190764e50__20250519091526">排除 1 后确定屏规格书是 SYNC 模式还是 DE 模式，检查硬件电路相关控制信号是否按照屏规格书要求完成上下拉</li>
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<li class="- topic/li li" data-ofbid="d190764e53__20250519091526">排除 1、2 后，测量 pixelclk 是否符合屏规格要求，pixelclk 计算公式如下：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="concept_smb_cl3_pzb__codeblock_z2s_zc4_f1c" data-ofbid="concept_smb_cl3_pzb__codeblock_z2s_zc4_f1c">pixelclk = (hactive + hback-porch + hfront-porch + hsync-len)
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* (vactive + vback-porch + vfront-porch + vsync-len) * 帧率
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时钟频率 = 有效+消隐的总时间 * 帧率</pre></li>
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||
<li class="- topic/li li" data-ofbid="d190764e59__20250519091526"><strong class="+ topic/ph hi-d/b ph b">现象二:花屏</strong><ol class="- topic/ol ol" id="concept_smb_cl3_pzb__ol_tc4_rkg_d1c" data-ofbid="concept_smb_cl3_pzb__ol_tc4_rkg_d1c">
|
||
<li class="- topic/li li" data-ofbid="d190764e64__20250519091526">调整 pixelclk 频率</li>
|
||
<li class="- topic/li li" data-ofbid="d190764e67__20250519091526">调整 pixelclk 相位</li>
|
||
<li class="- topic/li li" data-ofbid="d190764e70__20250519091526">调整消隐区参数，主要是行方向消隐区</li>
|
||
</ol><div class="- topic/note note note note_note" id="concept_smb_cl3_pzb__note_srj_4lg_d1c" data-ofbid="concept_smb_cl3_pzb__note_srj_4lg_d1c"><span class="note__title">注：</span>
|
||
<p class="- topic/p p" data-ofbid="d190764e75__20250519091526">如果图像显示存在斑点，在颜色渐变区域尤为明显，优先调整 pixelclk 时钟输出相位，RGB 接口支持 0, 90, 180, 270
|
||
四个相位。</p>
|
||
</div><div class="- topic/p p" data-ofbid="d190764e78__20250519091526">pixelclk 时钟相位对应 <span class="+ topic/ph sw-d/filepath ph filepath">board.dts</span>
|
||
参数<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="concept_smb_cl3_pzb__codeblock_o4p_4lg_d1c" data-ofbid="concept_smb_cl3_pzb__codeblock_o4p_4lg_d1c">panel_rgb {
|
||
...
|
||
clock-phase = <DEGREE_<span class="hl-number">0</span>>;
|
||
...
|
||
}</pre></div></li>
|
||
<li class="- topic/li li" data-ofbid="d190764e86__20250519091526"><strong class="+ topic/ph hi-d/b ph b">现象三:起始位置错误</strong><ol class="- topic/ol ol" id="concept_smb_cl3_pzb__ol_xc4_rkg_d1c" data-ofbid="concept_smb_cl3_pzb__ol_xc4_rkg_d1c">
|
||
<li class="- topic/li li" data-ofbid="d190764e91__20250519091526">调整 pixelclk 频率</li>
|
||
<li class="- topic/li li" data-ofbid="d190764e94__20250519091526">调整 pixelclk 相位</li>
|
||
<li class="- topic/li li" data-ofbid="d190764e97__20250519091526">调整消隐区参数，主要是行方向消隐区</li>
|
||
</ol></li>
|
||
<li class="- topic/li li" data-ofbid="d190764e101__20250519091526"><strong class="+ topic/ph hi-d/b ph b">现象四:闪烁</strong><ul class="- topic/ul ul" id="concept_smb_cl3_pzb__ol_yc4_rkg_d1c" data-ofbid="concept_smb_cl3_pzb__ol_yc4_rkg_d1c">
|
||
<li class="- topic/li li" data-ofbid="d190764e106__20250519091526">增大 pixelclk 频率，提高帧率</li>
|
||
</ul></li>
|
||
</ul>
|
||
</div>
|
||
</section>
|
||
<section class="- topic/section section" id="concept_smb_cl3_pzb__section_sc4_rkg_d1c" data-ofbid="concept_smb_cl3_pzb__section_sc4_rkg_d1c"><h2 class="- topic/title title sectiontitle">LVDS 接口屏</h2>
|
||
|
||
<ul class="- topic/ul ul" id="concept_smb_cl3_pzb__ul_ks3_tlg_d1c" data-ofbid="concept_smb_cl3_pzb__ul_ks3_tlg_d1c">
|
||
<li class="- topic/li li" data-ofbid="d190764e120__20250519091526">现象一：黑屏<ol class="- topic/ol ol" id="concept_smb_cl3_pzb__ol_zc4_rkg_d1c" data-ofbid="concept_smb_cl3_pzb__ol_zc4_rkg_d1c">
|
||
<li class="- topic/li li" data-ofbid="d190764e124__20250519091526">检查背光是否已亮</li>
|
||
<li class="- topic/li li" data-ofbid="d190764e127__20250519091526">排除 1 后，检查 LVDS 通道是否连接正确，检查硬件电路相关控制信号是否按照屏规格书要求完成上下拉，检查屏规格书是 VESA 模式还是 JEIDA 模式</li>
|
||
<li class="- topic/li li" data-ofbid="d190764e130__20250519091526">排除 1、2 后，测量 pixelclk 是否符合屏规格要求，pixelclk 计算公式 vactive*hactive*60/(0.8)，其中系数 60 为帧率，系数 0.8 为消隐区系数;LVDS 接口中有一对时钟差分信号 CK，若为单通道，则实测 pixelclk=7ck;若为双通道，则实测 pixelclk=3.5ck;</li>
|
||
</ol></li>
|
||
<li class="- topic/li li" data-ofbid="d190764e134__20250519091526"><strong class="+ topic/ph hi-d/b ph b">现象二:花屏</strong><ol class="- topic/ol ol" id="concept_smb_cl3_pzb__ol_ad4_rkg_d1c" data-ofbid="concept_smb_cl3_pzb__ol_ad4_rkg_d1c">
|
||
<li class="- topic/li li" data-ofbid="d190764e139__20250519091526">调整 pixelclk 频率</li>
|
||
<li class="- topic/li li" data-ofbid="d190764e142__20250519091526">调整消隐区参数，主要是行方向消隐区</li>
|
||
</ol></li>
|
||
<li class="- topic/li li" data-ofbid="d190764e146__20250519091526"><strong class="+ topic/ph hi-d/b ph b">现象三:起始位置错误</strong><ol class="- topic/ol ol" id="concept_smb_cl3_pzb__ol_bd4_rkg_d1c" data-ofbid="concept_smb_cl3_pzb__ol_bd4_rkg_d1c">
|
||
<li class="- topic/li li" data-ofbid="d190764e151__20250519091526">调整 pixelclk 频率</li>
|
||
<li class="- topic/li li" data-ofbid="d190764e154__20250519091526">调整消隐区参数，主要是行方向消隐区</li>
|
||
</ol></li>
|
||
<li class="- topic/li li" data-ofbid="d190764e158__20250519091526"><strong class="+ topic/ph hi-d/b ph b">现象四:闪烁</strong><ul class="- topic/ul ul" id="concept_smb_cl3_pzb__ol_cd4_rkg_d1c" data-ofbid="concept_smb_cl3_pzb__ol_cd4_rkg_d1c">
|
||
<li class="- topic/li li" data-ofbid="d190764e163__20250519091526">增大 pixelclk 频率，提高帧率</li>
|
||
</ul></li>
|
||
</ul>
|
||
</section>
|
||
<section class="- topic/section section" id="concept_smb_cl3_pzb__section_kf1_wlg_d1c" data-ofbid="concept_smb_cl3_pzb__section_kf1_wlg_d1c"><h2 class="- topic/title title sectiontitle">DSI 接口屏</h2>
|
||
|
||
<div class="- topic/p p" data-ofbid="d190764e174__20250519091526">
|
||
<ul class="- topic/ul ul" id="concept_smb_cl3_pzb__ul_ssv_wlg_d1c" data-ofbid="concept_smb_cl3_pzb__ul_ssv_wlg_d1c">
|
||
<li class="- topic/li li" data-ofbid="d190764e178__20250519091526"><strong class="+ topic/ph hi-d/b ph b">现象一：黑屏</strong><ol class="- topic/ol ol" id="concept_smb_cl3_pzb__ol_dd4_rkg_d1c" data-ofbid="concept_smb_cl3_pzb__ol_dd4_rkg_d1c">
|
||
<li class="- topic/li li" data-ofbid="d190764e183__20250519091526">检查背光是否已亮</li>
|
||
<li class="- topic/li li" data-ofbid="d190764e186__20250519091526">排除 1 后，检查硬件电路相关控制信号是否按照屏规格书要求完成上下拉。检查与屏的连接是否成功，通常使用读屏驱动 ID 检查。检查初始化流程是否正确，检查屏规格书是 Commad 模式还是 Video 模式</li>
|
||
<li class="- topic/li li" data-ofbid="d190764e189__20250519091526">排除 1、2 后，测量 pixelclk 是否符合屏规格要求，pixelclk 计算公式 vactive*hactive*60/(0.8)，其中系数 60 为帧率，系数 0.8 为消隐区系数</li>
|
||
</ol></li>
|
||
<li class="- topic/li li" data-ofbid="d190764e193__20250519091526"><strong class="+ topic/ph hi-d/b ph b">现象二:花屏</strong><ol class="- topic/ol ol" id="concept_smb_cl3_pzb__ol_ed4_rkg_d1c" data-ofbid="concept_smb_cl3_pzb__ol_ed4_rkg_d1c">
|
||
<li class="- topic/li li" data-ofbid="d190764e198__20250519091526">检查屏数据格式，检查数据 lane 数量</li>
|
||
<li class="- topic/li li" data-ofbid="d190764e201__20250519091526">调整 pixelclk 频率</li>
|
||
<li class="- topic/li li" data-ofbid="d190764e204__20250519091526">调整消隐区参数，主要是行方向消隐区</li>
|
||
</ol></li>
|
||
<li class="- topic/li li" data-ofbid="d190764e208__20250519091526"><strong class="+ topic/ph hi-d/b ph b">现象三:起始位置错误</strong><ol class="- topic/ol ol" id="concept_smb_cl3_pzb__ol_fd4_rkg_d1c" data-ofbid="concept_smb_cl3_pzb__ol_fd4_rkg_d1c">
|
||
<li class="- topic/li li" data-ofbid="d190764e213__20250519091526">调整 pixelclk 频率</li>
|
||
<li class="- topic/li li" data-ofbid="d190764e216__20250519091526">调整消隐区参数，主要是行方向消隐区</li>
|
||
</ol></li>
|
||
<li class="- topic/li li" data-ofbid="d190764e220__20250519091526"><strong class="+ topic/ph hi-d/b ph b">现象四:闪烁</strong><ul class="- topic/ul ul" id="concept_smb_cl3_pzb__ol_gd4_rkg_d1c" data-ofbid="concept_smb_cl3_pzb__ol_gd4_rkg_d1c">
|
||
<li class="- topic/li li" data-ofbid="d190764e225__20250519091526">增大 pixelclk 频率，提高帧率</li>
|
||
</ul></li>
|
||
</ul>
|
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</div>
|
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</section>
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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="#concept_smb_cl3_pzb__section_dch_llg_d1c" data-tocid="concept_smb_cl3_pzb__section_dch_llg_d1c">PRGB 接口屏</a></div></li><li class="section-item"><div class="section-title"><a href="#concept_smb_cl3_pzb__section_sc4_rkg_d1c" data-tocid="concept_smb_cl3_pzb__section_sc4_rkg_d1c">LVDS 接口屏</a></div></li><li class="section-item"><div class="section-title"><a href="#concept_smb_cl3_pzb__section_kf1_wlg_d1c" data-tocid="concept_smb_cl3_pzb__section_kf1_wlg_d1c">DSI 接口屏</a></div></li></ul></div>
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