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href="../../../topics/sdk/gstreamer/gstreamer-user-guide.html" id="gstreamer-d4445e5582-link">Gstreamer 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="i2s-d4445e5680" class="topicref" data-id="i2s" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action i2s-d4445e5680-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/i2s/i2s_user_guide.html" id="i2s-d4445e5680-link">I2S 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="audio_codec_user_guide-d4445e5806" class="topicref" data-id="audio_codec_user_guide" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action audio_codec_user_guide-d4445e5806-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/audio_codec/audio-codec-user-guide.html" id="audio_codec_user_guide-d4445e5806-link">Audio Codec 使用指南</a></div></div></li></ul></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_nww_hzh_pzb-d4445e5947" class="topicref" data-id="concept_nww_hzh_pzb" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_nww_hzh_pzb-d4445e5947-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-interface-sdk.html" id="concept_nww_hzh_pzb-d4445e5947-link">接口</a><div class="wh-tooltip"><p class="shortdesc">CAN、CIR、GPAI、GPIO、I2C、PSADC、PWM 等接口模块的介绍和使用说明。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="chapter-safety-d4445e7944" class="topicref" data-id="chapter-safety" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-safety-d4445e7944-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-safety-sdk.html" id="chapter-safety-d4445e7944-link">安全</a><div class="wh-tooltip"><p class="shortdesc">SPI ENC、CE、eFuse 等安全模块的介绍和使用说明。</p></div></div></div></li></ul></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" title="Edit this document" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/sdk/display/display_panel_port.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">屏适配指南</h1>
|
||
|
||
<div class="date inPage">15 Jan 2024</div><div style="color: gray;">
|
||
Read time: 4 minute(s)
|
||
</div>
|
||
<div class="- topic/body concept/conbody body conbody">
|
||
<p class="- topic/p p" data-ofbid="d139431e33__20250123155213">本章节介绍 LCD 外设在 <span class="- topic/ph ph">Luban</span> 上的适配方法。用户可选择以下任意方式配置屏参数：</p>
|
||
<div class="- topic/p p" data-ofbid="d139431e39__20250123155213">
|
||
<ul class="- topic/ul ul" id="display_screen_configuration__ul_zzy_l2g_d1c" data-ofbid="display_screen_configuration__ul_zzy_l2g_d1c">
|
||
<li class="- topic/li li" data-ofbid="d139431e43__20250123155213">将以下屏参数写入 panel 驱动源码中：<div class="- topic/note note note note_note" id="display_screen_configuration__note_yzz_q2g_d1c" data-ofbid="display_screen_configuration__note_yzz_q2g_d1c"><span class="note__title">注：</span> <div class="note__body">
|
||
<p class="- topic/p p" data-ofbid="d139431e47__20250123155213">对于屏时序参数，只有当 <span class="+ topic/ph sw-d/filepath ph filepath">board.dts</span> 文件的 panel 结点没有设置
|
||
display-timings 子节点时，此方式才会生效。</p>
|
||
</div></div><ul class="- topic/ul ul" id="display_screen_configuration__ul_jqw_f2g_d1c" data-ofbid="display_screen_configuration__ul_jqw_f2g_d1c">
|
||
<li class="- topic/li li" data-ofbid="d139431e55__20250123155213">时序参数<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="display_screen_configuration__codeblock_nhl_hfg_d1c" data-ofbid="display_screen_configuration__codeblock_nhl_hfg_d1c"><code><em class="hl-comment">/* Init the videomode parameter, dts will override the initial value. */</em>
|
||
<strong class="hl-keyword">static</strong> <strong class="hl-keyword">struct</strong> videomode panel_vm = {
|
||
.pixelclock = <span class="hl-number">130000000</span>,
|
||
.hactive = <span class="hl-number">1080</span>,
|
||
.hfront_porch = <span class="hl-number">160</span>,
|
||
.hback_porch = <span class="hl-number">160</span>,
|
||
.hsync_len = <span class="hl-number">40</span>,
|
||
.vactive = <span class="hl-number">1920</span>,
|
||
.vfront_porch = <span class="hl-number">10</span>,
|
||
.vback_porch = <span class="hl-number">20</span>,
|
||
.vsync_len = <span class="hl-number">8</span>,
|
||
.flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
|
||
DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE
|
||
};
|
||
</code></pre></li>
|
||
<li class="- topic/li li" data-ofbid="d139431e60__20250123155213">屏接口参数<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="display_screen_configuration__codeblock_hbp_hfg_d1c" data-ofbid="display_screen_configuration__codeblock_hbp_hfg_d1c"><code><strong class="hl-keyword">static</strong> <strong class="hl-keyword">int</strong> panel_bind(<strong class="hl-keyword">struct</strong> device *dev, <strong class="hl-keyword">struct</strong> device *master, <strong class="hl-keyword">void</strong> *data)
|
||
{
|
||
...
|
||
dsi->format = DSI_FMT_RGB888;
|
||
dsi->mode = DSI_MOD_VID_PULSE;
|
||
dsi->lane_num = <span class="hl-number">4</span>;
|
||
...
|
||
}</code></pre></li>
|
||
</ul></li>
|
||
</ul>
|
||
</div>
|
||
<section class="- topic/section section" id="display_screen_configuration__section_rjf_4gk_ndc" data-ofbid="display_screen_configuration__section_rjf_4gk_ndc"><h2 class="- topic/title title sectiontitle">屏配置方式</h2>
|
||
|
||
<div class="- topic/p p" data-ofbid="d139431e73__20250123155213">
|
||
<div class="- topic/div div" id="display_screen_configuration__div_qrj_xhs_2dc">
|
||
<p class="- topic/p p" data-ofbid="d139431e77__20250123155213">方式一：将屏参数写入到 <span class="+ topic/ph sw-d/filepath ph filepath">board.dts</span> 文件中。关于 <span class="+ topic/keyword pr-d/parmname keyword parmname">panel_lvds</span>
|
||
参数，可查看 <a class="- topic/xref xref" href="display_parameter_panel_lvds.html">Panel_LVDS</a>。</p>
|
||
</div>
|
||
<div class="- topic/div div" id="display_screen_configuration__div_qmp_xhs_2dc">
|
||
<p class="- topic/p p" data-ofbid="d139431e93__20250123155213">方式二：将屏参数写入 panel 驱动源码中。</p>
|
||
<div class="- topic/note note tip note_tip" id="display_screen_configuration__note_xf4_qn3_ddc" data-ofbid="display_screen_configuration__note_xf4_qn3_ddc"><span class="note__title">提示：</span> <div class="note__body">
|
||
<p class="- topic/p p" data-ofbid="d139431e98__20250123155213">仅在 <span class="+ topic/ph sw-d/filepath ph filepath">board.dts</span> 文件的 panel 结点不存在
|
||
<span class="+ topic/keyword pr-d/parmname keyword parmname">display-timings</span> 子节点，方式二才会生效。</p>
|
||
</div></div>
|
||
<ul class="- topic/ul ul simple" id="display_screen_configuration__ul_s1f_4gs_2dc" data-ofbid="display_screen_configuration__ul_s1f_4gs_2dc">
|
||
<li class="- topic/li li" data-ofbid="d139431e110__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d139431e112__20250123155213">时序参数</p>
|
||
<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="display_screen_configuration__codeblock_gcb_rgs_2dc" data-ofbid="display_screen_configuration__codeblock_gcb_rgs_2dc"><code><em class="hl-comment">/* Init the videomode parameter, dts will override the initial value. */</em>
|
||
<strong class="hl-keyword">static</strong> <strong class="hl-keyword">struct</strong> videomode panel_vm = {
|
||
.pixelclock = <span class="hl-number">130000000</span>,
|
||
.hactive = <span class="hl-number">1080</span>,
|
||
.hfront_porch = <span class="hl-number">160</span>,
|
||
.hback_porch = <span class="hl-number">160</span>,
|
||
.hsync_len = <span class="hl-number">40</span>,
|
||
.vactive = <span class="hl-number">1920</span>,
|
||
.vfront_porch = <span class="hl-number">10</span>,
|
||
.vback_porch = <span class="hl-number">20</span>,
|
||
.vsync_len = <span class="hl-number">8</span>,
|
||
.flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
|
||
DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE
|
||
};</code></pre>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d139431e119__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d139431e121__20250123155213">屏接口参数</p>
|
||
<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="display_screen_configuration__codeblock_o1k_rgs_2dc" data-ofbid="display_screen_configuration__codeblock_o1k_rgs_2dc"><code><strong class="hl-keyword">struct</strong> panel_dsi dsi = {
|
||
.mode = DSI_MOD_VID_BURST,
|
||
.format = DSI_FMT_RGB888,
|
||
.lane_num = <span class="hl-number">4</span>,
|
||
};</code></pre>
|
||
</li>
|
||
</ul>
|
||
</div>
|
||
</div>
|
||
</section>
|
||
<section class="- topic/section section" id="display_screen_configuration__section_iqw_f2g_d1c" data-ofbid="display_screen_configuration__section_iqw_f2g_d1c"><h2 class="- topic/title title sectiontitle">屏配置步骤</h2>
|
||
|
||
<p class="- topic/p p" data-ofbid="d139431e137__20250123155213">屏配置需要以下操作：</p>
|
||
<ol class="- topic/ol ol" id="display_screen_configuration__ol_oqw_f2g_d1c" data-ofbid="display_screen_configuration__ol_oqw_f2g_d1c">
|
||
<li class="- topic/li li" data-ofbid="d139431e142__20250123155213">为 LCD 适配一款 panel 驱动。</li>
|
||
<li class="- topic/li li" data-ofbid="d139431e145__20250123155213">确保一条正确的数据通路。</li>
|
||
</ol>
|
||
<div class="- topic/p p" data-ofbid="d139431e149__20250123155213">具体配置步骤如下：<ol class="- topic/ol ol" id="display_screen_configuration__ol_mwz_v2g_d1c" data-ofbid="display_screen_configuration__ol_mwz_v2g_d1c">
|
||
<li class="- topic/li li" data-ofbid="d139431e153__20250123155213">配置 panel 驱动：<ul class="- topic/ul ul" id="display_screen_configuration__ul_osf_csj_ndc" data-ofbid="display_screen_configuration__ul_osf_csj_ndc">
|
||
<li class="- topic/li li" data-ofbid="d139431e157__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d139431e159__20250123155213">使能 Luban SDK 提供的 RGB/ LVDS panel 驱动，详见 <a class="- topic/xref xref" href="display_menuconfig.html#display_menuconfig_configuration__li_enable_panel_drivers">Panel
|
||
配置</a>。</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d139431e167__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d139431e169__20250123155213">编写一个 panel 驱动，详情可查看<a xml:lang="zh-CN" lang="zh-CN" class="- topic/xref xref" href="display_driver-intro.html">屏驱动支持</a>。</p>
|
||
</li>
|
||
</ul></li>
|
||
<li class="- topic/li li" data-ofbid="d139431e178__20250123155213">数据通路<div class="- topic/p p" data-ofbid="d139431e180__20250123155213">LCD
|
||
正常显示时，显示模块会形成一条完整的数据通道。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="display_screen_configuration__codeblock_ahl_hsh_mbc" data-ofbid="display_screen_configuration__codeblock_ahl_hsh_mbc"><code>fb0 --> display engine --> display interface --> panel</code></pre></div><div class="- topic/p p" data-ofbid="d139431e184__20250123155213">数据通道的关系在
|
||
<span class="+ topic/ph sw-d/filepath ph filepath">board.dts</span> 中体现，以 LVDS
|
||
屏幕为例：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="display_screen_configuration__codeblock_y3n_lfg_d1c" data-ofbid="display_screen_configuration__codeblock_y3n_lfg_d1c"><code>&fb0 {
|
||
port {
|
||
fb0_out: endpoint {
|
||
remote-endpoint = <&de0_in>;
|
||
};
|
||
};
|
||
};
|
||
|
||
&de0 {
|
||
status = <span class="hl-string">"okay"</span>;
|
||
port@<span class="hl-number">0</span> {
|
||
reg = <<span class="hl-number">0</span>>;
|
||
de0_in: endpoint {
|
||
remote-endpoint = <&fb0_out>;
|
||
};
|
||
};
|
||
|
||
port@<span class="hl-number">1</span> {
|
||
reg = <<span class="hl-number">1</span>>;
|
||
de0_out: endpoint {
|
||
remote-endpoint = <&lvds0_in>;
|
||
};
|
||
};
|
||
};
|
||
|
||
&rgb0 {
|
||
status = <span class="hl-string">"disabled"</span>;
|
||
port@<span class="hl-number">0</span> {
|
||
reg = <<span class="hl-number">0</span>>;
|
||
rgb0_in: endpoint {
|
||
remote-endpoint = <&rgb0_in>;
|
||
};
|
||
};
|
||
|
||
port@<span class="hl-number">1</span> {
|
||
reg = <<span class="hl-number">1</span>>;
|
||
rgb0_out: endpoint {
|
||
remote-endpoint = <&panel_rgb_in>;
|
||
};
|
||
};
|
||
};
|
||
|
||
&lvds0 {
|
||
status = <span class="hl-string">"okay"</span>;
|
||
port@<span class="hl-number">0</span> {
|
||
reg = <<span class="hl-number">0</span>>;
|
||
lvds0_in: endpoint {
|
||
remote-endpoint = <&de0_out>;
|
||
};
|
||
};
|
||
|
||
port@<span class="hl-number">1</span> {
|
||
reg = <<span class="hl-number">1</span>>;
|
||
lvds0_out: endpoint {
|
||
remote-endpoint = <&panel_lvds_in>;
|
||
};
|
||
};
|
||
};
|
||
|
||
&dsi0 {
|
||
status = <span class="hl-string">"disabled"</span>;
|
||
port@<span class="hl-number">0</span> {
|
||
reg = <<span class="hl-number">0</span>>;
|
||
dsi0_in: endpoint {
|
||
remote-endpoint = <&dsi0_in>;
|
||
};
|
||
};
|
||
|
||
port@<span class="hl-number">1</span> {
|
||
reg = <<span class="hl-number">1</span>>;
|
||
dsi0_out: endpoint {
|
||
remote-endpoint = <&panel_dsi_in>;
|
||
};
|
||
};
|
||
};</code></pre></div><div class="- topic/p p" data-ofbid="d139431e191__20250123155213">在上述例子中，<span class="+ topic/ph sw-d/filepath ph filepath">board.dts</span> 通过 port 和
|
||
status
|
||
结点，配置了一条数据通道。<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="display_screen_configuration__codeblock_hmw_lsh_mbc" data-ofbid="display_screen_configuration__codeblock_hmw_lsh_mbc"><code>fb | de | | lvds | panel
|
||
port --> port0 port1 --> port0 port1 --> port</code></pre></div><p class="- topic/p p" data-ofbid="d139431e198__20250123155213">如果
|
||
<span class="+ topic/ph sw-d/filepath ph filepath">board.dts</span> 中没有正确配置一条数据通道，显示驱动无法完成初始化。</p></li>
|
||
</ol></div>
|
||
</section>
|
||
</div>
|
||
</article></main></div>
|
||
|
||
<div class=" wh_child_links d-print-none "><nav aria-label="Child Links" role="navigation" class="- topic/related-links related-links"><ul class="ullinks"><li class="- topic/link link ulchildlink"><strong><a href="../../../topics/sdk/display/display_driver-intro.html">屏驱动支持</a></strong></li></ul></nav></div>
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</div>
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<nav role="navigation" id="wh_topic_toc" aria-label="On this page" class="col-lg-2 d-none d-lg-block navbar d-print-none">
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<div id="wh_topic_toc_content">
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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="#display_screen_configuration__section_rjf_4gk_ndc" data-tocid="display_screen_configuration__section_rjf_4gk_ndc">屏配置方式</a></div></li><li class="section-item"><div class="section-title"><a href="#display_screen_configuration__section_iqw_f2g_d1c" data-tocid="display_screen_configuration__section_iqw_f2g_d1c">屏配置步骤</a></div></li></ul></div>
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|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
</div>
|
||
<footer class="navbar navbar-default wh_footer">
|
||
<div class=" footer-container mx-auto ">
|
||
<title>footer def</title>
|
||
<style><!--
|
||
|
||
.p1 {
|
||
font-family: FangZhengShuSong, Times, serif;
|
||
}
|
||
.p2 {
|
||
font-family: Arial, Helvetica, sans-serif;
|
||
}
|
||
.p3 {
|
||
font-family: "Lucida Console", "Courier New", monospace;
|
||
}
|
||
|
||
--></style>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<div class="webhelp.fragment.footer">
|
||
<p class="p1">Copyright © 2019-2024 广东匠芯创科技有限公司. All rights reserved.</p>
|
||
</div><div>
|
||
<div class="generation_time">
|
||
Update Time: 2025-01-23
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</footer>
|
||
|
||
<button id="go2top" class="d-print-none" title="返回顶部">
|
||
<span class="oxy-icon oxy-icon-up"></span>
|
||
</button>
|
||
|
||
<div id="modal_img_large" class="modal">
|
||
<span class="close oxy-icon oxy-icon-remove"></span>
|
||
<div id="modal_img_container"></div>
|
||
<div id="caption"></div>
|
||
</div>
|
||
|
||
|
||
<script src="${pd}/publishing/publishing-styles-AIC-template/js/custom.js" defer="defer"></script>
|
||
|
||
|
||
</body>
|
||
</html> |