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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/bringup/bringup-lvds-display-config.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">LVDS</h1><div class="date inPage">4 Dec 2024</div><div style="color: gray;">
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Read time: 3 minute(s)
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</div><div class="- topic/body concept/conbody body conbody"><p class="- topic/p p" data-ofbid="d145322e24__20250121171610">LVDS 屏的调试和 RGB 类似，只需要把规格书中所描述的时序和规格参数加入相应的配置文件即可，也不需要额外的驱动程序。</p><section class="- topic/section section" id="bringup_lvdsDisplayConfig__section_dly_v1c_d1c" data-ofbid="bringup_lvdsDisplayConfig__section_dly_v1c_d1c"><h2 class="- topic/title title sectiontitle">uboot 配置</h2>
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<p class="- topic/p p" data-ofbid="d145322e31__20250121171610">在 Luban 根目录下执行 <span class="+ topic/keyword sw-d/cmdname keyword cmdname">make um</span>，进入 uboot 的功能配置界面，使能显示模块驱动：</p>
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<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="bringup_lvdsDisplayConfig__codeblock_ely_v1c_d1c" data-ofbid="bringup_lvdsDisplayConfig__codeblock_ely_v1c_d1c">Device Drivers
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Graphics support
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ArtInChip Graphics --->
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[*] Enable ArtInChip Video Support
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[ ] ArtInChip display rgb support
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[*] ArtInChip display lvds support
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[ ] ArtInChip display mipi-dsi support
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<*> ArtInChip Panel Drivers (ArtInChip general LVDS panel) --->
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</pre>
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</section><section class="- topic/section section" id="bringup_lvdsDisplayConfig__section_fly_v1c_d1c" data-ofbid="bringup_lvdsDisplayConfig__section_fly_v1c_d1c"><h2 class="- topic/title title sectiontitle">kernel 配置</h2>
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<p class="- topic/p p" data-ofbid="d145322e45__20250121171610">在 Luban 根目录下执行 <span class="+ topic/keyword sw-d/cmdname keyword cmdname">make km</span>，进入 kernel 的功能配置界面，使能显示模块驱动：</p>
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<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="bringup_lvdsDisplayConfig__codeblock_gly_v1c_d1c" data-ofbid="bringup_lvdsDisplayConfig__codeblock_gly_v1c_d1c">Device Drivers
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Graphics support
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ArtInChip Graphics --->
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<*> ArtInChip Framebuffer support
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[ ] ArtInChip display rgb support
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[*] ArtInChip display lvds support
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[ ] ArtInChip display mipi-dsi support
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<*> ArtInChip Panel Drivers (ArtInChip general LVDS panel) --->
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</pre>
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</section><section class="- topic/section section" id="bringup_lvdsDisplayConfig__section_hly_v1c_d1c" data-ofbid="bringup_lvdsDisplayConfig__section_hly_v1c_d1c"><h2 class="- topic/title title sectiontitle">uboot dts</h2><p class="- topic/p p" data-ofbid="d145322e57__20250121171610">uboot 如果要进行显示，则声明相应的配置为预加载，以
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demo128_nand 工程为例，文件为
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<span class="+ topic/ph sw-d/filepath ph filepath">target/d211/demo128_nand/board-u-boot.dtsi</span></p><strong class="+ topic/ph hi-d/b ph b">声明通路</strong><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="bringup_lvdsDisplayConfig__codeblock_qnw_hbc_d1c" data-ofbid="bringup_lvdsDisplayConfig__codeblock_qnw_hbc_d1c">&disp {
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u-boot,dm-pre-reloc;
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fb0: fb@<span class="hl-number">0</span> {
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u-boot,dm-pre-reloc;
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port {
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fb0_out: endpoint {
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u-boot,dm-pre-reloc;
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}
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};
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};
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};
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&de0 {
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u-boot,dm-pre-reloc;
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port@<span class="hl-number">0</span> {
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de0_in: endpoint {
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u-boot,dm-pre-reloc;
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};
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};
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port@<span class="hl-number">1</span> {
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de0_out: endpoint {
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u-boot,dm-pre-reloc;
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};
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};
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};
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&lvds0 { <em class="hl-comment">//lvds</em>
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u-boot,dm-pre-reloc;
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port@<span class="hl-number">0</span> {
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lvds0_in: endpoint {
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u-boot,dm-pre-reloc;
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};
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};
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port@<span class="hl-number">1</span> {
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lvds0_out: endpoint {
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u-boot,dm-pre-reloc;
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};
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};
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};</pre><strong class="+ topic/ph hi-d/b ph b">声明屏幕参数</strong><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="bringup_lvdsDisplayConfig__codeblock_v3b_jbc_d1c" data-ofbid="bringup_lvdsDisplayConfig__codeblock_v3b_jbc_d1c">panel_lvds {
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u-boot,dm-pre-reloc;
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port {
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panel_lvds_in: endpoint {
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u-boot,dm-pre-reloc;
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};
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};
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display-timings {
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u-boot,dm-pre-reloc;
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timing1: <span class="hl-number">1024</span>x600 {
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u-boot,dm-pre-reloc;
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};
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};
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};</pre><div class="- topic/p p" data-ofbid="d145322e69__20250121171610">
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<strong class="+ topic/ph hi-d/b ph b">声明屏幕引脚</strong><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="bringup_lvdsDisplayConfig__codeblock_imr_jbc_d1c" data-ofbid="bringup_lvdsDisplayConfig__codeblock_imr_jbc_d1c">lvds1_pins: lvds1-<span class="hl-number">0</span> {
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u-boot,dm-pre-reloc;
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pins {
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u-boot,dm-pre-reloc;
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};
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};</pre></div></section><section class="- topic/section section" id="bringup_lvdsDisplayConfig__section_lly_v1c_d1c" data-ofbid="bringup_lvdsDisplayConfig__section_lly_v1c_d1c"><h2 class="- topic/title title sectiontitle">系统 DTS 参数</h2>
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<div class="- topic/p p" data-ofbid="d145322e80__20250121171610">系统的 dts 将进行完整的功能配置，以 demo128_nand 工程为例，文件为
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<span class="+ topic/ph sw-d/filepath ph filepath">target/d211/demo128_nand/board.dts</span> 中<ol class="- topic/ol ol" id="bringup_lvdsDisplayConfig__ol_c4m_mbc_d1c" data-ofbid="bringup_lvdsDisplayConfig__ol_c4m_mbc_d1c"><li class="- topic/li li" data-ofbid="d145322e86__20250121171610">配置通路<div class="- topic/p p" data-ofbid="d145322e88__20250121171610">通过 port 和 status
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结点，定义一条数据通道：<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="bringup_lvdsDisplayConfig__codeblock_rwf_lbc_d1c" data-ofbid="bringup_lvdsDisplayConfig__codeblock_rwf_lbc_d1c">fb | de | | lvds | panel
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port --> port0 port1 --> port0 port1 --> port</pre></div></li><li class="- topic/li li" data-ofbid="d145322e92__20250121171610">配置屏幕参数<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="bringup_lvdsDisplayConfig__codeblock_gvr_nbc_d1c" data-ofbid="bringup_lvdsDisplayConfig__codeblock_gvr_nbc_d1c">panel_lvds {
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compatible = <span class="hl-string">"artinchip,aic-general-lvds-panel"</span>;
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data-mapping = <span class="hl-string">"vesa-24"</span>;
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data-channel = <span class="hl-string">"single-link1"</span>;
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status = <span class="hl-string">"okay"</span>;
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enable-gpios = <&gpio_c <span class="hl-number">7</span> GPIO_ACTIVE_HIGH>;
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port {
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panel_lvds_in: endpoint {
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remote-endpoint = <&lvds0_out>;
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};
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};
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display-timings {
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native-mode = <&timing1>;
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timing1: <span class="hl-number">1024</span>x600 {
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clock-frequency = <<span class="hl-number">52000000</span>>;
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hactive = <<span class="hl-number">1024</span>>;
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vactive = <<span class="hl-number">600</span>>;
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hback-porch = <<span class="hl-number">160</span>>;
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hfront-porch = <<span class="hl-number">160</span>>;
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hsync-len = <<span class="hl-number">20</span>>;
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vback-porch = <<span class="hl-number">20</span>>;
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vfront-porch = <<span class="hl-number">12</span>>;
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vsync-len = <<span class="hl-number">3</span>>;
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de-active = <<span class="hl-number">1</span>>;
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pixelclk-active = <<span class="hl-number">1</span>>;
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};
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};
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};</pre></li><li class="- topic/li li" data-ofbid="d145322e96__20250121171610">配置引脚<p class="- topic/p p" data-ofbid="d145322e98__20250121171610">引脚的配置统一在 <span class="+ topic/ph sw-d/filepath ph filepath">d211-pinctrl.dtsi</span> 中完成，在 rgb0
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节点中直接进行了引用</p><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="bringup_lvdsDisplayConfig__codeblock_y1j_pbc_d1c" data-ofbid="bringup_lvdsDisplayConfig__codeblock_y1j_pbc_d1c">&lvds0 {
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pinctrl-names = <span class="hl-string">"default"</span>;
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pinctrl-<span class="hl-number">0</span> = <&lvds1_pins>;
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status = <span class="hl-string">"okay"</span>;
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......
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}</pre></li></ol></div>
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</section></div></article></main></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="#bringup_lvdsDisplayConfig__section_dly_v1c_d1c" data-tocid="bringup_lvdsDisplayConfig__section_dly_v1c_d1c">uboot 配置</a></div></li><li class="section-item"><div class="section-title"><a href="#bringup_lvdsDisplayConfig__section_fly_v1c_d1c" data-tocid="bringup_lvdsDisplayConfig__section_fly_v1c_d1c">kernel 配置</a></div></li><li class="section-item"><div class="section-title"><a href="#bringup_lvdsDisplayConfig__section_hly_v1c_d1c" data-tocid="bringup_lvdsDisplayConfig__section_hly_v1c_d1c">uboot dts</a></div></li><li class="section-item"><div class="section-title"><a href="#bringup_lvdsDisplayConfig__section_lly_v1c_d1c" data-tocid="bringup_lvdsDisplayConfig__section_lly_v1c_d1c">系统 DTS 参数</a></div></li></ul></div>
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</div>
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</nav>
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</div>
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</div>
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</div>
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<footer class="navbar navbar-default wh_footer">
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<div class=" footer-container mx-auto ">
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<title>footer def</title>
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<style><!--
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.p1 {
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font-family: FangZhengShuSong, Times, serif;
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}
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.p2 {
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font-family: Arial, Helvetica, sans-serif;
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}
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.p3 {
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font-family: "Lucida Console", "Courier New", monospace;
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}
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--></style>
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<div class="webhelp.fragment.footer">
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<p class="p1">Copyright © 2019-2024 广东匠芯创科技有限公司. All rights reserved.</p>
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</div><div>
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<div class="generation_time">
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Update Time: 2025-01-21
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</div>
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</div>
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</div>
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</footer>
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<div id="go2top" class="d-print-none">
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<span class="oxy-icon oxy-icon-up"></span>
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</div>
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<div id="modal_img_large" class="modal">
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<span class="close oxy-icon oxy-icon-remove"></span>
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<div id="modal_img_container"></div>
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<div id="caption"></div>
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</div>
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<script src="${pd}/publishing/publishing-styles-AIC-template/js/custom.js" defer="defer"></script>
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</body>
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</html>
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