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    <title>i.MX Processorsのトピック[imx8mp] reduce u-boot booting time</title>
    <link>https://community.nxp.com/t5/i-MX-Processors/imx8mp-reduce-u-boot-booting-time/m-p/1438629#M188944</link>
    <description>&lt;P&gt;When I check "iMX_Boot_Times.pdf" booting time of imx8mq was 10.6s until "login prompt"&lt;/P&gt;&lt;P&gt;But my imx8mp takes 16.6s&lt;/P&gt;&lt;P&gt;&lt;span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ESK_2-1649131175254.png" style="width: 665px;"&gt;&lt;img src="https://community.nxp.com/t5/image/serverpage/image-id/175850i460D907051529ACF/image-dimensions/665x123?v=v2" width="665" height="123" role="button" title="ESK_2-1649131175254.png" alt="ESK_2-1649131175254.png" /&gt;&lt;span class="lia-inline-image-caption" onclick="event.preventDefault();"&gt;ESK_2-1649131175254.png&lt;/span&gt;&lt;/span&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;So, I try to reduce "U-boot : Starting kernel" time as a first step.&lt;/P&gt;&lt;P&gt;But, It task 2.8s. What can I do for 1.896s(imx8mq, iMX_Boot_Times.pdf)&lt;/P&gt;&lt;P&gt;&lt;span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ESK_1-1649131073231.png" style="width: 651px;"&gt;&lt;img src="https://community.nxp.com/t5/image/serverpage/image-id/175849iB2BD4D6F9202B00C/image-dimensions/651x148?v=v2" width="651" height="148" role="button" title="ESK_1-1649131073231.png" alt="ESK_1-1649131073231.png" /&gt;&lt;span class="lia-inline-image-caption" onclick="event.preventDefault();"&gt;ESK_1-1649131073231.png&lt;/span&gt;&lt;/span&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp; &amp;nbsp; 1) When I try below all, it can't boot up to kernel.&lt;BR /&gt;&amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp;&amp;nbsp;&lt;span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ESK_3-1649131377177.png" style="width: 400px;"&gt;&lt;img src="https://community.nxp.com/t5/image/serverpage/image-id/175851i3838D3D0724AACFE/image-size/medium?v=v2&amp;amp;px=400" role="button" title="ESK_3-1649131377177.png" alt="ESK_3-1649131377177.png" /&gt;&lt;span class="lia-inline-image-caption" onclick="event.preventDefault();"&gt;ESK_3-1649131377177.png&lt;/span&gt;&lt;/span&gt;&lt;BR /&gt;&amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp;&amp;nbsp;&lt;span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ESK_4-1649131418014.png" style="width: 400px;"&gt;&lt;img src="https://community.nxp.com/t5/image/serverpage/image-id/175852iB065088AB5C39CBB/image-size/medium?v=v2&amp;amp;px=400" role="button" title="ESK_4-1649131418014.png" alt="ESK_4-1649131418014.png" /&gt;&lt;span class="lia-inline-image-caption" onclick="event.preventDefault();"&gt;ESK_4-1649131418014.png&lt;/span&gt;&lt;/span&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp; &amp;nbsp; 2) When I modify "CONFIG_VIDEO_ADV7535=y" to "#&amp;nbsp;CONFIG_VIDEO_ADV7535 is not set" u-boot taks time 1.2s more, 4.048s.&lt;/P&gt;&lt;P&gt;&amp;nbsp; &amp;nbsp; 3) "u-boot : starting kernel" 2.849s log.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ESK_5-1649131888751.png" style="width: 999px;"&gt;&lt;img src="https://community.nxp.com/t5/image/serverpage/image-id/175853iB1A6FD468A05693F/image-size/large?v=v2&amp;amp;px=999" role="button" title="ESK_5-1649131888751.png" alt="ESK_5-1649131888751.png" /&gt;&lt;span class="lia-inline-image-caption" onclick="event.preventDefault();"&gt;ESK_5-1649131888751.png&lt;/span&gt;&lt;/span&gt;&lt;/P&gt;&lt;P&gt;&lt;span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ESK_0-1649132125982.png" style="width: 999px;"&gt;&lt;img src="https://community.nxp.com/t5/image/serverpage/image-id/175855iF4E0B47E725116C1/image-size/large?v=v2&amp;amp;px=999" role="button" title="ESK_0-1649132125982.png" alt="ESK_0-1649132125982.png" /&gt;&lt;span class="lia-inline-image-caption" onclick="event.preventDefault();"&gt;ESK_0-1649132125982.png&lt;/span&gt;&lt;/span&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;</description>
    <pubDate>Tue, 05 Apr 2022 04:15:43 GMT</pubDate>
    <dc:creator>ESK</dc:creator>
    <dc:date>2022-04-05T04:15:43Z</dc:date>
    <item>
      <title>[imx8mp] reduce u-boot booting time</title>
      <link>https://community.nxp.com/t5/i-MX-Processors/imx8mp-reduce-u-boot-booting-time/m-p/1438629#M188944</link>
      <description>&lt;P&gt;When I check "iMX_Boot_Times.pdf" booting time of imx8mq was 10.6s until "login prompt"&lt;/P&gt;&lt;P&gt;But my imx8mp takes 16.6s&lt;/P&gt;&lt;P&gt;&lt;span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ESK_2-1649131175254.png" style="width: 665px;"&gt;&lt;img src="https://community.nxp.com/t5/image/serverpage/image-id/175850i460D907051529ACF/image-dimensions/665x123?v=v2" width="665" height="123" role="button" title="ESK_2-1649131175254.png" alt="ESK_2-1649131175254.png" /&gt;&lt;span class="lia-inline-image-caption" onclick="event.preventDefault();"&gt;ESK_2-1649131175254.png&lt;/span&gt;&lt;/span&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;So, I try to reduce "U-boot : Starting kernel" time as a first step.&lt;/P&gt;&lt;P&gt;But, It task 2.8s. What can I do for 1.896s(imx8mq, iMX_Boot_Times.pdf)&lt;/P&gt;&lt;P&gt;&lt;span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ESK_1-1649131073231.png" style="width: 651px;"&gt;&lt;img src="https://community.nxp.com/t5/image/serverpage/image-id/175849iB2BD4D6F9202B00C/image-dimensions/651x148?v=v2" width="651" height="148" role="button" title="ESK_1-1649131073231.png" alt="ESK_1-1649131073231.png" /&gt;&lt;span class="lia-inline-image-caption" onclick="event.preventDefault();"&gt;ESK_1-1649131073231.png&lt;/span&gt;&lt;/span&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp; &amp;nbsp; 1) When I try below all, it can't boot up to kernel.&lt;BR /&gt;&amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp;&amp;nbsp;&lt;span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ESK_3-1649131377177.png" style="width: 400px;"&gt;&lt;img src="https://community.nxp.com/t5/image/serverpage/image-id/175851i3838D3D0724AACFE/image-size/medium?v=v2&amp;amp;px=400" role="button" title="ESK_3-1649131377177.png" alt="ESK_3-1649131377177.png" /&gt;&lt;span class="lia-inline-image-caption" onclick="event.preventDefault();"&gt;ESK_3-1649131377177.png&lt;/span&gt;&lt;/span&gt;&lt;BR /&gt;&amp;nbsp; &amp;nbsp; &amp;nbsp; &amp;nbsp;&amp;nbsp;&lt;span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ESK_4-1649131418014.png" style="width: 400px;"&gt;&lt;img src="https://community.nxp.com/t5/image/serverpage/image-id/175852iB065088AB5C39CBB/image-size/medium?v=v2&amp;amp;px=400" role="button" title="ESK_4-1649131418014.png" alt="ESK_4-1649131418014.png" /&gt;&lt;span class="lia-inline-image-caption" onclick="event.preventDefault();"&gt;ESK_4-1649131418014.png&lt;/span&gt;&lt;/span&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp; &amp;nbsp; 2) When I modify "CONFIG_VIDEO_ADV7535=y" to "#&amp;nbsp;CONFIG_VIDEO_ADV7535 is not set" u-boot taks time 1.2s more, 4.048s.&lt;/P&gt;&lt;P&gt;&amp;nbsp; &amp;nbsp; 3) "u-boot : starting kernel" 2.849s log.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ESK_5-1649131888751.png" style="width: 999px;"&gt;&lt;img src="https://community.nxp.com/t5/image/serverpage/image-id/175853iB1A6FD468A05693F/image-size/large?v=v2&amp;amp;px=999" role="button" title="ESK_5-1649131888751.png" alt="ESK_5-1649131888751.png" /&gt;&lt;span class="lia-inline-image-caption" onclick="event.preventDefault();"&gt;ESK_5-1649131888751.png&lt;/span&gt;&lt;/span&gt;&lt;/P&gt;&lt;P&gt;&lt;span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ESK_0-1649132125982.png" style="width: 999px;"&gt;&lt;img src="https://community.nxp.com/t5/image/serverpage/image-id/175855iF4E0B47E725116C1/image-size/large?v=v2&amp;amp;px=999" role="button" title="ESK_0-1649132125982.png" alt="ESK_0-1649132125982.png" /&gt;&lt;span class="lia-inline-image-caption" onclick="event.preventDefault();"&gt;ESK_0-1649132125982.png&lt;/span&gt;&lt;/span&gt;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;</description>
      <pubDate>Tue, 05 Apr 2022 04:15:43 GMT</pubDate>
      <guid>https://community.nxp.com/t5/i-MX-Processors/imx8mp-reduce-u-boot-booting-time/m-p/1438629#M188944</guid>
      <dc:creator>ESK</dc:creator>
      <dc:date>2022-04-05T04:15:43Z</dc:date>
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