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        <title>UP Squared i12 Linux — upcommunity</title>
        <link>https://forum.up-community.org/</link>
        <pubDate>Thu, 10 Sep 2026 23:11:20 +0000</pubDate>
        <language>en</language>
            <description>UP Squared i12 Linux — upcommunity</description>
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    <item>
        <title>Moving Onboard OS to mSATA III</title>
        <link>https://forum.up-community.org/discussion/5296/moving-onboard-os-to-msata-iii</link>
        <pubDate>Tue, 24 Oct 2023 07:07:17 +0000</pubDate>
        <category>UP Squared i12 Linux</category>
        <dc:creator>MarkyMark</dc:creator>
        <guid isPermaLink="false">5296@/discussions</guid>
        <description><![CDATA[<p>Hi,</p>

<p>I've just bought mSATA 256GB SATA III so that I can move the onboard OS on my Up Squared and get more space.</p>

<p>Simple question is how can I go about doing this?</p>

<p>Thanks</p>

<p>Mark</p>
]]>
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        <title>Question: Up squared i12 UART is not working</title>
        <link>https://forum.up-community.org/discussion/34994/question-up-squared-i12-uart-is-not-working</link>
        <pubDate>Fri, 03 Jan 2025 09:07:22 +0000</pubDate>
        <category>UP Squared i12 Linux</category>
        <dc:creator>khkim</dc:creator>
        <guid isPermaLink="false">34994@/discussions</guid>
        <description><![CDATA[<p>I am experiencing an issue with UART communication.<br />
Although the devices are initiated correctly, the echo test using a loopback connection does not work.</p>

<p>[ System Info ]<br />
Model: UP Squared i12, Intel Core i7-1260P<br />
OS: Ubuntu 22.04.5 LTS<br />
Kernel: 6.8.0-50-generic<br />
Driver: pinctrl-upboard (v1.1.6)</p>

<p>[Observations]<br />
When executing "dmesg | grep tty*", ttyS4 and ttyS5 appear to be activated.<br />
[2.988076] dw-apb-uart.6: ttyS4 at MMIO 0x4017006000 (irq = 16, base_baud = 6250000) is a 16550A<br />
[3.015300] dw-apb-uart.7: ttyS5 at MMIO 0x4017007000 (irq = 17, base_baud = 6250000) is a 16550A</p>

<p>[Run Test]<br />
1. To perform the UART Loopback Test, pin8 and pin10 were connected with a jumper.<br />
2. Open terminal “screen /dev/ttyS5 115200”.<br />
3. Enter text into the terminal to perform an echo test.</p>

<p>[ Result ]<br />
Characters entered in the terminal are not echoed.</p>

<p>[Question]<br />
I also tested this setup under Ubuntu 20.04 with kernel versions 5.15.x and 5.4.x, but the issue persists.<br />
Could you help identify the issue or suggest further debugging steps?</p>

<p>Thank you!!</p>
]]>
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