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david rice
2026-04-17 11:27:41 +01:00
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<title>MIPI Interactive Flicker Test &mdash; 2026-04-17 08:43:31</title>
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<body>
<h1>MIPI Interactive Flicker Test Report</h1>
<p class="meta">
Generated: 2026-04-17 08:43:31 &nbsp;|&nbsp;
Model: claude-opus-4-6
</p>
<div class="stop-box">
<strong>Stop reason:</strong> Test interrupted by operator (Ctrl+C)
</div>
<div>
<div class="stat s-confirmed">0 confirmed flicker(s)</div>
<div class="stat s-false">0 false alarm(s)</div>
<div class="stat s-claude-no">0 Claude said no</div>
</div>
<h2>D-PHY Configuration</h2>
<p>
Pixel clock: <strong>72.0 MHz</strong> &nbsp;|&nbsp;
Bit rate: <strong>432.0 Mbit/s per lane</strong> &nbsp;|&nbsp;
Byte clock: <strong>54.000 MHz</strong>
(18.519&thinsp;ns/byte) &nbsp;|&nbsp;
UI: <strong>2.315 ns</strong>
</p>
<table>
<tr>
<th>Field</th><th>Spec (ns)</th><th>Rnd Best</th><th>Rnd Up</th>
<th>Extra</th><th>Final</th><th>Actual (ns)</th><th>Status</th>
</tr>
<tr><td><code>lpx</code></td><td>&ge; 50.0</td><td>3</td><td>3</td><td>+0</td><td><strong>3</strong></td><td>55.56</td><td>&#10003;</td></tr>
<tr><td><code>hs_prepare</code></td><td>49.3 &ndash; 98.9</td><td>3</td><td>3</td><td>+0</td><td><strong>3</strong></td><td>55.56</td><td>&#10003;</td></tr>
<tr><td><code>hs_zero</code></td><td>&ge; 112.6</td><td>6</td><td>7</td><td>+0</td><td><strong>7</strong></td><td>129.63</td><td>&#10003;</td></tr>
<tr><td><code>hs_trail</code></td><td>&ge; 69.3</td><td>4</td><td>4</td><td>+0</td><td><strong>4</strong></td><td>74.07</td><td>&#10003;</td></tr>
<tr><td><code>hs_exit</code></td><td>&ge; 100.0</td><td>5</td><td>6</td><td>+0</td><td><strong>6</strong></td><td>111.11</td><td>&#10003;</td></tr>
<tr><td><code>clk_prepare</code></td><td>38.0 &ndash; 95.0</td><td>2</td><td>3</td><td>+0</td><td><strong>3</strong></td><td>55.56</td><td>&#10003;</td></tr>
<tr><td><code>clk_zero</code></td><td>&ge; 244.4</td><td>13</td><td>14</td><td>+0</td><td><strong>14</strong></td><td>259.26</td><td>&#10003;</td></tr>
<tr><td><code>clk_post</code></td><td>&ge; 180.4</td><td>10</td><td>10</td><td>+0</td><td><strong>10</strong></td><td>185.19</td><td>&#10003;</td></tr>
<tr><td><code>clk_trail</code></td><td>&ge; 60.0</td><td>3</td><td>4</td><td>+0</td><td><strong>4</strong></td><td>74.07</td><td>&#10003;</td></tr>
</table>
<p style="color:#2e7d32">&#10003; All D-PHY v1.1 Table&nbsp;14 constraints satisfied.</p>
<h3>Samsung DSIM Registers</h3>
<table>
<tr><th>Register</th><th>Address</th><th>Value</th><th>Field breakdown</th></tr>
<tr>
<td>PHY_TIMING</td><td><code>0xb4</code></td>
<td><code>0x00000306</code></td>
<td>lpx=3 &nbsp; hs_exit=6</td>
</tr>
<tr>
<td>PHY_TIMING1</td><td><code>0xb8</code></td>
<td><code>0x030e0a04</code></td>
<td>clk_prepare=3 &nbsp; clk_zero=14 &nbsp;
clk_post=10 &nbsp; clk_trail=4</td>
</tr>
<tr>
<td>PHY_TIMING2</td><td><code>0xbc</code></td>
<td><code>0x00030704</code></td>
<td>hs_prepare=3 &nbsp; hs_zero=7 &nbsp;
hs_trail=4</td>
</tr>
</table>
<h3>u-boot Commands</h3>
<pre style="background:#f5f5f5;padding:12px;border-radius:4px;
white-space:pre-wrap;font-size:0.88em"># D-PHY PHY timing registers (pixel clock 72.0 MHz, 432.0 Mbit/s, byte clock 54.000 MHz)
#
# PHY_TIMING (0xb4) = 0x00000306 lpx=3 hs_exit=6
# PHY_TIMING1 (0xb8) = 0x030e0a04 clk_prepare=3 clk_zero=14 clk_post=10 clk_trail=4
# PHY_TIMING2 (0xbc) = 0x00030704 hs_prepare=3 hs_zero=7 hs_trail=4
# Enable Round-Up rounding (dsi-tweak bit 2)
setenv flb_dtovar &quot;${flb_dtovar} dsi-tweak=4&quot;
saveenv
boot</pre>
<h2>Event Log</h2>
<p>No flicker suspects were detected during this test run.</p>
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