<p><b>@benpicco</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/12322#discussion_r329372936">cpu/efm32/doc.txt</a>:</p>
<pre style='color:#555'>> @@ -62,7 +62,12 @@
  * =======================
  *
  * The EFM32/EFR32/EZR32 MCUs have support for low-power peripherals. Support
- * is enabled by default, but can be disabled by setting LOW_POWER_ENABLED=0.
+ * is enabled by default, but can be disabled if not used.
+ *
+ * - Setting `EFM32_LEUART_ENABLED=0` will disable support for the LEUART 
</pre>
<p>trailing whitespace</p>

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