https://devzone.nordicsemi.com/f/nordic-q-a/128612/spi-power-consumption-in-nrf5340I am Using SPI4 in nrf5340 and I am trying to put SPI in low power mode when not in use. How can I do that? Here is the code given: aliases { displayspi = &amp; spi4 ; } &amp; spi4 { compatible = &quot;nordic,nrf-spim&quot; ; status = &quot;okay&quot; ;en-USTelligent Community 13Mon, 06 Jul 2026 11:34:29 GMThttps://devzone.nordicsemi.com/thread/568809?ContentTypeID=1Mon, 06 Jul 2026 11:34:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5e0b6371-f349-4c2d-9e90-d665f5bf371eKazi Afroza Sultana<p>Hello,</p> <p>Can you please share your the main.c file and the prj.conf file?</p> <p>Thanks.</p> <p>BR</p> <p>Kazi</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/568791?ContentTypeID=1Mon, 06 Jul 2026 04:29:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:39c480d2-2170-4ad2-bb72-5970b3f1a48fUsama Shafiq<p>Yes I have already added these configurations in prj.conf and tried this as well but did not see any difference in power consumption</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/568781?ContentTypeID=1Fri, 03 Jul 2026 16:47:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:55ce1c54-c8fa-4bb7-9e49-5289a12a7d36Kazi Afroza Sultana<p>Hello,</p> <p>Your device tree looks ok. You can try to suspend and then resume the SPI manually from the application.</p> <p><pre class="ui-code" data-mode="text">#include &lt;zephyr/pm/device.h&gt; /* Suspend SPI for low power operation */ pm_device_action_run(display_spi_dev, PM_DEVICE_ACTION_SUSPEND); /* Resume SPI before next transfer */ pm_device_action_run(display_spi_dev, PM_DEVICE_ACTION_RESUME);</pre></p> <p>Do you have following configurations in the prj.conf file?</p> <p><pre class="ui-code" data-mode="text">CONFIG_SPI=y CONFIG_SPI_NRFX=y CONFIG_GPIO=y CONFIG_PM_DEVICE=y</pre></p><div style="clear:both;"></div>