https://devzone.nordicsemi.com/f/nordic-q-a/106195/emmc-documentationHello, I am working on integrating a 5.1 EMMc with an NRF52840 running Zephyr. I am looking for some further documentation or a possible example. So far, I have found the following in Zephyr Docs. Thank you. https://docs.zephyrproject.org/latest/servicesen-USTelligent Community 13Thu, 30 Nov 2023 22:45:17 GMThttps://devzone.nordicsemi.com/thread/458411?ContentTypeID=1Thu, 30 Nov 2023 22:45:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:375c6260-0aaa-48d6-a76a-53d5143da947Joakim Jakobsen<p><span>As far as I can see we do not have any eMMC interfaces. We can support SD/MMC cards over SPI, but SPI support&nbsp;is not supported for eMMC.</span></p> <p><span>There are some previous tickets already on devzone discussing this topic. You might have some luck searching through some of those; <br />ie: <a href="https://devzone.nordicsemi.com/f/nordic-q-a/38452/emmc-integration">eMMC integration</a> </span></p> <p><span></span></p> <p><span>Br, <br />Joakim</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/458194?ContentTypeID=1Wed, 29 Nov 2023 22:47:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c0ac5715-0868-4636-b2d1-cbeb0aa5f781Ecic2002<p>If I understand you correctly, does the Zephyr EMMC support only consider the SPI protocol?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/458193?ContentTypeID=1Wed, 29 Nov 2023 20:55:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:47ca95de-9f6c-46b7-ba43-14338a5e91c8Turbo J<p>EMMC dropped SPI support around spec 4.5 version (i.e. many years ago).</p> <p>Check the datasheet of your chip if it still supported that mode, the NRF chips don&#39;t support the wider SD or EMMC modes in hardware.</p><div style="clear:both;"></div>