# I.MX8M SoM Yocto Linux Add DTB

**URL:** <https://community.solid-run.com/t/i-mx8m-som-yocto-linux-add-dtb/687>\
**Category:** NXP i.MX8M Plus\
**Tags:** iMX8M-plus\
**Created:** [July 24, 2023, 1:17pm UTC](https://community.solid-run.com/t/i-mx8m-som-yocto-linux-add-dtb/687 "2023-07-24T13:17:46Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![philbot999](https://avatars.discourse-cdn.com/v4/letter/p/71e660/32.png) [@philbot999](https://community.solid-run.com/u/philbot999)\
**Post date:** [July 24, 2023, 1:17pm UTC](https://community.solid-run.com/t/i-mx8m-som-yocto-linux-add-dtb/687/1 "2023-07-24T13:17:46Z")

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I am evaluating the Analog Devices ADTF3175 time of flight eval kit:

> **[EVAL-ADTF3175 Evaluation Board | Analog Devices](https://www.analog.com/en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/eval-adtf3175.html)**
>
> The EVAL-ADTF3175D-NXZ time of flight (ToF) evaluation kit is showcasing the ADTF3175 module with ADI's depth ISP, the ADSD3500. The kit supports ethernet over USB connectivity to a PC for real-time visualization, capture and post processing of depth...

This kit contains the SolidRun iMX8M Plus SOM. Analog Devices provides instructions and a build script to use buildroot to produce a build. They have patched linux-imx to add V4L ( video for linux ) support for the camera. I have used Yocto and meta-solidrun-arm-imx8 to successfully patch the kernel with the AD patches and custom defconfig, and create a bootable image for the eval kit that does successfully boot. However it is missing the device tree ‘imx8mp-adi-tof-adsd3500.dtb’.

My next step is to get the device tree built.

So far I have done this in my linux-imx\_%.bbappend file:

`KERNEL_DEVICETREE:append = " imx8mp-adi-tof-adsd3500.dtb "`

I have verified in the tmp/work directory for linux-imx that device tree binary for the ADI time of flight module has been added to the Makefile for the Freescale dts files:

```auto
diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 49642e6f35b5..2aaeab0c6200 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -106,6 +106,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mp-evk.dtb imx8mp-evk-rm67191.dtb imx8mp-evk-it626
 dtb-$(CONFIG_ARCH_MXC) += imx8mq-evk.dtb imx8mq-evk-rpmsg.dtb imx8mp-ab2.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-ddr4-evk.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-evk-ndm.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-hummingboard-pulse.dtb imx8mp-cubox-m.dtb imx8mp-adi-tof-adsd3500.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mq-evk.dtb imx8mq-evk-rpmsg.dtb imx8mq-evk-pcie1-m2.dtb imx8mq-evk-usd-wifi.dtb \
 			  imx8mq-evk-usdhc2-m2.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mq-evk-ak4497.dtb imx8mq-evk-audio-tdm.dtb imx8mq-evk-pdm.dtb

```

I verified the patch was applied properly in the linux-imx work directory Makefile:

```auto
:~/build-xwayland-imx8mpsolidrun/tmp/work/imx8mpsolidrun-poky-linux/linux-imx/5.10.72+gitAUTOINC+a68e31b63f-r0/git/arch/arm64/boot/dts/freescale$ grep imx8mp-adi-tof-adsd3500.dtb *
Makefile: imx8mp-adi-tof-noreg.dtb imx8mp-adi-tof-adsd3500.dtb imx8mp-adi-tof-adsd3030.dtb
Makefile:dtb-$(CONFIG_ARCH_MXC) += imx8mp-hummingboard-pulse.dtb imx8mp-cubox-m.dtb imx8mp-adi-tof-adsd3500.dtb

```

However, the kernel builds for awhile and then fails with a missing target error:

`| make[2]: *** No rule to make target 'arch/arm64/boot/dts/imx8mp-adi-tof-adsd3500.dtb'. Stop.`

How can I add the imx8mp-adi-tof-adsd3500.dtb to the linux-imx build? Thank you.

---

<div class="post-metadata">

**Author:** ![jnettlet](https://dub1.discourse-cdn.com/flex005/user_avatar/community.solid-run.com/jnettlet/32/62_2.png) [@jnettlet](https://community.solid-run.com/u/jnettlet)\
**Post date:** [July 24, 2023, 5:20pm UTC](https://community.solid-run.com/t/i-mx8m-som-yocto-linux-add-dtb/687/2 "2023-07-24T17:20:44Z")

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Analog Devices product is using our SOM, however we do not maintain or support their software integration on top of our BSP. I would recommend opening a support ticket with their team.