device tree blog

Author: Logan Blyth

_posts/2024-06-05-Device-Tree.md

@@ -0,0 +1,23 @@
+---
+title: "Getting dtbs_check Working"
+categories:
+  - Blog
+tags:
+  - Kernel Builds
+  - Embedded
+  - Device Tree
+  - Cross Compile
+---
+# Just a Quick Note for Myself
+I have off and on been working on getting a device tree files submitted for a Solid Run board that I own. I would like to have an easier time running OpenWrt on the board. Uptreaming for the win.
+
+I had a [well short attempt](https://lore.kernel.org/linux-devicetree/[email protected]/) to add the device tree file as it came from Solid Run. So after working out the small naming problems I decided I want to try to use the `dtbs_check` functionality in the kernel makefile. In case I don't get this merged upstream I want to document how to get this check running:
+
+1. Get the kernel source tree
+2. `make CROSS_COMPILE=aarch64-linux-gnu- ARCH=arm64 KBUILD_OUTPUT=out/ defconfig`
+3. `make CHECK_DTBS=y marvell/cn9130-cf-pro.dtb`
+
+
+# Links for later
+* [Devicetree names](https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation)
+* [Linaro Blog](https://www.linaro.org/blog/tips-and-tricks-for-validating-devicetree-sources-with-the-devicetree-schema/)