comparing_device_trees_with_dtx_diff
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comparing_device_trees_with_dtx_diff [2018/11/17 16:13] rpjday [Comparing two .dts files already in the kernel source tree (Part one)] |
comparing_device_trees_with_dtx_diff [2018/11/17 18:33] rpjday [Comparing two .dts files already in the kernel source tree (Part deux)] |
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| In short, as long as you're still inside the relevant kernel source tree, comparisons will work -- you just need to make sure the ''dtx_diff'' script is told where the top of the kernel source tree is. | In short, as long as you're still inside the relevant kernel source tree, comparisons will work -- you just need to make sure the ''dtx_diff'' script is told where the top of the kernel source tree is. | ||
| + | |||
| + | ===== Comparing two device tree files out of tree -- apparent bug ===== | ||
| + | |||
| + | What doesn't seem to work is comparing two device tree files that are outside the confines of a kernel source tree, even if you identify the kernel source tree. Below, I copy the same two files to ''/tmp'' and try to do the comparison there, referring back to the same kernel source tree: | ||
| + | |||
| + | <code> | ||
| + | $ cp imx6q{,p}-sabresd.dts /tmp | ||
| + | $ cd /tmp | ||
| + | $ dtx_diff -s ~/k/git imx6q{,p}-sabresd.dts | ||
| + | imx6qp-sabresd.dts:45:10: fatal error: imx6qp.dtsi: No such file or directory | ||
| + | #include "imx6qp.dtsi" | ||
| + | ^~~~~~~~~~~~~ | ||
| + | imx6q-sabresd.dts:15:10: fatal error: imx6q.dtsi: No such file or directory | ||
| + | #include "imx6q.dtsi" | ||
| + | ^~~~~~~~~~~~ | ||
| + | compilation terminated. | ||
| + | compilation terminated. | ||
| + | Error: imx6qp-sabresd.dts:43.9-10 Error: imx6q-sabresd.dts:13.9-10 syntax errorsyntax error | ||
| + | |||
| + | FATAL ERROR: FATAL ERROR: Unable to parse input tree | ||
| + | Unable to parse input tree | ||
| + | |||
| + | Possible hints to resolve the above error: | ||
| + | |||
| + | (hints might not fix the problem) | ||
| + | Possible hints to resolve the above error: | ||
| + | (hints might not fix the problem) | ||
| + | |||
| + | |||
| + | No hints available. | ||
| + | No hints available. | ||
| + | $ | ||
| + | </code> | ||
| + | |||
| + | I have no idea why this fails -- obviously, even when telling ''dtx_diff'' where the kernel source tree is, the include search path is not being set correctly. I've already reported this as an apparent bug to the device tree mailing list. | ||
comparing_device_trees_with_dtx_diff.txt ยท Last modified: 2018/11/17 18:33 by rpjday
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