Tree base:
522de43f3f33 ("dt-bindings: net: dsa: nxp,sja1105: make spi-cpol optional for sja1110")
Now at:
48af053b6926 ("dt-bindings: arm: fsl: Add SolidRun i.MX8DXL SoM and HummingBoard")
 ====== Checking before the patch ======
which: no dt-doc-validate in (/usr/local/bin:/usr/bin)
Error: 'dt-doc-validate' not found!
Ensure dtschema python package is installed and in your PATH.
Current PATH is:
/usr/local/bin:/usr/bin
make[2]: *** [Documentation/devicetree/bindings/Makefile:13: check_dtschema_version] Error 1
make[1]: *** [/srv/nipa-poller/net-next/wt-1/Makefile:1604: dt_binding_schemas] Error 2
make: *** [Makefile:248: __sub-make] Error 2
 ====== Checking the tree with the patch ======
which: no dt-doc-validate in (/usr/local/bin:/usr/bin)
Error: 'dt-doc-validate' not found!
Ensure dtschema python package is installed and in your PATH.
Current PATH is:
/usr/local/bin:/usr/bin
make[2]: *** [Documentation/devicetree/bindings/Makefile:13: check_dtschema_version] Error 1
make[1]: *** [/srv/nipa-poller/net-next/wt-1/Makefile:1604: dt_binding_schemas] Error 2
make: *** [Makefile:248: __sub-make] Error 2