Tree base:
177b6e3d5bac ("dt-bindings: net: dsa: update the description of 'dsa,member' property")
Now at:
7c4fd197aba6 ("dt-bindings: net: dsa: add NETC switch")
 ====== 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:1600: 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:1600: dt_binding_schemas] Error 2
make: *** [Makefile:248: __sub-make] Error 2