[PATCH] docs: dt: writing-schema: add example for multiple DT_SCHEMA_FILES

[Hugo Villeneuve <hugo@xxxxxxxxxxx>]

From: Hugo Villeneuve <hvilleneuve@xxxxxxxxxxxx>

Variable DT_SCHEMA_FILES can specify multiple files, but the
documentation does not indicate how to do it. Each entry needs to be
separated by a column symbol ':'.

Add an example to make it more obvious how to specify multiple
DT_SCHEMA_FILES.

Signed-off-by: Hugo Villeneuve <hvilleneuve@xxxxxxxxxxxx>
---
 Documentation/devicetree/bindings/writing-schema.rst | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/writing-schema.rst b/Documentation/devicetree/bindings/writing-schema.rst
index 4a381d20f2b4..a500d3c2e12e 100644
--- a/Documentation/devicetree/bindings/writing-schema.rst
+++ b/Documentation/devicetree/bindings/writing-schema.rst
@@ -159,11 +159,13 @@ It is possible to run both in a single command::
     make dt_binding_check dtbs_check
 
 It is also possible to run checks with a subset of matching schema files by
-setting the ``DT_SCHEMA_FILES`` variable to a specific schema file or pattern.
+setting the ``DT_SCHEMA_FILES`` variable to a specific schema file, multiple
+schema files or pattern.
 
 ::
 
     make dt_binding_check DT_SCHEMA_FILES=trivial-devices.yaml
+    make dt_binding_check DT_SCHEMA_FILES=trivial-devices.yaml:rtc.yaml
     make dt_binding_check DT_SCHEMA_FILES=/gpio/
     make dtbs_check DT_SCHEMA_FILES=trivial-devices.yaml
 

base-commit: 633b47cb009d09dc8f4ba9cdb3a0ca138809c7c7
-- 
2.30.2