[PATCH 1/2] dt-bindings: arm: bcm2835: Specify /system/linux,revision property

[Jonathan Neuschäfer]

The Raspberry Pi bootloader provides a revision code[0] in the
devicetree, at /system/linux,revision. This patch adds
/system/linux,revision to the schema to allow it to be used in
mainline Linux.

[0]: https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#new-style-revision-codes
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer at gmx.net>
---
 Documentation/devicetree/bindings/arm/bcm/bcm2835.yaml | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/bcm/bcm2835.yaml b/Documentation/devicetree/bindings/arm/bcm/bcm2835.yaml
index 162a39dab21823..c6abf818b5ea57 100644
--- a/Documentation/devicetree/bindings/arm/bcm/bcm2835.yaml
+++ b/Documentation/devicetree/bindings/arm/bcm/bcm2835.yaml
@@ -54,6 +54,18 @@ properties:
               - raspberrypi,model-zero-2-w
           - const: brcm,bcm2837

+  system:
+    type: object
+    additionalProperties: true
+    properties:
+
+      linux,revision:
+        $ref: /schemas/types.yaml#/definitions/string-array
+        description:
+          The "system revision" number, as determined by the bootloader.
+          https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#new-style-revision-codes
+
+
 additionalProperties: true

 ...

--
2.43.0