[PATCH] dt-bindings: timer: narrow regex for unit address to hex numbers

[Krzysztof Kozlowski]

Regular expression used to match the unit address part should not allow
non-hex numbers.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
---
 .../devicetree/bindings/timer/arm,arch_timer_mmio.yaml          | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/timer/arm,arch_timer_mmio.yaml b/Documentation/devicetree/bindings/timer/arm,arch_timer_mmio.yaml
index 7a4a6ab85970..5b9fda2a81e0 100644
--- a/Documentation/devicetree/bindings/timer/arm,arch_timer_mmio.yaml
+++ b/Documentation/devicetree/bindings/timer/arm,arch_timer_mmio.yaml
@@ -60,7 +60,7 @@ properties:
       be implemented in an always-on power domain."
 
 patternProperties:
-  '^frame@[0-9a-z]*$':
+  '^frame@[0-9a-f]*$':
     type: object
     additionalProperties: false
     description: A timer node has up to 8 frame sub-nodes, each with the following properties.
-- 
2.34.1