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-rw-r--r--Documentation/devicetree/bindings/timer/arm,arch_timer_mmio.yaml2
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/timer/arm,arch_timer_mmio.yaml b/Documentation/devicetree/bindings/timer/arm,arch_timer_mmio.yaml
index 7a4a6ab85970..ab8f28993139 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.