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-rw-r--r--Documentation/devicetree/bindings/riscv/extensions.yaml2
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/riscv/extensions.yaml b/Documentation/devicetree/bindings/riscv/extensions.yaml
index 27beedb98198..63d81dc895e5 100644
--- a/Documentation/devicetree/bindings/riscv/extensions.yaml
+++ b/Documentation/devicetree/bindings/riscv/extensions.yaml
@@ -48,7 +48,7 @@ properties:
insensitive, letters in the riscv,isa string must be all
lowercase.
$ref: /schemas/types.yaml#/definitions/string
- pattern: ^rv(?:64|32)imaf?d?q?c?b?k?j?p?v?h?(?:[hsxz](?:[a-z])+)?(?:_[hsxz](?:[a-z])+)*$
+ pattern: ^rv(?:64|32)imaf?d?q?c?b?k?j?p?v?h?(?:[hsxz](?:[0-9a-z])+)?(?:_[hsxz](?:[0-9a-z])+)*$
deprecated: true
riscv,isa-base: