From 9e320d7ca46aecf565c3900452acae579a7d0a9a Mon Sep 17 00:00:00 2001 From: Conor Dooley Date: Tue, 2 May 2023 00:17:39 +0800 Subject: [PATCH] dt-bindings: riscv: drop invalid comment about riscv,isa lower-case reasoning "Ease of parsing" may have been the initial argument for keeping this string in lower-case, but parsers may have been written that expect lower-case only. For example, the one in released kernels currently does not behave correctly for multi-letter extensions that begin with a capital letter. Allowing upper-case here brings about no benefit but would break compatibility between new devicetrees and older kernels. Drop the comment to avoid confusing people. Signed-off-by: Conor Dooley Reviewed-by: Andrew Jones Acked-by: Rob Herring Signed-off-by: Yangyu Chen Link: https://lore.kernel.org/r/tencent_3B8290DDC66D3E624132ED39C7465CDC9807@qq.com Signed-off-by: Palmer Dabbelt --- Documentation/devicetree/bindings/riscv/cpus.yaml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/riscv/cpus.yaml b/Documentation/devicetree/bindings/riscv/cpus.yaml index 3d2934b15e80..db5253a2a74a 100644 --- a/Documentation/devicetree/bindings/riscv/cpus.yaml +++ b/Documentation/devicetree/bindings/riscv/cpus.yaml @@ -94,7 +94,7 @@ properties: While the isa strings in ISA specification are case insensitive, letters in the riscv,isa string must be all - lowercase to simplify parsing. + lowercase. $ref: "/schemas/types.yaml#/definitions/string" pattern: ^rv(?:64|32)imaf?d?q?c?b?k?j?p?v?h?(?:[hsxz](?:[a-z])+)?(?:_[hsxz](?:[a-z])+)*$