[PATCH v7 02/11] dt-bindings: riscv: Require block-size for Zicbom, Zicbop, and Zicboz
From: Guodong Xu <hidden>
Date: 2026-09-15 07:16:36
Also in:
linux-devicetree, linux-kselftest, linux-riscv, lkml, spacemit
Subsystem:
open firmware and flattened device tree bindings, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Zicbom, Zicbop, and Zicboz have no default cache block size, so a
devicetree that declares one must also provide the matching
riscv,cbom/cbop/cboz-block-size property. Make it required so a
missing block-size property can be caught by dtbs_check.
Match only nodes that use riscv,isa-extensions, so nodes carrying just
the deprecated riscv,isa string are not affected.
Suggested-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Guodong Xu <redacted>
---
v7: Collected Acked-by from Conor Dooley.
v6: Only match nodes that have riscv,isa-extensions, fixing
dt_binding_check errors on legacy riscv,isa-only nodes (fix
suggested by Conor, breakage reported by Rob's bot).
v5: New patch.
---
.../devicetree/bindings/riscv/extensions.yaml | 32 ++++++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/Documentation/devicetree/bindings/riscv/extensions.yaml b/Documentation/devicetree/bindings/riscv/extensions.yaml
index 577d7ae5576b..d4cde2a7b8b2 100644
--- a/Documentation/devicetree/bindings/riscv/extensions.yaml
+++ b/Documentation/devicetree/bindings/riscv/extensions.yaml@@ -1211,6 +1211,38 @@ - if: not: contains: const: zilsd + # All three Zicbo* extensions require their block size property as there's no + # default. + - if: + properties: + riscv,isa-extensions: + contains: + const: zicbom + required: + - riscv,isa-extensions + then: + required: + - riscv,cbom-block-size + - if: + properties: + riscv,isa-extensions: + contains: + const: zicbop + required: + - riscv,isa-extensions + then: + required: + - riscv,cbop-block-size + - if: + properties: + riscv,isa-extensions: + contains: + const: zicboz + required: + - riscv,isa-extensions + then: + required: + - riscv,cboz-block-size additionalProperties: true ...
--
2.43.0