linux-kernel - [PATCH v3 4/6] dt-bindings: riscv: d requires f

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Message-ID: <20250205-flatly-clover-ae7016cb6e04@spud>
Date: Wed,  5 Feb 2025 16:05:10 +0000
From: Conor Dooley <conor@...nel.org>
To: linux-riscv@...ts.infradead.org
Cc: conor@...nel.org,
	Conor Dooley <conor.dooley@...rochip.com>,
	Eric Biggers <ebiggers@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Clément Léger <cleger@...osinc.com>,
	Andy Chiu <andybnac@...il.com>,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH v3 4/6] dt-bindings: riscv: d requires f

From: Conor Dooley <conor.dooley@...rochip.com>

Per the specifications, the d extension for double-precision floating
point operations depends on the f extension for single-precision floating
point. Add that requirement to the bindings. This differs from the
Linux implementation, where single-precious only is not supported.

Reviewed-by: Clément Léger <cleger@...osinc.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
---
 Documentation/devicetree/bindings/riscv/extensions.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/riscv/extensions.yaml b/Documentation/devicetree/bindings/riscv/extensions.yaml
index a63b994e0763..ebb252275ddd 100644
--- a/Documentation/devicetree/bindings/riscv/extensions.yaml
+++ b/Documentation/devicetree/bindings/riscv/extensions.yaml
@@ -639,6 +639,12 @@ properties:
             https://github.com/T-head-Semi/thead-extension-spec/blob/95358cb2cca9489361c61d335e03d3134b14133f/xtheadvector.adoc.
 
     allOf:
+      - if:
+          contains:
+            const: d
+        then:
+          contains:
+            const: f
       # Zcb depends on Zca
       - if:
           contains:
-- 
2.45.2