[RFC v1 4/5] dt-bindings: riscv: add vector sub-extension dependencies
Conor Dooley
conor at kernel.org
Wed Oct 2 09:10:57 PDT 2024
From: Conor Dooley <conor.dooley at microchip.com>
Section 33.18.2. Zve*: Vector Extensions for Embedded Processors
in [1] says:
| The Zve32f and Zve64x extensions depend on the Zve32x extension. The Zve64f extension depends
| on the Zve32f and Zve64x extensions. The Zve64d extension depends on the Zve64f extension
| The Zve32x extension depends on the Zicsr extension. The Zve32f and Zve64f extensions depend
| upon the F extension
| The Zve64d extension depends upon the D extension
Apply these rules to the bindings to help prevent invalid combinations.
Link: https://github.com/riscv/riscv-isa-manual/releases/tag/riscv-isa-release-698e64a-2024-09-09 [1]
Signed-off-by: Conor Dooley <conor.dooley at microchip.com>
---
.../devicetree/bindings/riscv/extensions.yaml | 46 +++++++++++++++++++
1 file changed, 46 insertions(+)
diff --git a/Documentation/devicetree/bindings/riscv/extensions.yaml b/Documentation/devicetree/bindings/riscv/extensions.yaml
index 779f5cfab806e..abf2579171c5b 100644
--- a/Documentation/devicetree/bindings/riscv/extensions.yaml
+++ b/Documentation/devicetree/bindings/riscv/extensions.yaml
@@ -605,6 +605,52 @@ properties:
contains:
const: zca
+ - if:
+ contains:
+ const: zve32x
+ then:
+ contains:
+ const: zicsr
+
+ - if:
+ contains:
+ const: zve32f
+ then:
+ allOf:
+ - contains:
+ const: f
+ - contains:
+ const: zve32x
+
+ - if:
+ contains:
+ const: zve64x
+ then:
+ contains:
+ const: zve32x
+
+ - if:
+ contains:
+ const: zve64f
+ then:
+ allOf:
+ - contains:
+ const: f
+ - contains:
+ const: zve32f
+ - contains:
+ const: zve64x
+
+ - if:
+ contains:
+ const: zve64d
+ then:
+ allOf:
+ - contains:
+ const: d
+ - contains:
+ const: zve64f
+
allOf:
# Zcf extension does not exist on rv64
- if:
--
2.45.2
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