linux-kernel - [PATCH v2 1/2] dt-bindings: riscv: cpus: add a ref the common cpu schema

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Date:   Thu, 15 Jun 2023 23:50:14 +0100
From:   Conor Dooley <conor@...nel.org>
To:     palmer@...belt.com
Cc:     conor@...nel.org, Conor Dooley <conor.dooley@...rochip.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        linux-riscv@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/2] dt-bindings: riscv: cpus: add a ref the common cpu schema

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

To permit validation of RISC-V cpu nodes, "additionalProperties: true"
needs to be swapped for "unevaluatedProperties: false". To facilitate
this in a way that passes dt_binding_check, a reference to the cpu
schema is required.

Disallow the generic cache-op-block-size property that that drags in,
since the RISC-V CBO extensions do not require a common size, and have
individual properties.

Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
---
 Documentation/devicetree/bindings/riscv/cpus.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/riscv/cpus.yaml b/Documentation/devicetree/bindings/riscv/cpus.yaml
index 3d2934b15e80..e89a10d9c06b 100644
--- a/Documentation/devicetree/bindings/riscv/cpus.yaml
+++ b/Documentation/devicetree/bindings/riscv/cpus.yaml
@@ -23,6 +23,9 @@ description: |
   two cores, each of which has two hyperthreads, could be described as
   having four harts.
 
+allOf:
+  - $ref: /schemas/cpu.yaml#
+
 properties:
   compatible:
     oneOf:
@@ -98,6 +101,9 @@ properties:
     $ref: "/schemas/types.yaml#/definitions/string"
     pattern: ^rv(?:64|32)imaf?d?q?c?b?k?j?p?v?h?(?:[hsxz](?:[a-z])+)?(?:_[hsxz](?:[a-z])+)*$
 
+  # RISC-V has multiple properties for cache op block sizes as the sizes
+  # differ between individual CBO extensions
+  cache-op-block-size: false
   # RISC-V requires 'timebase-frequency' in /cpus, so disallow it here
   timebase-frequency: false
 
-- 
2.39.2