linux-kernel - [PATCH] dt-bindings: arm: Allow 32-bit 'cpu-release-addr' values

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Date:   Thu,  3 Mar 2022 10:57:09 -0600
From:   Rob Herring <robh@...nel.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] dt-bindings: arm: Allow 32-bit 'cpu-release-addr' values

While the DT Spec says 'cpu-release-addr' is always 64-bit, some 32-bit Arm
DTs used a 32-bit value. We're now stuck with those cases, so add uint32 as
a valid type.

Signed-off-by: Rob Herring <robh@...nel.org>
---
 Documentation/devicetree/bindings/arm/cpus.yaml | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/Documentation/devicetree/bindings/arm/cpus.yaml b/Documentation/devicetree/bindings/arm/cpus.yaml
index 85a31ca862d0..ed04650291a8 100644
--- a/Documentation/devicetree/bindings/arm/cpus.yaml
+++ b/Documentation/devicetree/bindings/arm/cpus.yaml
@@ -233,14 +233,14 @@ properties:
           - ti,am4372
 
   cpu-release-addr:
-    $ref: '/schemas/types.yaml#/definitions/uint64'
-
+    oneOf:
+      - $ref: '/schemas/types.yaml#/definitions/uint32'
+      - $ref: '/schemas/types.yaml#/definitions/uint64'
     description:
+      The DT specification defines this as 64-bit always, but some 32-bit Arm
+      systems have used a 32-bit value which must be supported.
       Required for systems that have an "enable-method"
         property value of "spin-table".
-      On ARM v8 64-bit systems must be a two cell
-        property identifying a 64-bit zero-initialised
-        memory location.
 
   cpu-idle-states:
     $ref: '/schemas/types.yaml#/definitions/phandle-array'
-- 
2.32.0