linux-kernel - [PATCH] dt-bindings: mfd: aspeed,ast2x00-scu: allow #size-cells range

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Message-ID: <20251020020745.2004916-1-ryan_chen@aspeedtech.com>
Date: Mon, 20 Oct 2025 10:07:45 +0800
From: Ryan Chen <ryan_chen@...eedtech.com>
To: ryan_chen <ryan_chen@...eedtech.com>, Lee Jones <lee@...nel.org>, "Rob
 Herring" <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, "Conor
 Dooley" <conor+dt@...nel.org>, Joel Stanley <joel@....id.au>, Andrew Jeffery
	<andrew@...econstruct.com.au>, <devicetree@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-aspeed@...ts.ozlabs.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH] dt-bindings: mfd: aspeed,ast2x00-scu: allow #size-cells range

The #size-cells property in the Aspeed SCU binding is currently
fixed to a constant value of 1. However, newer SoCs (ex. AST2700)
may require two size cells to describe certain subregions or
subdevices.

This patch updates the schema to allow #size-cells values in
the range of 1 to 2. This makes the binding more flexible
while maintaining compatibility with existing platforms.
It also resolves dt-binding validation warnings reported
by `make dt_binding_check`.

Signed-off-by: Ryan Chen <ryan_chen@...eedtech.com>
---
 Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.yaml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.yaml b/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.yaml
index 5eccd10d95ce..1d3f686577db 100644
--- a/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.yaml
+++ b/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.yaml
@@ -38,7 +38,8 @@ properties:
     maximum: 2
 
   '#size-cells':
-    const: 1
+    minimum: 1
+    maximum: 2
 
   '#clock-cells':
     const: 1
-- 
2.34.1