linux-kernel - [PATCH v6 3/6] dt-bindings: mfd: aspeed,ast2x00-scu: allow #size-cells range

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Message-ID: <20251022070543.1169173-4-ryan_chen@aspeedtech.com>
Date: Wed, 22 Oct 2025 15:05:40 +0800
From: Ryan Chen <ryan_chen@...eedtech.com>
To: ryan_chen <ryan_chen@...eedtech.com>, <bmc-sw@...eedtech.com>, 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>, <jk@...econstruct.com.au>, Lee Jones
	<lee@...nel.org>, Catalin Marinas <catalin.marinas@....com>, Will Deacon
	<will@...nel.org>, Arnd Bergmann <arnd@...db.de>, Bjorn Andersson
	<bjorn.andersson@....qualcomm.com>, Geert Uytterhoeven
	<geert@...ux-m68k.org>, Nishanth Menon <nm@...com>,
	<nfraprado@...labora.com>, Taniya Das <quic_tdas@...cinc.com>, Lad Prabhakar
	<prabhakar.mahadev-lad.rj@...renesas.com>, Kuninori Morimoto
	<kuninori.morimoto.gx@...esas.com>, Eric Biggers <ebiggers@...nel.org>,
	<devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-aspeed@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v6 3/6] 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 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.yaml b/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.yaml
index da1887d7a8fe..ee7855845e97 100644
--- a/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.yaml
+++ b/Documentation/devicetree/bindings/mfd/aspeed,ast2x00-scu.yaml
@@ -38,7 +38,7 @@ properties:
     maximum: 2
 
   '#size-cells':
-    const: 1
+    enum: [1, 2]
 
   '#clock-cells':
     const: 1
-- 
2.34.1