linux-kernel - [PATCH v3 1/3] dt-bindings: arm: amlogic: introduce specific compatibles for S4 family

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Message-Id: <20260115030015.1334517-2-nick@khadas.com>
Date: Thu, 15 Jan 2026 11:00:13 +0800
From: Nick Xie <nick@...das.com>
To: neil.armstrong@...aro.org,
	khilman@...libre.com,
	jbrunet@...libre.com,
	martin.blumenstingl@...glemail.com,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-amlogic@...ts.infradead.org
Cc: xianwei.zhao@...ogic.com,
	christianshewitt@...il.com,
	krzk+dt@...nel.org,
	robh@...nel.org,
	conor+dt@...nel.org,
	nick@...qinick.com,
	Nick Xie <nick@...das.com>
Subject: [PATCH v3 1/3] dt-bindings: arm: amlogic: introduce specific compatibles for S4 family

The Amlogic S4 SoC family includes multiple variants, such as the S805X2
and S905Y4. Currently, the bindings only define the generic "amlogic,s4"
compatible.

This patch introduces specific compatibles "amlogic,s805x2" and
"amlogic,s905y4" to properly differentiate these SoCs while keeping
"amlogic,s4" as the family fallback.

This allows for more precise hardware description and future-proofing
if SoC-specific quirks arise.

Signed-off-by: Nick Xie <nick@...das.com>
---
 Documentation/devicetree/bindings/arm/amlogic.yaml | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/amlogic.yaml b/Documentation/devicetree/bindings/arm/amlogic.yaml
index 08d9963fe9259..a885278bc4e2e 100644
--- a/Documentation/devicetree/bindings/arm/amlogic.yaml
+++ b/Documentation/devicetree/bindings/arm/amlogic.yaml
@@ -245,6 +245,14 @@ properties:
         items:
           - enum:
               - amlogic,aq222
+          - const: amlogic,s805x2
+          - const: amlogic,s4
+
+      - description: Boards with the Amlogic Meson S4 S905Y4 SoC
+        items:
+          - enum:
+              - khadas,vim1s
+          - const: amlogic,s905y4
           - const: amlogic,s4
 
       - description: Boards with the Amlogic S6 S905X5 SoC
-- 
2.34.1