linux-kernel - [PATCH v3 1/2] dt-bindings: hwmon: Add AST2700 compatible

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Message-ID: <20251120-upstream_pwm_tach-v3-1-eaa2f9b300a2@aspeedtech.com>
Date: Thu, 20 Nov 2025 19:12:31 +0800
From: Billy Tsai <billy_tsai@...eedtech.com>
To: Guenter Roeck <linux@...ck-us.net>, 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>,
	Billy Tsai <billy_tsai@...eedtech.com>
CC: <linux-hwmon@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-aspeed@...ts.ozlabs.org>,
	<linux-kernel@...r.kernel.org>, <BMC-SW@...eedtech.com>
Subject: [PATCH v3 1/2] dt-bindings: hwmon: Add AST2700 compatible

Adds support for the AST2700 PWM/Tach controller by extending the
compatible string enumeration in the device tree binding.

The AST2700 PWM/Tach hardware is compatible with the existing binding
schema and requires no additional properties or modifications beyond
the new compatible string.

Signed-off-by: Billy Tsai <billy_tsai@...eedtech.com>
---
 Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml b/Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml
index 9e5ed901ae54..851fb16ec7fa 100644
--- a/Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml
+++ b/Documentation/devicetree/bindings/hwmon/aspeed,g6-pwm-tach.yaml
@@ -18,8 +18,11 @@ description: |
 
 properties:
   compatible:
-    enum:
-      - aspeed,ast2600-pwm-tach
+    oneOf:
+      - items:
+          - const: aspeed,ast2700-pwm-tach
+          - const: aspeed,ast2600-pwm-tach
+      - const: aspeed,ast2600-pwm-tach
 
   reg:
     maxItems: 1

-- 
2.34.1