[PATCH] dt-bindings: serial: 8250: Add Aspeed AST2600 and AST2700 uart compatible

Yu-Che Hsieh <[email protected]> Tue, 21 Jul 2026 09:44:23 +0800
Newsgroups org.kernel.vger.linux-serial,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel
Message-ID <20260721-upstream-ast2700-vuart-support-v1-1-b4ed612b1aa2@aspeedtech.com>
The AST2600 and AST2700 VUART controllers are identical to the AST2500
VUART controller.

Add the "aspeed,ast2600-vuart" and "aspeed,ast2700-vuart" compatible
strings and fall back to "aspeed,ast2500-vuart" for compatibility with
the existing driver.

Signed-off-by: Yu-Che Hsieh <[email protected]>
---
 Documentation/devicetree/bindings/serial/8250.yaml | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/serial/8250.yaml b/Documentation/devicetree/bindings/serial/8250.yaml
index bb7b9c87a807..8c2c177faf89 100644
--- a/Documentation/devicetree/bindings/serial/8250.yaml
+++ b/Documentation/devicetree/bindings/serial/8250.yaml
@@ -23,7 +23,8 @@ allOf:
     then:
       properties:
         compatible:
-          const: aspeed,ast2500-vuart
+          contains:
+            const: aspeed,ast2500-vuart
   - if:
       properties:
         compatible:
@@ -188,6 +189,11 @@ properties:
               - loongson,ls2k2000-uart
           - const: loongson,ls2k1500-uart
           - const: ns16550a
+      - items:
+          - enum:
+              - aspeed,ast2600-vuart
+              - aspeed,ast2700-vuart
+          - const: aspeed,ast2500-vuart
 
   reg:
     maxItems: 1

---
base-commit: da7b5fd4e17f8e44c5590f2d603c01d499f056e6
change-id: 20260717-upstream-ast2700-vuart-support-d21b85ce1a52

Best regards,
-- 
Yu-Che Hsieh <[email protected]>