linux-kernel - [PATCH 5/8] dt-bindings: serial: 8250: add SpacemiT K3 UART compatible

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Message-Id: <20251216-k3-basic-dt-v1-5-a0d256c9dc92@riscstar.com>
Date: Tue, 16 Dec 2025 21:32:29 +0800
From: Guodong Xu <guodong@...cstar.com>
To: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Paul Walmsley <pjw@...nel.org>, 
 Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>, 
 Alexandre Ghiti <alex@...ti.fr>, Yixun Lan <dlan@...too.org>, 
 Daniel Lezcano <daniel.lezcano@...aro.org>, 
 Thomas Gleixner <tglx@...utronix.de>, 
 Samuel Holland <samuel.holland@...ive.com>, 
 Anup Patel <anup@...infault.org>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Jiri Slaby <jirislaby@...nel.org>, Lubomir Rintel <lkundrak@...sk>, 
 Yangyu Chen <cyy@...self.name>
Cc: Paul Walmsley <paul.walmsley@...ive.com>, 
 Palmer Dabbelt <palmer@...ive.com>, Conor Dooley <conor@...nel.org>, 
 Heinrich Schuchardt <xypron.glpk@....de>, 
 Kevin Meng Zhang <zhangmeng.kevin@...ux.spacemit.com>, 
 devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, spacemit@...ts.linux.dev, 
 linux-serial@...r.kernel.org, Guodong Xu <guodong@...cstar.com>
Subject: [PATCH 5/8] dt-bindings: serial: 8250: add SpacemiT K3 UART
 compatible

The SpacemiT K3 UART controller is compatible with the Intel XScale UART.
Add K3 UART binding and allow describing it with a fixed clock-frequency
for now.

The clocks and clock-names properties will be made mandatory in a future
patch, once the K3 clock driver and device tree are merged.

Signed-off-by: Guodong Xu <guodong@...cstar.com>
---
 Documentation/devicetree/bindings/serial/8250.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/serial/8250.yaml b/Documentation/devicetree/bindings/serial/8250.yaml
index 167ddcbd880058b6dcea9ce33bd814ff8ba6b0f6..73851f19330d7f9fc254efcd32b5977feada0b07 100644
--- a/Documentation/devicetree/bindings/serial/8250.yaml
+++ b/Documentation/devicetree/bindings/serial/8250.yaml
@@ -160,6 +160,7 @@ properties:
           - enum:
               - mrvl,mmp-uart
               - spacemit,k1-uart
+              - spacemit,k3-uart
           - const: intel,xscale-uart
       - items:
           - enum:

-- 
2.43.0