linux-kernel - [PATCH v2 1/3] dt-bindings: i2c: spacemit: add optional resets

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Message-Id: <20251219-i2c-reset-v2-1-ad201a602e74@gmail.com>
Date: Fri, 19 Dec 2025 15:42:20 +0800
From: Encrow Thorne <jyc0019@...il.com>
To: Troy Mitchell <troy.mitchell@...ux.spacemit.com>, 
 Andi Shyti <andi.shyti@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Yixun Lan <dlan@...too.org>, 
 Philipp Zabel <p.zabel@...gutronix.de>, Paul Walmsley <pjw@...nel.org>, 
 Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>, 
 Alexandre Ghiti <alex@...ti.fr>
Cc: Troy Mitchell <troymitchell988@...il.com>, 
 Guodong Xu <guodong@...cstar.com>, linux-i2c@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org, 
 spacemit@...ts.linux.dev, linux-kernel@...r.kernel.org, 
 Encrow Thorne <jyc0019@...il.com>
Subject: [PATCH v2 1/3] dt-bindings: i2c: spacemit: add optional resets

The I2C controller requires a reset to ensure it starts from a clean state.

Add the 'resets' property to support this hardware requirement.

Signed-off-by: Encrow Thorne <jyc0019@...il.com>
---
 Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml b/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml
index b7220fff2235..1290106e28e6 100644
--- a/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml
@@ -32,6 +32,9 @@ properties:
       - const: func
       - const: bus
 
+  resets:
+    maxItems: 1
+
   clock-frequency:
     description: |
       K1 support three different modes which running different frequencies

-- 
2.25.1