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Thu, 18 Dec 2025 23:42:38 -0800 (PST) From: Encrow Thorne Date: Fri, 19 Dec 2025 15:42:20 +0800 Subject: [PATCH v2 1/3] dt-bindings: i2c: spacemit: add optional resets Precedence: bulk X-Mailing-List: spacemit@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20251219-i2c-reset-v2-1-ad201a602e74@gmail.com> References: <20251219-i2c-reset-v2-0-ad201a602e74@gmail.com> In-Reply-To: <20251219-i2c-reset-v2-0-ad201a602e74@gmail.com> To: Troy Mitchell , Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Yixun Lan , Philipp Zabel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti Cc: Troy Mitchell , Guodong Xu , linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org, Encrow Thorne X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1766130147; l=857; i=jyc0019@gmail.com; s=20251009; h=from:subject:message-id; bh=/r6f9IRpVGju3Ryu7UDsRNF+0ADreBgeJr9SFE2YWMw=; b=wvV25q8btJ4G30xXAzQfVKnpzsZrDgyjSlGnmi9bOhuNQ9Aeuh6j0rLJZZ2UdmpI8Wk3BNmIX Bd8J5IqmhlsD4ZMfSltfVzsoWEpZ9saVGE6AaJqKlfN0k6035M6lSH8 X-Developer-Key: i=jyc0019@gmail.com; a=ed25519; pk=nnjLv04DUE0FXih6IcJUOjWFTEoo4xYQOu7m5RRHvZ4= 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 --- 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