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Sun, 02 Mar 2025 21:33:45 -0800 (PST) Received: from [127.0.1.1] ([240e:341:e66:ce00:d50e:ead5:2cdd:617b]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7364b4eff66sm1856002b3a.83.2025.03.02.21.33.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 02 Mar 2025 21:33:45 -0800 (PST) From: Troy Mitchell Date: Mon, 03 Mar 2025 13:30:55 +0800 Subject: [PATCH RESEND v5 1/2] dt-bindings: i2c: spacemit: add support for K1 SoC MIME-Version: 1.0 Message-Id: <20250303-k1-i2c-master-v5-1-21dfc7adfe37@gmail.com> References: <20250303-k1-i2c-master-v5-0-21dfc7adfe37@gmail.com> In-Reply-To: <20250303-k1-i2c-master-v5-0-21dfc7adfe37@gmail.com> To: Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Yixun Lan , Troy Mitchell Cc: linux-riscv@lists.infradead.org, linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, spacemit@lists.linux.dev, Conor Dooley X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1740979868; l=2000; i=troymitchell988@gmail.com; h=from:subject:message-id; bh=WyvZQZnkegQJcav1opY1yTg+77W2I4l0eYIU9UQKJUM=; b=0ubbWNBWTlWWqmCoMVoGa4yBgAQyxEgJ+1WF2YIEEYL79YMfXOo4pMDgR72wGcovLwLiSJ1u2 Qu2PRZqdELIDEThOa50RkOtck3dt3NFvAOJrN60sWZKm694J8pP/IDm X-Developer-Key: i=troymitchell988@gmail.com; a=ed25519; pk=2spEMGBd/Wkpd36N1aD9KFWOk0aHrhVxZQt+jxLXVC0= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250302_213346_215504_68C68C87 X-CRM114-Status: GOOD ( 10.29 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org The I2C of K1 supports fast-speed-mode and high-speed-mode, and supports FIFO transmission. Reviewed-by: Conor Dooley Signed-off-by: Troy Mitchell --- .../devicetree/bindings/i2c/spacemit,k1-i2c.yaml | 59 ++++++++++++++++++++++ 1 file changed, 59 insertions(+) diff --git a/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml b/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml new file mode 100644 index 0000000000000000000000000000000000000000..db49f1f473e6f166f534b276c86b3951d86341c3 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml @@ -0,0 +1,59 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/spacemit,k1-i2c.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: I2C controller embedded in SpacemiT's K1 SoC + +maintainers: + - Troy Mitchell + +properties: + compatible: + const: spacemit,k1-i2c + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + minItems: 2 + maxItems: 2 + + clock-names: + minItems: 2 + maxItems: 2 + + clock-frequency: + description: | + K1 support three different modes which running different frequencies + standard speed mode: up to 100000 (100Hz) + fast speed mode : up to 400000 (400Hz) + high speed mode : up to 3300000 (3.3Mhz) + default: 400000 + maximum: 3300000 + +required: + - compatible + - reg + - interrupts + - clocks + +unevaluatedProperties: false + +examples: + - | + i2c@d4010800 { + compatible = "spacemit,k1-i2c"; + reg = <0xd4010800 0x38>; + interrupt-parent = <&plic>; + interrupts = <36>; + clocks = <&ccu 176>, <&ccu 90>; + clock-names = "apb", "twsi"; + clock-frequency = <100000>; + }; + +...