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Sun, 24 Nov 2024 22:50:23 -0800 (PST) From: Troy Mitchell X-Google-Original-From: Troy Mitchell Date: Mon, 25 Nov 2024 14:49:53 +0800 Subject: [PATCH v4 1/2] dt-bindings: i2c: spacemit: add support for K1 SoC Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241125-k1-i2c-master-v4-1-0f3d5886336b@gmail.com> References: <20241125-k1-i2c-master-v4-0-0f3d5886336b@gmail.com> In-Reply-To: <20241125-k1-i2c-master-v4-0-0f3d5886336b@gmail.com> To: Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Troy Mitchell Cc: linux-riscv@lists.infradead.org, linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Troy Mitchell X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1732517408; l=1763; i=TroyMitchell988@gmail.com; h=from:subject:message-id; bh=JIuSz4oWKf67hQAMbb92x53roAkcEc4sGNGVD/6wgRE=; b=7AKnC3n/NXKIor0CDHlsIleNql0hJw+/Ns+b9KSuHQuK1+3QSdyJGtBWAtWi30moAUJUmYYl4 7nGMO7/GdFfALIGz4PeEVqHmek19UCldsvMHBl2RjRCXS+lSJrwhJXe X-Developer-Key: i=TroyMitchell988@gmail.com; a=ed25519; pk=2spEMGBd/Wkpd36N1aD9KFWOk0aHrhVxZQt+jxLXVC0= From: Troy Mitchell The I2C of K1 supports fast-speed-mode and high-speed-mode, and supports FIFO transmission. Signed-off-by: Troy Mitchell --- .../devicetree/bindings/i2c/spacemit,k1-i2c.yaml | 53 ++++++++++++++++++= ++++ 1 file changed, 53 insertions(+) diff --git a/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml b/D= ocumentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml new file mode 100644 index 000000000000..e7cc62f39e28 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml @@ -0,0 +1,53 @@ +# 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: + maxItems: 1 + + 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 =3D "spacemit,k1-i2c"; + reg =3D <0xd4010800 0x38>; + interrupt-parent =3D <&plic>; + interrupts =3D <36>; + clocks =3D <&ccu 90>; + clock-frequency =3D <100000>; + }; + +... --=20 2.34.1