The i2c of K1 supports fast-speed-mode and high-speed-mode, and supports FIFO transmission. Signed-off-by: Troy Mitchell <TroyMitchell988@xxxxxxxxx> --- .../bindings/i2c/spacemit,k1-i2c.yaml | 59 +++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml 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 000000000000..c1460ec2b323 --- /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 <troymitchell988@xxxxxxxxx> + +properties: + compatible: + const: spacemit,k1-i2c + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + + clock-frequency: + description: + Desired I2C bus clock frequency in Hz. As only fast and high-speed + modes are supported by hardware, possible values are 100000 and 400000. + enum: [100000, 400000] + default: 100000 + + fifo-disable: + type: boolean + description: + Whether to disable FIFO. If FIFO is turned on, it will be interrupted + only when the FIFO depth is reached, which can reduce the frequency + of interruption. + default: false + +unevaluatedProperties: false + +required: + - compatible + - reg + - interrupts + - clocks + +examples: + - | + i2c0: i2c@d4010800 { + compatible = "spacemit,k1-i2c"; + reg = <0x0 0xd4010800 0x0 0x38>; + interrupt-parent = <&plic>; + interrupts = <36>; + clocks = <&ccu 90>; + clock-frequency = <100000>; + }; + +... -- 2.34.1
