From: Troy Mitchell <troymitchell988@xxxxxxxxx> The I2C of K1 supports fast-speed-mode and high-speed-mode, and supports FIFO transmission. Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx> Signed-off-by: Troy Mitchell <TroyMitchell988@xxxxxxxxx> --- .../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 <troymitchell988@xxxxxxxxx> + +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>; + }; + +... -- 2.34.1
