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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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76fe9ac17f
The I2C of K1 supports fast-speed-mode and high-speed-mode, and supports FIFO transmission. Signed-off-by: Troy Mitchell <troymitchell988@gmail.com> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Andi Shyti <andi.shyti@kernel.org> Link: https://lore.kernel.org/r/20250319-k1-i2c-master-v8-1-013e2df2b78d@gmail.com
62 lines
1.2 KiB
YAML
62 lines
1.2 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/i2c/spacemit,k1-i2c.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: I2C controller embedded in SpacemiT's K1 SoC
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maintainers:
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- Troy Mitchell <troymitchell988@gmail.com>
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properties:
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compatible:
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const: spacemit,k1-i2c
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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clocks:
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items:
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- description: I2C Functional Clock
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- description: APB Bus Clock
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clock-names:
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items:
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- const: func
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- const: bus
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clock-frequency:
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description: |
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K1 support three different modes which running different frequencies
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standard speed mode: up to 100000 (100Hz)
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fast speed mode : up to 400000 (400Hz)
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high speed mode : up to 3300000 (3.3Mhz)
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default: 400000
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maximum: 3300000
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required:
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- compatible
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- reg
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- interrupts
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- clocks
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unevaluatedProperties: false
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examples:
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- |
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i2c@d4010800 {
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compatible = "spacemit,k1-i2c";
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reg = <0xd4010800 0x38>;
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interrupt-parent = <&plic>;
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interrupts = <36>;
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clocks =<&ccu 32>, <&ccu 84>;
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clock-names = "func", "bus";
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clock-frequency = <100000>;
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};
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...
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