47 lines
1.3 KiB
YAML
47 lines
1.3 KiB
YAML
# Copyright (c) 2017 I-SENSE group of ICCS
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# SPDX-License-Identifier: Apache-2.0
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description: STM32 I2C V2 controller
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compatible: "st,stm32-i2c-v2"
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include: [i2c-controller.yaml, pinctrl-device.yaml]
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properties:
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reg:
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required: true
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interrupts:
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required: true
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pinctrl-0:
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required: true
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pinctrl-names:
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required: true
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timings:
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type: array
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required: false
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description: |
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An optional table of pre-computed i2c timing values with the
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matching clock configuration.
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Precise timings values for a given Hardware can be pre-computed
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with a tool like STM32CubeMX or directly from I2C_TIMINGR register
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description.
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Because timing value is valid for a given I2C peripheral clock
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frequency and target I2C bus clock, each timing value must be
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provided with the matching configuration.
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The resulting table entries should look like <periph_clock
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clock-frequency timing>
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For example timings could be defined as
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timings = <64000000 I2C_BITRATE_STANDARD 0x10707DBC>,
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<64000000 I2C_BITRATE_FAST 0x00603D56>,
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<56000000 I2C_BITRATE_STANDARD 0x10606DA4>,
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<56000000 I2C_BITRATE_FAST 0x00501D63>;
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