st,stm32-i2c-v2

Vendor: STMicroelectronics

Description

These nodes are “i2c” bus nodes.

STM32 I2C V2 controller

Properties

Properties not inherited from the base binding file.

Name

Type

Details

pinctrl-0

phandles

 
GPIO pin configuration for serial signals (SDA, SCL).  We expect
that the phandles will reference pinctrl nodes.

For example the I2C1 would be
   pinctrl-0 = <&i2c1_sda_pb11 &i2c1_scl_pb10>;

timings

array

 
An optional table of pre-computed i2c timing values with the
matching clock configuration.

Precise timings values for a given Hardware can be pre-computed
with a tool like STM32CubeMX or directly from I2C_TIMINGR register
description.

Because timing value is valid for a given I2C peripheral clock
frequency and target I2C bus clock, each timing value must be
provided with the matching configuration.

The resulting table entries should look like <periph_clock
clock-frequency timing>

For example timings could be defined as

    timings = <64000000 I2C_BITRATE_STANDARD 0x10707DBC>,
              <64000000 I2C_BITRATE_FAST 0x00603D56>,
              <56000000 I2C_BITRATE_STANDARD 0x10606DA4>,
              <56000000 I2C_BITRATE_FAST 0x00501D63>;

clock-frequency

int

 
Initial clock frequency in Hz