how to configure I2C SCL to 400KHZ

[cotway]

I changed bitrate (100000 to 400000)，but SCL can't up to 400khz.now I don't know where need to configure.

[Dhruvit · Accepted solution]

Hi @cotway,

I hope you are doing well.

One should change the value of clock frequency into the respective device tree on the i2c node at a particular address.

I've shared one example for reference, please take a look at it.

i2c@70038000 { /* HS-I2C on i.MX51 */
       compatible = "fsl,imx51-i2c", "fsl,imx21-i2c";
       reg = <0x70038000 0x4000>;
       interrupts = <64>;
       clock-frequency = <400000>;
};

Thanks & Regards,
Dhruvit Vasavada