How do I set-up i2c node in dts file?


I’m using Hikey board.

How do I set-up i2c in dts?
I’d like use I2C0 and connect slave device.
Please some one explain in dts, it is correct under the text?


soc {
i2c0: i2c@f7100000 {
#address-cells = <0x1>;
#size-cells = <0x0>;
status = “ok”;
compatible = "hisilicon,touch
reg = <0x27>;
touch,ven-gpio = <&gpio2 0 0>
touch,firm-gpio = <&gpio2 2 0
touch,irq-gpio = <&gpio2 4 0>


You can use whatever i2c you want to use based on the connection that u have.

Just add your slave node under the i2c(whatever the i2c that u want).

it will work.


You can use i2c0 or i2c1 as they are exposed in the low-speed expansion header.

Just add your node under one of them.

The node that you specified in your question seems ok to me


Problem was dtb file.
I’m using kernel 4.9 but I used kernel 4.4 format. Becasuse of that i2c node wasn’t created.
After modified to 4.9 format, I2c node was created.
Thank you very much.