Enable onewire on digi imx6ul

[avni]

I want to use DS18B20 temperature sensor on mca pin on digi imx6ul

mca pin is MCA_IO6

device tree file is :

onewire@0 {
compatible = "w1-gpio";
pinctrl-names = "default";
status="okay";
gpios = <&mca_gpio 6 1>;
linux,open-drain;
}

This configuration gives reset and presence signal on gpio no other data is received

[Sanket_Parekh]

Hi @avni 

I hope you are doing well

Please verify the parameters for the Pad Control Register according to the sensor, i.e. ODE bit for open drain, DSE bit for drive strength, SRE bit for slew rate, etc...

The description of the Pad Control Register can be found in the reference manual IMX6ULRM.

One can refer to the w1-gpio.yaml and w1.txt for the device tree configuration for onewire.

Thanks & Regards

Sanket Parekh