Dear NXP Support team,
I would like to know how to enable the control of IO Expander PCA6416A on i.MX6ULL custom board.
I've tried to modify imx6ul-14x14-evk.dtsi, adding pca6416 node to &i2c2 as below.
pca6416: pca6416@20 {
compatible = "nxp,pca6416";
reg = <0x20>;
status = "okay";
};
When I check with "i2cdetect -y 1" command, it shows as "UU" at register address 0x20.
But, when it is UU, it means the register has been already used or taken by other device.
I wanted to make it as "20", not "UU", so that I can access to the register via i2c communication.
So I've change the status to "disabled". But this time, it showed nothing.
Please guide me how I should change DTS to make the register showing as "20" so that I can access to the register.
OR Please give me any advice to enable control of IO Expander PCA6416A via i2c communication.
*I've attached some parts of i.MX6ULL custom board's schematic to help explaining the issue.
Thank you.
