Linux: uboot driver for TCA9539 and TCA9546

Hi,
Please refer this and let me know if it helps? You need to port these driver to u-boot.
www.ti.com/.../slvc564

Regards,
Somnath

Hi,
Can you please get back on this issue and let us know if you need any further help?

Regards,
Somnath

Hi Somnath,

I have added driver for both TCA9546 and TCA9539 in u-boot and dts entries as well.
currently, the I2C switch(TCA9546) is showing on proper bus but I2C expander(TCA9539) is showing on bus -1.

u-boot logs,
=> i2c bus
Bus 0: i2c@48070000 (active 0)
58: tps659038@58, offset len 1, flags 0
20: gpio@20, offset len 1, flags 0
21: gpio@21, offset len 0, flags 0
70: i2cswitch@70, offset len 1, flags 0

Bus -1: i2c@1
74: tca9539@74, offset len 1, flags 0

Can you help me on this?

Thanks,
Arun

Hi,
Can you send the changes in dts file, after you added support for TCA9539 and TCA9546?

Regards,
Somnath

dts entry for switch and expander,

i2cswitch@70 {
compatible = "ti,tca9546";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x70>;

i2c@1 {
#address-cells = <1>;
#size-cells = <0>;
reg = <1>;

tca9539@74 {
compatible = "ti,tca9539";
reg = <0x74>;
gpio-controller;
#gpio-cells = <2>;
};
};
};

Please let me know if anything wrong in dts entries

Thanks,
Arun

Hi,
Please refer the file "arch/arm/dts/dra7-evm.dts".
You will see the example of how devices connected to i2c1 bus.

&i2c1 {
status = "okay";
clock-frequency = <400000>;

tps659038: tps659038@58 {
compatible = "ti, tps659038";
reg = <0x58>;
.......
.......
}

pcf_lcd: gpio@20 {
compatible = "nxp,pcf8575";
reg = <0x20>;
.......
.......
}
}

You will need to add your devices here, if you haven't already done that.
Let em know if you need any other help.

Regards,
Somnath

Hi,
We haven't heard back from you, I'm assuming you were able to resolve your issue.
If not, just post a reply below (or create a new thread if the thread has locked due to time-out).

Regards,
Somnath