I am trying to bring up PCA9546(switch) and PCA9539(I2C expander) in uboot, so that i can bring up some peripherals connected via I2C switch(PCA9546)-->I2C expander(PCA9539).
I have added dts entry like this,
&i2c1 {
.
.
.
i2cswitch@70 {
compatible = "nxp,pca9546";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x70>;
i2c@1 {
#address-cells = <1>;
#size-cells = <0>;
reg = <1>;
pca9539@74 {
compatible = "nxp,pca9539";
reg = <0x74>;
gpio-controller;
#gpio-cells = <2>;
};
};
};
};
I2C expander(PCA9539) is connected to channel 1 of switch(PCA9546) but in uboot i2c logs, I2C expander 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: pca9539@74, offset len 1, flags 0
Any help will be highly appreciated.
Thanks,
Arun
