Linux: How to config dts while there are two vin port all connect to one sub-device

Hi Nikhil,

At our custom board, for test purpose, we need to test two video input port(vin-3a & vin-4b) and they all connect to the same subdevice 
I try below setting, still only can see one video device => /dev/video1, which combine with vin-3a, is there any other setting could let two video input port combine with the same subdevice?

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

adv7611: adv7611@4c {
compatible = "adi,adv7611";
reg = <0x4c>;

#address-cells = <1>;
#size-cells = <0>;

//reset-gpios = <&ioexp 0 GPIO_ACTIVE_LOW>;
//hpd-gpios = <&ioexp 2 GPIO_ACTIVE_HIGH>;

port@1 {
adv7611_out: endpoint@0 {
remote-endpoint = <&vin4b>;
//hsync-active = <1>;
//vsync-active = <1>;
pclk-sample = <1>;
bus-width = <8>;
channels = <0>;

pixel-mux;
};

adv7611_out2: endpoint@1 {
remote-endpoint = <&vin3a>;
//hsync-active = <1>;
//vsync-active = <1>;
pclk-sample = <1>;
bus-width = <8>;
channels = <0>;

pixel-mux;
};
};
};
};


video_in4B: &vin4b {
status = "okay";
endpoint@0 {
slave-mode;
remote-endpoint = <&adv7611_out>;
};
};


video_in3A: &vin3a {
status = "okay";
endpoint@0 {
slave-mode;
remote-endpoint = <&adv7611_out2>;
};
};