Re: [PATCH v5 1/7] dt-bindings: connector: Add mikrobus-connector

[Ayush Singh]

> > But here you can have subnodes, no? These could then be just
> > enumerated as usual.
> >
> > &mikrobus_board {
> > 	mikrobus_gpio: gpio {
> > 		gpio-controller;
> > 		#gpio-cells = <1>;
> > 	};
> >
> > 	spi {
> > 		cs-gpios = <&mikrobus_gpio 1>;
> >
> > 		spi@0 {
> > 			compatible = "mydevice";
> > 			reg = <0>;
> > 		};
> > 	};
> > };

Hi, I am now working on an approach for mikroBUS based on the apprach 
described here: [1]


I am thinking of the gpio-controller approach you seem to have used 
here. So I wanted to inquire if there already exists a gpio-controller 
driver that can create a proxy controller that forwards stuff to the 
underlying actual controller. So something like the following:


&mikrobus_gpio: gpio {

    gpio-controller;

    #gpio-cells = <2>;

    gpios = <&gpio1 0>, <&gpi2 1>;

};


spi {

    cs-gpios = <&mikrobus_gpio 1 GPIO_ACTIVE_HIGH>;

};


There does exist gpio0-virtio, but that seems to be for vm context.


[1]: 
https://lore.kernel.org/linux-arm-kernel/20240702164403.29067-1-afd@xxxxxx/


Ayush Singh