> You know about
> devm_platform_get_and_ioremap_resource()
> usage.
>  Maybe that's the way to go. Because as of today there is no way to pass
> position of irq resource.
> 
> But I expect it will come in near future.

Has been tried, has been nacked:

http://patchwork.ozlabs.org/project/linux-i2c/patch/20200518155304.28639-3-zhengdejin5@gmail.com/