> From: Peter Chen
> Sent: Wednesday, February 15, 2017 7:02 PM
> On Wed, Feb 15, 2017 at 02:21:55AM +0000, Yoshihiro Shimoda wrote:
< snip >
> > If my idea A), ehci0 will have companion = <&ohci>;
> > If my idea B), no need to add any property.
> > What do you think?
> > Anyway, I will start to study DT programming :)
> From my point, idea A is better. It seems you have similar idea when you
> tried Dual-role framework before. 
>  https://patchwork.kernel.org/patch/9169745/
Thank you for the comment!
Yes, I remember this. So, I will make patches using idea A.
> Best Regards,
> Peter Chen