Re: [PATCH 1/4] arm64: dts: imx8mp: switch usb controller to flattened model

From: Xu Yang

Date: Thu Apr 23 2026 - 06:34:37 EST


On Tue, Apr 21, 2026 at 11:45:32PM -0400, Frank Li wrote:
> On Tue, Apr 21, 2026 at 06:55:00PM +0800, Xu Yang wrote:
> > Switch to use flattened model for all USB controllers. To enable USB
> > controllers with restricted DMA access range to work correctly, add a
> > pseudo simple-bus to constrain the dma address.
>
> This should not "pseudo", and bus is physical existed, which limited dma
> range since it transparent to SW, which may not mention in spec.

OK. Will remove the word "pseudo" in v2.

>
> >
> > Also reorder USB-related nodes.
>
> this need new patch to just do reorder.

OK. Will add a separate patch.

Thanks,
Xu Yang