[PATCH 03/13] ARM: imx27: Retrieve the SYSCTRL base address from devicetree

[Fabio Estevam]

Hi Arnd,

On Wed, Sep 16, 2020 at 6:30 PM Arnd Bergmann <arnd at arndb.de> wrote:

> While this is nicer in theory, I don't like the way it breaks compatibility
> with old dtb files that are lacking the device node.

Good point. Let me access this SYSCTRL region via the CCM register space then.

In the current devicetree CCM region already overlaps with the SYSCTRL region.

This way we don't break dt compatibility.

> What is the status of dtb stability otherwise on imx? My impression
> was that it is actually quite good about not breaking this way.

Yes, we try to keep dt compatibility as much as possible.

Thanks