On Thu, Apr 21, 2022 at 9:21 PM <nick.hawkins@xxxxxxx> wrote:
> + axi {
> + compatible = "simple-bus";
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges;
> + dma-ranges;
> +
> + ahb@c0000000 {
> + compatible = "simple-bus";
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges = <0x0 0xc0000000 0x30000000>;
I think you should add a "dma-ranges" property in the ahb node as well,
otherwise this would mean that none of the children are DMA capable,
when at the minimum the USB controllers require DMA.
Arnd
