RE: [PATCH 3/3] arm64: dts: imx95: add SMMU support for NETC

Wei Fang
2025-05-29T02:43:56Z

> > diff --git a/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts
> b/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts
> > index 9f4d0899a94d..e9a5fb36f5d0 100644
> > --- a/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts
> > +++ b/arch/arm64/boot/dts/freescale/imx95-15x15-evk.dts
> > @@ -494,6 +494,14 @@ &netc_bus0 {
> > <0x60 &its 0x66 0x1>, //ENETC1 VF1
> > <0x80 &its 0x64 0x1>, //ENETC2 PF
> > <0xc0 &its 0x67 0x1>;
> > + iommu-map = <0x0 &smmu 0x20 0x1>,
> > + <0x10 &smmu 0x21 0x1>,
> > + <0x20 &smmu 0x22 0x1>,
> > + <0x40 &smmu 0x23 0x1>,
> > + <0x50 &smmu 0x25 0x1>,
> > + <0x60 &smmu 0x26 0x1>,
> > + <0x80 &smmu 0x24 0x1>,
> > + <0xc0 &smmu 0x27 0x1>;
>
> Do you need iommu-map-mask to mask bus id in case difference probe order
> with pcie node?
>
No, the bus id is fixed for NETC devices.