On Tue, Sep 24, 2019 at 08:12:38PM +0200, Nicolas Saenz Julienne wrote:
> qoriq-mc's dpmacs DMA configuration is inherited from their parent node,
> which acts a bus in this regard. So far it maked all devices as
> dma-coherent but no dma-ranges recommendation is made.
>
> The truth is that the underlying interconnect has DMA constraints, so
> add an empty dma-ranges in qoriq-mc's node in order for DT's DMA
> configuration code to get the DMA constraints from it.
>
> Signed-off-by: Nicolas Saenz Julienne <[email protected]>
Updated subject prefix as 'arm64: dts: ...', and applied the patch.
Shawn
> ---
>
> arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi | 1 +
> arch/arm64/boot/dts/freescale/fsl-ls208xa.dtsi | 1 +
> arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi | 1 +
> 3 files changed, 3 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi
> index c676d0771762..f0d0b6145b72 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi
> +++ b/arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi
> @@ -698,6 +698,7 @@
> <0x00000000 0x08340000 0 0x40000>; /* MC control reg */
> msi-parent = <&its>;
> iommu-map = <0 &smmu 0 0>; /* This is fixed-up by u-boot */
> + dma-ranges;
> dma-coherent;
> #address-cells = <3>;
> #size-cells = <1>;
> diff --git a/arch/arm64/boot/dts/freescale/fsl-ls208xa.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls208xa.dtsi
> index 7a0be8eaa84a..fd6036b7865c 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-ls208xa.dtsi
> +++ b/arch/arm64/boot/dts/freescale/fsl-ls208xa.dtsi
> @@ -340,6 +340,7 @@
> <0x00000000 0x08340000 0 0x40000>; /* MC control reg */
> msi-parent = <&its>;
> iommu-map = <0 &smmu 0 0>; /* This is fixed-up by u-boot */
> + dma-ranges;
> dma-coherent;
> #address-cells = <3>;
> #size-cells = <1>;
> diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi b/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
> index 408e0ecdce6a..3735bb139cb2 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
> +++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
> @@ -868,6 +868,7 @@
> msi-parent = <&its>;
> /* iommu-map property is fixed up by u-boot */
> iommu-map = <0 &smmu 0 0>;
> + dma-ranges;
> dma-coherent;
> #address-cells = <3>;
> #size-cells = <1>;
> --
> 2.23.0
>