target/linux/layerscape/patches-5.4/302-dts-0088-arm64-dts-ls1028a-fix-dwc-pci-over-smmu.patch

   1 From 127b30b66c3b48ee717ed7335987334e8dc769b5 Mon Sep 17 00:00:00 2001
   2 From: Laurentiu Tudor <laurentiu.tudor@nxp.com>
   3 Date: Tue, 1 Oct 2019 13:47:11 +0300
   4 Subject: [PATCH] arm64: dts: ls1028a: fix dwc pci over smmu
   5
   6 In order for the dwc controller to work with SMMU it needs the
   7 bootloader to fixup it's iommu-map property. In the current
   8 implementation to bootloader will not perform the fixup if the
   9 property is not already in the device tree with dummy fields.
  10 Add it to fix DWC PCI over SMMU.
  11
  12 Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
  13 ---
  14  arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi | 2 ++
  15  1 file changed, 2 insertions(+)
  16
  17 --- a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
  18 +++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
  19 @@ -689,6 +689,7 @@
  20                         #size-cells = <2>;
  21                         device_type = "pci";
  22                         dma-coherent;
  23 +                       iommu-map = <0 &smmu 0 1>; /* Fixed-up by bootloader */
  24                         bus-range = <0x0 0xff>;
  25                         ranges = <0x81000000 0x0 0x00000000 0x80 0x00010000 0x0 0x00010000   /* downstream I/O */
  26                                   0x82000000 0x0 0x40000000 0x80 0x40000000 0x0 0x40000000>; /* non-prefetchable memory */
  27 @@ -714,6 +715,7 @@
  28                         #size-cells = <2>;
  29                         device_type = "pci";
  30                         dma-coherent;
  31 +                       iommu-map = <0 &smmu 0 1>; /* Fixed-up by bootloader */
  32                         bus-range = <0x0 0xff>;
  33                         ranges = <0x81000000 0x0 0x00000000 0x88 0x00010000 0x0 0x00010000   /* downstream I/O */
  34                                   0x82000000 0x0 0x40000000 0x88 0x40000000 0x0 0x40000000>; /* non-prefetchable memory */