1 files changed, 34 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/302-dts-0088-arm64-dts-ls1028a-fix-dwc-pci-over-smmu.patch b/target/linux/layerscape/patches-5.4/302-dts-0088-arm64-dts-ls1028a-fix-dwc-pci-over-smmu.patch
new file mode 100644
index 0000000000..80ab53eef9
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/302-dts-0088-arm64-dts-ls1028a-fix-dwc-pci-over-smmu.patch
@@ -0,0 +1,34 @@
+From 127b30b66c3b48ee717ed7335987334e8dc769b5 Mon Sep 17 00:00:00 2001
+From: Laurentiu Tudor <laurentiu.tudor@nxp.com>
+Date: Tue, 1 Oct 2019 13:47:11 +0300
+Subject: [PATCH] arm64: dts: ls1028a: fix dwc pci over smmu
+
+In order for the dwc controller to work with SMMU it needs the
+bootloader to fixup it's iommu-map property. In the current
+implementation to bootloader will not perform the fixup if the
+property is not already in the device tree with dummy fields.
+Add it to fix DWC PCI over SMMU.
+
+Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
+---
+ arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
++++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
+@@ -689,6 +689,7 @@
+ 			#size-cells = <2>;
+ 			device_type = "pci";
+ 			dma-coherent;
++			iommu-map = <0 &smmu 0 1>; /* Fixed-up by bootloader */
+ 			bus-range = <0x0 0xff>;
+ 			ranges = <0x81000000 0x0 0x00000000 0x80 0x00010000 0x0 0x00010000   /* downstream I/O */
+ 				  0x82000000 0x0 0x40000000 0x80 0x40000000 0x0 0x40000000>; /* non-prefetchable memory */
+@@ -714,6 +715,7 @@
+ 			#size-cells = <2>;
+ 			device_type = "pci";
+ 			dma-coherent;
++			iommu-map = <0 &smmu 0 1>; /* Fixed-up by bootloader */
+ 			bus-range = <0x0 0xff>;
+ 			ranges = <0x81000000 0x0 0x00000000 0x88 0x00010000 0x0 0x00010000   /* downstream I/O */
+ 				  0x82000000 0x0 0x40000000 0x88 0x40000000 0x0 0x40000000>; /* non-prefetchable memory */