302-dts-0088-arm64-dts-ls1028a-fix-dwc-pci-over-smmu.patch

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
@@ -687,6 +687,7 @@
 			#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 */
@@ -712,6 +713,7 @@
 			#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 */