arm64: Juno: Add support for the PCIe host bridge on Juno R1

Juno R1 board sports a functional PCIe host bridge that is
compliant with the SBSA standard found [1] here. With the right
firmware that initialises the XpressRICH3 controller one can
use the generic Host Bridge driver to use the PCIe hardware.

Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
[1] http://infocenter.arm.com/help/topic/com.arm.doc.den0029a/

diff --git a/arch/arm64/boot/dts/arm/juno-r1.dts b/arch/arm64/boot/dts/arm/juno-r1.dts
index c62751153a4fc528202b4d645fc930f851aa2bc1..a25964d26bda65fd7ffc493606cf628fcb73171b 100644 (file)
--- a/arch/arm64/boot/dts/arm/juno-r1.dts
+++ b/arch/arm64/boot/dts/arm/juno-r1.dts
@@ -109,6 +109,26 @@
 
        #include "juno-base.dtsi"
 
+       pcie-controller@40000000 {
+               compatible = "arm,juno-r1-pcie", "plda,xpressrich3-axi", "pci-host-ecam-generic";
+               device_type = "pci";
+               reg = <0 0x40000000 0 0x10000000>;      /* ECAM config space */
+               bus-range = <0 255>;
+               linux,pci-domain = <0>;
+               #address-cells = <3>;
+               #size-cells = <2>;
+               dma-coherent;
+               ranges = <0x01000000 0x00 0x5f800000 0x00 0x5f800000 0x0 0x00800000>,
+                        <0x02000000 0x00 0x50000000 0x00 0x50000000 0x0 0x08000000>,
+                        <0x42000000 0x40 0x00000000 0x40 0x00000000 0x1 0x00000000>;
+               #interrupt-cells = <1>;
+               interrupt-map-mask = <0 0 0 7>;
+               interrupt-map = <0 0 0 1 &gic 0 0 0 136 4>,
+                               <0 0 0 2 &gic 0 0 0 137 4>,
+                               <0 0 0 3 &gic 0 0 0 138 4>,
+                               <0 0 0 4 &gic 0 0 0 139 4>;
+               msi-parent = <&v2m_0>;
+       };
 };
 
 &memtimer {