Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 48 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/pci/altera-pcie.txt b/Documentation/devicetree/bindings/pci/altera-pcie.txt
new file mode 100644
index 000000000..6c396f17c
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/altera-pcie.txt
@@ -0,0 +1,48 @@
+* Altera PCIe controller
+
+Required properties:
+- compatible :	should contain "altr,pcie-root-port-1.0"
+- reg:		a list of physical base address and length for TXS and CRA.
+- reg-names:	must include the following entries:
+		"Txs": TX slave port region
+		"Cra": Control register access region
+- interrupts:	specifies the interrupt source of the parent interrupt
+		controller.  The format of the interrupt specifier depends
+		on the parent interrupt controller.
+- device_type:	must be "pci"
+- #address-cells:	set to <3>
+- #size-cells:		set to <2>
+- #interrupt-cells:	set to <1>
+- ranges:	describes the translation of addresses for root ports and
+		standard PCI regions.
+- interrupt-map-mask and interrupt-map: standard PCI properties to define the
+		mapping of the PCIe interface to interrupt numbers.
+
+Optional properties:
+- msi-parent:	Link to the hardware entity that serves as the MSI controller
+		for this PCIe controller.
+- bus-range:	PCI bus numbers covered
+
+Example
+	pcie_0: pcie@c00000000 {
+		compatible = "altr,pcie-root-port-1.0";
+		reg = <0xc0000000 0x20000000>,
+			<0xff220000 0x00004000>;
+		reg-names = "Txs", "Cra";
+		interrupt-parent = <&hps_0_arm_gic_0>;
+		interrupts = <0 40 4>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		bus-range = <0x0 0xFF>;
+		device_type = "pci";
+		msi-parent = <&msi_to_gic_gen_0>;
+		#address-cells = <3>;
+		#size-cells = <2>;
+		interrupt-map-mask = <0 0 0 7>;
+		interrupt-map = <0 0 0 1 &pcie_0 1>,
+			            <0 0 0 2 &pcie_0 2>,
+			            <0 0 0 3 &pcie_0 3>,
+			            <0 0 0 4 &pcie_0 4>;
+		ranges = <0x82000000 0x00000000 0x00000000 0xc0000000 0x00000000 0x10000000
+			  0x82000000 0x00000000 0x10000000 0xd0000000 0x00000000 0x10000000>;
+	};