To support MSI functionality using Synopsys DesignWare PCIe controller
based MSI controller with ECAM driver, add "snps,dw-pcie-ecam-msi
compatible binding which uses provided SPIs to support MSI functionality.
Signed-off-by: Mayank Rana <quic_mrana@xxxxxxxxxxx>
---
.../devicetree/bindings/pci/host-generic-pci.yaml | 57 ++++++++++++++++++++++
1 file changed, 57 insertions(+)
diff --git a/Documentation/devicetree/bindings/pci/host-generic-pci.yaml b/Documentation/devicetree/bindings/pci/host-generic-pci.yaml
index 9c714fa..9e860d5 100644
--- a/Documentation/devicetree/bindings/pci/host-generic-pci.yaml
+++ b/Documentation/devicetree/bindings/pci/host-generic-pci.yaml
@@ -81,6 +81,12 @@ properties:
- marvell,armada8k-pcie-ecam
- socionext,synquacer-pcie-ecam
- const: snps,dw-pcie-ecam
+ - description: |
+ Firmware is configuring Synopsys DesignWare PCIe controller in RC mode with
+ ECAM compatible fashion. To use MSI controller of Synopsys DesignWare PCIe
+ controller for MSI functionality, this compatible is used.
+ items:
+ - const: snps,dw-pcie-ecam-msi
- description:
CAM or ECAM compliant PCI host controllers without any quirks
enum:
@@ -116,6 +122,20 @@ properties:
A phandle to the node that controls power or/and system resource or interface to firmware
to enable ECAM compliant PCIe root complex.
+ interrupts:
+ description:
+ DWC PCIe Root Port/Complex specific MSI interrupt/IRQs.
+ minItems: 1
+ maxItems: 8
+
+ interrupt-names:
+ description:
+ MSI interrupt names
+ minItems: 1
+ maxItems: 8
+ items:
+ pattern: '^msi[0-9]+$'
+
required:
- compatible
- reg
@@ -146,11 +166,22 @@ allOf:
reg:
maxItems: 1
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: snps,dw-pcie-ecam-msi
+ then:
+ required:
+ - interrupts
+ - interrupt-names
+
unevaluatedProperties: false
examples:
- |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
bus {
#address-cells = <2>;
#size-cells = <2>;
@@ -180,5 +211,31 @@ examples:
interrupt-map-mask = <0xf800 0x0 0x0 0x7>;
power-domains = <&scmi5_pd 0>;
};
+
+ pcie0: pci@1c00000 {
+ compatible = "snps,dw-pcie-ecam-msi";
+ reg = <0x4 0x00000000 0 0x10000000>;
+ device_type = "pci";
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges = <0x02000000 0x0 0x40100000 0x0 0x40100000 0x0 0x1ff00000>,
+ <0x43000000 0x4 0x10100000 0x4 0x10100000 0x0 0x40000000>;
+ bus-range = <0x00 0xff>;
+ dma-coherent;
+ linux,pci-domain = <0>;
+ power-domains = <&scmi5_pd 0>;
+ iommu-map = <0x0 &pcie_smmu 0x0000 0x1>,
+ <0x100 &pcie_smmu 0x0001 0x1>;
+
+ interrupts = <GIC_SPI 307 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 308 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 309 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 312 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 313 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 314 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 374 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 375 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "msi0", "msi1", "msi2", "msi3", "msi4", "msi5", "msi6", "msi7";
+ };
};
...
--
2.7.4
