[PATCH v3 01/11] dt-bindings: interrupt-controller: Add bcm2712 MSI-X DT bindings

Stanimir Varbanov
2024-10-14T14:33:26Z

Adds DT bindings for bcm2712 MSI-X interrupt peripheral controller.

Signed-off-by: Stanimir Varbanov <svarbanov@suse.de>
---
v2 -> v3:
- dropped '>' from the description entry (Rob)
- dropped interrupt-controller and interrupt-cells properties (Rob)
- dropped msi-controller and use 'unevaluatedProperties' (Rob)
- use const: 0 in msi-cells (Rob)
- dropped msi-ranges property (Rob)
- re-introduce brcm,msi-offset private property,
which looks unavoidable at that time

.../brcm,bcm2712-msix.yaml | 60 +++++++++++++++++++
1 file changed, 60 insertions(+)
create mode 100644 Documentation/devicetree/bindings/interrupt-controller/brcm,bcm2712-msix.yaml

diff --git a/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm2712-msix.yaml b/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm2712-msix.yaml
new file mode 100644
index 000000000000..c84614663b5d
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm2712-msix.yaml
@@ -0,0 +1,60 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/interrupt-controller/brcm,bcm2712-msix.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom bcm2712 MSI-X Interrupt Peripheral support
+
+maintainers:
+ - Stanimir Varbanov <svarbanov@suse.de>
+
+description:
+ This interrupt controller is used to provide interrupt vectors to the
+ generic interrupt controller (GIC) on bcm2712. It will be used as
+ external MSI-X controller for PCIe root complex.
+
+allOf:
+ - $ref: /schemas/interrupt-controller/msi-controller.yaml#
+
+properties:
+ compatible:
+ const: brcm,bcm2712-mip
+
+ reg:
+ items:
+ - description: Base register address
+ - description: PCIe message address
+
+ "#msi-cells":
+ const: 0
+
+ brcm,msi-offset:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: Shift the allocated MSI's.
+
+unevaluatedProperties: false
+
+required:
+ - compatible
+ - reg
+ - msi-controller
+ - msi-ranges
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ axi {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ msi-controller@1000130000 {
+ compatible = "brcm,bcm2712-mip";
+ reg = <0x10 0x00130000 0x00 0xc0>,
+ <0xff 0xfffff000 0x00 0x1000>;
+ msi-controller;
+ #msi-cells = <0>;
+ msi-ranges = <&gicv2 GIC_SPI 128 IRQ_TYPE_EDGE_RISING 64>;
+ };
+ };
--
2.43.0