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

Commit Message

Stanimir Varbanov Oct. 14, 2024, 1:07 p.m. UTC

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

Signed-off-by: Stanimir Varbanov <[e-mail]>
---
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

Comments

Rob Herring (Arm) Oct. 15, 2024, 8:11 p.m. UTC | #1

On Mon, 14 Oct 2024 16:07:00 +0300, Stanimir Varbanov wrote:
> Adds DT bindings for bcm2712 MSI-X interrupt peripheral controller.
> 
> Signed-off-by: Stanimir Varbanov <[e-mail]>
> ---
> 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
> 

Reviewed-by: Rob Herring (Arm) <[e-mail]>

Patch

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 <[e-mail]>
+
+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>;
+        };
+    };