On 26/06/2024 11:45, Stanimir Varbanov wrote:
Adds DT bindings for bcm2712 MSI-X interrupt peripheral controller. Signed-off-by: Stanimir Varbanov <svarbanov@xxxxxxx> --- .../brcm,bcm2712-msix.yaml | 74 +++++++++++++++++++ 1 file changed, 74 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..ca610e4467d9 --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm2712-msix.yaml @@ -0,0 +1,74 @@ +# 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@xxxxxxx> + +description: > + This interrupt controller is used to provide intterupt 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: + items: + - enum: + - "brcm,bcm2712-mip-intc" + reg: + maxItems: 1 + description: > + Specifies the base physical address and size of the registers + + interrupt-controller: true + + "#interrupt-cells": + const: 2 + + msi-controller: true + + brcm,msi-base-spi: + $ref: /schemas/types.yaml#/definitions/uint32 + description: The SGI number that MSIs start. + + brcm,msi-num-spis: + $ref: /schemas/types.yaml#/definitions/uint32 + description: The number of SGIs for MSIs. + + brcm,msi-offset: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Shift the allocated MSIs up by N. + + brcm,msi-pci-addr: + $ref: /schemas/types.yaml#/definitions/uint64 + description: MSI-X message address. + +additionalProperties: false + +required: + - compatible + - reg + - interrupt-controller + - "#interrupt-cells" + - msi-controller
From the implementation of the driver, it looks like all properties are required, except for brcm,msi-offset which has a fallback to the value 0.
-- Florian
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