94 lines
2.7 KiB
YAML
94 lines
2.7 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/soc/fsl/fsl,qman.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: QorIQ DPAA Queue Manager
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maintainers:
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- Frank Li <Frank.Li@nxp.com>
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description:
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The Queue Manager is part of the Data-Path Acceleration Architecture (DPAA). QMan
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supports queuing and QoS scheduling of frames to CPUs, network interfaces and
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DPAA logic modules, maintains packet ordering within flows. Besides providing
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flow-level queuing, is also responsible for congestion management functions such
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as RED/WRED, congestion notifications and tail discards. This binding covers the
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CCSR space programming model
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properties:
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compatible:
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oneOf:
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- const: fsl,qman
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- items:
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- enum:
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- fsl,ls1043a-qman
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- fsl,ls1046a-qman
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- const: fsl,qman
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reg:
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items:
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- description: |
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Registers region within the CCSR address space
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The QMan revision information is located in the QMAN_IP_REV_1/2
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registers which are located at offsets 0xbf8 and 0xbfc
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interrupts:
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items:
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- description: The error interrupt
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fsl,qman-portals:
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$ref: /schemas/types.yaml#/definitions/phandle
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description: ref fsl,qman-port.yaml
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fsl,liodn:
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$ref: /schemas/types.yaml#/definitions/uint32-array
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description:
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See pamu.txt, PAMU property used for static LIODN assignment
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fsl,iommu-parent:
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$ref: /schemas/types.yaml#/definitions/phandle
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description:
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See pamu.txt, PAMU property used for dynamic LIODN assignment
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clocks:
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maxItems: 1
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description:
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Reference input clock. Its frequency is half of the platform clock
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memory-region:
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maxItems: 2
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description:
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List of phandles referencing the QMan private memory nodes (described
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below). The qman-fqd node must be first followed by qman-pfdr node.
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Only used on ARM Devices connected to a QMan instance via Direct Connect
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Portals (DCP) must link to the respective QMan instance.
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fsl,qman:
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$ref: /schemas/types.yaml#/definitions/uint32-array
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description:
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List of phandle and DCP index pairs, to the QMan instance
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to which this device is connected via the DCP
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required:
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- compatible
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- reg
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- interrupts
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.h>
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qman: qman@318000 {
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compatible = "fsl,qman";
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reg = <0x318000 0x1000>;
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interrupts = <16 IRQ_TYPE_EDGE_FALLING 1 3>;
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fsl,liodn = <0x16>;
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fsl,qman-portals = <&qportals>;
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memory-region = <&qman_fqd &qman_pfdr>;
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clocks = <&platform_pll 1>;
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};
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