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