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QorIQ DPAA Queue Manager Portals Device Tree Binding
Copyright (C) 2008 - 2014 Freescale Semiconductor Inc.
CONTENTS
- QMan Portal
- QMan Pool Channel
- Example
QMan Portal Node
Portals are memory mapped interfaces to QMan that allow low-latency, lock-less
interaction by software running on processor cores, accelerators and network
interfaces with the QMan
PROPERTIES
- compatible
Usage: Required
Value type: <stringlist>
Definition: Must include "fsl,qman-portal-<hardware revision>"
May include "fsl,<SoC>-qman-portal" or "fsl,qman-portal"
- reg
Usage: Required
Value type: <prop-encoded-array>
Definition: Two regions. The first is the cache-enabled region of
the portal. The second is the cache-inhibited region of
the portal
- interrupts
Usage: Required
Value type: <prop-encoded-array>
Definition: Standard property
- fsl,liodn
Usage: See pamu.txt
Value type: <prop-encoded-array>
Definition: Two LIODN(s). DQRR LIODN (DLIODN) and Frame LIODN
(FLIODN)
- fsl,iommu-parent
Usage: See pamu.txt
Value type: <phandle>
Definition: PAMU property used for dynamic LIODN assignment
For additional details about the PAMU/LIODN binding(s) see pamu.txt
- fsl,qman-channel-id
Usage: Required
Value type: <u32>
Definition: The hardware index of the channel. This can also be
determined by dividing any of the channel's 8 work queue
IDs by 8
In addition to these properties the qman-portals should have sub-nodes to
represent the HW devices/portals that are connected to the software portal
described here
The currently supported sub-nodes are:
* fman0
* fman1
* pme
* crypto
These subnodes should have the following properties:
- fsl,liodn
Usage: See pamu.txt
Value type: <prop-encoded-array>
Definition: PAMU property used for static LIODN assignment
- fsl,iommu-parent
Usage: See pamu.txt
Value type: <phandle>
Definition: PAMU property used for dynamic LIODN assignment
- dev-handle
Usage: Required
Value type: <phandle>
Definition: The phandle to the particular hardware device that this
portal is connected to.
DPAA QMan Pool Channel Nodes
Pool Channels are defined with the following properties.
PROPERTIES
- compatible
Usage: Required
Value type: <stringlist>
Definition: Must include "fsl,qman-pool-channel"
May include "fsl,<SoC>-qman-pool-channel"
- fsl,qman-channel-id
Usage: Required
Value type: <u32>
Definition: The hardware index of the channel. This can also be
determined by dividing any of the channel's 8 work queue
IDs by 8
EXAMPLE
The example below shows a (P4080) QMan portals container/bus node with two portals
qman-portals@ff4200000 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "simple-bus";
ranges = <0 0xf 0xf4200000 0x200000>;
qman-portal@0 {
compatible = "fsl,qman-portal-1.2.0", "fsl,qman-portal";
reg = <0 0x4000>, <0x100000 0x1000>;
interrupts = <104 2 0 0>;
fsl,liodn = <1 2>;
fsl,qman-channel-id = <0>;
fman0 {
fsl,liodn = <0x21>;
dev-handle = <&fman0>;
};
fman1 {
fsl,liodn = <0xa1>;
dev-handle = <&fman1>;
};
crypto {
fsl,liodn = <0x41 0x66>;
dev-handle = <&crypto>;
};
};
qman-portal@4000 {
compatible = "fsl,qman-portal-1.2.0", "fsl,qman-portal";
reg = <0x4000 0x4000>, <0x101000 0x1000>;
interrupts = <106 2 0 0>;
fsl,liodn = <3 4>;
fsl,qman-channel-id = <1>;
fman0 {
fsl,liodn = <0x22>;
dev-handle = <&fman0>;
};
fman1 {
fsl,liodn = <0xa2>;
dev-handle = <&fman1>;
};
crypto {
fsl,liodn = <0x42 0x67>;
dev-handle = <&crypto>;
};
};
};
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