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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/devicetree/bindings/soc/fsl/qman-portals.txt | |
parent | Initial commit. (diff) | |
download | linux-430c2fc249ea5c0536abd21c23382884005c9093.tar.xz linux-430c2fc249ea5c0536abd21c23382884005c9093.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/devicetree/bindings/soc/fsl/qman-portals.txt')
-rw-r--r-- | Documentation/devicetree/bindings/soc/fsl/qman-portals.txt | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/soc/fsl/qman-portals.txt b/Documentation/devicetree/bindings/soc/fsl/qman-portals.txt new file mode 100644 index 000000000..5a34f3ab7 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/fsl/qman-portals.txt @@ -0,0 +1,134 @@ +QorIQ DPAA Queue Manager Portals Device Tree Binding + +Copyright (C) 2008 - 2014 Freescale Semiconductor Inc. + +CONTENTS + + - QMan Portal + - 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 + +- cell-index + 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. + +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>; + cell-index = <1>; + + fman0 { + fsl,liodn = <0x22>; + dev-handle = <&fman0>; + }; + fman1 { + fsl,liodn = <0xa2>; + dev-handle = <&fman1>; + }; + crypto { + fsl,liodn = <0x42 0x67>; + dev-handle = <&crypto>; + }; + }; + }; |