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Diffstat (limited to 'Documentation/devicetree/bindings/soc/fsl/qman.txt')
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diff --git a/Documentation/devicetree/bindings/soc/fsl/qman.txt b/Documentation/devicetree/bindings/soc/fsl/qman.txt deleted file mode 100644 index ee96afd2af72..000000000000 --- a/Documentation/devicetree/bindings/soc/fsl/qman.txt +++ /dev/null @@ -1,187 +0,0 @@ -QorIQ DPAA Queue Manager Device Tree Binding - -Copyright (C) 2008 - 2014 Freescale Semiconductor Inc. - -CONTENTS - - - QMan Node - - QMan Private Memory Nodes - - Example - -QMan Node - -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 - Usage: Required - Value type: <stringlist> - Definition: Must include "fsl,qman" - May include "fsl,<SoC>-qman" - -- reg - Usage: Required - Value type: <prop-encoded-array> - Definition: 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 - Usage: Required - Value type: <prop-encoded-array> - Definition: Standard property. The error interrupt - -- fsl,qman-portals - Usage: Required - Value type: <phandle> - Definition: Phandle to this QMan instance's portals - -- 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 - - For additional details about the PAMU/LIODN binding(s) see pamu.txt - -- clocks - Usage: See clock-bindings.txt and qoriq-clock.txt - Value type: <prop-encoded-array> - Definition: Reference input clock. Its frequency is half of the - platform clock -- memory-regions - Usage: Required for ARM - Value type: <phandle array> - Definition: 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 - Usage: Required - Value type: <prop-encoded-array> - Description: List of phandle and DCP index pairs, to the QMan instance - to which this device is connected via the DCP - -QMan Private Memory Nodes - -QMan requires two contiguous range of physical memory used for the backing store -for QMan Frame Queue Descriptor (FQD) and Packed Frame Descriptor Record (PFDR). -This memory is reserved/allocated as a node under the /reserved-memory node. - -For additional details about reserved memory regions see reserved-memory.txt - -The QMan FQD memory node must be named "qman-fqd" - -PROPERTIES - -- compatible - Usage: required - Value type: <stringlist> - Definition: PPC platforms: Must include "fsl,qman-fqd" - ARM platforms: Must include "shared-dma-pool" - as well as the "no-map" property - -The QMan PFDR memory node must be named "qman-pfdr" - -PROPERTIES - -- compatible - Usage: required - Value type: <stringlist> - Definition: PPC platforms: Must include "fsl,qman-pfdr" - ARM platforms: Must include "shared-dma-pool" - as well as the "no-map" property - -The following constraints are relevant to the FQD and PFDR private memory: - - The size must be 2^(size + 1), with size = 11..29. That is 4 KiB to - 1 GiB - - The alignment must be a muliptle of the memory size - -The size of the FQD and PFDP must be chosen by observing the hardware features -configured via the Reset Configuration Word (RCW) and that are relevant to a -specific board (e.g. number of MAC(s) pinned-out, number of offline/host command -FMan ports, etc.). The size configured in the DT must reflect the hardware -capabilities and not the specific needs of an application - -For additional details about reserved memory regions see reserved-memory.txt - -EXAMPLE - -The example below shows a QMan FQD and a PFDR dynamic allocation memory nodes - - reserved-memory { - #address-cells = <2>; - #size-cells = <2>; - ranges; - - qman_fqd: qman-fqd { - compatible = "shared-dma-pool"; - size = <0 0x400000>; - alignment = <0 0x400000>; - no-map; - }; - qman_pfdr: qman-pfdr { - compatible = "shared-dma-pool"; - size = <0 0x2000000>; - alignment = <0 0x2000000>; - no-map; - }; - }; - -The example below shows a (P4080) QMan CCSR-space node - - qportals: qman-portals@ff4200000 { - ... - }; - - clockgen: global-utilities@e1000 { - ... - sysclk: sysclk { - ... - }; - ... - platform_pll: platform-pll@c00 { - #clock-cells = <1>; - reg = <0xc00 0x4>; - compatible = "fsl,qoriq-platform-pll-1.0"; - clocks = <&sysclk>; - clock-output-names = "platform-pll", "platform-pll-div2"; - }; - ... - }; - - crypto@300000 { - ... - fsl,qman = <&qman, 2>; - ... - }; - - qman: qman@318000 { - compatible = "fsl,qman"; - reg = <0x318000 0x1000>; - interrupts = <16 2 1 3> - fsl,liodn = <0x16>; - fsl,qman-portals = <&qportals>; - memory-region = <&qman_fqd &qman_pfdr>; - clocks = <&platform_pll 1>; - }; - - fman@400000 { - ... - fsl,qman = <&qman, 0>; - ... - }; |