soc/fsl/fsl%2Cqman-fqd.yaml

1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/soc/fsl/fsl,qman-fqd.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: QMan Private Memory Nodes
10   - Frank Li <Frank.Li@nxp.com>
13   QMan requires two contiguous range of physical memory used for the backing store
15   This memory is reserved/allocated as a node under the /reserved-memory node.
17   BMan requires a contiguous range of physical memory used for the backing store
18   for BMan Free Buffer Proxy Records (FBPR). This memory is reserved/allocated as
19   a node under the /reserved-memory node.
21   The QMan FQD memory node must be named "qman-fqd"
22   The QMan PFDR memory node must be named "qman-pfdr"
23   The BMan FBPR memory node must be named "bman-fbpr"
25   The following constraints are relevant to the FQD and PFDR private memory:
26     - The size must be 2^(size + 1), with size = 11..29. That is 4 KiB to
28     - The alignment must be a muliptle of the memory size
32   specific board (e.g. number of MAC(s) pinned-out, number of offline/host command
36   For additional details about reserved memory regions see
37   reserved-memory/reserved-memory.yaml in dtschema project.
41     pattern: '^(qman-fqd|qman-pfdr|bman-fbpr)+$'
45       - fsl,qman-fqd
46       - fsl,qman-pfdr
47       - fsl,bman-fbpr
50   - compatible
53   - $ref: reserved-memory.yaml
58   - |
59     reserved-memory {
60         #address-cells = <2>;
61         #size-cells = <2>;
63         qman-fqd {
64             compatible = "shared-dma-pool";
67             no-map;