BMan Private Memory Node
BMan requires a contiguous range of physical memory used for the backing store
-for BMan Free Buffer Proxy Records (FBPR). This memory is reserved/allocated as a
-node under the /reserved-memory node
+for BMan Free Buffer Proxy Records (FBPR). This memory is reserved/allocated as
+a node under the /reserved-memory node.
The BMan FBPR memory node must be named "bman-fbpr"
- compatible
Usage: required
Value type: <stringlist>
- Definition: Must inclide "fsl,bman-fbpr"
+ Definition: PPC platforms: Must include "fsl,bman-fbpr"
+ ARM platforms: Must include "shared-dma-pool"
+ as well as the "no-map" property
The following constraints are relevant to the FBPR private memory:
- The size must be 2^(size + 1), with size = 11..33. That is 4 KiB to
ranges;
bman_fbpr: bman-fbpr {
- compatible = "fsl,bman-fbpr";
- alloc-ranges = <0 0 0x10 0>;
+ compatible = "shared-mem-pool";
size = <0 0x1000000>;
alignment = <0 0x1000000>;
+ no-map;
};
};
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
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 nodes under the /reserved-memory node
+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"
- compatible
Usage: required
Value type: <stringlist>
- Definition: Must inclide "fsl,qman-fqd"
+ 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"
- compatible
Usage: required
Value type: <stringlist>
- Definition: Must inclide "fsl,qman-pfdr"
+ 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
ranges;
qman_fqd: qman-fqd {
- compatible = "fsl,qman-fqd";
- alloc-ranges = <0 0 0x10 0>;
+ compatible = "shared-dma-pool";
size = <0 0x400000>;
alignment = <0 0x400000>;
+ no-map;
};
qman_pfdr: qman-pfdr {
- compatible = "fsl,qman-pfdr";
- alloc-ranges = <0 0 0x10 0>;
+ compatible = "shared-dma-pool";
size = <0 0x2000000>;
alignment = <0 0x2000000>;
+ no-map;
};
};