Updates the QMan and BMan device tree bindings for reserved memory
nodes. This makes the reserved memory allocation compatible with
the shared-dma-pool usage.
Signed-off-by: Roy Pledge <roy.pledge@xxxxxxx>
---
Documentation/devicetree/bindings/soc/fsl/bman.txt | 12 +++++-----
Documentation/devicetree/bindings/soc/fsl/qman.txt | 26 ++++++++++++++++------
2 files changed, 26 insertions(+), 12 deletions(-)
diff --git a/Documentation/devicetree/bindings/soc/fsl/bman.txt b/Documentation/devicetree/bindings/soc/fsl/bman.txt
index 47ac834..48eed14 100644
--- a/Documentation/devicetree/bindings/soc/fsl/bman.txt
+++ b/Documentation/devicetree/bindings/soc/fsl/bman.txt
@@ -65,8 +65,8 @@ to the respective BMan instance
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"
@@ -75,7 +75,9 @@ PROPERTIES
- 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
@@ -100,10 +102,10 @@ The example below shows a BMan FBPR dynamic allocation memory node
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;
};
};
diff --git a/Documentation/devicetree/bindings/soc/fsl/qman.txt b/Documentation/devicetree/bindings/soc/fsl/qman.txt
index 556ebb8..ee96afd 100644
--- a/Documentation/devicetree/bindings/soc/fsl/qman.txt
+++ b/Documentation/devicetree/bindings/soc/fsl/qman.txt
@@ -60,6 +60,12 @@ are located at offsets 0xbf8 and 0xbfc
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
@@ -74,7 +80,9 @@ 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 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"
@@ -83,7 +91,9 @@ PROPERTIES
- 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"
@@ -92,7 +102,9 @@ PROPERTIES
- 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
@@ -117,16 +129,16 @@ The example below shows a QMan FQD and a PFDR dynamic allocation memory nodes
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;
};
};
--
2.7.4
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