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author | Emil Medve <Emilian.Medve@freescale.com> | 2014-11-05 15:18:52 (GMT) |
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committer | Scott Wood <scottwood@freescale.com> | 2014-11-13 05:53:41 (GMT) |
commit | 5f3af4008bfcb388a3193fd871e1b2e94ba4b09c (patch) | |
tree | aaeb99079e4a1cf0d85a7838e2f3fa087f1f8386 /Documentation/devicetree/bindings/soc/fsl | |
parent | 31ceb157f294843563330658c3ad6e3b5a1c4fe2 (diff) | |
download | linux-5f3af4008bfcb388a3193fd871e1b2e94ba4b09c.tar.xz |
dt/bindings: Introduce the FSL QorIQ DPAA BMan portal(s)
Portals are memory mapped interfaces to BMan that allow low-latency,
lock-less interaction by software running on processor cores,
accelerators and network interfaces with the BMan
Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com>
Change-Id: I6d245ffc14ba3d0e91d403ac7c3b91b75a9e6a95
Signed-off-by: Scott Wood <scottwood@freescale.com>
Diffstat (limited to 'Documentation/devicetree/bindings/soc/fsl')
-rw-r--r-- | Documentation/devicetree/bindings/soc/fsl/bman-portals.txt | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/soc/fsl/bman-portals.txt b/Documentation/devicetree/bindings/soc/fsl/bman-portals.txt new file mode 100644 index 0000000..2a00e14 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/fsl/bman-portals.txt @@ -0,0 +1,56 @@ +QorIQ DPAA Buffer Manager Portals Device Tree Binding + +Copyright (C) 2008 - 2014 Freescale Semiconductor Inc. + +CONTENTS + + - BMan Portal + - Example + +BMan Portal Node + +Portals are memory mapped interfaces to BMan that allow low-latency, lock-less +interaction by software running on processor cores, accelerators and network +interfaces with the BMan + +PROPERTIES + +- compatible + Usage: Required + Value type: <stringlist> + Definition: Must include "fsl,bman-portal-<hardware revision>" + May include "fsl,<SoC>-bman-portal" or "fsl,bman-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 + +EXAMPLE + +The example below shows a (P4080) BMan portals container/bus node with two portals + + bman-portals@ff4000000 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "simple-bus"; + ranges = <0 0xf 0xf4000000 0x200000>; + + bman-portal@0 { + compatible = "fsl,bman-portal-1.0.0", "fsl,bman-portal"; + reg = <0x0 0x4000>, <0x100000 0x1000>; + interrupts = <105 2 0 0>; + }; + bman-portal@4000 { + compatible = "fsl,bman-portal-1.0.0", "fsl,bman-portal"; + reg = <0x4000 0x4000>, <0x101000 0x1000>; + interrupts = <107 2 0 0>; + }; + }; |