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armv8: fsl-lsch3: Rewrite comment for stream IDs

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LS2080a, LS1088a and LS2088a SOCs are based on Chassis-3 and shared
same stream-id partitioning. This patch rewords the definition to
support all these SOCs.

Also have changes in description about iommu-map property updates
in PCI node.

Signed-off-by: Bharat Bhushan <Bharat.Bhushan@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
This commit is contained in:
Bharat Bhushan 2017-03-22 12:06:26 +05:30 committed by York Sun
parent 08c5130d28
commit a4954f9467
1 changed files with 9 additions and 6 deletions
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15
arch/arm/include/asm/arch-fsl-layerscape/stream_id_lsch3.h
View file

@ -8,11 +8,11 @@
#define __FSL_STREAM_ID_H
/*
* Stream IDs on ls2080a devices are not hardwired and are
* programmed by sw. There are a limited number of stream IDs
* available, and the partitioning of them is scenario dependent.
* This header defines the partitioning between legacy, PCI,
* and DPAA2 devices.
* Stream IDs on NXP Chassis-3 (for example ls2080a, ls1088a, ls2088a)
* devices are not hardwired and are programmed by sw. There are a limited
* number of stream IDs available, and the partitioning of them is scenario
* dependent. This header defines the partitioning between legacy,
* PCI, and DPAA2 devices.
*
* This partitioning can be customized in this file depending
* on the specific hardware config:
@ -29,6 +29,9 @@
* -set a msi-map entry in the PEXn controller node in the
* device tree (see Documentation/devicetree/bindings/pci/pci-msi.txt
* for more info on the msi-map definition)
* -set a iommu-map entry in the PEXn controller node in the
* device tree (see Documentation/devicetree/bindings/pci/pci-iommu.txt
* for more info on the iommu-map definition)
*
* -DPAA2
* -u-boot will allocate a range of stream IDs to be used by the Management
@ -36,7 +39,7 @@
* -the MC is responsible for allocating and setting up 'isolation context
* IDs (ICIDs) based on the allocated stream IDs for all DPAA2 devices.
*
* On ls2080a SoCs stream IDs are programmed in AMQ registers (32-bits) for
* On Chasis-3 SoCs stream IDs are programmed in AMQ registers (32-bits) for
* each of the different bus masters. The relationship between
* the AMQ registers and stream IDs is defined in the table below:
* AMQ bit streamID bit