bindings: PCI: layerscape: Add 'dma-coherent' property

Browse source

Add 'dma-coherent' description for PCI nodes.

The 'dma-coherent' indicates that the hardware IP block can ensure
the coherency of the data transferred from/to the IP block. This
can avoid the software cache flush/invalid actions, and improve
the performance significantly.

The PCI IP block of ls1043a has this capability, so adding
this feature to improve the PCI performance.

Signed-off-by: Liu Gang <Gang.Liu@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

...

This commit is contained in:

Liu Gang 2016-06-07 14:55:45 +08:00 • committed by Shawn Guo

parent bf26225fc6

commit 2f082b13f2

1 changed files with 4 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

4

Documentation/devicetree/bindings/pci/layerscape-pci.txt

View file