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arm64: dts: ls1043a: Add 'dma-coherent' for ls1043a 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>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Liu Gang 2016-06-07 14:55:46 +08:00 committed by Shawn Guo
parent 2f082b13f2
commit f8ed1d9b0f
1 changed files with 3 additions and 0 deletions
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3
arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi
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@ -482,6 +482,7 @@
#address-cells = <3>;
#size-cells = <2>;
device_type = "pci";
dma-coherent;
num-lanes = <4>;
bus-range = <0x0 0xff>;
ranges = <0x81000000 0x0 0x00000000 0x40 0x00010000 0x0 0x00010000 /* downstream I/O */
@ -506,6 +507,7 @@
#address-cells = <3>;
#size-cells = <2>;
device_type = "pci";
dma-coherent;
num-lanes = <2>;
bus-range = <0x0 0xff>;
ranges = <0x81000000 0x0 0x00000000 0x48 0x00010000 0x0 0x00010000 /* downstream I/O */
@ -530,6 +532,7 @@
#address-cells = <3>;
#size-cells = <2>;
device_type = "pci";
dma-coherent;
num-lanes = <2>;
bus-range = <0x0 0xff>;
ranges = <0x81000000 0x0 0x00000000 0x50 0x00010000 0x0 0x00010000 /* downstream I/O */