diff options
| author | Liu Gang <Gang.Liu@nxp.com> | 2016-09-08 05:31:44 +0300 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2016-09-09 09:04:21 +0300 |
| commit | e5f51a623a5d6dd24779e5136cf923611b032453 (patch) | |
| tree | 3605f752a70a46560bc36b8d0aab70c8ab105fff /arch/arm64/boot/dts/freescale | |
| parent | d5c8b122860580734dd712c08a4d6420cc927213 (diff) | |
| download | linux-e5f51a623a5d6dd24779e5136cf923611b032453.tar.xz | |
arm64: dts: ls2080a: Add 'dma-coherent' for ls2080a 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 ls2080a 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>
Diffstat (limited to 'arch/arm64/boot/dts/freescale')
| -rw-r--r-- | arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi index a25a3dc9b494..cfd6c1982223 100644 --- a/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi +++ b/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi @@ -588,6 +588,7 @@ #address-cells = <3>; #size-cells = <2>; device_type = "pci"; + dma-coherent; num-lanes = <4>; bus-range = <0x0 0xff>; ranges = <0x81000000 0x0 0x00000000 0x10 0x00010000 0x0 0x00010000 /* downstream I/O */ @@ -612,6 +613,7 @@ #address-cells = <3>; #size-cells = <2>; device_type = "pci"; + dma-coherent; num-lanes = <4>; bus-range = <0x0 0xff>; ranges = <0x81000000 0x0 0x00000000 0x12 0x00010000 0x0 0x00010000 /* downstream I/O */ @@ -636,6 +638,7 @@ #address-cells = <3>; #size-cells = <2>; device_type = "pci"; + dma-coherent; num-lanes = <8>; bus-range = <0x0 0xff>; ranges = <0x81000000 0x0 0x00000000 0x14 0x00010000 0x0 0x00010000 /* downstream I/O */ @@ -660,6 +663,7 @@ #address-cells = <3>; #size-cells = <2>; device_type = "pci"; + dma-coherent; num-lanes = <4>; bus-range = <0x0 0xff>; ranges = <0x81000000 0x0 0x00000000 0x16 0x00010000 0x0 0x00010000 /* downstream I/O */ |