diff options
| author | Liu Gang <Gang.Liu@nxp.com> | 2016-06-07 09:55:46 +0300 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2016-06-16 03:43:10 +0300 |
| commit | f8ed1d9b0f6758db7e2b65b6e88f8a923a3a22ab (patch) | |
| tree | 3ac59ba597183f3ec38f1c23383411c627170823 /arch | |
| parent | 2f082b13f2ef89548d5629d9bbf8795ed246a0ec (diff) | |
| download | linux-f8ed1d9b0f6758db7e2b65b6e88f8a923a3a22ab.tar.xz | |
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi index 2c6832a12990..c451b814ac74 100644 --- a/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi +++ b/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi @@ -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 */ |