@@ -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 */
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> --- arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi | 4 ++++ 1 file changed, 4 insertions(+)