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>

diff --git a/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi
index a25a3dc9b494148a59b971c3ec8d5f2974102d8c..cfd6c19822236590674c8d46ffafd11f3a4693a7 100644 (file)
--- 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 */