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Commit f8ed1d9b authored by Liu Gang's avatar Liu Gang Committed by Shawn Guo
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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: default avatarLiu Gang <Gang.Liu@nxp.com>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent 2f082b13

arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi

+3 −0
Original line number Diff line number Diff line
@@ -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 */