From: Liu Gang Date: Thu, 8 Sep 2016 02:31:44 +0000 (+0800) Subject: arm64: dts: ls2080a: Add 'dma-coherent' for ls2080a PCI nodes X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e5f51a623a5d6dd24779e5136cf923611b032453;p=linux.git 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 Signed-off-by: Shawn Guo --- diff --git a/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls2080a.dtsi index a25a3dc9b4941..cfd6c19822236 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 */