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Commit cc07fd3c authored by Esben Haabendal's avatar Esben Haabendal Committed by Shawn Guo
Browse files

ARM: dts: ls1021a: Enable I2C DMA support 



Gives substantial performance improvement for transfers larger than 16
bytes (DMA_THRESHOLD).  Smaller transfers are unaffected.

Signed-off-by: default avatarEsben Haabendal <eha@deif.com>
Acked-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent 475ecf2e

arch/arm/boot/dts/ls1021a.dtsi

+6 −0
Original line number Diff line number Diff line
@@ -364,6 +364,8 @@ 
			interrupts = <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>;

			clock-names = "i2c";

			clocks = <&clockgen 4 1>;

			dma-names = "tx", "rx";

			dmas = <&edma0 1 39>, <&edma0 1 38>;

			status = "disabled";

		};
@@ -375,6 +377,8 @@ 
			interrupts = <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;

			clock-names = "i2c";

			clocks = <&clockgen 4 1>;

			dma-names = "tx", "rx";

			dmas = <&edma0 1 37>, <&edma0 1 36>;

			status = "disabled";

		};
@@ -386,6 +390,8 @@ 
			interrupts = <GIC_SPI 90 IRQ_TYPE_LEVEL_HIGH>;

			clock-names = "i2c";

			clocks = <&clockgen 4 1>;

			dma-names = "tx", "rx";

			dmas = <&edma0 1 35>, <&edma0 1 34>;

			status = "disabled";

		};