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ARM: dts: ls1021a: Enable I2C DMA support

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

Signed-off-by: Esben Haabendal <eha@deif.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Esben Haabendal 2018-08-09 14:32:07 +02:00 committed by Shawn Guo
parent 475ecf2ef8
commit cc07fd3c45
1 changed files with 6 additions and 0 deletions
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6
arch/arm/boot/dts/ls1021a.dtsi
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@ -364,6 +364,8 @@ i2c0: i2c@2180000 {
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 @@ i2c1: i2c@2190000 {
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 @@ i2c2: i2c@21a0000 {
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";
};