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Subject[PATCH v3 3/3] arm: dts: ls1021a: Enable I2C DMA support
Date
From: Esben Haabendal <eha@deif.com>

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

Signed-off-by: Esben Haabendal <eha@deif.com>
---
arch/arm/boot/dts/ls1021a.dtsi | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/arch/arm/boot/dts/ls1021a.dtsi b/arch/arm/boot/dts/ls1021a.dtsi
index c55d479971cc..1e5640701c65 100644
--- a/arch/arm/boot/dts/ls1021a.dtsi
+++ b/arch/arm/boot/dts/ls1021a.dtsi
@@ -363,6 +363,8 @@
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";
};

@@ -374,6 +376,8 @@
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";
};

@@ -385,6 +389,8 @@
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";
};

--
2.18.0
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