From: Esben Haabendal <eha@deif.com>
Date: Thu, 9 Aug 2018 12:32:07 +0000 (+0200)
Subject: ARM: dts: ls1021a: Enable I2C DMA support
X-Git-Tag: v5.4-rc1~2318^2~18^2~41
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cc07fd3c45c1e589f1f2bea4ac69e5d4ecb77e9d;p=platform%2Fkernel%2Flinux-rpi.git

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: Esben Haabendal <eha@deif.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
---

diff --git a/arch/arm/boot/dts/ls1021a.dtsi b/arch/arm/boot/dts/ls1021a.dtsi
index f184905..f70025c 100644
--- a/arch/arm/boot/dts/ls1021a.dtsi
+++ b/arch/arm/boot/dts/ls1021a.dtsi
@@ -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";
 		};