From: Nicolas Ferre <nicolas.ferre@microchip.com>
Date: Tue, 10 Oct 2017 10:09:49 +0000 (+0300)
Subject: ARM: dts: at91: at91sam9x5ek: use DMA for USART0
X-Git-Tag: v4.15-rc1~75^2~22^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=854106bc625a73b251ef7de2d5b49847d53041c2;p=thirdparty%2Flinux.git

ARM: dts: at91: at91sam9x5ek: use DMA for USART0

Use DMA for USART0 (which is used as ttyS1) as we have enough channels and to
show how to specify DMA use with serial nodes.

Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
---

diff --git a/arch/arm/boot/dts/at91sam9x5ek.dtsi b/arch/arm/boot/dts/at91sam9x5ek.dtsi
index 9d2bbc41a7b08..a85eb51e6aa8d 100644
--- a/arch/arm/boot/dts/at91sam9x5ek.dtsi
+++ b/arch/arm/boot/dts/at91sam9x5ek.dtsi
@@ -50,6 +50,8 @@
 			};
 
 			usart0: serial@f801c000 {
+				atmel,use-dma-rx;
+				atmel,use-dma-tx;
 				status = "okay";
 			};