linux-kernel - [PATCH 3/3] ARM: dts: at91: sama5d2 Xplained: use DMA for UART3

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Message-ID: <20161201104949.23985-3-nicolas.ferre@atmel.com>
Date:   Thu, 1 Dec 2016 11:49:49 +0100
From:   Nicolas Ferre <nicolas.ferre@...el.com>
To:     Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
        <linux-arm-kernel@...ts.infradead.org>
CC:     Boris BREZILLON <boris.brezillon@...e-electrons.com>,
        Ludovic Desroches <ludovic.desroches@...el.com>,
        <linux-kernel@...r.kernel.org>,
        Nicolas Ferre <nicolas.ferre@...el.com>
Subject: [PATCH 3/3] ARM: dts: at91: sama5d2 Xplained: use DMA for UART3

Use DMA for UART3 as we have enough channels and to show how to
specify DMA use with serial nodes.

Signed-off-by: Nicolas Ferre <nicolas.ferre@...el.com>
---
 arch/arm/boot/dts/at91-sama5d2_xplained.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/at91-sama5d2_xplained.dts b/arch/arm/boot/dts/at91-sama5d2_xplained.dts
index 0b9a59d5fdac..e2d5cb3fecb1 100644
--- a/arch/arm/boot/dts/at91-sama5d2_xplained.dts
+++ b/arch/arm/boot/dts/at91-sama5d2_xplained.dts
@@ -256,6 +256,8 @@
 			};
 
 			uart3: serial@...08000 {
+				atmel,use-dma-rx;
+				atmel,use-dma-tx;
 				pinctrl-names = "default";
 				pinctrl-0 = <&pinctrl_uart3_default>;
 				status = "okay";
-- 
2.9.0