[PATCH] ARM: dts: at91: Enable DMA on sama5d4_xplained console

From	Alexandre Belloni <alexandre.belloni@free-electrons.com>
Newsgroups	linux.kernel
Subject	[PATCH] ARM: dts: at91: Enable DMA on sama5d4_xplained console
Date	2017-01-19 01:50 +0100
Message-ID	<t195o-2Ne-9@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Enable DMA on usart3 to get a more reliable console. This is especially
useful for automation and kernelci were a kernel with PROVE_LOCKING enabled
is quite susceptible to character loss, resulting in tests failure.

Cc: stable <stable@vger.kernel.org> #v4.1+
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
---
 arch/arm/boot/dts/at91-sama5d4_xplained.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/at91-sama5d4_xplained.dts b/arch/arm/boot/dts/at91-sama5d4_xplained.dts
index ed7fce297738..44d1171c7fc0 100644
--- a/arch/arm/boot/dts/at91-sama5d4_xplained.dts
+++ b/arch/arm/boot/dts/at91-sama5d4_xplained.dts
@@ -110,6 +110,8 @@
 			};
 
 			usart3: serial@fc00c000 {
+				atmel,use-dma-rx;
+				atmel,use-dma-tx;
 				status = "okay";
 			};
 
-- 
2.11.0

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[PATCH] ARM: dts: at91: Enable DMA on sama5d4_xplained console Alexandre Belloni <alexandre.belloni@free-electrons.com> - 2017-01-19 01:50 +0100
  Re: [PATCH] ARM: dts: at91: Enable DMA on sama5d4_xplained console Nicolas Ferre <nicolas.ferre@atmel.com> - 2017-01-19 16:30 +0100

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