diff mbox

ARM: dts: at91: Enable DMA on sama5d4_xplained console

Message ID 20170119004658.32750-1-alexandre.belloni@free-electrons.com (mailing list archive)
State New, archived
Headers show

Commit Message

Alexandre Belloni Jan. 19, 2017, 12:46 a.m. UTC 
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(+)

Comments

Nicolas Ferre Jan. 19, 2017, 3:23 p.m. UTC | #1 
Le 18/01/2017 à 17:46, Alexandre Belloni a écrit :
> 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>

Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>

Thanks,
Regards.

> ---
>  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";
>  			};
>  
>
diff mbox

Patch

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";
 			};