Re: [PATCH v1 2/2] ARM: dts: at91: gardena-smart-gateway: Use DMA for USART3
From: Nicolas Ferre <nicolas.ferre@microchip.com>
Date: 2024-01-03 13:50:04
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On 02/01/2024 at 17:18, ezra@easyb.ch wrote:
From: Ezra Buehler <redacted> The AT91SAM9G25-based GARDENA smart Gateway uses USART3 (ttyS1) to communicate (over PPP, at 115200 baud) with the radio module. We have been experiencing packet loss and seeing errors on the ppp0 interface. Enabling DMA for the serial interface resolves the issues. Co-Developed-by: Michael Zimmermann <redacted> Signed-off-by: Michael Zimmermann <redacted> Signed-off-by: Ezra Buehler <redacted>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com> Thanks! Best regards, Nicolas
quoted hunk ↗ jump to hunk
--- .../boot/dts/microchip/at91sam9g25-gardena-smart-gateway.dts | 2 ++ 1 file changed, 2 insertions(+)diff --git a/arch/arm/boot/dts/microchip/at91sam9g25-gardena-smart-gateway.dts b/arch/arm/boot/dts/microchip/at91sam9g25-gardena-smart-gateway.dts index 92f2c05c873f..af70eb8a3a02 100644 --- a/arch/arm/boot/dts/microchip/at91sam9g25-gardena-smart-gateway.dts +++ b/arch/arm/boot/dts/microchip/at91sam9g25-gardena-smart-gateway.dts@@ -121,6 +121,8 @@ &usart2 { }; &usart3 { + atmel,use-dma-rx; + atmel,use-dma-tx; status = "okay"; pinctrl-0 = <&pinctrl_usart3 --2.39.2
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