| Message ID | 20240102161839.702625-3-ezra.buehler@husqvarna.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ARM: dts: at91: gardena-smart-gateway: Use DMA for serial ports | expand |
On 02/01/2024 at 17:18, ezra@easyb.ch wrote: > From: Ezra Buehler <ezra.buehler@husqvarnagroup.com> > > 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 <michael.zimmermann@grandcentrix.net> > Signed-off-by: Michael Zimmermann <michael.zimmermann@grandcentrix.net> > Signed-off-by: Ezra Buehler <ezra.buehler@husqvarnagroup.com> Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com> Thanks! Best regards, Nicolas > --- > .../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 >
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