From: Reto Schneider reto.schneider@husqvarnagroup.com
[ Upstream commit e8c192011c920517e5578d51c7aff0ecadd25de3 ]
The radio module asserts CTS when its RX buffer has 10 bytes left. Putting just 8 instead of 16 bytes into the UART1 TX buffer on the Linux side ensures to not overflow the RX buffer on the radio module side.
Signed-off-by: Reto Schneider reto.schneider@husqvarnagroup.com Signed-off-by: Stefan Roese sr@denx.de Cc: Paul Burton paul.burton@mips.com Signed-off-by: Paul Burton paulburton@kernel.org Cc: linux-mips@vger.kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- arch/mips/boot/dts/ralink/gardena_smart_gateway_mt7688.dts | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/mips/boot/dts/ralink/gardena_smart_gateway_mt7688.dts b/arch/mips/boot/dts/ralink/gardena_smart_gateway_mt7688.dts index aa5caaa311047..aad9a8a8669b4 100644 --- a/arch/mips/boot/dts/ralink/gardena_smart_gateway_mt7688.dts +++ b/arch/mips/boot/dts/ralink/gardena_smart_gateway_mt7688.dts @@ -177,6 +177,9 @@ pinctrl-names = "default"; pinctrl-0 = <&pinmux_i2s_gpio>; /* GPIO0..3 */
+ fifo-size = <8>; + tx-threshold = <8>; + rts-gpios = <&gpio 1 GPIO_ACTIVE_LOW>; cts-gpios = <&gpio 2 GPIO_ACTIVE_LOW>; };