From af5ec6ab2e6c920a568ba09f961c3d429741c5c9 Mon Sep 17 00:00:00 2001 From: Mark Jackson Date: Wed, 30 Nov 2022 14:05:44 +0000 Subject: [PATCH] ARM: dts: am335x-nano: Enable RS485 mode for UART3 & 4 UART3 & 4 are both RS485 ports. So we need to configure and enable this by default. Signed-off-by: Mark Jackson Message-Id: <20221130140547.295859-3-mpfj@newflow.co.uk> Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/am335x-nano.dts | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm/boot/dts/am335x-nano.dts b/arch/arm/boot/dts/am335x-nano.dts index 05cbfe24f778..cecc2afaeff4 100644 --- a/arch/arm/boot/dts/am335x-nano.dts +++ b/arch/arm/boot/dts/am335x-nano.dts @@ -187,12 +187,22 @@ &uart3 { pinctrl-names = "default"; pinctrl-0 = <&uart3_pins>; + rts-gpio = <&gpio2 17 GPIO_ACTIVE_HIGH>; + rs485-rts-active-high; + rs485-rx-during-tx; + rs485-rts-delay = <1 1>; + linux,rs485-enabled-at-boot-time; status = "okay"; }; &uart4 { pinctrl-names = "default"; pinctrl-0 = <&uart4_pins>; + rts-gpio = <&gpio0 9 GPIO_ACTIVE_HIGH>; + rs485-rts-active-high; + rs485-rx-during-tx; + rs485-rts-delay = <1 1>; + linux,rs485-enabled-at-boot-time; status = "okay"; }; -- 2.11.0