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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 <mpfj@newflow.co.uk>
Message-Id: <20221130140547.295859-3-mpfj@newflow.co.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Mark Jackson 2022-11-30 14:05:44 +00:00 committed by Tony Lindgren
parent bd08103e93
commit af5ec6ab2e
1 changed files with 10 additions and 0 deletions
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10
arch/arm/boot/dts/am335x-nano.dts
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@ -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";
};