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>
&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";
};