Messages in this thread Patch in this message | | | From | Mark Jackson <> | Subject | [PATCH v2 RESEND 2/5] ARM: dts: am335x-nano: Enable RS485 mode for UART3 & 4 | Date | Wed, 30 Nov 2022 14:05:44 +0000 |
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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> --- 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 @@ &uart2 { &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"; }; -- 2.34.1
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