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Date: Wed, 30 Nov 2022 14:05:44 +0000
From: Mark Jackson <mpfj@...flow.co.uk>
To: Benoît Cousson <bcousson@...libre.com>,
Tony Lindgren <tony@...mide.com>,
Mark Jackson <mpfj@...flow.co.uk>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
linux-omap@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v2 RESEND 2/5] 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@...flow.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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