linux-kernel - [PATCH v2 RESEND 2/5] ARM: dts: am335x-nano: Enable RS485 mode for UART3 & 4

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20221130140547.295859-3-mpfj@newflow.co.uk>
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