From: Josua Mayer <josua@solid-run.com>
To: Nishanth Menon <nm@ti.com>, Vignesh Raghavendra <vigneshr@ti.com>,
Tero Kristo <kristo@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, Josua Mayer <josua@solid-run.com>
Subject: [PATCH] arm64: dts: ti: k3-am642-hummingboard-t: correct rs485 rts polarity
Date: Sat, 04 May 2024 13:35:54 +0200 [thread overview]
Message-ID: <20240504-ti-rs485-rts-v1-1-e88ef1c96f34@solid-run.com> (raw)
The RS485 transceiver RE (Receiver enable) and DE (Driver enable) are
shorted and connected to both RTS/CTS of the SoC UART.
RE is active-low, DE is active-high.
Remove the "rs485-rts-active-low" flag to match RTS polarity with DE,
and fix communication in both transmit and receive directions.
Fixes: d60483faf914 ("arm64: dts: add description for solidrun am642 som and evaluation board")
Signed-off-by: Josua Mayer <josua@solid-run.com>
---
arch/arm64/boot/dts/ti/k3-am642-hummingboard-t.dts | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/arm64/boot/dts/ti/k3-am642-hummingboard-t.dts b/arch/arm64/boot/dts/ti/k3-am642-hummingboard-t.dts
index 234d76e4e944..5b5e9eeec5ac 100644
--- a/arch/arm64/boot/dts/ti/k3-am642-hummingboard-t.dts
+++ b/arch/arm64/boot/dts/ti/k3-am642-hummingboard-t.dts
@@ -282,7 +282,6 @@ &main_uart3 {
pinctrl-names = "default";
pinctrl-0 = <&main_uart3_default_pins>;
uart-has-rtscts;
- rs485-rts-active-low;
linux,rs485-enabled-at-boot-time;
status = "okay";
};
---
base-commit: 4cece764965020c22cff7665b18a012006359095
change-id: 20240504-ti-rs485-rts-e08a68eac841
Sincerely,
--
Josua Mayer <josua@solid-run.com>
next reply other threads:[~2024-05-04 11:36 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-04 11:35 Josua Mayer [this message]
2024-06-13 7:45 ` Vignesh Raghavendra
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240504-ti-rs485-rts-v1-1-e88ef1c96f34@solid-run.com \
--to=josua@solid-run.com \
--cc=conor+dt@kernel.org \
--cc=devicetree@vger.kernel.org \
--cc=kristo@kernel.org \
--cc=krzysztof.kozlowski+dt@linaro.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=nm@ti.com \
--cc=robh@kernel.org \
--cc=vigneshr@ti.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®