From: Rasmus Villemoes <linux@rasmusvillemoes.dk>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jirislaby@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>
Cc: devicetree@vger.kernel.org,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Lukas Wunner <lukas@wunner.de>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Rob Herring <robh@kernel.org>,
linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org
Subject: [PATCH 1/2] dt-bindings: serial: rs485: add rs485-mux-gpios binding
Date: Mon, 20 Nov 2023 16:10:54 +0100 [thread overview]
Message-ID: <20231120151056.148450-2-linux@rasmusvillemoes.dk> (raw)
In-Reply-To: <20231120151056.148450-1-linux@rasmusvillemoes.dk>
Some boards are capable of both rs232 and rs485, and control which
external terminals are active via a gpio-controlled mux. Allow
describing that gpio in DT so that the kernel can transparently handle
the proper setting when the uart is switched between rs232 and rs485
modes.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
---
Documentation/devicetree/bindings/serial/rs485.yaml | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/Documentation/devicetree/bindings/serial/rs485.yaml b/Documentation/devicetree/bindings/serial/rs485.yaml
index 9418fd66a8e9..e8136c7d22ed 100644
--- a/Documentation/devicetree/bindings/serial/rs485.yaml
+++ b/Documentation/devicetree/bindings/serial/rs485.yaml
@@ -61,6 +61,11 @@ properties:
the active state enables RX during TX.
maxItems: 1
+ rs485-mux-gpios:
+ description: GPIO pin to control muxing of the SOC signals to the RS485
+ transceiver.
+ maxItems: 1
+
additionalProperties: true
...
--
2.40.1.1.g1c60b9335d
next prev parent reply other threads:[~2023-11-20 15:11 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-20 15:10 [PATCH 0/2] serial: add rs485-mux-gpio dt binding and support Rasmus Villemoes
2023-11-20 15:10 ` Rasmus Villemoes [this message]
2023-11-21 7:52 ` [PATCH 1/2] dt-bindings: serial: rs485: add rs485-mux-gpios binding Krzysztof Kozlowski
2023-11-21 8:27 ` Rasmus Villemoes
2023-11-21 8:34 ` Krzysztof Kozlowski
2023-11-21 9:28 ` Rasmus Villemoes
2023-11-22 18:00 ` Krzysztof Kozlowski
2023-11-22 14:53 ` Lukas Wunner
2023-11-23 10:07 ` Rasmus Villemoes
2023-11-23 10:38 ` Lukas Wunner
2023-11-23 13:48 ` Rasmus Villemoes
2023-11-25 23:40 ` Lino Sanfilippo
2023-11-27 12:14 ` Christoph Niedermaier
2023-12-06 15:42 ` Lino Sanfilippo
2023-12-07 12:35 ` Andy Shevchenko
2023-12-09 11:24 ` Lino Sanfilippo
2023-12-09 11:47 ` Lino Sanfilippo
2023-12-11 13:07 ` Andy Shevchenko
2023-12-14 8:52 ` Lino Sanfilippo
2023-12-14 10:24 ` Crescent CY Hsieh
2023-12-14 13:41 ` Christoph Niedermaier
2023-12-14 14:04 ` Lino Sanfilippo
2023-12-14 14:50 ` Christoph Niedermaier
2023-12-15 22:13 ` Lino Sanfilippo
2023-12-18 9:08 ` Christoph Niedermaier
2023-12-21 15:53 ` Lukas Wunner
2023-12-23 12:49 ` Christoph Niedermaier
2023-12-23 13:40 ` Lino Sanfilippo
2023-12-24 10:11 ` Christoph Niedermaier
2023-12-28 23:25 ` Lukas Wunner
2023-11-20 15:10 ` [PATCH 2/2] serial: core: implement support for rs485-mux-gpios Rasmus Villemoes
2023-11-20 23:28 ` Lino Sanfilippo
2023-11-21 10:49 ` Dan Carpenter
2023-11-22 15:10 ` Lukas Wunner
2023-12-04 5:00 ` Dan Carpenter
2023-11-22 14:57 ` [PATCH 0/2] serial: add rs485-mux-gpio dt binding and support Andy Shevchenko
2023-12-27 17:40 [PATCH 1/2] dt-bindings: serial: rs485: add rs485-mux-gpios binding Andy Shevchenko
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