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From:   Martin Kepplinger <martin.kepplinger@ginzinger.com>
To:     <gregkh@linuxfoundation.org>, <robh+dt@kernel.org>,
        <mark.rutland@arm.com>, <jslaby@suse.com>, <corbet@lwn.net>,
        <richard.genoud@gmail.com>, <nicolas.ferre@microchip.com>,
        <alexandre.belloni@bootlin.com>, <ludovic.desroches@microchip.com>,
        <mcoquelin.stm32@gmail.com>, <alexandre.torgue@st.com>,
        <linux-serial@vger.kernel.org>, <devicetree@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-stm32@st-md-mailman.stormreply.com>
CC:     <linux-kernel@vger.kernel.org>,
        Martin Kepplinger <martin.kepplinger@ginzinger.com>
Subject: [PATCH v2 2/9] Documentation: serial-rs485: document SER_RS485_DELAY_IN_USEC flag
Date:   Thu, 21 Feb 2019 18:17:51 +0100
Message-ID: <20190221171758.10322-2-martin.kepplinger@ginzinger.com>
In-Reply-To: <20190221171758.10322-1-martin.kepplinger@ginzinger.com>
References: <20190221171758.10322-1-martin.kepplinger@ginzinger.com>
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Document the new RS485 flag, SER_RS485_DELAY_IN_USEC that specifies that the
rts delay values stored in struct serial_rs485 hold values in microseconds
instead of milliseconds (the default).

Signed-off-by: Martin Kepplinger <martin.kepplinger@ginzinger.com>
---
 Documentation/serial/serial-rs485.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/serial/serial-rs485.txt b/Documentation/serial/serial-rs485.txt
index ce0c1a9b8aab..a1e15e9efc2e 100644
--- a/Documentation/serial/serial-rs485.txt
+++ b/Documentation/serial/serial-rs485.txt
@@ -75,6 +75,9 @@
 	/* Set rts delay after send, if needed: */
 	rs485conf.delay_rts_after_send = ...;
 
+	/* Specify the rts delay to be microseconds, not milliseconds */
+	rs485conf.flags |= SER_RS485_DELAY_IN_USEC;
+
 	/* Set this flag if you want to receive data even while sending data */
 	rs485conf.flags |= SER_RS485_RX_DURING_TX;
 
-- 
2.20.1


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