linux-kernel - [PATCH] docs: admin-guide: kernel-parameters: Document earlycon options for i.MX UARTs

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Message-Id: <20200229132750.2783-1-j.neuschaefer@gmx.net>
Date:   Sat, 29 Feb 2020 14:27:48 +0100
From:   Jonathan Neuschäfer <j.neuschaefer@....net>
To:     linux-doc@...r.kernel.org
Cc:     NXP Linux Team <linux-imx@....com>,
        Jonathan Neuschäfer <j.neuschaefer@....net>,
        Jonathan Corbet <corbet@....net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>,
        Juergen Gross <jgross@...e.com>, linux-kernel@...r.kernel.org
Subject: [PATCH] docs: admin-guide: kernel-parameters: Document earlycon options for i.MX UARTs

drivers/tty/serial/imx.c implements these earlycon options.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@....net>
---
 Documentation/admin-guide/kernel-parameters.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 47cd55e339a5..d118ee5721b7 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -1095,6 +1095,12 @@
 			A valid base address must be provided, and the serial
 			port must already be setup and configured.

+		ec_imx21,<addr>
+		ec_imx6q,<addr>
+			Start an early, polled-mode, output-only console on the
+			Freescale i.MX UART at the specified address. The UART
+			must already be setup and configured.
+
 		ar3700_uart,<addr>
 			Start an early, polled-mode console on the
 			Armada 3700 serial port at the specified
--
2.20.1