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docs: admin-guide: kernel-parameters: Document earlycon options for i.MX UARTs

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

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Link: https://lore.kernel.org/r/20200229132750.2783-1-j.neuschaefer@gmx.net
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Jonathan Neuschäfer
2020-03-02 12:51:37 -07:00
committed by Jonathan Corbet
parent 0a464ea4dc
commit 7fe068dba8
1 changed files with 6 additions and 0 deletions
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Documentation/admin-guide/kernel-parameters.txt
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@@ -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