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authorMartin Blumenstingl <martin.blumenstingl@googlemail.com>2016-12-11 23:42:23 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-01-12 13:51:24 +0300
commitec84aa0a920192df56624961cb146947d7d9e11e (patch)
tree1249b3ff2d740f9e444c28b5688e829ec6aa173b /Documentation/admin-guide
parent2aaa957361f9b84fb72ce0124ebb1e5835235ba8 (diff)
downloadlinux-ec84aa0a920192df56624961cb146947d7d9e11e.tar.xz
tty: serial: lantiq: implement earlycon support
This allows enabling earlycon for devices with a Lantiq serial console by splitting lqasc_serial_port_write() from lqasc_console_write() and re-using the new function for earlycon's write callback. The kernel-parameter name matches the driver name ("lantiq"), similar to how other drivers implement this. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/admin-guide')
-rw-r--r--Documentation/admin-guide/kernel-parameters.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index be7c0d9506b1..52f13674bc21 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -966,6 +966,12 @@
serial port must already be setup and configured.
Options are not yet supported.
+ lantiq,<addr>
+ Start an early, polled-mode console on a lantiq serial
+ (lqasc) port at the specified address. The serial port
+ must already be setup and configured. Options are not
+ yet supported.
+
lpuart,<addr>
lpuart32,<addr>
Use early console provided by Freescale LP UART driver