[OpenWrt-Devel] [PATCH] arc770/axs101: fix console output

Alexey Brodkin Alexey.Brodkin at synopsys.com
Mon Jan 18 11:42:24 EST 2016

While bumping kernel version kernel command line was
unintentionally modified in attempt to make it closer
to upstream version.

In case of AXS that has not only serial port but HDMI/USB
both capable of being debug console we have 2 entries in
kernel's command line:
console=tty0 console=ttyS3,115200n8

But as it turned out OpenWRT uses procd as init instead of
Busybox. And in its turn procd gets the first "console"
entry from kernel command line (/proc/cmdline) and uses it
if default inittab is used:
::askconsole:/bin/ash --login

So what we got is non-functional serial console.
That change removes "console=tty0" which brings serial
console back to life.

Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com>
Cc: Felix Fietkau <nbd at openwrt.org>
Cc: Jo-Philipp Wich <jow at openwrt.org>
Cc: Jonas Gorski <jogo at openwrt.org>
 target/linux/arc770/dts/axs101.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/linux/arc770/dts/axs101.dts b/target/linux/arc770/dts/axs101.dts
index 769e81a..8718eb4 100644
--- a/target/linux/arc770/dts/axs101.dts
+++ b/target/linux/arc770/dts/axs101.dts
@@ -17,6 +17,6 @@
 	compatible = "snps,axs101", "snps,arc-sdp";
 	chosen {
-		bootargs = "earlycon=uart8250,mmio32,0xe0022000,115200n8 console=tty0 console=ttyS3,115200n8 consoleblank=0";
+		bootargs = "earlycon=uart8250,mmio32,0xe0022000,115200n8 console=ttyS3,115200n8";
openwrt-devel mailing list
openwrt-devel at lists.openwrt.org

More information about the openwrt-devel mailing list