Re: [PATCH] ARM: shmobile: alt dts: Drop console= bootargs parameter

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Hello.

On 11/04/2014 07:23 AM, Simon Horman wrote:

Alt is booted from DT, so chosen/stdout-path is
always used, and we can drop the "console=" parameter from chosen/bootargs.

This change has a side-effect of changing the console speed from 38400
to 115200. This is intentional as 115200 is consistently used on
all other shmobile boards.

I'd say it's not very practical to change the console's baud rate from U-Boot's default (AFAIR changing baud rate in U-Boot didn't work)...

Cc: Ulrich Hecht <ulrich.hecht+renesas@xxxxxxxxx>
Cc: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Signed-off-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
---
  arch/arm/boot/dts/r8a7794-alt.dts | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/r8a7794-alt.dts b/arch/arm/boot/dts/r8a7794-alt.dts
index 8aec512..f2cf757 100644
--- a/arch/arm/boot/dts/r8a7794-alt.dts
+++ b/arch/arm/boot/dts/r8a7794-alt.dts
@@ -20,7 +20,7 @@
  	};

  	chosen {
-		bootargs = "console=ttySC0,38400 ignore_loglevel rw root=/dev/nfs ip=dhcp";
+		bootargs = "ignore_loglevel rw root=/dev/nfs ip=dhcp";

Hm, does this even work as intended? I've tried to boot another R8A7794 based board and I couldn't get any output with alike command line. Booting with 'earlyprintk=serial' has shown that tty0 was enabled as a console which is not what we wanted.

WBR, Sergei

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