From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sergei Shtylyov Subject: Re: [PATCH] ARM: shmobile: alt dts: Drop console= bootargs parameter Date: Sat, 31 Jan 2015 00:49:23 +0300 Message-ID: <54CBFC63.4070808@cogentembedded.com> References: <1415075018-27529-1-git-send-email-horms+renesas@verge.net.au> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1415075018-27529-1-git-send-email-horms+renesas@verge.net.au> Sender: linux-sh-owner@vger.kernel.org To: Simon Horman , linux-sh@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, Magnus Damm , Ulrich Hecht , Geert Uytterhoeven , devicetree@vger.kernel.org List-Id: devicetree@vger.kernel.org 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 > Cc: Geert Uytterhoeven > Cc: devicetree@vger.kernel.org > Signed-off-by: Simon Horman > --- > 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