Thread (18 messages) 18 messages, 4 authors, 2015-01-30

Re: [PATCH v2 03/13] ARM: shmobile: kzm9d dts: Add chosen/stdout-path

From: Simon Horman <horms@verge.net.au>
Date: 2014-10-06 09:05:27
Also in: linux-sh

On Mon, Oct 06, 2014 at 10:43:28AM +0200, Geert Uytterhoeven wrote:
Hi Simon,

On Mon, Oct 6, 2014 at 4:36 AM, Simon Horman [off-list ref] wrote:
quoted
On Fri, Oct 03, 2014 at 05:11:34PM +0200, Geert Uytterhoeven wrote:
quoted
Add a stdout-path property so that automatic console selection works
in the absence of a "console=" parameter on the kernel command line.

Remove the now-superfluous "console=" parameter from chosen/bootargs.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
In my environment the bootargs portion of this change results
in no console output. I am guessing that this is because the
console starts with a different terminal speed (though which speed
I am unsure).

If my guess is correct then strictly speaking this is not a bug,
though it is a behavioural change. And as such I think at the very
least it needs some discussion.
I forgot emev is the only supported SoC not using sh-sci.
drivers/tty/serial/sh-sci.c:serial_console_setup() defaults to 115200 baud,
while serial8250_console_setup() defaults to 9600 baud.

So we have to keep the console= parameter. Will resend.
Thanks!
Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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