On Wed, Nov 29, 2017 at 01:14:21PM +0300, Sergei Shtylyov wrote: > Hello! > > On 11/29/2017 12:51 PM, Simon Horman wrote: > > > > Add the initial device tree for the V3M Starter Kit board. > > > The board has 1 debug serial port (SCIF0); include support for it, > > > so that the serial console can work. > > > > > > Based on the original (and large) patch by Vladimir Barinov. > > > > > > Signed-off-by: Vladimir Barinov <vladimir.barinov@xxxxxxxxxxxxxxxxxx> > > > Signed-off-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx> > > > > > > --- > > > arch/arm64/boot/dts/renesas/Makefile | 2 - > [...] > > > Index: renesas/arch/arm64/boot/dts/renesas/r8a77970-v3msk.dts > > > =================================================================== > > > --- /dev/null > > > +++ renesas/arch/arm64/boot/dts/renesas/r8a77970-v3msk.dts > > > @@ -0,0 +1,44 @@ > > > +/* > > > + * Device Tree Source for the V3M Starter Kit board > > > + * > > > + * Copyright (C) 2017 Renesas Electronics Corp. > > > + * Copyright (C) 2017 Cogent Embedded, Inc. > > > + * > > > + * This file is licensed under the terms of the GNU General Public License > > > + * version 2. This program is licensed "as is" without any warranty of any > > > + * kind, whether express or implied. > > > + */ > > > + > > > +/dts-v1/; > > > +#include "r8a77970.dtsi" > > > + > > > +/ { > > > + model = "Renesas V3M Starter Kit board"; > > > + compatible = "renesas,v3msk", "renesas,r8a77970"; > > > + > > > + aliases { > > > + serial0 = &scif0; > > > + }; > > > + > > > + chosen { > > > > For consistency with other Renesas boards I would like to request the > > following be added here: > > > > bootargs = "ignore_loglevel rw"; > > There's currently no consistency as ulcb.dtsi doesn't seem to specify > "bootargs" prop at all. Moreover, this prop seems to be ignored by ARM64 > kernel -- I can only specify "bootargs" in U-Boot.... I had assumed that ulcb.dtsi should be updated in this regards but I now see that bootargs does not seem to have any effect (on r8a7796/salvator-x) as you suggest. I have applied this and the following patch.