[PATCH] ARM: dts: add initial dts file for ORIGEN4QUAD

[Kyuho Choi]

Hi Tomasz,

2012/11/26 Tomasz Figa <t.figa at samsung.com>

> Hi Kyungmin, Kyuho,
>
> On Monday 26 of November 2012 20:52:12 Kyungmin Park wrote:
> > Hi,
> >
> > On 11/26/12, chlrbgh0 at gmail.com <chlrbgh0 at gmail.com> wrote:
> > > From: Kyuho Choi <kh.choi at insignal.co.kr>
> > >
> > > This patch adds initial dts file for ORIGEN4QUAD board.
> > > ORIGEN4QUAD board based on Samsung EXYNOS4412 SoC.
> > > More properties will be added later.
> > >
> > > Signed-off-by: Kyuho Choi <kh.choi at insignal.co.kr>
> > > ---
> > >
> > >  arch/arm/boot/dts/exynos4412-origen4quad.dts |   45
> > >
> > > ++++++++++++++++++++++++++
> > >
> > >  1 files changed, 45 insertions(+), 0 deletions(-)
> > >  create mode 100644 arch/arm/boot/dts/exynos4412-origen4quad.dts
> > >
> > > diff --git a/arch/arm/boot/dts/exynos4412-origen4quad.dts
> > > b/arch/arm/boot/dts/exynos4412-origen4quad.dts
> > > new file mode 100644
> > > index 0000000..390a2ab
> > > --- /dev/null
> > > +++ b/arch/arm/boot/dts/exynos4412-origen4quad.dts
> > > @@ -0,0 +1,45 @@
> > > +/*
> > > + * Samsung's Exynos4412 based Origen4Quad board device tree source
> > > + *
> > > + * Copyright (c) 2012-2013 Isnignal Co., Ltd.
> > > + *         http://www.insignal.co.kr
> > > + *
> > > + * Device tree source file for Insignal's Origen4Quad board which is
> > > based on
> > > + * Samsung's Exynos4412 SoC.
> > > + *
> > > + * This program is free software; you can redistribute it and/or
> > > modify + * it under the terms of the GNU General Public License
> > > version 2 as + * published by the Free Software Foundation.
> > > +*/
> > > +
> > > +/dts-v1/;
> > > +/include/ "exynos4412.dtsi"
> > > +
> > > +/ {
> > > +   model = "Insignal Origen4Quad board based on Exynos4412";
> > > +   compatible = "insignal,origen4quad", "samsung,exynos4412";
> > > +
> > > +   memory {
> > > +           reg = <0x40000000 0x40000000>;
> > > +   };
> >
> > does it test to boot with this dts file?
> > does it support 1GiB memory section?
>
> It will most likely fail to boot with u-boot versions that do not support
> replacing memory configuration in device tree and without
> CONFIG_ARM_ATAG_DTB_COMPAT enabled.
>
> In other words, the memory setup from dts is used only if both of the
> following are true:
>  - CONFIG_ARM_ATAG_DTB_COMPAT is disabled
>  - u-boot does not modify memory setup in device tree passed to the kernel
>
> You're right. I'd working based on `exynos4_defconfig`.
It's default disabled `CONFIG_ARM_ATAG_DTB_COMPAT`.
And my u-boot version is 2012.10.

> Best regards,
> --
> Tomasz Figa
> Samsung Poland R&D Center
> SW Solution Development, Linux Platform
>
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