[PATCH v2] ARM: dts: aspeed: Update reserved memory nodes for zaius and witherspoon

[Rick Altherr]

Sounds good to me.

On Feb 16, 2017 7:41 PM, "Joel Stanley" <joel at jms.id.au> wrote:

> On Fri, Feb 17, 2017 at 2:03 PM, Rick Altherr <raltherr at google.com> wrote:
> > Current Zaius and Barreleye G2 boards have AST2500 which has VGA support.
> > Google hasn't tried the VGA but it is there. We plan to switch to 2520
> later
> > for our own designs but it's only a BOM option to switch between the two.
>
> I think detecting the board revision GPIOs in u-boot and performing a
> fixup of the device tree is a good way to handle these kind of things.
>
> Perhaps we will end up having different device trees if the systems
> end up with vastly different configurations, or configs that aren't
> detectable from software.
>
>
> >
> > On Feb 16, 2017 7:15 PM, "Cyril Bur" <cyrilbur at gmail.com> wrote:
> >
> > Zaius platform doesn't use VGA so don't reserve that memory
> >
> > Signed-off-by: Cyril Bur <cyrilbur at gmail.com>
> > ---
> > v2: Drop reserving the framebuffer on Zaius
> >     Both platforms have 1GB not 512MB - adjust numbers
> >     Add comment requested by Joel.
> >
> >  arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts | 15 +++++++++++++--
> >  arch/arm/boot/dts/aspeed-bmc-opp-zaius.dts       | 12 ++++++++++--
> >  2 files changed, 23 insertions(+), 4 deletions(-)
> >
> > diff --git a/arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts
> > b/arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts
> > index 4b2d8aa8abb6..b79cadb2f6d7 100644
> > --- a/arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts
> > +++ b/arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts
> > @@ -25,9 +25,20 @@
> >                 #size-cells = <1>;
> >                 ranges;
> >
> > -               flash_memory: region at 94000000 {
> > +               /*
> > +                * The addreses for the flash_memory reserved range are
> the
> > +                * highest allowable for the size of the mapping (ie, the
> > +                * address has no set bits greater than the size)
> > +                */
> > +
> > +               flash_memory: region at b8000000 {
> > +                       no-map;
> > +                       reg = <0xb8000000 0x04000000>; /* 64M */
> > +               };
> > +
> > +               vga_memory: framebuffer at bc000000 {
> >                         no-map;
> > -                       reg = <0x94000000 0x04000000>; /* 64M */
> > +                       reg = <0xbc000000 0x04000000>; /* 64M */
> >                 };
> >         };
> >
> > diff --git a/arch/arm/boot/dts/aspeed-bmc-opp-zaius.dts
> > b/arch/arm/boot/dts/aspeed-bmc-opp-zaius.dts
> > index e1c9b3f4fe44..5a06da43801b 100644
> > --- a/arch/arm/boot/dts/aspeed-bmc-opp-zaius.dts
> > +++ b/arch/arm/boot/dts/aspeed-bmc-opp-zaius.dts
> > @@ -25,10 +25,18 @@
> >                 #size-cells = <1>;
> >                 ranges;
> >
> > -               flash_memory: region at 94000000 {
> > +               /*
> > +                * The addreses for the flash_memory reserved range are
> the
> > +                * highest allowable for the size of the mapping (ie, the
> > +                * address has no set bits greater than the size)
> > +                */
> > +
> > +               flash_memory: region at bc000000 {
> >                         no-map;
> > -                       reg = <0x94000000 0x04000000>; /* 64M */
> > +                       reg = <0xbc000000 0x04000000>; /* 64M */
> >                 };
> > +
> > +               /* Zaius doesn't use VGA so don't reserve VGA buffer */
> >         };
> >
> >         onewire0 {
> > --
> > 2.11.1
> >
> >
>
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