[U-Boot] TI8148 EVM

[Tom Rini]

On Thu, Oct 22, 2015 at 08:06:36AM -0400, Brian Hutchinson wrote:
> On Oct 22, 2015 7:50 AM, "Tom Rini" <trini at konsulko.com> wrote:
> >
> > On Thu, Oct 22, 2015 at 07:33:07AM -0400, Brian Hutchinson wrote:
> > > On Oct 22, 2015 7:21 AM, "Tom Rini" <trini at konsulko.com> wrote:
> > > >
> > > > On Thu, Oct 22, 2015 at 12:12:32PM +0100, Lad, Prabhakar wrote:
> > > >
> > > > > Hi Tom,
> > > > >
> > > > > I was trying the latest master branch for ti8148 evm to boot from SD
> > > > > card, following are the steps which I followed:
> > > > >
> > > > > 1:  make ARCH=arm CROSS_COMPILE=arm-cortex_a8-linux-gnueabi- clean
> > > distclean
> > > > > 2: make ARCH=arm CROSS_COMPILE=arm-cortex_a8-linux-gnueabi-
> > > ti814x_evm_config
> > > > > 3: make ARCH=arm CROSS_COMPILE=arm-cortex_a8-linux-gnueabi-
> > > > >
> > > > > Copy the MLO and u-boot.bin to SD card boot partition which is
> > > > > bootable, I see no prints coming from the 1st stage bootlaoder, cant
> > > > > debug it as I don’t have access to JTAG.
> > > > >
> > > > > Any pointers is this code tested ?
> > > >
> > > > First, you need to use u-boot.img not u-boot.bin.  Second, which PG do
> > > > you have on the board?  We only have support for PG1.0 today and not
> > > > PG2.0 as Matt did the initial bring-up and only has a PG1.0 board.
> The
> > > > code should be easily ported from the old PSP tree to support PG2.0
> > > > however.
> > >
> > > What about DM816x support?  Mainline u-boot have anything for it?  We
> > > finally have Linux 4.2.3 running on our board with .dts support.  Now
> I'm
> > > starting the task of getting a mainline u-boot to work so we can get
> rid of
> > > the legacy dtb being part of kernel.
> >
> > Well, the ti816x support we have today should be a good starting point
> > at least for the "DM" variant of the chip.  I forget which one of the
> > boards I have technically but I _think_ the differences are high level
> > enough that for U-Boot it's OK.
> 
> We are using PG2.1.  I "think" the only difference between 2.0 and 2.1 is
> top end clock speed.

Yeah, sounds about right.  But that's 816x not 814x, they are different
SoCs :)

-- 
Tom
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