[U-Boot] Rockpro64_V2.1 2018-07-02 Boot Freeze

[Jagan Teki]

On Mon, Aug 19, 2019 at 7:01 PM Mark Kettenis <mark.kettenis at xs4all.nl> wrote:
>
> > From: Jagan Teki <jagan at amarulasolutions.com>
> > Date: Mon, 19 Aug 2019 00:21:40 +0530
> >
> > + Kever
> >
> > On Sun, Aug 18, 2019 at 1:21 AM Kurt Miller <lists at intricatesoftware.com> wrote:
> > >
> > > Hello,
> > >
> > > The Rockpro64_V2.1 2018-07-02 using master code base freezes
> > > with only the following output:
> > >
> > > U-Boot TPL 2019.10-rc2-00001-gdf33f86468-dirty (Aug 16 2019 - 22:31:31)
> > >
> > > Whereas another board dated 2018-06-06 works and outputs the following:
> > >
> > > U-Boot TPL 2019.10-rc2-00001-gdf33f86468-dirty (Aug 16 2019 - 22:31:31)
> > > Trying to boot from BOOTROM
> > > Returning to boot ROM...
> > >
> > > U-Boot SPL 2019.10-rc2-00001-gdf33f86468-dirty (Aug 16 2019 - 22:31:31 +0200)
> > >
> > > Both board have 4G RAM.
> > >
> > > U-Boot was built by Mark Kettenis from master with only the
> > > baud rate changed for both tests. The 2018-07-02 board has different
> > > markings for the CPU and the RAM as follows:
> > >
> > >      2018-06-06       2018-07-02
> > > CPU: RK3399           RK3399
> > >      SBETMF976 1652   SBETNM271 1826
> > >
> > > RAM: PS006-075 BT     PS052-053 BT
> > >      N1YJ             83RL
> > >
> > > Please let me know if there is additional information needed to
> > > further diagnose the boot freeze.
> >
> > Please use mainline, and with doc/README.rockchip instructions.
>
> This is mainline as of Aug 16.  I built the image for Kurt and it the
> same binaries (one for TPL+SPL one for U-Boot+ATF) works fine on my
> board.
>
> > I'm able to boot with mainline tree.
>
> Sure I can believe that.  I believe your board from the same batch as
> mine.  I suspect that the DRAM used on Kurt's board may require
> slightly different timings.

Yes, this can be the cause. Thanks for pointing this.