[Buildroot] [Bug 8576] New: Building embedded Linux for Atmel SAMA5D4_Xplained with HDMI work not propber. HDMI does not work

[Buildroot] [Bug 8576] New: Building embedded Linux for Atmel SAMA5D4_Xplained with HDMI work not propber. HDMI does not work

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=8576

            Bug ID: 8576
           Summary: Building embedded Linux for Atmel SAMA5D4_Xplained
                    with HDMI work not propber. HDMI does not work
           Product: buildroot
           Version: 2015.11
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: major
          Priority: P5
         Component: Other
          Assignee: unassigned at buildroot.uclibc.org
          Reporter: JensAmberg at mail.de
                CC: buildroot at uclibc.org

Building embedded Linux for Atmel SAMA5D4_Xplained with HDMI work not proper.
HDMI does not work.

When I build with buildroot the images for the Atme SASMA5D4_Xaplined Board.
inkl HDMI and fb0 HDMI will not work.

A already change the device tree to the correct dts file. However the fb0 is
present in the rootfs under /dev.

I make a double check. I use the linux4sam demo Image 4.7 and flash it tto my
EvalBoard. HDMI Works perfect. After this i build with buildroot. Board is
booting everthing works but not HDMI.

And no the strange thing. I have replaced file for file from the demo 
linux4sam demo Image 4.7. Firts when i take from  linux4sam demo Image 4.7 the
at91bootstrap.bin the HDMI works.

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[Buildroot] [Bug 8576] Building embedded Linux for Atmel SAMA5D4_Xplained with HDMI work not propber. HDMI does not work

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=8576

--- Comment #1 from JensAmberg <JensAmberg@mail.de> ---
Ok i habe investigated the problem. It depends on wrong clock. With the new
bootloader the CPU clock is set to 600 MHZ. But the kernel does not handle this
correct.

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[Buildroot] [Bug 8576] Building embedded Linux for Atmel SAMA5D4_Xplained with HDMI work not propber. HDMI does not work

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=8576

Thomas Petazzoni <thomas.petazzoni@free-electrons.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |WONTFIX
             Status|NEW                         |RESOLVED

--- Comment #2 from Thomas Petazzoni <thomas.petazzoni@free-electrons.com> ---
While a real problem, this bug is not a Buildroot problem, but rather a kernel
problem that should be discussed with the Atmel kernel maintainers.

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[Buildroot] [Bug 8576] Building embedded Linux for Atmel SAMA5D4_Xplained with HDMI work not propber. HDMI does not work

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=8576

--- Comment #3 from JensAmberg <JensAmberg@mail.de> ---
How can i contact Atmel Kernel developer? I post an bug on www.linux4sam.com
Forum. But nothing happens

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[Buildroot] [Bug 8576] Building embedded Linux for Atmel SAMA5D4_Xplained with HDMI work not propber. HDMI does not work

[Grant Edwards]

On 2016-02-16, bugzilla at busybox.net <bugzilla@busybox.net> wrote:

> --- Comment #3 from JensAmberg <JensAmberg@mail.de> ---
> How can i contact Atmel Kernel developer? I post an bug on www.linux4sam.com
> Forum. But nothing happens

I've never had any luck all with linux4sam.com, and have given up
using it.  Questions are usually completely ignored.  If there are any
responses, they're usually way off base. You might as well walk down
the street and ask panhandlers: it appears to be the clueless leading
the incompetent.  You might try contacting your Atmel FAE to see if he
can help.  There also used to be one or two knowlegable Atmel
employees who participated in comp.arch.embedded, but that was several
years ago.

-- 
Grant Edwards               grant.b.edwards        Yow! Used staples are good
                                  at               with SOY SAUCE!
                              gmail.com            

[Buildroot] [Bug 8576] Building embedded Linux for Atmel SAMA5D4_Xplained with HDMI work not propber. HDMI does not work

[Alexandre Belloni]

Hi,

On 16/02/2016 at 18:55:50 +0000, Grant Edwards wrote :
> On 2016-02-16, bugzilla at busybox.net <bugzilla@busybox.net> wrote:
> 
> > --- Comment #3 from JensAmberg <JensAmberg@mail.de> ---
> > How can i contact Atmel Kernel developer? I post an bug on www.linux4sam.com
> > Forum. But nothing happens
> 
> I've never had any luck all with linux4sam.com, and have given up
> using it.  Questions are usually completely ignored.  If there are any
> responses, they're usually way off base. You might as well walk down
> the street and ask panhandlers: it appears to be the clueless leading
> the incompetent.  You might try contacting your Atmel FAE to see if he
> can help.  There also used to be one or two knowlegable Atmel
> employees who participated in comp.arch.embedded, but that was several
> years ago.
> 

The best way to contact kernel developers is to use the kernel mailing
lists. For AT91, this is the linux arm kernel mailing list (lakml):

http://lists.infradead.org/mailman/listinfo/linux-arm-kernel


-- 
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com