Bug 8576

Summary:	Building embedded Linux for Atmel SAMA5D4_Xplained with HDMI work not propber. HDMI does not work
Product:	buildroot	Reporter:	JensAmberg <JensAmberg>
Component:	Other	Assignee:	unassigned
Status:	RESOLVED WONTFIX
Severity:	major	CC:	buildroot
Priority:	P5
Version:	2015.11
Target Milestone:	---
Hardware:	PC
OS:	Linux
Host:		Target:
Build:

Description JensAmberg 2015-12-31 21:30:51 UTC

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.

Comment 1 JensAmberg 2016-01-25 19:10:31 UTC

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.

Comment 2 Thomas Petazzoni 2016-02-14 21:08:11 UTC

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.

Comment 3 JensAmberg 2016-02-16 17:54:35 UTC

How can i contact Atmel Kernel developer? I post an bug on www.linux4sam.com Forum. But nothing happens