Hi Laurent
please check this when you have time.
If you need any information, let us know.
thanks and best regard
JINSO/Truong
On 2016年11月11日 10:31, Laurent Pinchart wrote:
Hello Truong,
On Friday 21 Oct 2016 14:20:24 Laurent Pinchart wrote:
On Friday 21 Oct 2016 19:53:47 Xuan Truong Nguyen wrote:
Hello Laurent.
The document mentions that you have used shmobile_defconfig. However,
that configuration in v4.8 doesn't enable CONFIG_CMA, which causes at
least the DU driver to fail probing the device. I thus assume you have
modified the configuration to enable CMA. The fact that
shmobile_defconfig doesn't include the uvcvideo driver used by test 14
seems to confirm local modifications to the configuration.
Issue 8 ("Lager: bad image quality when shown on HDMI display") can't be
reproduced on my system when displaying a test pattern with the modetest
application. Could you please share more information on how to reproduce
the problem ?
We retested this issue No 8 again with the CONFIG_CMA enabled but the
result is the same. you could see it by the error.jpg image in
attachments. the display device used is Panasonic TH-L19C3 (refer the
device.jpg). we also send you my configs file, too (lager_du.config).
Thank you for the information, I'll try to reproduce the problem here with
your kernel configuration.
I've been able to reproduce the problem here, and at this point I'm not sure
what goes wrong. I've tested older kernels up to the point where HDMI support
for Lager was introduced, and the bug was present in all of them. I'll try to
fix it, but I have other higher priority tasks at the moment.
just one more thing, with CONFIG_CMA enabled, the driver fails on
probing if we boot the board without the HDMI cable inserted in advance.
we have to insert the cable before booting the board. and not all the
display work with current HDMI driver (as our LG display will not work)
we are using the mainline upstream version 4.8
Interesting, I'll check that too.
I haven't had time to check this yet.
if you need any information to debug, please lets us know.
Could you please tell me what you're using to test the display ?
