On 20.08.25 12:40, Mario Marietto wrote:
---> U-Boot has CONFIG_I2C_EDID to build a module to parse EDID
information.
This is not enabled by khadas-edge-v-rk3399_defconfig. I would assume
this is part of the problem.
scripts/get_maintainer.pl configs/khadas-edge-v-rk3399_defconfig and
scripts/get_maintainer.pl common/edid
Hello. Since u-boot should be installed on FreeBSD,can you point me where I
can get the khadas-edge-v-rk3399_defconfig file and the u-boot code that
should be recompiled ?
The U-Boot project is hosted at https://source.denx.de/u-boot/u-boot.
FreeBSD's U-Boot port is described at
https://www.freshports.org/sysutils/u-boot-master.
Best regards
Heinrich
On Tue, Aug 19, 2025 at 6:23 PM Heinrich Schuchardt <xypron.g...@gmx.de>
wrote:
On 19.08.25 17:54, Mario Marietto wrote:
Hello.
I've installed FreeBSD 14.2-RELEASE on both my boards (RockPro64 and
Khadas
Edge V),both based on the Rockchip RK3399 and I've used a display that
has
a resolution of 720 x 720 resolution and I saw that the screen remains
almost black (almost because I see a dim illumination coming from the
display) .
I don't even see the u-boot logo. Instead,it is able to turn on my large
HDMI monitor,which has a resolution of 1920x1080 pixels.
Since I'm building a FreeBSD modular phone, I want to use a small HDMI
display with a low resolution. My question is : why is u-boot able to
turn
on a monitor that has a resolution of 1920x1080 and it's not able to turn
on the other HDMI display that has a resolution of 720x720 ?
Or even better : what's the lowest resolution that will work ?
If I want to buy a display that has a resolution of 800x600,will u-boot
be
able to turn it on ? 1024x768 ? more ?
Thanks.
Hello Mario,
The way operating systems detect monitor resolution is by reading the
EDID information via the I2C lines of the HDMI connector.
U-Boot has CONFIG_I2C_EDID to build a module to parse EDID information.
This is not enabled by khadas-edge-v-rk3399_defconfig. I would assume
this is part of the problem.
scripts/get_maintainer.pl configs/khadas-edge-v-rk3399_defconfig and
scripts/get_maintainer.pl common/edid
will provide the people and the U-Boot list that you could contact for
support.
There is also a #u-boot IRC channel at irc.libera.chat.
Best regards
Heinrich
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