HDMI output on the NanoPi R5S and R5C

Installing and Using OpenWrt
1

Do the snapshot builds for the NanoPi R5S and R5C have support for HDMI output? I have connected them to a monitor at boot and do not see any output. I guess I am curious if it is supposed to work out of the box and I screwed something up or if there is a package that needs to be installed. If HDMI output is not supported, why not. I am not sure why I need it or want it, but ...

2

You did not screw up, the snapshot builds for R5C and R5S do not support HDMI output.
For what it's worth: Anael enabled that in his builds here: https://github.com/anaelorlinski/OpenWrt-NanoPi-R5S-Builds/releases
I would also be curious to know if HDMI support is planned for those two devices, if anybody knows?

3

You can always copy the build recipe from the Anael build to Openwrt, to see if it's enough to get HDMI going.

4

That is helpful. It sounds like from https://github.com/anaelorlinski/OpenWrt-NanoPi-R5S-Builds/issues/11#issuecomment-2074672993 that HDMI support requires a patch that is not yet in the mainline kernel.

5

hey, sorry to jump into a dead topic. I'm looking to build with 24.10 mainline OpenWrt and I'm having trouble figuring out where to get the drivers. I guess I'm looking for kmod-drm-rockchip? Its not a major issue if I cant get video out, but it makes sense to include it as a backup in case of bad configuration etc. without having to re-flash the eMMC.

I'm still new to the make/build process as I've been using Linux on easy mode, so forgive my ignorance - I'm happy with compiling and installing it myself as it makes sense for it to not be included in the default builds.

I saw this:

video modules

rm -rf package/kernel/linux/modules/video.mk
cp $ROOTDIR/openwrt-$OPENWRT_BRANCH/patches/package/kernel/linux/modules/video.mk package/kernel/linux/modules/

referrring to:

but I have no idea of how to include this in my local build process

any help would be massively appreciated.