Search found 10 matches
- Sun Aug 04, 2019 5:23 pm
- Forum: Android
- Topic: Android Pie on RPi 3B(+) with hardware acceleration
- Replies: 99
- Views: 74763
Re: Android Pie on RPi 3B(+) with hardware acceleration
Thanks, I was trying to run android in vga monitor via vga666 resistor circuit. I created the relevant pull request in your pie-device-brobwind-rpi3-drm_hwcomposer repository in github. With that commit and relevant kernel panel driver (I'm using simple-panel) and device overlay I successfully run a...
- Mon Jul 29, 2019 9:22 pm
- Forum: Android
- Topic: Android Pie on RPi 3B(+) with hardware acceleration
- Replies: 99
- Views: 74763
Re: Android Pie on RPi 3B(+) with hardware acceleration
Is there any way to change kernel without compiling the whole project? I compiled the kernel but but how to make that into a boot.img easily?
- Sat Jul 27, 2019 3:24 pm
- Forum: Graphics programming
- Topic: Questions about FKMS
- Replies: 19
- Views: 12120
Re: Questions about FKMS
Okey first I wasted couple of hours bcz I had CONFIG_DRM_PANEL_SIMPLE disabled in my kernel .config :shock: :oops: I can enable DPI and control its timing/freq/res by editing drivers/gpu/drm/panel/panel-simple.c and recompiling kernel. :ugeek: The problem is now how to do what display_default_lcd=1 ...
- Fri Jul 26, 2019 11:30 am
- Forum: Graphics programming
- Topic: Questions about FKMS
- Replies: 19
- Views: 12120
Re: Questions about FKMS
No my friend, you missed the contextfruitoftheloom wrote: ↑Fri Jul 26, 2019 4:46 am"Panel" is via the DSi Connector in this context, nothing to do with VGA, which already has a solution:
https://uk.pi-supply.com/products/gert- ... spberry-pi

- Thu Jul 25, 2019 10:23 pm
- Forum: Graphics programming
- Topic: Questions about FKMS
- Replies: 19
- Views: 12120
Re: Questions about FKMS
So the panel driver is something like https://github.com/raspberrypi/linux/blob/rpi-4.19.y/drivers/gpu/drm/panel/panel-simple.c, and indeed that is the one that the Kippah overlay is loading. If you look at the overlay, it is saying the panel is a "ontat,yx700wv03". In the driver that str...
- Thu Jul 25, 2019 3:39 pm
- Forum: Graphics programming
- Topic: Questions about FKMS
- Replies: 19
- Views: 12120
Re: Questions about FKMS
I see, the scenario becomes more clear now. I think this should be mentioned in https://www.raspberrypi.org/documentation/hardware/raspberrypi/dpi/README.md . Just a note that "Instructions in this page won't work with vc4-kms-v3d" There is an overlay for running a DPI display from vc4-kms...
- Thu Jul 25, 2019 2:44 pm
- Forum: Graphics programming
- Topic: Questions about FKMS
- Replies: 19
- Views: 12120
Re: Questions about FKMS
Thank you both for the quick answer. I was having trouble with vga666 / DPI Display. dpi_ related entries in config.txt wasn't being applied. Landed here from google. Kinda off-topic, but problem is solved by switching to vc4-fkms-v3d from vc4-kms-v3d.
- Thu Jul 25, 2019 2:05 pm
- Forum: Graphics programming
- Topic: Questions about FKMS
- Replies: 19
- Views: 12120
Re: Questions about FKMS
Kinda offtopic but what is the difference between vc4-fkms-v3d and vc4-kms-v3d?
- Thu Jul 18, 2019 4:12 pm
- Forum: Beginners
- Topic: STICKY: Using a Gert VGA 666 adapter - [HOWTO]
- Replies: 219
- Views: 267958
Re: STICKY: Using a Gert VGA 666 adapter - [HOWTO]
Thank you very much for the explanation. I'll discard the DAC0808 idea and use resistors. I'll try two in series to make the correct value, ex: 3.3K+680 = 4K, 6.8K+1.2K = 8K etc.... If i don't find exact 2K,4K,8K etc.. values.
- Tue Jul 16, 2019 3:12 pm
- Forum: Beginners
- Topic: STICKY: Using a Gert VGA 666 adapter - [HOWTO]
- Replies: 219
- Views: 267958
Re: STICKY: Using a Gert VGA 666 adapter - [HOWTO]
Can anyone tell me (or direct me to some spec) about the DAC conversation timing? Using a resistor network will be very fast but its hard to find accurate and multiplier value resistors. I'm thinking about using three DAC0808. According to Datasheet its 150 ns. Is that okey for vga?