[PATCH v2 0/4] New DRM properties for output color format

Sean Summers Sean.Summers at qsc.com
Wed May 28 16:23:55 UTC 2025


Hi Andri,

I've made this patch, but I'm unable to configure the video pipeline for YCC 420. I'm using libdrm's modetest to set the output format / colorspace and pass a test pattern through. Modetest can see the new "force output format" property, but it's being rejected and falls back to RGB. I verified my EDID has support for YCC 420. Can you tell me how you're testing this change?

Here's my modetest command:
modetest -s 185:3840x2160-60 at NV12 -w "185:force color format:8"

Thanks,
Sean
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