Re: [PATCH 0/2] drm: xlnx: zynqmp_kms: 16 bpp fixes for Xorg startup on AMD KV260

Tomi Valkeinen
2025-12-19T11:59:29Z

Hi Mikko,

On 05/12/2025 14:37, Mikko Rapeli wrote:
> Hi,
>
> Currently on default yocto images Xorg fails to start on AMD KV260
> because 24/32 color depth gets detected but does not actually work.
>
> These two patches fix the issue and now 16 bpp gets detected
> and Xorg starts and draws on external HDMI display using
> kernel.org based linux-yocto kernel.
>
> Anatoliy Klymenko (1):
> drm: xlnx: zynqmp_kms: Init fbdev with 16 bit color
>
> Mikko Rapeli (1):
> drm: xlnx: zynqmp_kms: set preferred_depth to 16 bpp
>
> drivers/gpu/drm/xlnx/zynqmp_kms.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>

Did you notice the few already sent serieses on the list where the topic
has been discussed?

[PATCH] drm: xlnx: zynqmp_dp: Support DRM_FORMAT_XRGB8888
[PATCH 0/3] drm: zynqmp: Make the video plane primary

Or is there something else on KV260 that messes up the 24 bit color?

Tomi