Hi Johan,

Am Sonntag, 23. August 2026, 14:29:09 Mitteleuropäische Sommerzeit schrieb 
Johan Jonker:
> A validate_blend_mode_for_alpha_formats() function was added that
> fills the kernel log with warnings for Rockchip VOP version 1 SoCs.
> Add a drm_plane_create_blend_mode_property() function as fix.

This is missing explanation on why PIXEL_NONE is the correct value.

VOP2 seems to support all 3 blend modes? So a sentece explaining
the pixel_none value would be helpful.


Heiko

> Signed-off-by: Johan Jonker <[email protected]>
> ---
> 
> https://lore.kernel.org/all/[email protected]/
> ---
>  drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c 
> b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> index 0090d8ff0c79..0bc5b606f021 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> @@ -1850,6 +1850,8 @@ static void vop_plane_add_properties(struct drm_plane 
> *plane,
>       if (flags)
>               drm_plane_create_rotation_property(plane, DRM_MODE_ROTATE_0,
>                                                  DRM_MODE_ROTATE_0 | flags);
> +     drm_plane_create_blend_mode_property(plane,
> +                                          BIT(DRM_MODE_BLEND_PIXEL_NONE));
>  }
>  
>  static int vop_create_crtc(struct vop *vop)
> 




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