On Thu, Jan 01, 2026 at 10:34:38AM +0530, Mahadevan P wrote:
> On SC7280 targets, display modes with a width greater than the
> max_mixer_width (2400) are rejected during mode validation when
> merge3d is disabled. This limitation exists because, without a
> 3D merge block, two layer mixers cannot be combined(non-DSC interface),
> preventing large layers from being split across mixers. As a result,
> higher resolution modes cannot be supported.
>
> Enable merge3d support on SC7280 to allow combining streams from
> two layer mixers into a single non-DSC interface. This capability
> removes the width restriction and enables buffer sizes beyond the
> 2400-pixel limit.
>
> Fixes: 591e34a091d1 ("drm/msm/disp/dpu1: add support for display for SC7280
> target")
> Signed-off-by: Mahadevan P <[email protected]>
> ---
> Changes in v2:
> - Updated commit message for clarity (Dmitry).
> ---
> drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_7_2_sc7280.h | 14 ++++++++++++--
> 1 file changed, 12 insertions(+), 2 deletions(-)
>
Reviewed-by: Dmitry Baryshkov <[email protected]>
--
With best wishes
Dmitry
