In 2x2 mst case, each 2k monitor will use 2 lms, but dpu_8_4 only have 6 lms, so let 2k only use one lm to support such case. Signed-off-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx> Signed-off-by: Yongxing Mou <quic_yongmou@xxxxxxxxxxx> --- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c index 5172ab4dea995a154cd88d05c3842d7425fc34ce..e8846bf8edc5f9b2b3b7f093e4d5aad75de53da1 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -677,7 +677,8 @@ static struct msm_display_topology dpu_encoder_get_topology( else if (!dpu_kms->catalog->caps->has_3d_merge) topology.num_lm = 1; else - topology.num_lm = (mode->hdisplay > MAX_HDISPLAY_SPLIT) ? 2 : 1; + topology.num_lm = (mode->hdisplay > dpu_kms->catalog->caps->max_mixer_width) ? + 2 : 1; if (crtc_state->ctm) topology.num_dspp = topology.num_lm; --- base-commit: df5d6180169ae06a2eac57e33b077ad6f6252440 change-id: 20250211-dp_lm-8f8ef15f5955 Best regards, -- Yongxing Mou <quic_yongmou@xxxxxxxxxxx>
