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The content of every half of screen is sent out via one interface in dual-DSI case. The content for every interface is blended by a LM pair in quad-pipe case, thus a LM pair should not blend any content that cross the half of screen in this case. Clip plane into pipes per left and right half screen ROI if topology is quad pipe case. The clipped rectangle on every half of screen is futher handled by two pipes if its width exceeds a limit for a single pipe. For non-virtual-plane case, there is always one stage config to serve a LM or LM pair. So the clipping does not occur when interating stages in this case. The plane is mapped to 2 pipes only when width or clock rate exceeds hardware constrain within stage check. Signed-off-by: Jun Nie <jun.nie@linaro.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Jessica Zhang <jessica.zhang@oss.qualcomm.com> Patchwork: https://patchwork.freedesktop.org/patch/711324/ Link: https://lore.kernel.org/r/20260312-msm-next-quad-pipe-split-v19-3-4ffa2b06c996@linaro.org Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>