Hi, On Fri, Sep 04, 2026 at 03:54:57PM +0800, Liu Ying wrote: > @@ -273,7 +285,22 @@ dc_crtc_atomic_enable(struct drm_crtc *crtc, struct > drm_atomic_commit *state) > dc_ed_pec_sync_trigger(dc_crtc->ed_cont); > dc_ed_pec_sync_trigger(dc_crtc->ed_safe); > dc_fg_shdtokgen(dc_crtc->fg); > + > + /* Don't relinquish CPU until TCON is set to operation mode. */ > + local_irq_save(flags); > + preempt_disable(); > + > dc_fg_enable(dc_crtc->fg); > + /* > + * Turn TCON into operation mode as soon as the first dumb > + * frame is generated by DC(we don't relinquish CPU to ensure > + * this). This makes DPR/PRG be able to evade the frame. > + */ > + DC_CRTC_WAIT_FOR_FRAMEGEN_FRAME_INDEX_MOVING(dc_crtc->fg); > + dc_tc_set_operation_mode(dc_crtc->tc); > + > + local_irq_restore(flags); > + preempt_enable();
That's really not great... Can you expand on why you need this, and is there really no other way to do it? Maxime
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