Am 29. Juli 2021 05:15:23 MESZ schrieb Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx>: >This patch is breaking the mt8183 internal display. I think it's >because ~routes[i].val; is removed? >Also what should the routes[i].mask be if it's not set in >mmsys_mt8183_routing_table? > >> writel_relaxed(reg, mmsys->regs + >routes[i].addr); >> } >> } ><snip> The mask should reset the needed bits,maybe it needs to be adjusted for your ddp components... Can you add some debugs inside loops in mtk_mmsys_ddp_connect and mtk_mmsys_ddp_disconnect (show read val,mask and final mask before write) to show differences before and after the patch? regards Frank