Hi Nancy, On Mon, Jul 11, 2022 at 03:52:42PM +0800, Nancy.Lin wrote: [..] > static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = { > .clk_driver = "clk-mt2701-mm", > .routes = mmsys_default_routing_table, > @@ -86,6 +88,7 @@ static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = { > .routes = mmsys_default_routing_table, > .num_routes = ARRAY_SIZE(mmsys_default_routing_table), > .sw0_rst_offset = MT8183_MMSYS_SW0_RST_B, > + .num_resets = 32, > }; > > static const struct mtk_mmsys_match_data mt8173_mmsys_match_data = { > @@ -100,6 +103,7 @@ static const struct mtk_mmsys_driver_data mt8183_mmsys_driver_data = { > .routes = mmsys_mt8183_routing_table, > .num_routes = ARRAY_SIZE(mmsys_mt8183_routing_table), > .sw0_rst_offset = MT8183_MMSYS_SW0_RST_B, > + .num_resets = 32, > }; > > static const struct mtk_mmsys_match_data mt8183_mmsys_match_data = { > @@ -114,6 +118,7 @@ static const struct mtk_mmsys_driver_data mt8186_mmsys_driver_data = { > .routes = mmsys_mt8186_routing_table, > .num_routes = ARRAY_SIZE(mmsys_mt8186_routing_table), > .sw0_rst_offset = MT8186_MMSYS_SW0_RST_B, > + .num_resets = 32, > }; [..] > @@ -351,18 +362,6 @@ static int mtk_mmsys_probe(struct platform_device *pdev) > return ret; > } > > - spin_lock_init(&mmsys->lock); > - > - mmsys->rcdev.owner = THIS_MODULE; > - mmsys->rcdev.nr_resets = 32; The number of resets was previously always set to 32, and now you're instead setting it based on num_resets from each machine. The issue is, you're forgetting a bunch of them. mt8192 didn't get a num_reset, so this commit breaks the display on mt8192 based devices. But mt8192 isn't the only one, there are other platforms missing this property. Please set num_resets to 32 in every single one of them, otherwise there will be display regressions. Thanks, Nícolas