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drm/amd/display: limit the v_startup workaround to ASICs older than DCN3.1
Since, calling dcn20_adjust_freesync_v_startup() on DCN3.1+ ASICs can cause the display to flicker and underflow to occur, we shouldn't call it for them. So, ensure that the DCN version is less than DCN_VERSION_3_1 before calling dcn20_adjust_freesync_v_startup(). Cc: stable@vger.kernel.org Reviewed-by: Fangzhi Zuo <jerry.zuo@amd.com> Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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@ -1099,7 +1099,8 @@ void dcn20_calculate_dlg_params(struct dc *dc,
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context->res_ctx.pipe_ctx[i].plane_res.bw.dppclk_khz =
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pipes[pipe_idx].clks_cfg.dppclk_mhz * 1000;
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context->res_ctx.pipe_ctx[i].pipe_dlg_param = pipes[pipe_idx].pipe.dest;
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if (context->res_ctx.pipe_ctx[i].stream->adaptive_sync_infopacket.valid)
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if (dc->ctx->dce_version < DCN_VERSION_3_1 &&
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context->res_ctx.pipe_ctx[i].stream->adaptive_sync_infopacket.valid)
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dcn20_adjust_freesync_v_startup(
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&context->res_ctx.pipe_ctx[i].stream->timing,
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&context->res_ctx.pipe_ctx[i].pipe_dlg_param.vstartup_start);
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