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why: dcn35 currently uses a hardcoded DSC display clock value which is incorrect for some asic types. Newer DCN versions retrieve dsc display clock from clk_mgr. The same can be done for dcn35. how: Refactor the DSC cap calculation using pre-existing logic. Handle ODM combine requirements in dc_dsc.c. Replace hardcoded display clock with actual value retrieved from clk_mgr. Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Reviewed-by: Charlene Liu <charlene.liu@amd.com> Reviewed-by: Wenjing Liu <wenjing.liu@amd.com> Signed-off-by: Mohit Bawa <Mohit.Bawa@amd.com> Signed-off-by: Fangzhi Zuo <jerry.zuo@amd.com> Tested-by: Dan Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>