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On skylake, DPLL 1, 2 and 3 can be used for DP and HDMI. The shared dpll framework allows us to share those DPLLs among DDIs when possible. The most tricky part is to provide a DPLL state that can be easily compared. DPLL_CRTL1 is shared by all the DPLLs, 6 bits each. The per-dpll crtl1 field of the hw state is then normalized to be the same value if 2 DPLLs do indeed have identical values for those 6 bits. v2: Port the code to the shared DPLL infrastructure (Damien) v3: Rebase on top of Ander's clock computation staging work for atomic (Damien) Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com> (v2) Signed-off-by: Satheeshakrishna M <satheeshakrishna.m@intel.com> (v1) Signed-off-by: Damien Lespiau <damien.lespiau@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> |
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