dceclksrc         657 drivers/gpu/drm/amd/display/dc/bios/command_table2.c 	params.param.dceclksrc  = atom_pll_id;
dceclksrc        2725 drivers/gpu/drm/amd/include/atomfirmware.h   uint8_t  dceclksrc;                                  // ATOM_PLL0 or ATOM_GCK_DFS or ATOM_FCH_CLK or ATOM_COMBOPHY_PLLx