MDCLK_SOURCE_SEL_CD2XCLK
intel_de_rmw(display, CDCLK_CTL, MDCLK_SOURCE_SEL_MASK, MDCLK_SOURCE_SEL_CD2XCLK);
return MDCLK_SOURCE_SEL_CD2XCLK;
val |= MDCLK_SOURCE_SEL_CD2XCLK;